SFTPClient Class

Properties Methods Events Config Settings Errors

The SFTPClient class provides client-side functionality for SFTP (Secure File Transfer Protocol).

Syntax

class secureblackbox.SFTPClient

Remarks

SFTP is a file transfer subsystem that runs on top of secure shell (SSH) connection. This means that SFTP uses the whole strength of security provided by the SSH protocol, at the same time providing strong file transfer capabilities.

Please do keep in mind that there exist two protocols that offer similar secure file transfer features. SFTP works on top of SSH and normally uses port 22. FTPS works on top of TLS (or SSL) and normally uses ports 21 and 990. The protocols are very different, so please make sure you are after the right component. This component works with SFTP. Use the FTPClient component to connect to FTPS servers.

Below are the typical steps that let you integrate SFTPClient to your project:

Set up your username and password. SSH uses mandatory client-side authentication, so in most cases you need to provide your username, your password, or, sometimes, your private key. Use key property to provide your key, if needed.
Be ready to handle server authentication, which is also mandatory in SSH. SSH operates a concept of a trusted keys file, where keys of known servers are stored. You can assign a path to your own trusted keys file to the trusted_keys_file property. When a client receives a server key, it reports it to your code via its on_known_key_received or on_unknown_key_received event, depending on whether the key was found in the trusted list. If you leave trusted_keys_file empty, SFTPClient will only be able to fire the on_unknown_key_received event, since there will be no known keys to report.
If needed, customize proxy parameters and ssh_settings.
Consider interacting more with SFTPClient by subscribing to on_auth_attempt, on_auth_failed, and on_auth_succeeded events to be notified about the client authentication progress.
When you are ready to connect, call connect, passing the details of the server as parameters. During the initial handshake, the following events will fire: on_unknown_key_received (or on_known_key_received), and then one or more on_auth_attempt, on_auth_failed and on_auth_succeeded.
Upon completion of the connect method, the component is ready for file operations. Use download_file, upload_file, list_dir, delete_file and other file transfer methods to work with the server file system.
When you are done with your work, call disconnect to close the connection.

Some SFTP servers, primarily older ones, may expose various transfer issues. If you come across a weird issue that you believe should not be happening (such as repeated connection closures in the middle of the transfer), please try adjusting the following properties:

auto_adjust_transfer_block to false,
pipeline_length to 1,
upload_block_size to 16384,
download_block_size to 16384.

These adjustments will put SFTPClient in very conservative transfer setup. While this setup may be quite sluggish with modern servers, it should make SFTPClient interoperable with most older servers.

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.


auth_attempts	Specifies the number of SSH authentication attempts.
auto_adjust_transfer_block	Specifies whether to adjust the send and receive buffer sizes automatically.
connected	Indicates if the client is connected to the SFTP server.
conn_info_client_key_algorithm	Specifies the client's key algorithm.
conn_info_client_key_bits	Specifies the length of the client's key.
conn_info_client_key_fingerprint	The fingerprint (hash value) of the client's public key.
conn_info_close_reason	Contains the line sent by the server just before closing the connection.
conn_info_compression_algorithm_inbound	Compression algorithm for the incoming traffic.
conn_info_compression_algorithm_outbound	Compression algorithm for the outgoing traffic.
conn_info_encryption_algorithm_inbound	Encryption algorithm for the incoming traffic.
conn_info_encryption_algorithm_outbound	Encryption algorithm for the outgoing traffic.
conn_info_inbound_encryption_key_bits	Specifies the length of the key used to encrypt the incoming traffic.
conn_info_kex_algorithm	The key exchange algorithm used during the SSH handshake.
conn_info_kex_bits	The number of bits used by the key exchange algorithm.
conn_info_kex_lines	The contents of the received KexInit packet.
conn_info_mac_algorithm_inbound	MAC algorithm used for the incoming connection.
conn_info_mac_algorithm_outbound	MAC algorithm used for outbound connection.
conn_info_outbound_encryption_key_bits	Specifies the length of the key used to encrypt the outgoing traffic.
conn_info_public_key_algorithm	Specifies the public key algorithm which was used during the SSH handshake.
conn_info_server_key_bits	Specifies the number of bits in the server's key.
conn_info_server_key_fingerprint	The fingerprint (hash value) of the server's public key.
conn_info_server_software_name	Returns the name of the SSH software running on the server side.
conn_info_total_bytes_received	Returns the total number of bytes received over this connection.
conn_info_total_bytes_sent	Returns the total number of bytes sent over this connection.
conn_info_version	Specifies SSH protocol version.
curr_list_entry_a_time	Contains the last access time for this file, in UTC.
curr_list_entry_c_time	Contains this file's creation time, in UTC.
curr_list_entry_directory	Specifies whether this entry is a directory.
curr_list_entry_file_type	Specifies the type of this entry, one of the following: cftFile 0 cftDirectory 1 cftSymblink 2 cftSpecial 3 cftUnknown 4 cftSocket 5 cftCharDevice 6 cftBlockDevice 7 cftFIFO 8 .
curr_list_entry_group_execute	Controls file execution permission for the group users.
curr_list_entry_group_read	Controls file read permission for the group users.
curr_list_entry_group_write	Controls file write permission for the group users.
curr_list_entry_handle	Allows to get or set a 'handle', a unique identifier of the underlying property object.
curr_list_entry_long_name	Contains the long name of the file (human-readable, ftp-like).
curr_list_entry_m_time	Specifies the last modification time, in UTC.
curr_list_entry_name	Specifies the file name.
curr_list_entry_other_execute	Controls file execution permission for other users (users that are neither owners, nor belong to the same group).
curr_list_entry_other_read	Controls file read permission for other users (users that are neither owners, nor belong to the same group).
curr_list_entry_other_write	Controls file write permission for other users (users that are neither owners, nor belong to the same group).
curr_list_entry_owner	Specifies the owner of the file/directory.
curr_list_entry_path	Contains the full path to the file.
curr_list_entry_size	The size of the file in bytes.
curr_list_entry_user_execute	Controls file execution permission for the file owner.
curr_list_entry_user_read	Controls file read permission for the file owner.
curr_list_entry_user_write	Controls file write permission for the file owner.
download_block_size	The download block size in bytes.
external_crypto_async_document_id	Specifies an optional document ID for SignAsyncBegin() and SignAsyncEnd() calls.
external_crypto_custom_params	Custom parameters to be passed to the signing service (uninterpreted).
external_crypto_data	Additional data to be included in the async state and mirrored back by the requestor.
external_crypto_external_hash_calculation	Specifies whether the message hash is to be calculated at the external endpoint.
external_crypto_hash_algorithm	Specifies the request's signature hash algorithm.
external_crypto_key_id	The ID of the pre-shared key used for DC request authentication.
external_crypto_key_secret	The pre-shared key used for DC request authentication.
external_crypto_method	Specifies the asynchronous signing method.
external_crypto_mode	Specifies the external cryptography mode.
external_crypto_public_key_algorithm	Provide the public key algorithm here if the certificate is not available on the pre-signing stage.
fips_mode	Reserved.
force_compression	Enforces compression for the SSH layer.
key_fingerprint_sha1	Contains the SHA-1 fingerprint (hash) of the key.
key_fingerprint_sha256	Contains the SHA-256 fingerprint (hash) of the key.
key_handle	Allows to get or set a 'handle', a unique identifier of the underlying property object.
max_sftp_version	Higher SFTP version to support.
min_sftp_version	Lower SFTP version to support.
password	Specifies user's authentication password.
pipeline_length	The number of parallelized transfer requests.
proxy_address	The IP address of the proxy server.
proxy_authentication	The authentication type used by the proxy server.
proxy_password	The password to authenticate to the proxy server.
proxy_port	The port on the proxy server to connect to.
proxy_proxy_type	The type of the proxy server.
proxy_request_headers	Contains HTTP request headers for WebTunnel and HTTP proxy.
proxy_response_body	Contains the HTTP or HTTPS (WebTunnel) proxy response body.
proxy_response_headers	Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.
proxy_use_ipv6	Specifies whether IPv6 should be used when connecting through the proxy.
proxy_use_proxy	Enables or disables proxy-driven connection.
proxy_username	Specifies the username credential for proxy authentication.
server_key_algorithm	Specifies the key algorithm.
server_key_bits	The number of bits in the key: the more the better, 2048 or 4096 are typical values.
server_key_comment	The comment for the public key.
server_key_curve	Specifies the elliptical curve when EC cryptography is used.
server_key_dssg	The G (Generator) parameter of the DSS signature key.
server_key_dssp	The P (Prime) parameter of the DSS signature key.
server_key_dssq	The Q (Prime Factor) parameter of the DSS signature key.
server_key_dssx	The X (Private key) parameter of the DSS signature key.
server_key_dssy	The Y (Public key) parameter of the DSS signature key.
server_key_eccd	The value of the secret key (the order of the public key, D) if elliptic curve (EC) cryptography is used.
server_key_eccqx	The value of the X coordinate of the public key if elliptic curve (EC) cryptography is used.
server_key_eccqy	The value of the Y coordinate of the public key if elliptic curve (EC) cryptography is used.
server_key_ed_private	The value of the private key if EdDSA (Edwards-curve Digital Signature Algorithm) algorithm is used.
server_key_ed_public	The value of the public key if EdDSA (Edwards-curve Digital Signature Algorithm) algorithm is used.
server_key_fingerprint_md5	Contains the MD5 fingerprint (hash) of the key.
server_key_fingerprint_sha1	Contains the SHA-1 fingerprint (hash) of the key.
server_key_fingerprint_sha256	Contains the SHA-256 fingerprint (hash) of the key.
server_key_handle	Allows to get or set a 'handle', a unique identifier of the underlying property object.
server_key_is_extractable	Whether the key is extractable (e.
server_key_is_private	Whether this key is a private key or not.
server_key_is_public	Whether this key is a public key or not.
server_key_kdf_rounds	Returns the number of iterations of the Key Derivation Function (KDF) used to generate this key.
server_key_kdf_salt	The salt value used by the Key Derivation Function (KDF) to generate this key.
server_key_key_format	Specifies the format in which the key is stored.
server_key_key_protection_algorithm	Specifies the key protection algorithm.
server_key_rsa_exponent	Returns the e parameter (public exponent) of the RSA key.
server_key_rsaiqmp	Returns the iqmp parameter of the RSA key.
server_key_rsa_modulus	Returns the m parameter (public modulus) of the RSA key.
server_key_rsap	Returns the p parameter (first factor of the common modulus n) of the RSA key.
server_key_rsa_private_exponent	Returns the d parameter (private exponent) of the RSA key.
server_key_rsaq	Returns the q parameter (second factor of the common modulus n) of the RSA key.
server_key_subject	Specifies the public key owner (subject).
socket_dns_mode	Selects the DNS resolver to use: the class's (secure) built-in one, or the one provided by the system.
socket_dns_port	Specifies the port number to be used for sending queries to the DNS server.
socket_dns_query_timeout	The timeout (in milliseconds) for each DNS query.
socket_dns_servers	The addresses of DNS servers to use for address resolution, separated by commas or semicolons.
socket_dns_total_timeout	The timeout (in milliseconds) for the whole resolution process.
socket_incoming_speed_limit	The maximum number of bytes to read from the socket, per second.
socket_local_address	The local network interface to bind the socket to.
socket_local_port	The local port number to bind the socket to.
socket_outgoing_speed_limit	The maximum number of bytes to write to the socket, per second.
socket_timeout	The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.
socket_use_ipv6	Enables or disables IP protocol version 6.
ssh_settings_auto_adjust_ciphers	Whether the SSH client should adjust its list of supported ciphers 'on-the-fly' for greater compatibility with the server it is connecting to.
ssh_settings_base_configuration	Allows to choose base configuration of SSH settings, tuned up for different purposes such as high security or higher compatibility.
ssh_settings_compression_algorithms	A list of session compression algorithms separated with commas or semicolons.
ssh_settings_compression_level	Possible values for the Compression Level range from 0 (minimum compression) to 9 (maximum compression).
ssh_settings_default_window_size	The SSH window size specifies how many bytes the client can send to the server in the command channel without obtaining pre-authorization for the further send from the server.
ssh_settings_encryption_algorithms	A list of session encryption algorithms separated with commas or semicolons.
ssh_settings_force_compression	Whether the SSH client should explicitly request compression.
ssh_settings_gss_auth_types	A comma-separated list of authentication types.
ssh_settings_gss_delegate_creds	Switches credential delegation on or off.
ssh_settings_gss_hostname	The GSS host name, in form of a FQDN (e.
ssh_settings_gss_lib	A path to the GSS-API library (DLL or SO).
ssh_settings_gss_mechanisms	A comma-separated list of GSS mechanisms to use.
ssh_settings_gss_protocols	A comma-separated list of SSPI protocols.
ssh_settings_handshake_timeout	Specifies the maximal time for the SSH handshake to proceed, in seconds.
ssh_settings_kex_algorithms	A list of key exchange algorithms separated with commas or semicolons.
ssh_settings_mac_algorithms	A list of MAC (for message authentication code ) algorithms separated with commas or semicolons.
ssh_settings_max_ssh_packet_size	Specifies the maximum length of one SSH packet in bytes.
ssh_settings_min_window_size	Specifies the minimal internal window size.
ssh_settings_obfuscate_handshake	Enables or disables handshake obfuscation.
ssh_settings_obfuscation_password	Specifies the password used to encrypt the handshake when ObfuscateHandshake is set.
ssh_settings_public_key_algorithms	A list of public key algorithms separated with commas or semicolons.
ssh_settings_request_password_change	Whether to request a password change when connecting.
ssh_settings_software_name	The name to be used by the class to identify itself.
ssh_settings_trust_all_keys	Enables or disables explicit trust to all server keys.
ssh_settings_use_auth_agent	Enables or disables the use of external key agent, such as Putty key agent.
ssh_settings_versions	Specifies enabled SSH protocol versions (1 or 2).
trusted_keys_file	A file containing the keys of authorized servers.
upload_block_size	The upload block size in bytes.
username	The client's username to authenticate to the server.
use_utf8	Enables UTF8 for all string content.
version	The SFTP version negotiated.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.


absolute_path	Requests the absolute path for a relative path.
change_dir	Changes current working directory on the server.
config	Sets or retrieves a configuration setting.
connect	Connects to an SFTP server.
create_link	Creates a symbolic or hard link to a remote file.
delete_dir	Removes directory from the SFTP server.
delete_file	Deletes a file from the SFTP server.
delete_files	Deletes a group of files from the SFTP server.
dir_exists	Checks if a directory exists on the SFTP server.
disconnect	Disconnects from the SFTP server.
do_action	Performs an additional action.
download_bytes	Downloads a file from the server into an array of bytes.
download_file	Downloads a file from the SFTP server.
download_files	Downloads multiple files from the SFTP server.
execute_ssh_command	Sends an SSH command to the server in the middle of SFTP session.
extension_cmd	Sends an extension command to the server.
file_exists	Checks whether a file exists on the server.
get_current_dir	Returns the current directory on the SFTP server.
get_file_size	Checks the size of a remote file.
list_dir	Lists the content of the current remote directory.
make_dir	Creates a new directory on the server.
rename_file	Renames a file.
request_attributes	Requests attributes of the remote file.
set_attributes	Sets the attributes upon a remote file.
upload_bytes	Uploads a byte array to the server.
upload_file	Uploads a file to the server.
upload_files	Uploads multiple files to the server.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.


on_auth_attempt	Fires when an authentication attempt is performed.
on_auth_failed	Fires if an authentication attempt fails.
on_auth_succeeded	Reports a successful authentication.
on_banner	Reports the receipt of the Welcome message from the server.
on_disconnect	Reports SFTP connection closure.
on_error	Information about errors during SFTP connection.
on_external_sign	Handles remote or external signing initiated by the SignExternal method or other source.
on_file_operation	Signifies the start of a file transfer operation.
on_file_operation_result	Signifies the completion of a file transfer operation.
on_known_key_received	Signals that the server has introduced itself with a known key.
on_list_entry	Reports a directory listing entry to the application.
on_notification	This event notifies the application about an underlying control flow event.
on_password_change_request	Signals that the server requests a password change.
on_private_key_needed	Asks the application for the client's private key.
on_progress	Fires periodically during the data transfer.
on_unknown_key_received	Signals that the server has introduced itself with an unknown key.

