PGPKeyring Class

Properties Methods Events Config Settings Errors

The PGPKeyring class manages PGP keyring files.

Syntax

class secureblackbox.PGPKeyring

Remarks

Keyring keep the details of local PGP key collections. A typical keyring consists of two parts, with the first part containing the public keys of other people, and the second part containing the secret keys of the keyring owner (i.e. your secret keys).

PGPKeyring can work with RSA, Elgamal (DH), ECDSA, DSS, and EdDSA keypairs with or without subkeys. Public and private PGP keys of versions 2, 3, 4, 5, and 6 are supported.

Depending on your task at hand, you may need to only use the public part, or both. However, there is a couple of catches here. Some PGP implementations operate with just one keyring file that contains both the public and secret keys. The others sometimes mess-up the keys, with secret key accidentally ending up in the public part of the keyring, or the other way round.

Our suggestion therefore is to load all the keyring files that you have into PGPKeyring using consecutive import_from_file (or import_bytes) calls, and then look for the keys that match the required parameters in the keys collection. That would provide fault-tolerant and smooth experience to your customers. PGPKeyring keyring = new PGPKeyring(); keyring.ImportFromFile("pubring.pkr"); keyring.ImportFromFile("secring.skr");

Once you have loaded your keyring files into the keyring, you can perform the following operations on the keys:

Iterate over the whole set of keys using keys collection.
Add new keys to the keyring using methods such as import_bytes, import_pinned, or import_from_file.
Save the updated keyring using export_bytes or export_to_file methods.
Use select to filter keys by certain criteria (public/private, KeyID) into a separate selected_keys list.
Remove keys from the keyring.
Assign the keyring keys to properties like PGPWriter.SigningKeys to use them for encryption or signing.

Note: PGPKeyring provides access to keyring contents but does not let you edit or generate keys. To achieve these, please see PGPKeyManager.

Once you have completed your work with PGPKeyring, dispose of the object or call reset to clean up all the key information from memory.

Property List

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


key_count	The number of records in the Key arrays.
key_bits_in_key	Indicates the key length in bits.
key_can_encrypt	Returns True if this key can be used for encryption.
key_can_sign	Returns True if this key can be used for signing.
key_curve	Indicates the elliptic curve associated with a EC key.
key_enabled	Enables or disables this key for use in encryption or signing operation.
key_encryption_algorithm	Indicates the symmetric algorithm used to encrypt the secret key.
key_handle	Allows to get or set a 'handle', a unique identifier of the underlying property object.
key_is_public	Returns True if this key is a public key, and False otherwise.
key_is_secret	Returns True if this key is a secret key, and False otherwise.
key_is_subkey	Returns True if this key is a subkey of another key, and False otherwise.
key_key_fp	The 20-byte fingerprint (hash value) of this key.
key_key_id	Contains a 8-byte key identifier.
key_passphrase	The key protection password.
key_passphrase_valid	Use this property to check whether the specified Passphrase is valid and can be used to unlock the secret key.
key_primary_key_id	If this key is a subkey ( IsSubkey returns True), this property contains the identifier of the subkey's primary key.
key_protection	Specifies the level of protection applied to the secret key.
key_public_key_algorithm	Specifies the asymmetric algorithm of the key.
key_q_bits	The length of the DSA Q (legitimate range: 160-512).
key_timestamp	Use this property to check the time the key was generated.
key_username	Specifies the name of the user bound to this key.
key_valid_to	Provide accurate expiration moment indication.
key_version	Indicates the key version.
pinned_key_handle	Allows to get or set a 'handle', a unique identifier of the underlying property object.
selected_key_count	The number of records in the SelectedKey arrays.
selected_key_bits_in_key	Indicates the key length in bits.
selected_key_can_encrypt	Returns True if this key can be used for encryption.
selected_key_can_sign	Returns True if this key can be used for signing.
selected_key_curve	Indicates the elliptic curve associated with a EC key.
selected_key_enabled	Enables or disables this key for use in encryption or signing operation.
selected_key_encryption_algorithm	Indicates the symmetric algorithm used to encrypt the secret key.
selected_key_handle	Allows to get or set a 'handle', a unique identifier of the underlying property object.
selected_key_is_public	Returns True if this key is a public key, and False otherwise.
selected_key_is_secret	Returns True if this key is a secret key, and False otherwise.
selected_key_is_subkey	Returns True if this key is a subkey of another key, and False otherwise.
selected_key_key_fp	The 20-byte fingerprint (hash value) of this key.
selected_key_key_id	Contains a 8-byte key identifier.
selected_key_passphrase	The key protection password.
selected_key_passphrase_valid	Use this property to check whether the specified Passphrase is valid and can be used to unlock the secret key.
selected_key_primary_key_id	If this key is a subkey ( IsSubkey returns True), this property contains the identifier of the subkey's primary key.
selected_key_protection	Specifies the level of protection applied to the secret key.
selected_key_public_key_algorithm	Specifies the asymmetric algorithm of the key.
selected_key_q_bits	The length of the DSA Q (legitimate range: 160-512).
selected_key_timestamp	Use this property to check the time the key was generated.
selected_key_username	Specifies the name of the user bound to this key.
selected_key_valid_to	Provide accurate expiration moment indication.
selected_key_version	Indicates the key version.

Method List

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


config	Sets or retrieves a configuration setting.
do_action	Performs an additional action.
export_bytes	Exports the keyring to a byte array.
export_to_file	Exports the keyring to disk.
import_bytes	Loads a key from a byte array.
import_from_file	Loads a key from a file.
import_pinned	Imports a pinned secret key to the keyring.
remove	Removes the specified key from the keyring.
remove_by_id	Removes key by its ID.
reset	Creates a new empty keyring.
select	Filters a selection of keys from the keyring using a template.
update_pinned	Update a pinned key in the keyring.

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_error	Information about errors during PGP key management.
on_notification	This event notifies the application about an underlying control flow event.

Config Settings

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


Armor	Enables or disables ASCII armouring.
ArmorBoundary	Specifies the armour boundary/title.
ArmorHeaders	Specifies armour headers.
UseLongKeyIDs	Enables long (8-byte) KeyID representation.
ASN1UseGlobalTagCache	Controls whether ASN.1 module should use a global object cache.
AssignSystemSmartCardPins	Specifies whether CSP-level PINs should be assigned to CNG keys.
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.
DNSLocalSuffix	The suffix to assign for TLD names.
EnableClientSideSSLFFDHE	Enables or disables finite field DHE key exchange support in TLS clients.
GlobalCookies	Gets or sets global cookies for all the HTTP transports.
HardwareCryptoUsePolicy	The hardware crypto usage policy.
HttpUserAgent	Specifies the user agent name to be used by all HTTP clients.
HttpVersion	The HTTP version to use in any inner HTTP client classes created.
IgnoreExpiredMSCTLSigningCert	Whether to tolerate the expired Windows Update signing certificate.
ListDelimiter	The delimiter character for multi-element lists.
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.
OldClientSideRSAFallback	Specifies whether the SSH client should use a SHA1 fallback.
PKICache	Specifies which PKI elements (certificates, CRLs, OCSP responses) should be cached.
PKICachePath	Specifies the file system path where cached PKI data is stored.
ProductVersion	Returns the version of the SecureBlackbox library.
ServerSSLDHKeyLength	Sets the size of the TLS DHE key exchange group.
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.
UseCRLObjectCaching	Specifies whether reuse of loaded CRL objects is enabled.
UseInternalRandom	Switches between SecureBlackbox