Config Settings

The following is a list of config settings for the class with short descriptions. Click on the links for further details.


AdjustFileTimes	Whether file times should be adjusted after upload/download.
ASCIIMode	Whether ASCII transfer mode is used.
AvailableSpace	Returns details of server disk space availability. This protocol extension must be supported by the server for this request to work.
CaseConversion	Whether case conversion must be applied to file names as they are downloaded.
CaseSensitive	Specifies if file paths are case-sensitive.
CopyMode	Defines what to do with each successfully copied file.
DefOutboundBlockSize	The default outbound block size.
DisablePacketFragmentation	Enables or disables SSH packet fragmentation.
ErrorOrigin	Specifies whether the error is local or remote.
ErrorSeverity	Specifies whether the error is fatal.
FileHash	Returns the hash of the specified file. This protocol extension must be supported by the server for this request to work.
HashAlgorithm	The hash algorithm to use for the protocol operations.
HomeDir	Returns a user's home directory. This protocol extension must be supported by the server for this request to work.
IncomingSpeedLimit	Specifies incoming speed limit.
KeepAlivePeriod	The inactivity period after which a keep-alive signal will be sent.
LocalCharset	Charset used on the client machine.
LocalNewLineConvention	A character string for the end of line (EOL) indication on the local machine.
Mode	The file open mode to use.
NewLineConvention	A character string for the end of line (EOL) indication on the server.
OutgoingSpeedLimit	Specifies incoming speed limit.
PreserveExistingFileTimes	Whether original file times should be restored upon transfer.
Recursive	Whether subdirectories should also be scanned for matching files.
RedirectStdErr	Whether to redirect output to StdErr.
RemoteCharset	Charset used on the server.
SFTPBufferSize	The size of internal buffer used for data transfer.
SFTPServerExecutableLocations	Location of the SFTP server executable.
StatVFS	Returns VFS details. This protocol extension must be supported by the server for this request to work.
StdErrData	The buffer for writing StdErr data.
TempFolder	Returns the temporary directory offered by the server. This protocol extension must be supported by the server for this request to work.
TempPath	Location where the temporary files are stored.
TreatZeroSizeAsUndefined	Whether zero size returned by STAT should be considered as undefined.
UseStrictKeyExchange	Specifies how strict key exchange is supported.
UseTruncateFlagOnUpload	whether to use the 'truncate' flag on file upload.
UseUTF8OnV3	Whether to apply UTF-8 conversion for SFTP protocol versions 3 and lower.
CheckKeyIntegrityBeforeUse	Enables or disable private key integrity check before use.
CookieCaching	Specifies whether a cookie cache should be used for HTTP(S) transports.
Cookies	Gets or sets local cookies for the class.
DefDeriveKeyIterations	Specifies the default key derivation algorithm iteration count.
EnableClientSideSSLFFDHE	Enables or disables finite field DHE key exchange support in TLS clients.
GlobalCookies	Gets or sets global cookies for all the HTTP transports.
HttpUserAgent	Specifies the user agent name to be used by all HTTP clients.
LogDestination	Specifies the debug log destination.
LogDetails	Specifies the debug log details to dump.
LogFile	Specifies the debug log filename.
LogFilters	Specifies the debug log filters.
LogFlushMode	Specifies the log flush mode.
LogLevel	Specifies the debug log level.
LogMaxEventCount	Specifies the maximum number of events to cache before further action is taken.
LogRotationMode	Specifies the log rotation mode.
MaxASN1BufferLength	Specifies the maximal allowed length for ASN.1 primitive tag data.
MaxASN1TreeDepth	Specifies the maximal depth for processed ASN.1 trees.
OCSPHashAlgorithm	Specifies the hash algorithm to be used to identify certificates in OCSP requests.
StaticDNS	Specifies whether static DNS rules should be used.
StaticIPAddress[domain]	Gets or sets an IP address for the specified domain name.
StaticIPAddresses	Gets or sets all the static DNS rules.
Tag	Allows to store any custom data.
TLSSessionGroup	Specifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetime	Specifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeInterval	Specifies how often the session cache should remove the expired TLS sessions.
UseOwnDNSResolver	Specifies whether the client classes should use own DNS resolver.
UseSharedSystemStorages	Specifies whether the validation engine should use a global per-process copy of the system certificate stores.
UseSystemOAEPAndPSS	Enforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandom	Enables or disables the use of the OS PRNG.

auth_attempts Property

Specifies the number of SSH authentication attempts.

Syntax

def get_auth_attempts() -> int: ...
def set_auth_attempts(value: int) -> None: ...

auth_attempts = property(get_auth_attempts, set_auth_attempts)

Default Value

Remarks

Use this property to specify the number of authentication attempts to try. The on_auth_failed event is fired for every failed attempt.

auto_adjust_transfer_block Property

Specifies whether to adjust the send and receive buffer sizes automatically.

Syntax

def get_auto_adjust_transfer_block() -> bool: ...
def set_auto_adjust_transfer_block(value: bool) -> None: ...

auto_adjust_transfer_block = property(get_auto_adjust_transfer_block, set_auto_adjust_transfer_block)

Default Value

TRUE

Remarks

Automatic transfer block size adjustment may be beneficial for maximizing interoperability and achieving the best transfer speeds.

Use download_block_size, upload_block_size, and pipeline_length properties to adjust the transfer settings manually.

connected Property

Indicates if the client is connected to the SFTP server.

Syntax

def get_connected() -> bool: ...

connected = property(get_connected, None)

Default Value

FALSE

Remarks

Use this read-only property to check whether the client is connected to the server.

This property is read-only.

conn_info_client_key_algorithm Property

Specifies the client's key algorithm.

Syntax

def get_conn_info_client_key_algorithm() -> str: ...

conn_info_client_key_algorithm = property(get_conn_info_client_key_algorithm, None)

Default Value

Remarks

Specifies the client's key algorithm.

This property is read-only.

conn_info_client_key_bits Property

Specifies the length of the client's key.

Syntax

def get_conn_info_client_key_bits() -> int: ...

conn_info_client_key_bits = property(get_conn_info_client_key_bits, None)

Default Value

Remarks

Specifies the length of the client's key.

This property is read-only.

conn_info_client_key_fingerprint Property

The fingerprint (hash value) of the client's public key.

Syntax

def get_conn_info_client_key_fingerprint() -> str: ...

conn_info_client_key_fingerprint = property(get_conn_info_client_key_fingerprint, None)

Default Value

Remarks

The fingerprint (hash value) of the client's public key.

This property is read-only.

conn_info_close_reason Property

Contains the line sent by the server just before closing the connection.

Syntax

def get_conn_info_close_reason() -> str: ...

conn_info_close_reason = property(get_conn_info_close_reason, None)

Default Value

Remarks

Contains the line sent by the server just before closing the connection. It might contain the error description if the connection was not closed gracefully.

This property is read-only.

conn_info_compression_algorithm_inbound Property

Compression algorithm for the incoming traffic.

Syntax

def get_conn_info_compression_algorithm_inbound() -> str: ...

conn_info_compression_algorithm_inbound = property(get_conn_info_compression_algorithm_inbound, None)

Default Value

Remarks

Compression algorithm for the incoming traffic.

This property is read-only.

conn_info_compression_algorithm_outbound Property

Compression algorithm for the outgoing traffic.

Syntax

def get_conn_info_compression_algorithm_outbound() -> str: ...

conn_info_compression_algorithm_outbound = property(get_conn_info_compression_algorithm_outbound, None)

Default Value

Remarks

Compression algorithm for the outgoing traffic.

This property is read-only.

conn_info_encryption_algorithm_inbound Property

Encryption algorithm for the incoming traffic.

Syntax

def get_conn_info_encryption_algorithm_inbound() -> str: ...

conn_info_encryption_algorithm_inbound = property(get_conn_info_encryption_algorithm_inbound, None)

Default Value

Remarks

Encryption algorithm for the incoming traffic.

This property is read-only.

conn_info_encryption_algorithm_outbound Property

Encryption algorithm for the outgoing traffic.

Syntax

def get_conn_info_encryption_algorithm_outbound() -> str: ...

conn_info_encryption_algorithm_outbound = property(get_conn_info_encryption_algorithm_outbound, None)

Default Value

Remarks

Encryption algorithm for the outgoing traffic.

This property is read-only.

conn_info_inbound_encryption_key_bits Property

Specifies the length of the key used to encrypt the incoming traffic.

Syntax

def get_conn_info_inbound_encryption_key_bits() -> int: ...

conn_info_inbound_encryption_key_bits = property(get_conn_info_inbound_encryption_key_bits, None)

Default Value

Remarks

Specifies the length of the key used to encrypt the incoming traffic.

This property is read-only.

conn_info_kex_algorithm Property

The key exchange algorithm used during the SSH handshake.

Syntax

def get_conn_info_kex_algorithm() -> str: ...

conn_info_kex_algorithm = property(get_conn_info_kex_algorithm, None)

Default Value

Remarks

The key exchange algorithm used during the SSH handshake.

This property is read-only.

conn_info_kex_bits Property

The number of bits used by the key exchange algorithm.

Syntax

def get_conn_info_kex_bits() -> int: ...

conn_info_kex_bits = property(get_conn_info_kex_bits, None)

Default Value

Remarks

The number of bits used by the key exchange algorithm.

This property is read-only.

conn_info_kex_lines Property

The contents of the received KexInit packet.

Syntax

def get_conn_info_kex_lines() -> str: ...

conn_info_kex_lines = property(get_conn_info_kex_lines, None)

Default Value

Remarks

The contents of the received KexInit packet.

KexInit packet contains the list of algorithms supported by the remote party.

This property is read-only.

conn_info_mac_algorithm_inbound Property

MAC algorithm used for the incoming connection.

Syntax

def get_conn_info_mac_algorithm_inbound() -> str: ...

conn_info_mac_algorithm_inbound = property(get_conn_info_mac_algorithm_inbound, None)

Default Value

Remarks

MAC algorithm used for the incoming connection.

This property is read-only.

conn_info_mac_algorithm_outbound Property

MAC algorithm used for outbound connection.

Syntax

def get_conn_info_mac_algorithm_outbound() -> str: ...

conn_info_mac_algorithm_outbound = property(get_conn_info_mac_algorithm_outbound, None)

Default Value

Remarks

MAC algorithm used for outbound connection.

This property is read-only.

conn_info_outbound_encryption_key_bits Property

Specifies the length of the key used to encrypt the outgoing traffic.

Syntax

def get_conn_info_outbound_encryption_key_bits() -> int: ...

conn_info_outbound_encryption_key_bits = property(get_conn_info_outbound_encryption_key_bits, None)

Default Value

Remarks

Specifies the length of the key used to encrypt the outgoing traffic.

This property is read-only.

conn_info_public_key_algorithm Property

Specifies the public key algorithm which was used during the SSH handshake.

Syntax

def get_conn_info_public_key_algorithm() -> str: ...

conn_info_public_key_algorithm = property(get_conn_info_public_key_algorithm, None)

Default Value

Remarks

Specifies the public key algorithm which was used during the SSH handshake.

This property is read-only.

conn_info_server_key_bits Property

Specifies the number of bits in the server's key.

Syntax

def get_conn_info_server_key_bits() -> int: ...

conn_info_server_key_bits = property(get_conn_info_server_key_bits, None)

Default Value

Remarks

Specifies the number of bits in the server's key.

This property is read-only.

conn_info_server_key_fingerprint Property

The fingerprint (hash value) of the server's public key.

Syntax

def get_conn_info_server_key_fingerprint() -> str: ...

conn_info_server_key_fingerprint = property(get_conn_info_server_key_fingerprint, None)

Default Value

Remarks

The fingerprint (hash value) of the server's public key.

This property is read-only.

conn_info_server_software_name Property

Returns the name of the SSH software running on the server side.

Syntax

def get_conn_info_server_software_name() -> str: ...

conn_info_server_software_name = property(get_conn_info_server_software_name, None)

Default Value

Remarks

Returns the name of the SSH software running on the server side.

This property is read-only.

conn_info_total_bytes_received Property

Returns the total number of bytes received over this connection.

Syntax

def get_conn_info_total_bytes_received() -> int: ...

conn_info_total_bytes_received = property(get_conn_info_total_bytes_received, None)

Default Value

Remarks

Returns the total number of bytes received over this connection.

This property is read-only.

conn_info_total_bytes_sent Property

Returns the total number of bytes sent over this connection.

Syntax

def get_conn_info_total_bytes_sent() -> int: ...

conn_info_total_bytes_sent = property(get_conn_info_total_bytes_sent, None)

Default Value

Remarks

Returns the total number of bytes sent over this connection.

This property is read-only.

conn_info_version Property

Specifies SSH protocol version.

Syntax

def get_conn_info_version() -> int: ...

conn_info_version = property(get_conn_info_version, None)

Default Value

Remarks

Specifies SSH protocol version.

This property is read-only.

curr_list_entry_a_time Property

Contains the last access time for this file, in UTC.

Syntax

def get_curr_list_entry_a_time() -> str: ...

curr_list_entry_a_time = property(get_curr_list_entry_a_time, None)

Default Value

Remarks

Contains the last access time for this file, in UTC.

This property is read-only.

curr_list_entry_c_time Property

Contains this file's creation time, in UTC.

Syntax

def get_curr_list_entry_c_time() -> str: ...

curr_list_entry_c_time = property(get_curr_list_entry_c_time, None)

Default Value

Remarks

Contains this file's creation time, in UTC.

This property is read-only.

curr_list_entry_directory Property

Specifies whether this entry is a directory.

Syntax

def get_curr_list_entry_directory() -> bool: ...

curr_list_entry_directory = property(get_curr_list_entry_directory, None)

Default Value

FALSE

Remarks

Specifies whether this entry is a directory.

This property is read-only.

curr_list_entry_file_type Property

Specifies the type of this entry, one of the following: cftFile 0 cftDirectory 1 cftSymblink 2 cftSpecial 3 cftUnknown 4 cftSocket 5 cftCharDevice 6 cftBlockDevice 7 cftFIFO 8 .

Syntax

def get_curr_list_entry_file_type() -> int: ...

curr_list_entry_file_type = property(get_curr_list_entry_file_type, None)

Default Value

Remarks

Specifies the type of this entry, one of the following:


cftFile	`0`
cftDirectory	`1`
cftSymblink	`2`
cftSpecial	`3`
cftUnknown	`4`
cftSocket	`5`
cftCharDevice	`6`
cftBlockDevice	`7`
cftFIFO	`8`

This property is read-only.

curr_list_entry_group_execute Property

Controls file execution permission for the group users.

Syntax

def get_curr_list_entry_group_execute() -> bool: ...

curr_list_entry_group_execute = property(get_curr_list_entry_group_execute, None)

Default Value

FALSE

Remarks

Controls file execution permission for the group users.

This property is read-only.

curr_list_entry_group_read Property

Controls file read permission for the group users.

Syntax

def get_curr_list_entry_group_read() -> bool: ...

curr_list_entry_group_read = property(get_curr_list_entry_group_read, None)

Default Value

FALSE

Remarks

Controls file read permission for the group users.

This property is read-only.

curr_list_entry_group_write Property

Controls file write permission for the group users.

Syntax

def get_curr_list_entry_group_write() -> bool: ...

curr_list_entry_group_write = property(get_curr_list_entry_group_write, None)

Default Value

FALSE

Remarks

Controls file write permission for the group users.

This property is read-only.

curr_list_entry_handle Property

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

def get_curr_list_entry_handle() -> int: ...

curr_list_entry_handle = property(get_curr_list_entry_handle, None)

Default Value

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

This property is read-only.

curr_list_entry_long_name Property

Contains the long name of the file (human-readable, ftp-like).

Syntax

def get_curr_list_entry_long_name() -> str: ...

curr_list_entry_long_name = property(get_curr_list_entry_long_name, None)

Default Value

Remarks

Contains the long name of the file (human-readable, ftp-like).

This property is read-only.

curr_list_entry_m_time Property

Specifies the last modification time, in UTC.

Syntax

def get_curr_list_entry_m_time() -> str: ...

curr_list_entry_m_time = property(get_curr_list_entry_m_time, None)

Default Value

Remarks

Specifies the last modification time, in UTC.

This property is read-only.

curr_list_entry_name Property

Specifies the file name.

Syntax

def get_curr_list_entry_name() -> str: ...

curr_list_entry_name = property(get_curr_list_entry_name, None)

Default Value

Remarks

Specifies the file name.

This property is read-only.

curr_list_entry_other_execute Property

Controls file execution permission for other users (users that are neither owners, nor belong to the same group).

Syntax

def get_curr_list_entry_other_execute() -> bool: ...

curr_list_entry_other_execute = property(get_curr_list_entry_other_execute, None)

Default Value

FALSE

Remarks

Controls file execution permission for other users (users that are neither owners, nor belong to the same group).

This property is read-only.

curr_list_entry_other_read Property

Controls file read permission for other users (users that are neither owners, nor belong to the same group).

Syntax

def get_curr_list_entry_other_read() -> bool: ...

curr_list_entry_other_read = property(get_curr_list_entry_other_read, None)

Default Value

FALSE

Remarks

Controls file read permission for other users (users that are neither owners, nor belong to the same group).

This property is read-only.

curr_list_entry_other_write Property

Controls file write permission for other users (users that are neither owners, nor belong to the same group).

Syntax

def get_curr_list_entry_other_write() -> bool: ...

curr_list_entry_other_write = property(get_curr_list_entry_other_write, None)

Default Value

FALSE

Remarks

Controls file write permission for other users (users that are neither owners, nor belong to the same group).

This property is read-only.

curr_list_entry_owner Property

Specifies the owner of the file/directory.

Syntax

def get_curr_list_entry_owner() -> str: ...

curr_list_entry_owner = property(get_curr_list_entry_owner, None)

Default Value

Remarks

Specifies the owner of the file/directory.

This property is read-only.

curr_list_entry_path Property

Contains the full path to the file.

Syntax

def get_curr_list_entry_path() -> str: ...

curr_list_entry_path = property(get_curr_list_entry_path, None)

Default Value

Remarks

Contains the full path to the file.

This property is read-only.

curr_list_entry_size Property

The size of the file in bytes.

Syntax

def get_curr_list_entry_size() -> int: ...

curr_list_entry_size = property(get_curr_list_entry_size, None)

Default Value

Remarks

The size of the file in bytes.

This property is read-only.

curr_list_entry_user_execute Property

Controls file execution permission for the file owner.

Syntax

def get_curr_list_entry_user_execute() -> bool: ...

curr_list_entry_user_execute = property(get_curr_list_entry_user_execute, None)

Default Value

FALSE

Remarks

Controls file execution permission for the file owner.

This property is read-only.

curr_list_entry_user_read Property

Controls file read permission for the file owner.

Syntax

def get_curr_list_entry_user_read() -> bool: ...

curr_list_entry_user_read = property(get_curr_list_entry_user_read, None)

Default Value

FALSE

Remarks

Controls file read permission for the file owner.

This property is read-only.

curr_list_entry_user_write Property

Controls file write permission for the file owner.

Syntax

def get_curr_list_entry_user_write() -> bool: ...

curr_list_entry_user_write = property(get_curr_list_entry_user_write, None)

Default Value

FALSE

Remarks

Controls file write permission for the file owner.

This property is read-only.

download_block_size Property

The download block size in bytes.

Syntax

def get_download_block_size() -> int: ...
def set_download_block_size(value: int) -> None: ...

download_block_size = property(get_download_block_size, set_download_block_size)

Default Value

65536

Remarks

Use this property to manually control the size of download blocks. Typically you will only need to adjust this property if the default transfer settings (auto_adjust_transfer_block) don't work.

external_crypto_async_document_id Property

Specifies an optional document ID for SignAsyncBegin() and SignAsyncEnd() calls.

Syntax

def get_external_crypto_async_document_id() -> str: ...
def set_external_crypto_async_document_id(value: str) -> None: ...

external_crypto_async_document_id = property(get_external_crypto_async_document_id, set_external_crypto_async_document_id)

Default Value

Remarks

Specifies an optional document ID for SignAsyncBegin() and SignAsyncEnd() calls.

Use this property when working with multi-signature DCAuth requests and responses to uniquely identify documents signed within a larger batch. On the completion stage, this value helps the signing component identify the correct signature in the returned batch of responses.

If using batched requests, make sure to set this property to the same value on both the pre-signing (SignAsyncBegin) and completion (SignAsyncEnd) stages.

external_crypto_custom_params Property

Custom parameters to be passed to the signing service (uninterpreted).

Syntax

def get_external_crypto_custom_params() -> str: ...
def set_external_crypto_custom_params(value: str) -> None: ...

external_crypto_custom_params = property(get_external_crypto_custom_params, set_external_crypto_custom_params)

Default Value

Remarks

Custom parameters to be passed to the signing service (uninterpreted).

external_crypto_data Property

Additional data to be included in the async state and mirrored back by the requestor.

Syntax

def get_external_crypto_data() -> str: ...
def set_external_crypto_data(value: str) -> None: ...

external_crypto_data = property(get_external_crypto_data, set_external_crypto_data)

Default Value

Remarks

Additional data to be included in the async state and mirrored back by the requestor.

external_crypto_external_hash_calculation Property

Specifies whether the message hash is to be calculated at the external endpoint.

Syntax

def get_external_crypto_external_hash_calculation() -> bool: ...
def set_external_crypto_external_hash_calculation(value: bool) -> None: ...

external_crypto_external_hash_calculation = property(get_external_crypto_external_hash_calculation, set_external_crypto_external_hash_calculation)

Default Value

FALSE

Remarks

Specifies whether the message hash is to be calculated at the external endpoint. Please note that this mode is not supported by the DCAuth class.

If set to true, the class will pass a few kilobytes of to-be-signed data from the document to the OnExternalSign event. This only applies when SignExternal() is called.

external_crypto_hash_algorithm Property

Specifies the request's signature hash algorithm.

Syntax

def get_external_crypto_hash_algorithm() -> str: ...
def set_external_crypto_hash_algorithm(value: str) -> None: ...

external_crypto_hash_algorithm = property(get_external_crypto_hash_algorithm, set_external_crypto_hash_algorithm)

Default Value

"SHA256"

Remarks

Specifies the request's signature hash algorithm.


SB_HASH_ALGORITHM_SHA1	`SHA1`
SB_HASH_ALGORITHM_SHA224	`SHA224`
SB_HASH_ALGORITHM_SHA256	`SHA256`
SB_HASH_ALGORITHM_SHA384	`SHA384`
SB_HASH_ALGORITHM_SHA512	`SHA512`
SB_HASH_ALGORITHM_MD2	`MD2`
SB_HASH_ALGORITHM_MD4	`MD4`
SB_HASH_ALGORITHM_MD5	`MD5`
SB_HASH_ALGORITHM_RIPEMD160	`RIPEMD160`
SB_HASH_ALGORITHM_CRC32	`CRC32`
SB_HASH_ALGORITHM_SSL3	`SSL3`
SB_HASH_ALGORITHM_GOST_R3411_1994	`GOST1994`
SB_HASH_ALGORITHM_WHIRLPOOL	`WHIRLPOOL`
SB_HASH_ALGORITHM_POLY1305	`POLY1305`
SB_HASH_ALGORITHM_SHA3_224	`SHA3_224`
SB_HASH_ALGORITHM_SHA3_256	`SHA3_256`
SB_HASH_ALGORITHM_SHA3_384	`SHA3_384`
SB_HASH_ALGORITHM_SHA3_512	`SHA3_512`
SB_HASH_ALGORITHM_BLAKE2S_128	`BLAKE2S_128`
SB_HASH_ALGORITHM_BLAKE2S_160	`BLAKE2S_160`
SB_HASH_ALGORITHM_BLAKE2S_224	`BLAKE2S_224`
SB_HASH_ALGORITHM_BLAKE2S_256	`BLAKE2S_256`
SB_HASH_ALGORITHM_BLAKE2B_160	`BLAKE2B_160`
SB_HASH_ALGORITHM_BLAKE2B_256	`BLAKE2B_256`
SB_HASH_ALGORITHM_BLAKE2B_384	`BLAKE2B_384`
SB_HASH_ALGORITHM_BLAKE2B_512	`BLAKE2B_512`
SB_HASH_ALGORITHM_SHAKE_128	`SHAKE_128`
SB_HASH_ALGORITHM_SHAKE_256	`SHAKE_256`
SB_HASH_ALGORITHM_SHAKE_128_LEN	`SHAKE_128_LEN`
SB_HASH_ALGORITHM_SHAKE_256_LEN	`SHAKE_256_LEN`

external_crypto_key_id Property

The ID of the pre-shared key used for DC request authentication.

Syntax

def get_external_crypto_key_id() -> str: ...
def set_external_crypto_key_id(value: str) -> None: ...

external_crypto_key_id = property(get_external_crypto_key_id, set_external_crypto_key_id)

Default Value

Remarks

The ID of the pre-shared key used for DC request authentication.

Asynchronous DCAuth-driven communication requires that parties authenticate each other with a secret pre-shared cryptographic key. This provides an extra protection layer for the protocol and diminishes the risk of the private key becoming abused by foreign parties. Use this property to provide the pre-shared key identifier, and use external_crypto_key_secret to pass the key itself.

The same KeyID/KeySecret pair should be used on the DCAuth side for the signing requests to be accepted.

Note: The KeyID/KeySecret scheme is very similar to the AuthKey scheme used in various Cloud service providers to authenticate users.

Example: signer.ExternalCrypto.KeyID = "MainSigningKey"; signer.ExternalCrypto.KeySecret = "abcdef0123456789";

external_crypto_key_secret Property

The pre-shared key used for DC request authentication.

Syntax

def get_external_crypto_key_secret() -> str: ...
def set_external_crypto_key_secret(value: str) -> None: ...

external_crypto_key_secret = property(get_external_crypto_key_secret, set_external_crypto_key_secret)

Default Value

Remarks

The pre-shared key used for DC request authentication. This key must be set and match the key used by the DCAuth counterpart for the scheme to work.

Read more about configuring authentication in the external_crypto_key_id topic.

external_crypto_method Property

Specifies the asynchronous signing method.

Syntax

def get_external_crypto_method() -> int: ...
def set_external_crypto_method(value: int) -> None: ...

external_crypto_method = property(get_external_crypto_method, set_external_crypto_method)

Default Value

Remarks

Specifies the asynchronous signing method. This is typically defined by the DC server capabilities and setup.

Available options:


asmdPKCS1	`0`
asmdPKCS7	`1`

external_crypto_mode Property

Specifies the external cryptography mode.

Syntax

def get_external_crypto_mode() -> int: ...
def set_external_crypto_mode(value: int) -> None: ...

external_crypto_mode = property(get_external_crypto_mode, set_external_crypto_mode)

Default Value

Remarks

Specifies the external cryptography mode.

Available options:


ecmDefault	The default value (`0`)
ecmDisabled	Do not use DC or external signing (`1`)
ecmGeneric	Generic external signing with the OnExternalSign event (`2`)
ecmDCAuth	DCAuth signing (`3`)
ecmDCAuthJSON	DCAuth signing in JSON format (`4`)

external_crypto_public_key_algorithm Property

Provide the public key algorithm here if the certificate is not available on the pre-signing stage.

Syntax

def get_external_crypto_public_key_algorithm() -> str: ...
def set_external_crypto_public_key_algorithm(value: str) -> None: ...

external_crypto_public_key_algorithm = property(get_external_crypto_public_key_algorithm, set_external_crypto_public_key_algorithm)

Default Value

Remarks

Provide the public key algorithm here if the certificate is not available on the pre-signing stage.


SB_CERT_ALGORITHM_ID_RSA_ENCRYPTION	`rsaEncryption`
SB_CERT_ALGORITHM_MD2_RSA_ENCRYPTION	`md2withRSAEncryption`
SB_CERT_ALGORITHM_MD5_RSA_ENCRYPTION	`md5withRSAEncryption`
SB_CERT_ALGORITHM_SHA1_RSA_ENCRYPTION	`sha1withRSAEncryption`
SB_CERT_ALGORITHM_ID_DSA	`id-dsa`
SB_CERT_ALGORITHM_ID_DSA_SHA1	`id-dsa-with-sha1`
SB_CERT_ALGORITHM_DH_PUBLIC	`dhpublicnumber`
SB_CERT_ALGORITHM_SHA224_RSA_ENCRYPTION	`sha224WithRSAEncryption`
SB_CERT_ALGORITHM_SHA256_RSA_ENCRYPTION	`sha256WithRSAEncryption`
SB_CERT_ALGORITHM_SHA384_RSA_ENCRYPTION	`sha384WithRSAEncryption`
SB_CERT_ALGORITHM_SHA512_RSA_ENCRYPTION	`sha512WithRSAEncryption`
SB_CERT_ALGORITHM_ID_RSAPSS	`id-RSASSA-PSS`
SB_CERT_ALGORITHM_ID_RSAOAEP	`id-RSAES-OAEP`
SB_CERT_ALGORITHM_RSASIGNATURE_RIPEMD160	`ripemd160withRSA`
SB_CERT_ALGORITHM_ID_ELGAMAL	`elGamal`
SB_CERT_ALGORITHM_SHA1_ECDSA	`ecdsa-with-SHA1`
SB_CERT_ALGORITHM_RECOMMENDED_ECDSA	`ecdsa-recommended`
SB_CERT_ALGORITHM_SHA224_ECDSA	`ecdsa-with-SHA224`
SB_CERT_ALGORITHM_SHA256_ECDSA	`ecdsa-with-SHA256`
SB_CERT_ALGORITHM_SHA384_ECDSA	`ecdsa-with-SHA384`
SB_CERT_ALGORITHM_SHA512_ECDSA	`ecdsa-with-SHA512`
SB_CERT_ALGORITHM_EC	`id-ecPublicKey`
SB_CERT_ALGORITHM_SPECIFIED_ECDSA	`ecdsa-specified`
SB_CERT_ALGORITHM_GOST_R3410_1994	`id-GostR3410-94`
SB_CERT_ALGORITHM_GOST_R3410_2001	`id-GostR3410-2001`
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_1994	`id-GostR3411-94-with-GostR3410-94`
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_2001	`id-GostR3411-94-with-GostR3410-2001`
SB_CERT_ALGORITHM_SHA1_ECDSA_PLAIN	`ecdsa-plain-SHA1`
SB_CERT_ALGORITHM_SHA224_ECDSA_PLAIN	`ecdsa-plain-SHA224`
SB_CERT_ALGORITHM_SHA256_ECDSA_PLAIN	`ecdsa-plain-SHA256`
SB_CERT_ALGORITHM_SHA384_ECDSA_PLAIN	`ecdsa-plain-SHA384`
SB_CERT_ALGORITHM_SHA512_ECDSA_PLAIN	`ecdsa-plain-SHA512`
SB_CERT_ALGORITHM_RIPEMD160_ECDSA_PLAIN	`ecdsa-plain-RIPEMD160`
SB_CERT_ALGORITHM_WHIRLPOOL_RSA_ENCRYPTION	`whirlpoolWithRSAEncryption`
SB_CERT_ALGORITHM_ID_DSA_SHA224	`id-dsa-with-sha224`
SB_CERT_ALGORITHM_ID_DSA_SHA256	`id-dsa-with-sha256`
SB_CERT_ALGORITHM_SHA3_224_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-224`
SB_CERT_ALGORITHM_SHA3_256_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-256`
SB_CERT_ALGORITHM_SHA3_384_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-384`
SB_CERT_ALGORITHM_SHA3_512_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-512`
SB_CERT_ALGORITHM_SHA3_224_ECDSA	`id-ecdsa-with-sha3-224`
SB_CERT_ALGORITHM_SHA3_256_ECDSA	`id-ecdsa-with-sha3-256`
SB_CERT_ALGORITHM_SHA3_384_ECDSA	`id-ecdsa-with-sha3-384`
SB_CERT_ALGORITHM_SHA3_512_ECDSA	`id-ecdsa-with-sha3-512`
SB_CERT_ALGORITHM_SHA3_224_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-224`
SB_CERT_ALGORITHM_SHA3_256_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-256`
SB_CERT_ALGORITHM_SHA3_384_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-384`
SB_CERT_ALGORITHM_SHA3_512_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-512`
SB_CERT_ALGORITHM_ID_DSA_SHA3_224	`id-dsa-with-sha3-224`
SB_CERT_ALGORITHM_ID_DSA_SHA3_256	`id-dsa-with-sha3-256`
SB_CERT_ALGORITHM_BLAKE2S_128_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s128`
SB_CERT_ALGORITHM_BLAKE2S_160_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s160`
SB_CERT_ALGORITHM_BLAKE2S_224_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s224`
SB_CERT_ALGORITHM_BLAKE2S_256_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s256`
SB_CERT_ALGORITHM_BLAKE2B_160_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b160`
SB_CERT_ALGORITHM_BLAKE2B_256_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b256`
SB_CERT_ALGORITHM_BLAKE2B_384_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b384`
SB_CERT_ALGORITHM_BLAKE2B_512_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b512`
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA	`id-ecdsa-with-blake2s128`
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA	`id-ecdsa-with-blake2s160`
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA	`id-ecdsa-with-blake2s224`
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA	`id-ecdsa-with-blake2s256`
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA	`id-ecdsa-with-blake2b160`
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA	`id-ecdsa-with-blake2b256`
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA	`id-ecdsa-with-blake2b384`
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA	`id-ecdsa-with-blake2b512`
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s128`
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s160`
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s224`
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s256`
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b160`
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b256`
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b384`
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b512`
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_224	`id-dsa-with-blake2s224`
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_256	`id-dsa-with-blake2s256`
SB_CERT_ALGORITHM_EDDSA_ED25519	`id-Ed25519`
SB_CERT_ALGORITHM_EDDSA_ED448	`id-Ed448`
SB_CERT_ALGORITHM_EDDSA_ED25519_PH	`id-Ed25519ph`
SB_CERT_ALGORITHM_EDDSA_ED448_PH	`id-Ed448ph`
SB_CERT_ALGORITHM_EDDSA	`id-EdDSA`
SB_CERT_ALGORITHM_EDDSA_SIGNATURE	`id-EdDSA-sig`

fips_mode Property

Reserved.

Syntax

def get_fips_mode() -> bool: ...
def set_fips_mode(value: bool) -> None: ...

fips_mode = property(get_fips_mode, set_fips_mode)

Default Value

FALSE

Remarks

This property is reserved for future use.

force_compression Property

Enforces compression for the SSH layer.

Syntax

def get_force_compression() -> bool: ...
def set_force_compression(value: bool) -> None: ...

force_compression = property(get_force_compression, set_force_compression)

Default Value

FALSE

Remarks

Set this property before opening a connection to enforce compression of the SSH packets.

key_fingerprint_sha1 Property

Contains the SHA-1 fingerprint (hash) of the key.

Syntax

def get_key_fingerprint_sha1() -> str: ...

key_fingerprint_sha1 = property(get_key_fingerprint_sha1, None)

Default Value

Remarks

Contains the SHA-1 fingerprint (hash) of the key.

This property is read-only.

key_fingerprint_sha256 Property

Contains the SHA-256 fingerprint (hash) of the key.

Syntax

def get_key_fingerprint_sha256() -> str: ...

key_fingerprint_sha256 = property(get_key_fingerprint_sha256, None)

Default Value

Remarks

Contains the SHA-256 fingerprint (hash) of the key.

This property is read-only.

key_handle Property

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

def get_key_handle() -> int: ...
def set_key_handle(value: int) -> None: ...

key_handle = property(get_key_handle, set_key_handle)

Default Value

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

max_sftp_version Property

Higher SFTP version to support.

Syntax

def get_max_sftp_version() -> int: ...
def set_max_sftp_version(value: int) -> None: ...

max_sftp_version = property(get_max_sftp_version, set_max_sftp_version)

Default Value

Remarks

max_sftp_version and min_sftp_version properties control the range of SFTP protocol versions supported by this client.

min_sftp_version Property

Lower SFTP version to support.

Syntax

def get_min_sftp_version() -> int: ...
def set_min_sftp_version(value: int) -> None: ...

min_sftp_version = property(get_min_sftp_version, set_min_sftp_version)

Default Value

Remarks

max_sftp_version and min_sftp_version properties control the range of SFTP protocol versions to be supported by this client.

password Property

Specifies user's authentication password.

Syntax

def get_password() -> str: ...
def set_password(value: str) -> None: ...

password = property(get_password, set_password)

Default Value

Remarks

Use this property to provide an authentication password. This property is only applicable for password-based and keyboard-interactive authentication types.

pipeline_length Property

The number of parallelized transfer requests.

Syntax

def get_pipeline_length() -> int: ...
def set_pipeline_length(value: int) -> None: ...

pipeline_length = property(get_pipeline_length, set_pipeline_length)

Default Value

Remarks

This property controls the number of upload/download requests sent simultaneously. This speeds the transfer up, but may lead to issues with older/immature servers.

Typically you will only need to adjust this property if the default transfer settings (auto_adjust_transfer_block) don't work.

proxy_address Property

The IP address of the proxy server.

Syntax

def get_proxy_address() -> str: ...
def set_proxy_address(value: str) -> None: ...

proxy_address = property(get_proxy_address, set_proxy_address)

Default Value

Remarks

The IP address of the proxy server.

proxy_authentication Property

The authentication type used by the proxy server.

Syntax

def get_proxy_authentication() -> int: ...
def set_proxy_authentication(value: int) -> None: ...

proxy_authentication = property(get_proxy_authentication, set_proxy_authentication)

Default Value

Remarks

The authentication type used by the proxy server.


patNoAuthentication	`0`
patBasic	`1`
patDigest	`2`
patNTLM	`3`

proxy_password Property

The password to authenticate to the proxy server.

Syntax

def get_proxy_password() -> str: ...
def set_proxy_password(value: str) -> None: ...

proxy_password = property(get_proxy_password, set_proxy_password)

Default Value

Remarks

The password to authenticate to the proxy server.

proxy_port Property

The port on the proxy server to connect to.

Syntax

def get_proxy_port() -> int: ...
def set_proxy_port(value: int) -> None: ...

proxy_port = property(get_proxy_port, set_proxy_port)

Default Value

Remarks

The port on the proxy server to connect to.

proxy_proxy_type Property

The type of the proxy server.

Syntax

def get_proxy_proxy_type() -> int: ...
def set_proxy_proxy_type(value: int) -> None: ...

proxy_proxy_type = property(get_proxy_proxy_type, set_proxy_proxy_type)

Default Value

Remarks

The type of the proxy server.

The WebTunnel proxy is also known as HTTPS proxy. Unlike HTTP proxy, HTTPS proxy (WebTunnel) provides end-to-end security.


cptNone	`0`
cptSocks4	`1`
cptSocks5	`2`
cptWebTunnel	`3`
cptHTTP	`4`

proxy_request_headers Property

Contains HTTP request headers for WebTunnel and HTTP proxy.

Syntax

def get_proxy_request_headers() -> str: ...
def set_proxy_request_headers(value: str) -> None: ...

proxy_request_headers = property(get_proxy_request_headers, set_proxy_request_headers)

Default Value

Remarks

Contains HTTP request headers for WebTunnel and HTTP proxy.

proxy_response_body Property

Contains the HTTP or HTTPS (WebTunnel) proxy response body.

Syntax

def get_proxy_response_body() -> str: ...
def set_proxy_response_body(value: str) -> None: ...

proxy_response_body = property(get_proxy_response_body, set_proxy_response_body)

Default Value

Remarks

Contains the HTTP or HTTPS (WebTunnel) proxy response body.

proxy_response_headers Property

Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.

Syntax

def get_proxy_response_headers() -> str: ...
def set_proxy_response_headers(value: str) -> None: ...

proxy_response_headers = property(get_proxy_response_headers, set_proxy_response_headers)

Default Value

Remarks

Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.

proxy_use_ipv6 Property

Specifies whether IPv6 should be used when connecting through the proxy.

Syntax

def get_proxy_use_ipv6() -> bool: ...
def set_proxy_use_ipv6(value: bool) -> None: ...

proxy_use_ipv6 = property(get_proxy_use_ipv6, set_proxy_use_ipv6)

Default Value

FALSE

Remarks

Specifies whether IPv6 should be used when connecting through the proxy.

proxy_use_proxy Property

Enables or disables proxy-driven connection.

Syntax

def get_proxy_use_proxy() -> bool: ...
def set_proxy_use_proxy(value: bool) -> None: ...

proxy_use_proxy = property(get_proxy_use_proxy, set_proxy_use_proxy)

Default Value

FALSE

Remarks

Enables or disables proxy-driven connection.

proxy_username Property

Specifies the username credential for proxy authentication.

Syntax

def get_proxy_username() -> str: ...
def set_proxy_username(value: str) -> None: ...

proxy_username = property(get_proxy_username, set_proxy_username)

Default Value

Remarks

Specifies the username credential for proxy authentication.

server_key_algorithm Property

Specifies the key algorithm.

Syntax

def get_server_key_algorithm() -> str: ...

server_key_algorithm = property(get_server_key_algorithm, None)

Default Value

Remarks

Specifies the key algorithm.

This property is read-only.

server_key_bits Property

The number of bits in the key: the more the better, 2048 or 4096 are typical values.

Syntax

def get_server_key_bits() -> int: ...

server_key_bits = property(get_server_key_bits, None)

Default Value

Remarks

The number of bits in the key: the more the better, 2048 or 4096 are typical values.

This property is read-only.

server_key_comment Property

The comment for the public key.

Syntax

def get_server_key_comment() -> str: ...

server_key_comment = property(get_server_key_comment, None)

Default Value

Remarks

The comment for the public key.

This property is read-only.

server_key_curve Property

Specifies the elliptical curve when EC cryptography is used.

Syntax

def get_server_key_curve() -> str: ...

server_key_curve = property(get_server_key_curve, None)

def get_server_key_dssx() -> bytes: ...

server_key_dssx = property(get_server_key_dssx, None)

Remarks

The X (Private key) parameter of the DSS signature key. The string should contain the binary data of X.

This parameter may be empty if there's no need to sign data with this key (e.g. if the key is a server public key needed only to authenticate the server).

This property is read-only.

server_key_dssy Property

The Y (Public key) parameter of the DSS signature key.

Syntax

def get_server_key_dssy() -> bytes: ...

server_key_dssy = property(get_server_key_dssy, None)

Remarks

The Y (Public key) parameter of the DSS signature key. The string should contain the binary data of Y.

This property is read-only.

server_key_eccd Property

The value of the secret key (the order of the public key, D) if elliptic curve (EC) cryptography is used.

Syntax

def get_server_key_eccd() -> bytes: ...

server_key_eccd = property(get_server_key_eccd, None)

Remarks

The value of the secret key (the order of the public key, D) if elliptic curve (EC) cryptography is used. The string should contain the binary data of D.

This property is read-only.

server_key_eccqx Property

The value of the X coordinate of the public key if elliptic curve (EC) cryptography is used.

Syntax

def get_server_key_eccqx() -> bytes: ...

server_key_eccqx = property(get_server_key_eccqx, None)

Remarks

The value of the X coordinate of the public key if elliptic curve (EC) cryptography is used. The string should contain the binary data of X.

This property is read-only.

server_key_eccqy Property

The value of the Y coordinate of the public key if elliptic curve (EC) cryptography is used.

Syntax

def get_server_key_eccqy() -> bytes: ...

server_key_eccqy = property(get_server_key_eccqy, None)

Remarks

The value of the Y coordinate of the public key if elliptic curve (EC) cryptography is used. The string should contain the binary data of Y.

This property is read-only.

server_key_ed_private Property

The value of the private key if EdDSA (Edwards-curve Digital Signature Algorithm) algorithm is used.

Syntax

def get_server_key_ed_private() -> bytes: ...

server_key_ed_private = property(get_server_key_ed_private, None)

Remarks

The value of the private key if EdDSA (Edwards-curve Digital Signature Algorithm) algorithm is used.

This property is read-only.

server_key_ed_public Property

The value of the public key if EdDSA (Edwards-curve Digital Signature Algorithm) algorithm is used.

Syntax

def get_server_key_ed_public() -> bytes: ...

server_key_ed_public = property(get_server_key_ed_public, None)

Remarks

The value of the public key if EdDSA (Edwards-curve Digital Signature Algorithm) algorithm is used.

This property is read-only.

server_key_fingerprint_md5 Property

Contains the MD5 fingerprint (hash) of the key.

Syntax

def get_server_key_fingerprint_md5() -> str: ...

server_key_fingerprint_md5 = property(get_server_key_fingerprint_md5, None)

Default Value

Remarks

Contains the MD5 fingerprint (hash) of the key.

This property is read-only.

server_key_fingerprint_sha1 Property

Contains the SHA-1 fingerprint (hash) of the key.

Syntax

def get_server_key_fingerprint_sha1() -> str: ...

server_key_fingerprint_sha1 = property(get_server_key_fingerprint_sha1, None)

Default Value

Remarks

Contains the SHA-1 fingerprint (hash) of the key.

This property is read-only.

server_key_fingerprint_sha256 Property

Contains the SHA-256 fingerprint (hash) of the key.

Syntax

def get_server_key_fingerprint_sha256() -> str: ...

server_key_fingerprint_sha256 = property(get_server_key_fingerprint_sha256, None)

Default Value

Remarks

Contains the SHA-256 fingerprint (hash) of the key.

This property is read-only.

server_key_handle Property

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

def get_server_key_handle() -> int: ...

server_key_handle = property(get_server_key_handle, None)

Default Value

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

This property is read-only.

server_key_is_extractable Property

Whether the key is extractable (e.

Syntax

def get_server_key_is_extractable() -> bool: ...

server_key_is_extractable = property(get_server_key_is_extractable, None)

Default Value

FALSE

Remarks

Whether the key is extractable (e.g., from a security token), or not.

This property is read-only.

server_key_is_private Property

Whether this key is a private key or not.

Syntax

def get_server_key_is_private() -> bool: ...

server_key_is_private = property(get_server_key_is_private, None)

Default Value

FALSE

Remarks

Whether this key is a private key or not.

This property is read-only.

server_key_is_public Property

Whether this key is a public key or not.

Syntax

def get_server_key_is_public() -> bool: ...

server_key_is_public = property(get_server_key_is_public, None)

Default Value

FALSE

Remarks

Whether this key is a public key or not.

This property is read-only.

server_key_kdf_rounds Property

Returns the number of iterations of the Key Derivation Function (KDF) used to generate this key.

Syntax

def get_server_key_kdf_rounds() -> int: ...

server_key_kdf_rounds = property(get_server_key_kdf_rounds, None)

Default Value

Remarks

Returns the number of iterations of the Key Derivation Function (KDF) used to generate this key.

This property is read-only.

server_key_kdf_salt Property

The salt value used by the Key Derivation Function (KDF) to generate this key.

Syntax

def get_server_key_kdf_salt() -> bytes: ...

server_key_kdf_salt = property(get_server_key_kdf_salt, None)

Remarks

The salt value used by the Key Derivation Function (KDF) to generate this key.

This property is read-only.

server_key_key_format Property

Specifies the format in which the key is stored.

Syntax

def get_server_key_key_format() -> int: ...

server_key_key_format = property(get_server_key_key_format, None)

Default Value

Remarks

Specifies the format in which the key is stored.


ckfOpenSSH	`0`
ckfOpenSSH2	`1`
ckfIETF	`2`
ckfPuTTY	`3`
ckfX509	`4`
ckfBinary	`5`
ckfSSH1	`6`
ckfPGP	`7`
ckfPKCS8	`8`
ckfPuTTY3	`9`

This property is read-only.

server_key_key_protection_algorithm Property

Specifies the key protection algorithm.

Syntax

def get_server_key_key_protection_algorithm() -> str: ...

server_key_key_protection_algorithm = property(get_server_key_key_protection_algorithm, None)

def get_server_key_subject() -> str: ...

server_key_subject = property(get_server_key_subject, None)

Default Value

Remarks

Specifies the public key owner (subject). This property is used only for IETF-keys.

This property is read-only.

socket_dns_mode Property

Selects the DNS resolver to use: the class's (secure) built-in one, or the one provided by the system.

Syntax

def get_socket_dns_mode() -> int: ...
def set_socket_dns_mode(value: int) -> None: ...

socket_dns_mode = property(get_socket_dns_mode, set_socket_dns_mode)

Default Value

Remarks

Selects the DNS resolver to use: the component's (secure) built-in one, or the one provided by the system.


dmAuto	`0`
dmPlatform	`1`
dmOwn	`2`
dmOwnSecure	`3`

socket_dns_port Property

Specifies the port number to be used for sending queries to the DNS server.

Syntax

def get_socket_dns_port() -> int: ...
def set_socket_dns_port(value: int) -> None: ...

socket_dns_port = property(get_socket_dns_port, set_socket_dns_port)

Default Value

Remarks

Specifies the port number to be used for sending queries to the DNS server.

socket_dns_query_timeout Property

The timeout (in milliseconds) for each DNS query.

Syntax

def get_socket_dns_query_timeout() -> int: ...
def set_socket_dns_query_timeout(value: int) -> None: ...

socket_dns_query_timeout = property(get_socket_dns_query_timeout, set_socket_dns_query_timeout)

Default Value

Remarks

The timeout (in milliseconds) for each DNS query. The value of 0 indicates an infinite timeout.

socket_dns_servers Property

The addresses of DNS servers to use for address resolution, separated by commas or semicolons.

Syntax

def get_socket_dns_servers() -> str: ...
def set_socket_dns_servers(value: str) -> None: ...

socket_dns_servers = property(get_socket_dns_servers, set_socket_dns_servers)

Default Value

Remarks

The addresses of DNS servers to use for address resolution, separated by commas or semicolons.

socket_dns_total_timeout Property

The timeout (in milliseconds) for the whole resolution process.

Syntax

def get_socket_dns_total_timeout() -> int: ...
def set_socket_dns_total_timeout(value: int) -> None: ...

socket_dns_total_timeout = property(get_socket_dns_total_timeout, set_socket_dns_total_timeout)

Default Value

Remarks

The timeout (in milliseconds) for the whole resolution process. The value of 0 indicates an infinite timeout.

socket_incoming_speed_limit Property

The maximum number of bytes to read from the socket, per second.

Syntax

def get_socket_incoming_speed_limit() -> int: ...
def set_socket_incoming_speed_limit(value: int) -> None: ...

socket_incoming_speed_limit = property(get_socket_incoming_speed_limit, set_socket_incoming_speed_limit)

Default Value

Remarks

The maximum number of bytes to read from the socket, per second.

socket_local_address Property

The local network interface to bind the socket to.

Syntax

def get_socket_local_address() -> str: ...
def set_socket_local_address(value: str) -> None: ...

socket_local_address = property(get_socket_local_address, set_socket_local_address)

Default Value

Remarks

The local network interface to bind the socket to.

socket_local_port Property

The local port number to bind the socket to.

Syntax

def get_socket_local_port() -> int: ...
def set_socket_local_port(value: int) -> None: ...

socket_local_port = property(get_socket_local_port, set_socket_local_port)

Default Value

Remarks

The local port number to bind the socket to.

socket_outgoing_speed_limit Property

The maximum number of bytes to write to the socket, per second.

Syntax

def get_socket_outgoing_speed_limit() -> int: ...
def set_socket_outgoing_speed_limit(value: int) -> None: ...

socket_outgoing_speed_limit = property(get_socket_outgoing_speed_limit, set_socket_outgoing_speed_limit)

Default Value

Remarks

The maximum number of bytes to write to the socket, per second.

socket_timeout Property

The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.

Syntax

def get_socket_timeout() -> int: ...
def set_socket_timeout(value: int) -> None: ...

socket_timeout = property(get_socket_timeout, set_socket_timeout)

Default Value

60000

Remarks

The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.

If Timeout is set to 0, a socket operation will expire after the system-default timeout (2 hrs 8 min for TCP stack).

socket_use_ipv6 Property

Enables or disables IP protocol version 6.

Syntax

def get_socket_use_ipv6() -> bool: ...
def set_socket_use_ipv6(value: bool) -> None: ...

socket_use_ipv6 = property(get_socket_use_ipv6, set_socket_use_ipv6)

Default Value

FALSE

Remarks

Enables or disables IP protocol version 6.

ssh_settings_auto_adjust_ciphers Property

Whether the SSH client should adjust its list of supported ciphers 'on-the-fly' for greater compatibility with the server it is connecting to.

Syntax

def get_ssh_settings_auto_adjust_ciphers() -> bool: ...
def set_ssh_settings_auto_adjust_ciphers(value: bool) -> None: ...

ssh_settings_auto_adjust_ciphers = property(get_ssh_settings_auto_adjust_ciphers, set_ssh_settings_auto_adjust_ciphers)

Default Value

TRUE

Remarks

Whether the SSH client should adjust its list of supported ciphers 'on-the-fly' for greater compatibility with the server it is connecting to.

ssh_settings_base_configuration Property

Allows to choose base configuration of SSH settings, tuned up for different purposes such as high security or higher compatibility.

Syntax

def get_ssh_settings_base_configuration() -> int: ...
def set_ssh_settings_base_configuration(value: int) -> None: ...

ssh_settings_base_configuration = property(get_ssh_settings_base_configuration, set_ssh_settings_base_configuration)

Default Value

Remarks

Allows to choose base configuration of SSH settings, tuned up for different purposes such as high security or higher compatibility.

ssh_settings_compression_algorithms Property

A list of session compression algorithms separated with commas or semicolons.

Syntax

def get_ssh_settings_compression_algorithms() -> str: ...
def set_ssh_settings_compression_algorithms(value: str) -> None: ...

ssh_settings_compression_algorithms = property(get_ssh_settings_compression_algorithms, set_ssh_settings_compression_algorithms)

Default Value

Remarks

A list of session compression algorithms separated with commas or semicolons. Each algorithm in the list may be prefixed with a minus sign (-) to indicate that the algorithm should be disabled rather than enabled. Besides the specific algorithm names, this property supports the all (and -all) aliases that allow to blanketly enable or disable all compression algorithms at once.

Note: the list of algorithms provided to this property alters the baseline list of compression algorithms pre-configured for this component. Remember to start your algorithm string with -all; if you need to only enable a specific fixed set of algorithms. The list of supported compression algorithms is provided below:

none
zlib
zlib@openssh.com

ssh_settings_compression_level Property

Possible values for the Compression Level range from 0 (minimum compression) to 9 (maximum compression).

Syntax

def get_ssh_settings_compression_level() -> int: ...
def set_ssh_settings_compression_level(value: int) -> None: ...

ssh_settings_compression_level = property(get_ssh_settings_compression_level, set_ssh_settings_compression_level)

Default Value

Remarks

Possible values for the Compression Level range from 0 (minimum compression) to 9 (maximum compression). This setting is ignored if compression wasn't accepted.

ssh_settings_default_window_size Property

The SSH window size specifies how many bytes the client can send to the server in the command channel without obtaining pre-authorization for the further send from the server.

Syntax

def get_ssh_settings_default_window_size() -> int: ...
def set_ssh_settings_default_window_size(value: int) -> None: ...

ssh_settings_default_window_size = property(get_ssh_settings_default_window_size, set_ssh_settings_default_window_size)

Default Value

2048000

Remarks

The SSH window size specifies how many bytes the client can send to the server in the command channel without obtaining pre-authorization for the further send from the server.

ssh_settings_encryption_algorithms Property

A list of session encryption algorithms separated with commas or semicolons.

Syntax

def get_ssh_settings_encryption_algorithms() -> str: ...
def set_ssh_settings_encryption_algorithms(value: str) -> None: ...

ssh_settings_encryption_algorithms = property(get_ssh_settings_encryption_algorithms, set_ssh_settings_encryption_algorithms)

Default Value

Remarks

A list of session encryption algorithms separated with commas or semicolons. Each algorithm in the list may be prefixed with a minus sign (-) to indicate that the algorithm should be disabled rather than enabled. Besides the specific algorithm names, this property supports the all (and -all) aliases that allow to blanketly enable or disable all encryption algorithms at once.

Note: the list of algorithms provided to this property alters the baseline list of encryption algorithms pre-configured for this component. Remember to start your algorithm string with -all; if you need to only enable a specific fixed set of algorithms. The list of supported encryption algorithms is provided below:

3des-cbc
blowfish-cbc
twofish256-cbc
twofish192-cbc
twofish128-cbc
aes256-cbc
aes192-cbc
aes128-cbc
serpent256-cbc
serpent192-cbc
serpent128-cbc
arcfour
idea-cbc
cast128-cbc
none
des-cbc
aes128-ctr
aes192-ctr
aes256-ctr
3des-ctr
blowfish-ctr
twofish128-ctr
twofish192-ctr
twofish256-ctr
serpent128-ctr
serpent192-ctr
serpent256-ctr
idea-ctr
cast128-ctr
arcfour128
arcfour256
aes128-gcm
aes256-gcm
aes128-gcm@openssh.com
aes256-gcm@openssh.com
chacha20-poly1305
chacha20-poly1305@openssh.com

ssh_settings_force_compression Property

Whether the SSH client should explicitly request compression.

Syntax

def get_ssh_settings_force_compression() -> bool: ...
def set_ssh_settings_force_compression(value: bool) -> None: ...

ssh_settings_force_compression = property(get_ssh_settings_force_compression, set_ssh_settings_force_compression)

Default Value

FALSE

Remarks

Whether the SSH client should explicitly request compression.

If ForceCompression is False, compression will be used only if the server doesn't support algorithms without compression.

ssh_settings_gss_auth_types Property

A comma-separated list of authentication types.

Syntax

def get_ssh_settings_gss_auth_types() -> str: ...
def set_ssh_settings_gss_auth_types(value: str) -> None: ...

ssh_settings_gss_auth_types = property(get_ssh_settings_gss_auth_types, set_ssh_settings_gss_auth_types)

Default Value

Remarks

A comma-separated list of authentication types. Two types are currently supported: gssapi-with-mic and gssapi-keyex.

ssh_settings_gss_delegate_creds Property

Switches credential delegation on or off.

Syntax

def get_ssh_settings_gss_delegate_creds() -> bool: ...
def set_ssh_settings_gss_delegate_creds(value: bool) -> None: ...

ssh_settings_gss_delegate_creds = property(get_ssh_settings_gss_delegate_creds, set_ssh_settings_gss_delegate_creds)

Default Value

FALSE

Remarks

Switches credential delegation on or off.

ssh_settings_gss_hostname Property

The GSS host name, in form of a FQDN (e.

Syntax

def get_ssh_settings_gss_hostname() -> str: ...
def set_ssh_settings_gss_hostname(value: str) -> None: ...

ssh_settings_gss_hostname = property(get_ssh_settings_gss_hostname, set_ssh_settings_gss_hostname)

Default Value

Remarks

The GSS host name, in form of a FQDN (e.g. hostname.com), a principal name (e.g. 'host@hostname.com), or a cross-real ticket-granting ticket (e.g. krbtgt/test.com@example.com).

ssh_settings_gss_lib Property

A path to the GSS-API library (DLL or SO).

Syntax

def get_ssh_settings_gss_lib() -> str: ...
def set_ssh_settings_gss_lib(value: str) -> None: ...

ssh_settings_gss_lib = property(get_ssh_settings_gss_lib, set_ssh_settings_gss_lib)

Default Value

Remarks

A path to the GSS-API library (DLL or SO).

ssh_settings_gss_mechanisms Property

A comma-separated list of GSS mechanisms to use.

Syntax

def get_ssh_settings_gss_mechanisms() -> str: ...
def set_ssh_settings_gss_mechanisms(value: str) -> None: ...

ssh_settings_gss_mechanisms = property(get_ssh_settings_gss_mechanisms, set_ssh_settings_gss_mechanisms)

Default Value

Remarks

A comma-separated list of GSS mechanisms to use. Two values are currently supported: lib and SSPI.

ssh_settings_gss_protocols Property

A comma-separated list of SSPI protocols.

Syntax

def get_ssh_settings_gss_protocols() -> str: ...
def set_ssh_settings_gss_protocols(value: str) -> None: ...

ssh_settings_gss_protocols = property(get_ssh_settings_gss_protocols, set_ssh_settings_gss_protocols)

Default Value

Remarks

A comma-separated list of SSPI protocols. Two protocols are currently supported: kerberos and NTLM.

ssh_settings_handshake_timeout Property

Specifies the maximal time for the SSH handshake to proceed, in seconds.

Syntax

def get_ssh_settings_handshake_timeout() -> int: ...
def set_ssh_settings_handshake_timeout(value: int) -> None: ...

ssh_settings_handshake_timeout = property(get_ssh_settings_handshake_timeout, set_ssh_settings_handshake_timeout)

Default Value

Remarks

Specifies the maximal time for the SSH handshake to proceed, in seconds. If the handshake is not completed within this period, the session is aborted.

ssh_settings_kex_algorithms Property

A list of key exchange algorithms separated with commas or semicolons.

Syntax

def get_ssh_settings_kex_algorithms() -> str: ...
def set_ssh_settings_kex_algorithms(value: str) -> None: ...

ssh_settings_kex_algorithms = property(get_ssh_settings_kex_algorithms, set_ssh_settings_kex_algorithms)

Default Value

Remarks

A list of key exchange algorithms separated with commas or semicolons. Each algorithm in the list may be prefixed with a minus sign (-) to indicate that the algorithm should be disabled rather than enabled. Besides the specific algorithm names, this property supports the all (and -all) aliases that allow to blanketly enable or disable all key exchange algorithms at once.

Note: the list of algorithms provided to this property alters the baseline list of key exchange algorithms pre-configured for this component. Remember to start your algorithm string with -all; if you need to only enable a specific fixed set of algorithms. The list of supported kex algorithms is provided below:

diffie-hellman-group-exchange-sha1
diffie-hellman-group1-sha1
diffie-hellman-group14-sha1
diffie-hellman-group-exchange-sha256
rsa1024-sha1
rsa2048-sha256
ecdh-sha2-nistp256
ecdh-sha2-nistp384
ecdh-sha2-nistp521
ecdh-sha2-nistk163
ecdh-sha2-nistp192
ecdh-sha2-nistp224
ecdh-sha2-nistk233
ecdh-sha2-nistb233
ecdh-sha2-nistk283
ecdh-sha2-nistk409
ecdh-sha2-nistb409
ecdh-sha2-nistt571
ecdh-sha2-curve25519
curve25519-sha256@libssh.org
curve448-sha512@libssh.org
diffie-hellman-group14-sha256
diffie-hellman-group15-sha512
diffie-hellman-group16-sha512
diffie-hellman-group17-sha512
diffie-hellman-group18-sha512

ssh_settings_mac_algorithms Property

A list of MAC (for message authentication code ) algorithms separated with commas or semicolons.

Syntax

def get_ssh_settings_mac_algorithms() -> str: ...
def set_ssh_settings_mac_algorithms(value: str) -> None: ...

ssh_settings_mac_algorithms = property(get_ssh_settings_mac_algorithms, set_ssh_settings_mac_algorithms)

Default Value

Remarks

A list of MAC (for message authentication code) algorithms separated with commas or semicolons. Each algorithm in the list may be prefixed with a minus sign (-) to indicate that the algorithm should be disabled rather than enabled. Besides the specific algorithm names, this property supports the all (and -all) aliases that allow to blanketly enable or disable all MAC algorithms at once.

Note: the list of algorithms provided to this property alters the baseline list of MAC algorithms pre-configured for this component. Remember to start your algorithm string with -all; if you need to only enable a specific fixed set of algorithms. The list of supported MAC algorithms is provided below:

hmac-sha1
hmac-sha1-96
hmac-md5
hmac-md5-96
none
hmac-ripemd160
hmac-ripemd
hmac-ripemd160@openssh.com
hmac-sha256@ssh.com
hmac-sha256-96@ssh.com
umac-32@openssh.com
umac-64@openssh.com
umac-96@openssh.com
umac-128@openssh.com
hmac-sha2-256
hmac-sha2-512
aes128-gcm
aes256-gcm
chacha20-poly1305@openssh.com
hmac-sha2-256-etm@openssh.com
hmac-sha2-512-etm@openssh.com

ssh_settings_max_ssh_packet_size Property

Specifies the maximum length of one SSH packet in bytes.

Syntax

def get_ssh_settings_max_ssh_packet_size() -> int: ...
def set_ssh_settings_max_ssh_packet_size(value: int) -> None: ...

ssh_settings_max_ssh_packet_size = property(get_ssh_settings_max_ssh_packet_size, set_ssh_settings_max_ssh_packet_size)

Default Value

262144

Remarks

Specifies the maximum length of one SSH packet in bytes.

ssh_settings_min_window_size Property

Specifies the minimal internal window size.

Syntax

def get_ssh_settings_min_window_size() -> int: ...
def set_ssh_settings_min_window_size(value: int) -> None: ...

ssh_settings_min_window_size = property(get_ssh_settings_min_window_size, set_ssh_settings_min_window_size)

Default Value

2048

Remarks

Specifies the minimal internal window size. When the minimal window size is reached, the 'window extension' request is sent to the server. This request notifies the server that the window was extended, and it can send more data.

ssh_settings_obfuscate_handshake Property

Enables or disables handshake obfuscation.

Syntax

def get_ssh_settings_obfuscate_handshake() -> bool: ...
def set_ssh_settings_obfuscate_handshake(value: bool) -> None: ...

ssh_settings_obfuscate_handshake = property(get_ssh_settings_obfuscate_handshake, set_ssh_settings_obfuscate_handshake)

Default Value

FALSE

Remarks

Enables or disables handshake obfuscation.

ssh_settings_obfuscation_password Property

Specifies the password used to encrypt the handshake when ObfuscateHandshake is set.

Syntax

def get_ssh_settings_obfuscation_password() -> str: ...
def set_ssh_settings_obfuscation_password(value: str) -> None: ...

ssh_settings_obfuscation_password = property(get_ssh_settings_obfuscation_password, set_ssh_settings_obfuscation_password)

Default Value

Remarks

Specifies the password used to encrypt the handshake when ObfuscateHandshake is set.

ssh_settings_public_key_algorithms Property

A list of public key algorithms separated with commas or semicolons.

Syntax

def get_ssh_settings_public_key_algorithms() -> str: ...
def set_ssh_settings_public_key_algorithms(value: str) -> None: ...

ssh_settings_public_key_algorithms = property(get_ssh_settings_public_key_algorithms, set_ssh_settings_public_key_algorithms)

Default Value

Remarks

A list of public key algorithms separated with commas or semicolons. Each algorithm in the list may be prefixed with a minus sign (-) to indicate that the algorithm should be disabled rather than enabled. Besides the specific algorithm names, this property supports the all (and -all) aliases that allow to blanketly enable or disable all public key algorithms at once.

Note: the list of algorithms provided to this property alters the baseline list of public key algorithms pre-configured for this component. Remember to start your algorithm string with -all; if you need to only enable a specific fixed set of algorithms. The list of supported public key algorithms is provided below:

ssh-dss
ssh-rsa
x509v3-sign-rsa
x509v3-sign-dss
spki-sign-rsa,
spki-sign-dss
pgp-sign-rsa
pgp-sign-dss
ecdsa-sha2-nistp256
ecdsa-sha2-nistp384
ecdsa-sha2-nistp521
ecdsa-sha2-nistk163
ecdsa-sha2-nistp192
ecdsa-sha2-nistp224
ecdsa-sha2-nistk233
ecdsa-sha2-nistb233
ecdsa-sha2-nistk283
ecdsa-sha2-nistk409
ecdsa-sha2-nistb409
ecdsa-sha2-nistt571,
ecdsa-sha2-curve25519
x509v3-ssh-rsa
x509v3-ssh-dss
x509v3-rsa2048-sha256
x509v3-ecdsa-sha2-nistp256
x509v3-ecdsa-sha2-nistp384
x509v3-ecdsa-sha2-nistp521
x509v3-ecdsa-sha2-nistk163
x509v3-ecdsa-sha2-nistp192
x509v3-ecdsa-sha2-nistp224
x509v3-ecdsa-sha2-nistk233
x509v3-ecdsa-sha2-nistb233
x509v3-ecdsa-sha2-nistk283
x509v3-ecdsa-sha2-nistk409
x509v3-ecdsa-sha2-nistb409
x509v3-ecdsa-sha2-nistt571
x509v3-ecdsa-sha2-curve25519
ssh-ed25519
ssh-ed448
rsa-sha2-256
rsa-sha2-512

ssh_settings_request_password_change Property

Whether to request a password change when connecting.

Syntax

def get_ssh_settings_request_password_change() -> bool: ...
def set_ssh_settings_request_password_change(value: bool) -> None: ...

ssh_settings_request_password_change = property(get_ssh_settings_request_password_change, set_ssh_settings_request_password_change)

Syntax

def get_ssh_settings_versions() -> int: ...
def set_ssh_settings_versions(value: int) -> None: ...

ssh_settings_versions = property(get_ssh_settings_versions, set_ssh_settings_versions)

Default Value

Remarks

Specifies enabled SSH protocol versions (1 or 2).

trusted_keys_file Property

A file containing the keys of authorized servers.

Syntax

def get_trusted_keys_file() -> str: ...
def set_trusted_keys_file(value: str) -> None: ...

trusted_keys_file = property(get_trusted_keys_file, set_trusted_keys_file)

Default Value

Remarks

Use this property to provide a path to the 'authorized_keys' file to be used by the client.

upload_block_size Property

The upload block size in bytes.

Syntax

def get_upload_block_size() -> int: ...
def set_upload_block_size(value: int) -> None: ...

upload_block_size = property(get_upload_block_size, set_upload_block_size)

Default Value

32256

Remarks

Use this property to manually control the size of upload blocks. Typically you will only need to adjust this property if the default transfer settings (auto_adjust_transfer_block) don't work.

username Property

The client's username to authenticate to the server.

Syntax

def get_username() -> str: ...
def set_username(value: str) -> None: ...

username = property(get_username, set_username)

Default Value

Remarks

Use this property to provide an authentication username (login). This property is only applicable for password-based and keyboard-interactive authentication types.

use_utf8 Property

Enables UTF8 for all string content.

Syntax

def get_use_utf8() -> bool: ...
def set_use_utf8(value: bool) -> None: ...

use_utf8 = property(get_use_utf8, set_use_utf8)

Default Value

FALSE

Remarks

If UseUTF8 is true, the class expects all downloaded filenames to be encoded in UTF-8. Set UseUTF8 to false if you connect to a server that does not support UTF8 (e.g., OpenSSH). In this case the file names will be interpreted in the default character set.

version Property

The SFTP version negotiated.

Syntax

def get_version() -> int: ...

version = property(get_version, None)

Default Value

Remarks

Use this property to get the negotiated SFTP version.

This property is read-only.

absolute_path Method

Requests the absolute path for a relative path.

Syntax

def absolute_path(remote_path: str) -> str: ...

Remarks

Use this method to ask the SFTP server to convert a relative path to an absolute.

change_dir Method

Changes current working directory on the server.

Syntax

def change_dir(remote_dir: str) -> None: ...

Remarks

Changes current working directory on the server to RemoteDir.

config Method

Sets or retrieves a configuration setting.

Syntax

def config(configuration_string: str) -> str: ...

Remarks

config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

connect Method

Connects to an SFTP server.

Syntax

def connect(address: str, port: int) -> None: ...

Remarks

Use this method to connect to the SFTP server identified via its Address and Port.

create_link Method

Creates a symbolic or hard link to a remote file.

Syntax

def create_link(link_path: str, target_path: str, hard_link: bool) -> None: ...

Remarks

Use this method to create a symbolic or hard link on the server. Provide the name of the new link object via the LinkPath parameter, and the destinating file or directory path via the TargetPath parameter. HardLink specifies whether the new link should be hard (true) or symbolic (false).

delete_dir Method

Removes directory from the SFTP server.

Syntax

def delete_dir(remote_dir: str) -> None: ...

Remarks

Use RemoteDir to provide a path to the directory to be deleted.

delete_file Method

Deletes a file from the SFTP server.

Syntax

def delete_file(remote_file: str) -> None: ...

Remarks

Use the RemoteFile parameter to specify the name of the file to delete.

delete_files Method

Deletes a group of files from the SFTP server.

Syntax

def delete_files(remote_path: str, mask: str, case_sensitive: bool, recursive: bool) -> None: ...

Remarks

Use this method to delete a group of files from the SFTP server. Specify the files to be deleted via RemotePath and Mask parameters. Use CaseSensitive and Recursive parameters to tune up the operation.

This method is a more efficient way to delete a group of files than deleting them one by one.

dir_exists Method

Checks if a directory exists on the SFTP server.

Syntax

def dir_exists(remote_dir: str) -> bool: ...

Remarks

RemoteDir specifies the name of the remote directory to check for existence.

disconnect Method

Disconnects from the SFTP server.

Syntax

def disconnect() -> None: ...

Remarks

Call this method to disconnect from the SFTP server.

do_action Method

Performs an additional action.

Syntax

def do_action(action_id: str, action_params: str) -> str: ...

Remarks

do_action is a generic method available in every class. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.

The unique identifier (case insensitive) of the action is provided in the ActionID parameter.

ActionParams contains the value of a single parameter, or a list of multiple parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....

download_bytes Method

Downloads a file from the server into an array of bytes.

Syntax

def download_bytes(remote_file: str) -> bytes: ...

Remarks

Use this method to download RemoteFile into a byte array.

download_file Method

Downloads a file from the SFTP server.

Syntax

def download_file(remote_file: str, local_file: str) -> None: ...

Remarks

Use this method to download RemoteFile into the location specified by LocalFile.

download_files Method

Downloads multiple files from the SFTP server.

Syntax

def download_files(remote_path: str, local_dir: str) -> None: ...

Remarks

RemotePath contains a file mask or regular expression by which the files are selected for download.

LocalDir specifies the local folder where the files should be saved.

execute_ssh_command Method

Sends an SSH command to the server in the middle of SFTP session.

Syntax

def execute_ssh_command(command: str) -> bytes: ...

Remarks

Use this command to send an SSH command to the server in the middle of an SFTP session. The command is executed in a secondary channel, so the SFTP connection is not affected.

This method is suitable for simple commands that do not require interaction with the user. The call returns the command output.

extension_cmd Method

Sends an extension command to the server.

Syntax

def extension_cmd(extn: str, data_buffer: bytes) -> bytes: ...

Remarks

Use this method to send an extension command to the SFTP server. Provide the extension type via the Extn parameter, and the request body via the DataBuffer parameter.

Upon completion of the command, the method returns the response as received from the server.

file_exists Method

Checks whether a file exists on the server.

Syntax

def file_exists(remote_file: str) -> bool: ...

Remarks

Use this method to check if a RemoteFile exists on the server.

get_current_dir Method

Returns the current directory on the SFTP server.

Syntax

def get_current_dir() -> str: ...

Remarks

Use this method to retrieve the current directory as stored by the class. This is a virtualized current directory, as SFTP protocol does not maintain a concept of the current directory.

get_file_size Method

Checks the size of a remote file.

Syntax

def get_file_size(remote_file: str) -> int: ...

Remarks

Returns the size of the RemoteFile.

list_dir Method

Lists the content of the current remote directory.

Syntax

def list_dir(include_files: bool, include_directories: bool) -> str: ...

Remarks

IncludeFiles specifies whether file names and symlinks should be included in the results. IncludeDirectories specifies whether directory names should be included in the result.

Upon receiving the listing, the component will report each entry in it via on_list_entry event.

make_dir Method

Creates a new directory on the server.

Syntax

def make_dir(remote_dir: str) -> None: ...

Remarks

RemoteDir specifies the name of the new directory.

rename_file Method

Renames a file.

Syntax

def rename_file(source_file: str, dest_file: str) -> None: ...

Remarks

Use this method to rename a remote file. Provide the old and the new name via SourceFile and DestFile parameters.

request_attributes Method

Requests attributes of the remote file.

Syntax

def request_attributes(remote_path: str, follow_sym_links: bool) -> str: ...

Remarks

Use this method to request attributes of a remote file. Pass the name of the file via the RemotePath parameter, and use FollowSymLinks to specify whether symbolic links should be resolved.

The method returns the list of attributes as a line of semicolon-separated entries: Size=78220;Owner=user@system;Group=none@system;Permissions=432;ATime=2020-04-28 08:21:00.295;MTime=2020-04-28 08:21:00.302;CTime=2020-04-28 08:21:00.295;AttribBits=24;LinkCount=1.

set_attributes Method

Sets the attributes upon a remote file.

Syntax

def set_attributes(remote_path: str, attributes: str) -> None: ...

Remarks

Use this method to set the attributes of a remote file.

upload_bytes Method

Uploads a byte array to the server.

Syntax

def upload_bytes(bytes: bytes, remote_file: str) -> None: ...

Remarks

Use this method to upload Bytes or its part to RemoteFile on the server.

upload_file Method

Uploads a file to the server.

Syntax

def upload_file(local_file: str, remote_file: str) -> None: ...

Remarks

Use this method to upload LocalFile to the RemoteFile location on the server.

upload_files Method

Uploads multiple files to the server.

Syntax

def upload_files(local_path: str, remote_dir: str) -> None: ...

Remarks

Use this property to upload a batch of files to the server.

LocalPath specifies a wildcard or regular expression by which the local files are picked for uploading. RemoteDir specifies the location on the server where these files should be saved.

on_auth_attempt Event

Fires when an authentication attempt is performed.

Syntax

class SFTPClientAuthAttemptEventParams(object):
  @property
  def auth_type() -> int: ...

# In class SFTPClient:
@property
def on_auth_attempt() -> Callable[[SFTPClientAuthAttemptEventParams], None]: ...
@on_auth_attempt.setter
def on_auth_attempt(event_hook: Callable[[SFTPClientAuthAttemptEventParams], None]) -> None: ...

Remarks

This event signals the start of an authentication attempt. The AuthType parameter specifies the authentication type. This event may be fired more than once if the client tries different authentication methods one after another.

Supported authentication types:


atRhosts	`0x01`	RHOSTS file authentication. Rarely used today.
atPublicKey	`0x02`	Public key (sometimes called private key) authentication
atPassword	`0x04`	Password-based authentication
atHostbased	`0x08`	Hostbased authentication
atKeyboard	`0x10`	Keyboard-interactive authentication. This is often used in place of generic password authentication.
atGssWithMic	`0x20`	GSS authentication
atGssKeyex	`0x40`	GSS authentication with key exchange
atPublicKeyAgent	`0x80`	Public key agent authentication

on_auth_failed Event

Fires if an authentication attempt fails.

Syntax

class SFTPClientAuthFailedEventParams(object):
  @property
  def auth_type() -> int: ...

# In class SFTPClient:
@property
def on_auth_failed() -> Callable[[SFTPClientAuthFailedEventParams], None]: ...
@on_auth_failed.setter
def on_auth_failed(event_hook: Callable[[SFTPClientAuthFailedEventParams], None]) -> None: ...

Remarks

This event fires if an authentication attempt fails (for example, if a bad password had been provided). AuthType parameter indicates the authentication type.

AuthFailed may be fired more than once, depending on the configured authentication parameters and the value assigned to the auth_attempts property.

This event does not necessarily lead to connection abortion, as the client may still have a chance of authenticating with a different method.

Supported authentication types:


atRhosts	`0x01`	RHOSTS file authentication. Rarely used today.
atPublicKey	`0x02`	Public key (sometimes called private key) authentication
atPassword	`0x04`	Password-based authentication
atHostbased	`0x08`	Hostbased authentication
atKeyboard	`0x10`	Keyboard-interactive authentication. This is often used in place of generic password authentication.
atGssWithMic	`0x20`	GSS authentication
atGssKeyex	`0x40`	GSS authentication with key exchange
atPublicKeyAgent	`0x80`	Public key agent authentication

on_auth_succeeded Event

Reports a successful authentication.

Syntax

class SFTPClientAuthSucceededEventParams(object):
# In class SFTPClient:
@property
def on_auth_succeeded() -> Callable[[SFTPClientAuthSucceededEventParams], None]: ...
@on_auth_succeeded.setter
def on_auth_succeeded(event_hook: Callable[[SFTPClientAuthSucceededEventParams], None]) -> None: ...

Remarks

This event marks the completion of the authentication procedure, and signifies transition to the SSH connection subprotocol.

on_banner Event

Reports the receipt of the Welcome message from the server.

Syntax

class SFTPClientBannerEventParams(object):
  @property
  def text() -> bytes: ...

  @property
  def language() -> bytes: ...

# In class SFTPClient:
@property
def on_banner() -> Callable[[SFTPClientBannerEventParams], None]: ...
@on_banner.setter
def on_banner(event_hook: Callable[[SFTPClientBannerEventParams], None]) -> None: ...

Remarks

The class fires this event when it receives a welcome message from the server. Use the Text parameter to access the encoded message.

on_disconnect Event

Reports SFTP connection closure.

Syntax

class SFTPClientDisconnectEventParams(object):
  @property
  def close_reason() -> int: ...

# In class SFTPClient:
@property
def on_disconnect() -> Callable[[SFTPClientDisconnectEventParams], None]: ...
@on_disconnect.setter
def on_disconnect(event_hook: Callable[[SFTPClientDisconnectEventParams], None]) -> None: ...

Remarks

The class fires this event to report connection closure. No more SFTP activity could be done after the disconnect.

on_error Event

Information about errors during SFTP connection.

Syntax

class SFTPClientErrorEventParams(object):
  @property
  def error_code() -> int: ...

  @property
  def description() -> str: ...

# In class SFTPClient:
@property
def on_error() -> Callable[[SFTPClientErrorEventParams], None]: ...
@on_error.setter
def on_error(event_hook: Callable[[SFTPClientErrorEventParams], None]) -> None: ...

Remarks

The event is fired in case of exceptional conditions during data transfer.

ErrorCode contains an error code and Description contains a textual description of the error. For a list of error codes please refer to SFTP.

on_external_sign Event

Handles remote or external signing initiated by the SignExternal method or other source.

Syntax

class SFTPClientExternalSignEventParams(object):
  @property
  def operation_id() -> str: ...

  @property
  def hash_algorithm() -> str: ...

  @property
  def pars() -> str: ...

  @property
  def data() -> str: ...

  @property
  def signed_data() -> str: ...
  @signed_data.setter
  def signed_data(value) -> None: ...

# In class SFTPClient:
@property
def on_external_sign() -> Callable[[SFTPClientExternalSignEventParams], None]: ...
@on_external_sign.setter
def on_external_sign(event_hook: Callable[[SFTPClientExternalSignEventParams], None]) -> None: ...

Remarks

Assign a handler to this event if you need to delegate a low-level signing operation to an external, remote, or custom signing engine. Depending on the settings, the handler will receive a hashed or unhashed value to be signed.

The event handler must pass the value of Data to the signer, obtain the signature, and pass it back to the class via the SignedData parameter.

OperationId provides a comment about the operation and its origin. It depends on the exact class being used, and may be empty. HashAlgorithm specifies the hash algorithm being used for the operation, and Pars contains algorithm-dependent parameters.

The class uses base16 (hex) encoding for the Data, SignedData, and Pars parameters. If your signing engine uses a different input and output encoding, you may need to decode and/or encode the data before and/or after the signing.

A sample MD5 hash encoded in base16: a0dee2a0382afbb09120ffa7ccd8a152 - lower case base16 A0DEE2A0382AFBB09120FFA7CCD8A152 - upper case base16

A sample event handler that uses the .NET RSACryptoServiceProvider class may look like the following: signer.OnExternalSign += (s, e) => { var cert = new X509Certificate2("cert.pfx", "", X509KeyStorageFlags.Exportable); var key = (RSACryptoServiceProvider)cert.PrivateKey; var dataToSign = e.Data.FromBase16String(); var signedData = key.SignHash(dataToSign, "2.16.840.1.101.3.4.2.1"); e.SignedData = signedData.ToBase16String(); };

on_file_operation Event

Signifies the start of a file transfer operation.

Syntax

class SFTPClientFileOperationEventParams(object):
  @property
  def operation() -> int: ...

  @property
  def remote_path() -> str: ...

  @property
  def local_path() -> str: ...

  @property
  def skip() -> bool: ...
  @skip.setter
  def skip(value) -> None: ...

  @property
  def cancel() -> bool: ...
  @cancel.setter
  def cancel(value) -> None: ...

# In class SFTPClient:
@property
def on_file_operation() -> Callable[[SFTPClientFileOperationEventParams], None]: ...
@on_file_operation.setter
def on_file_operation(event_hook: Callable[[SFTPClientFileOperationEventParams], None]) -> None: ...

Remarks

This event is fired each time the class starts an upload or download operation within a multi-file call. Operation defines the operation about to start, RemotePath specifies the name and path to the remote file, and LocalPath specifies the name and path to the local file.

If needed, set Skip to true to ignore the current file, or Cancel to abort the whole batch.

Supported operations:


csfoDownloadFile	`0`	Download file
csfoUploadFile	`1`	Upload file
csfoDeleteFile	`2`	Delete file
csfoMakeDir	`3`	Make directory

on_file_operation_result Event

Signifies the completion of a file transfer operation.

Syntax

class SFTPClientFileOperationResultEventParams(object):
  @property
  def operation() -> int: ...

  @property
  def remote_path() -> str: ...

  @property
  def local_path() -> str: ...

  @property
  def error_code() -> int: ...

  @property
  def comment() -> str: ...

  @property
  def cancel() -> bool: ...
  @cancel.setter
  def cancel(value) -> None: ...

# In class SFTPClient:
@property
def on_file_operation_result() -> Callable[[SFTPClientFileOperationResultEventParams], None]: ...
@on_file_operation_result.setter
def on_file_operation_result(event_hook: Callable[[SFTPClientFileOperationResultEventParams], None]) -> None: ...

Remarks

This event is fired each time the class completes a file transfer within a multi-file call. Operation defines the operation performed on the file, RemotePath specifies the name and path to the remote file, and LocalPath specifies the name and path to the local file.

ErrorCode and Comment return the code and textual description of the error, if it was encountered.

Set Cancel to True to cancel the multi-file operation.

Supported operations:


csfoDownloadFile	`0`	Download file
csfoUploadFile	`1`	Upload file
csfoDeleteFile	`2`	Delete file
csfoMakeDir	`3`	Make directory

on_known_key_received Event

Signals that the server has introduced itself with a known key.

Syntax

class SFTPClientKnownKeyReceivedEventParams(object):
  @property
  def algorithm() -> str: ...

  @property
  def bits() -> int: ...

  @property
  def fingerprint_sha256() -> str: ...

# In class SFTPClient:
@property
def on_known_key_received() -> Callable[[SFTPClientKnownKeyReceivedEventParams], None]: ...
@on_known_key_received.setter
def on_known_key_received(event_hook: Callable[[SFTPClientKnownKeyReceivedEventParams], None]) -> None: ...

Remarks

The class fires this event to tell the application that the server has introduced itself with a known key from trusted_keys_file.

The details of the key are provided: Algorithm and Bits specify the key algorithm and the number of bits. FingerprintSHA256 contains the key's fingerprint.

Use server_key to access more key details.

on_list_entry Event

Reports a directory listing entry to the application.

Syntax

class SFTPClientListEntryEventParams(object):
  @property
  def filename() -> str: ...

# In class SFTPClient:
@property
def on_list_entry() -> Callable[[SFTPClientListEntryEventParams], None]: ...
@on_list_entry.setter
def on_list_entry(event_hook: Callable[[SFTPClientListEntryEventParams], None]) -> None: ...

Remarks

The class fires this event to report a directory listing entry to the application. FileName contains the entry name.

Use current_list_entry to access the details of the entry.

on_notification Event

This event notifies the application about an underlying control flow event.

Syntax

class SFTPClientNotificationEventParams(object):
  @property
  def event_id() -> str: ...

  @property
  def event_param() -> str: ...

# In class SFTPClient:
@property
def on_notification() -> Callable[[SFTPClientNotificationEventParams], None]: ...
@on_notification.setter
def on_notification(event_hook: Callable[[SFTPClientNotificationEventParams], None]) -> None: ...

Remarks

The class fires this event to let the application know about some event, occurrence, or milestone in the class. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.

The unique identifier of the event is provided in the EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the class, the exact action it is performing, or the document being processed, one or both may be omitted.

on_password_change_request Event

Signals that the server requests a password change.

Syntax

class SFTPClientPasswordChangeRequestEventParams(object):
  @property
  def prompt() -> str: ...

  @property
  def new_password() -> str: ...
  @new_password.setter
  def new_password(value) -> None: ...

  @property
  def cancel() -> bool: ...
  @cancel.setter
  def cancel(value) -> None: ...

# In class SFTPClient:
@property
def on_password_change_request() -> Callable[[SFTPClientPasswordChangeRequestEventParams], None]: ...
@on_password_change_request.setter
def on_password_change_request(event_hook: Callable[[SFTPClientPasswordChangeRequestEventParams], None]) -> None: ...

Remarks

The class fires this event to pass the password change request from the server to the application. This event is fired during the SSH handshake.

on_private_key_needed Event

Asks the application for the client's private key.

Syntax

class SFTPClientPrivateKeyNeededEventParams(object):
  @property
  def skip() -> bool: ...
  @skip.setter
  def skip(value) -> None: ...

# In class SFTPClient:
@property
def on_private_key_needed() -> Callable[[SFTPClientPrivateKeyNeededEventParams], None]: ...
@on_private_key_needed.setter
def on_private_key_needed(event_hook: Callable[[SFTPClientPrivateKeyNeededEventParams], None]) -> None: ...

Remarks

The class fires this event if the public key provided in key was accepted by the server, but no private key is available for it.

Use this event handler to attach the private key to your key. The component will pick the key up and continue the authentication.

on_progress Event

Fires periodically during the data transfer.

Syntax

class SFTPClientProgressEventParams(object):
  @property
  def total() -> int: ...

  @property
  def current() -> int: ...

  @property
  def cancel() -> bool: ...
  @cancel.setter
  def cancel(value) -> None: ...

# In class SFTPClient:
@property
def on_progress() -> Callable[[SFTPClientProgressEventParams], None]: ...
@on_progress.setter
def on_progress(event_hook: Callable[[SFTPClientProgressEventParams], None]) -> None: ...

Remarks

Use this event to check the progress of an upload or download operation. Total indicates the total number of bytes to be transferred; Current specifies how much data has been transferred so far, and Cancel gives you a chance to cancel the operation.

on_unknown_key_received Event

Signals that the server has introduced itself with an unknown key.

Syntax

class SFTPClientUnknownKeyReceivedEventParams(object):
  @property
  def algorithm() -> str: ...

  @property
  def bits() -> int: ...

  @property
  def fingerprint_sha256() -> str: ...

  @property
  def action() -> int: ...
  @action.setter
  def action(value) -> None: ...

# In class SFTPClient:
@property
def on_unknown_key_received() -> Callable[[SFTPClientUnknownKeyReceivedEventParams], None]: ...
@on_unknown_key_received.setter
def on_unknown_key_received(event_hook: Callable[[SFTPClientUnknownKeyReceivedEventParams], None]) -> None: ...

Remarks

The class fires this event to tell the application that the server has introduced itself with a key not present in trusted_keys_file.

The details of the key are provided: Algorithm and Bits specify the key algorithm and the number of bits. FingerprintSHA256 contains the key's fingerprint.

In this event handler, you need to make a decision whether to proceed with the connection. Use Action to tell the class what it should do with the key:


catAcceptOnce	`1`	Accept the key for the current session only.
catAcceptPermanently	`2`	Accept the key for the current session and store the key to the trusted keys list.
catReject	`3`	Reject the key and close the connection.

Note that accepting an unknown and unchecked key may be risky.

SFTPClient Config Settings

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

SFTPClient Config Settings

AdjustFileTimes: Whether file times should be adjusted after upload/download.

If this property value is True, file times (creation, access and last modification times) will be adjusted after upload/download operation.

ASCIIMode: Whether ASCII transfer mode is used.

When this property is True, ASCII (text) transfer mode is used, otherwise the transfer is performed in binary mode.

AvailableSpace: Returns details of server disk space availability. This protocol extension must be supported by the server for this request to work.

This config property returns the details of the server disk space. The information is provided in the form of semicolon-separated entries: BytesOnDevice, UnusedBytesOnDevice, BytesAvailableToUser, UnusedBytesAvailableToUser, BytesPerAllocationUnit. You can use this property without parameters, or provide a specific mounting point in brackets: AvailableSpace(./path).

CaseConversion: Whether case conversion must be applied to file names as they are downloaded.

You can choose to: convert file names to upper case, convert file names to lower case, or to keep them as they are.

CaseSensitive: Specifies if file paths are case-sensitive.

Set this property to True if all file names, paths and file masks should be case-sensitive.

CopyMode: Defines what to do with each successfully copied file.

You could choose to: simply copy the file, delete each file's origin right after that file has been copied, or delete all original files only after all files have been copied.

DefOutboundBlockSize: The default outbound block size.

Use this property to configure the outbound data block size.

DisablePacketFragmentation: Enables or disables SSH packet fragmentation.

Use this property to enable or disable SSH packet fragmentation. This is one of the settings that is worth a look if encountering unexplained transfer issues.

ErrorOrigin: Specifies whether the error is local or remote.

Use this property to check where the error took place.

ErrorSeverity: Specifies whether the error is fatal.

Use this property to check whether the error is fatal or not.

FileHash: Returns the hash of the specified file. This protocol extension must be supported by the server for this request to work.

Use this property to request the hash of a remote file. Pass the file name in brackets: FileHash(./path/file.ext). You can adjust the hash algorithm using the HashAlgorithm configuration setting.

HashAlgorithm: The hash algorithm to use for the protocol operations.

Specifies the hash algorithm to use for file protocol operations, such as FileHash.

HomeDir: Returns a user's home directory. This protocol extension must be supported by the server for this request to work.

Use this property to request a specific user's home directory on the server. Provide the username in brackets: HomeDir(user2).

IncomingSpeedLimit: Specifies incoming speed limit.

Use this property to limit the maximum number of bytes per second that client may receive. The value of 0 (zero) means "no limitation".

KeepAlivePeriod: The inactivity period after which a keep-alive signal will be sent.

Use this property to specify tunnel inactivity period (in milliseconds) after which a keep-alive signal will be sent. The default value is 0 (no keep-alive signals).

LocalCharset: Charset used on the client machine.

This property specifies the charset used on the local client computer.

LocalNewLineConvention: A character string for the end of line (EOL) indication on the local machine.

This property contains a character string for the end of line (EOL) indication on the local machine.

Mode: The file open mode to use.

This property allows to provide a custom file upload mode.

NewLineConvention: A character string for the end of line (EOL) indication on the server.

This property contains a character string for the end of line (EOL) indication used by the server. Usually its value is one of: 0x0d, 0x0d0x0a, 0x0a0x0d, or 0x0a, but it can differ for some servers.

OutgoingSpeedLimit: Specifies incoming speed limit.

Use this property to limit the maximum number of bytes per second that client may send. The value of 0 (zero) means "no limitation".

PreserveExistingFileTimes: Whether original file times should be restored upon transfer.

If the destination file exists and PreserveExistingFileTimes option is enabled, the class will remember the file's times before transfer, and restore them after the file has been transferred. The default value is False.

Recursive: Whether subdirectories should also be scanned for matching files.

Set this property to True to indicate that subdirectories should also be scanned for matching files

RedirectStdErr: Whether to redirect output to StdErr.

If this property is True, all output will be redirected to StdErr.

RemoteCharset: Charset used on the server.

This property specifies the charset used on the server.

SFTPBufferSize: The size of internal buffer used for data transfer.

Use this property to control the size of the internal buffers used for data transfer.

SFTPServerExecutableLocations: Location of the SFTP server executable.

Specifies the location of the SFTP server executable.

StatVFS: Returns VFS details. This protocol extension must be supported by the server for this request to work.

This config property returns the VFS details of the server file system. The information is provided in the form of semicolon-separated entries. You can use this property without parameters, or provide a specific mounting point in brackets: StatVFS(./).

StdErrData: The buffer for writing StdErr data.

This property represents a buffer where StdErr data is written by the class.

TempFolder: Returns the temporary directory offered by the server. This protocol extension must be supported by the server for this request to work.

Use this property to request a path to the temporary directory maintained by the server.

TempPath: Location where the temporary files are stored.

This setting specifies an absolute path to the location on disk where temporary files are stored.

TreatZeroSizeAsUndefined: Whether zero size returned by STAT should be considered as undefined.

This property specifies if the size of zero returned by the STAT command for a particular file should be considered as undefined. It makes sense to set this property to True, because some operating systems (e.g. Unix-based) return zero size for the files of certain type. For instance, most of the files contained in the /proc directory are reported as 0-sized, while actually not being empty.

UseStrictKeyExchange: Specifies how strict key exchange is supported.

This setting controls whether strict key exchange (strict kex) is enabled to mitigate the Terrapin attack. When enabled, the class will indicate support for strict key exchange by automatically including the pseudo-algorithm kex-strict-c-v00@openssh.com for client classes and kex-strict-s-v00@openssh.com for server classes in the list of supported key exchange algorithms.

Since both client and server must implement strict key exchange to effectively mitigate the Terrapin attack, the class provides options to further control the behavior in different scenarios. Possible values for this setting are:


`0`	Disabled. Strict key exchange is not supported in the class.
`1` (default)	Enabled, but not enforced. This setting enables strict key exchange, but if the remote host does not support strict key exchange the connection is still allowed to continue.
`2`	Enabled, but reject affected algorithms if the remote host does not support strict key exchange. If the remote host supports strict key exchange all algorithms may be used. If the remote host does not support strict key exchange the connection will only continue if the selected encryption and MAC algorithms are not affected by the Terrapin attack.
`3`	Required. If the remote host does not support strict key exchange the connection will fail.

UseTruncateFlagOnUpload: whether to use the 'truncate' flag on file upload.

If this property is True, the existing files are opened truncated on upload, otherwise new files are created. The default value is True.

UseUTF8OnV3: Whether to apply UTF-8 conversion for SFTP protocol versions 3 and lower.

If this property is True, UTF-8 encoding will be applied to file names for SFTP protocol versions 3 and lower.

Base Config Settings

CheckKeyIntegrityBeforeUse: Enables or disable private key integrity check before use.

This global property enables or disables private key material check before each signing operation. This slows down performance a bit, but prevents a selection of attacks on RSA keys where keys with unknown origins are used.

You can switch this property off to improve performance if your project only uses known, good private keys.

CookieCaching: Specifies whether a cookie cache should be used for HTTP(S) transports.

Set this property to enable or disable cookies caching for the class.

Supported values are:


off		No caching (default)
local		Local caching
global		Global caching

Cookies: Gets or sets local cookies for the class.

Use this property to get cookies from the internal cookie storage of the class and/or restore them back between application sessions.

DefDeriveKeyIterations: Specifies the default key derivation algorithm iteration count.

This global property sets the default number of iterations for all supported key derivation algorithms. Note that you can provide the required number of iterations by using properties of the relevant key generation component; this global setting is used in scenarios where specific iteration count is not or cannot be provided.

EnableClientSideSSLFFDHE: Enables or disables finite field DHE key exchange support in TLS clients.

This global property enables or disables support for finite field DHE key exchange methods in TLS clients. FF DHE is a slower algorithm if compared to EC DHE; enabling it may result in slower connections.

This setting only applies to sessions negotiated with TLS version 1.3.

GlobalCookies: Gets or sets global cookies for all the HTTP transports.

Use this property to get cookies from the GLOBAL cookie storage or restore them back between application sessions. These cookies will be used by all the classes that have its CookieCaching property set to "global".

HttpUserAgent: Specifies the user agent name to be used by all HTTP clients.

This global setting defines the User-Agent field of the HTTP request provides information about the software that initiates the request. This value will be used by all the HTTP clients including the ones used internally in other classes.

LogDestination: Specifies the debug log destination.

Contains a comma-separated list of values that specifies where debug log should be dumped.

Supported values are:


file		File
console		Console
systemlog		System Log (supported for Android only)
debugger		Debugger (supported for VCL for Windows and .Net)

LogDetails: Specifies the debug log details to dump.

Contains a comma-separated list of values that specifies which debug log details to dump.

Supported values are:


time		Current time
level		Level
package		Package name
module		Module name
class		Class name
method		Method name
threadid		Thread Id
contenttype		Content type
content		Content
all		All details

LogFile: Specifies the debug log filename.

Use this property to provide a path to the log file.

LogFilters: Specifies the debug log filters.

Contains a comma-separated list of value pairs ("name:value") that describe filters.

Supported filter names are:


exclude-package		Exclude a package specified in the value
exclude-module		Exclude a module specified in the value
exclude-class		Exclude a class specified in the value
exclude-method		Exclude a method specified in the value
include-package		Include a package specified in the value
include-module		Include a module specified in the value
include-class		Include a class specified in the value
include-method		Include a method specified in the value

LogFlushMode: Specifies the log flush mode.

Use this property to set the log flush mode. The following values are defined:


none		No flush (caching only)
immediate		Immediate flush (real-time logging)
maxcount		Flush cached entries upon reaching LogMaxEventCount entries in the cache.

LogLevel: Specifies the debug log level.

Use this property to provide the desired debug log level.

Supported values are:


none		None (by default)
fatal		Severe errors that cause premature termination.
error		Other runtime errors or unexpected conditions.
warning		Use of deprecated APIs, poor use of API, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".
info		Interesting runtime events (startup/shutdown).
debug		Detailed information on flow of through the system.
trace		More detailed information.

LogMaxEventCount: Specifies the maximum number of events to cache before further action is taken.

Use this property to specify the log event number threshold. This threshold may have different effects, depending on the rotation setting and/or the flush mode.

The default value of this setting is 100.

LogRotationMode: Specifies the log rotation mode.

Use this property to set the log rotation mode. The following values are defined:


none		No rotation
deleteolder		Delete older entries from the cache upon reaching LogMaxEventCount
keepolder		Keep older entries in the cache upon reaching LogMaxEventCount (newer entries are discarded)

MaxASN1BufferLength: Specifies the maximal allowed length for ASN.1 primitive tag data.

This global property limits the maximal allowed length for ASN.1 tag data for non-content-carrying structures, such as certificates, CRLs, or timestamps. It does not affect structures that can carry content, such as CMS/CAdES messages. This is a security property aiming at preventing DoS attacks.

MaxASN1TreeDepth: Specifies the maximal depth for processed ASN.1 trees.

This global property limits the maximal depth of ASN.1 trees that the component can handle without throwing an error. This is a security property aiming at preventing DoS attacks.

OCSPHashAlgorithm: Specifies the hash algorithm to be used to identify certificates in OCSP requests.

This global setting defines the hash algorithm to use in OCSP requests during chain validation. Some OCSP responders can only use older algorithms, in which case setting this property to SHA1 may be helpful.

StaticDNS: Specifies whether static DNS rules should be used.

Set this property to enable or disable static DNS rules for the class. Works only if UseOwnDNSResolver is set to true.

Supported values are:


none		No static DNS rules (default)
local		Local static DNS rules
global		Global static DNS rules

StaticIPAddress[domain]: Gets or sets an IP address for the specified domain name.

Use this property to get or set an IP address for the specified domain name in the internal (of the class) or global DNS rules storage depending on the StaticDNS value. The type of the IP address (IPv4 or IPv6) is determined automatically. If both addresses are available, they are devided by the | (pipe) character.

StaticIPAddresses: Gets or sets all the static DNS rules.

Use this property to get static DNS rules from the current rules storage or restore them back between application sessions. If StaticDNS of the class is set to "local", the property returns/restores the rules from/to the internal storage of the class. If StaticDNS of the class is set to "global", the property returns/restores the rules from/to the GLOBAL storage. The rules list is returned and accepted in JSON format.

Tag: Allows to store any custom data.

Use this config property to store any custom data.

TLSSessionGroup: Specifies the group name of TLS sessions to be used for session resumption.

Use this property to limit the search of chached TLS sessions to the specified group. Sessions from other groups will be ignored. By default, all sessions are cached with an empty group name and available to all the classes.

TLSSessionLifetime: Specifies lifetime in seconds of the cached TLS session.

Use this property to specify how much time the TLS session should be kept in the session cache. After this time, the session expires and will be automatically removed from the cache. Default value is 300 seconds (5 minutes).

TLSSessionPurgeInterval: Specifies how often the session cache should remove the expired TLS sessions.

Use this property to specify the time interval of purging the expired TLS sessions from the session cache. Default value is 60 seconds (1 minute).

UseOwnDNSResolver: Specifies whether the client components should use own DNS resolver.

Set this global property to false to force all the client components to use the DNS resolver provided by the target OS instead of using own one.

UseSharedSystemStorages: Specifies whether the validation engine should use a global per-process copy of the system certificate stores.

Set this global property to false to make each validation run use its own copy of system certificate stores.

UseSystemOAEPAndPSS: Enforces or disables the use of system-driven RSA OAEP and PSS computations.

This global setting defines who is responsible for performing RSA-OAEP and RSA-PSS computations where the private key is stored in a Windows system store and is exportable. If set to true, SBB will delegate the computations to Windows via a CryptoAPI call. Otherwise, it will export the key material and perform the computations using its own OAEP/PSS implementation.

This setting only applies to certificates originating from a Windows system store.

UseSystemRandom: Enables or disables the use of the OS PRNG.

Use this global property to enable or disable the use of operating system-driven pseudorandom number generation.

SFTPClient Errors


	1048577 Invalid parameter value (`SB_ERROR_INVALID_PARAMETER`)
	1048578 Class is configured incorrectly (`SB_ERROR_INVALID_SETUP`)
	1048579 Operation cannot be executed in the current state (`SB_ERROR_INVALID_STATE`)
	1048580 Attempt to set an invalid value to a property (`SB_ERROR_INVALID_VALUE`)
	1048581 Certificate does not have its private key loaded (`SB_ERROR_NO_PRIVATE_KEY`)
	1048581 Cancelled by the user (`SB_ERROR_CANCELLED_BY_USER`)
	31457281 Unsupported file operation (`SB_ERROR_SFTP_UNSUPPORTED_FILEOPERATION`)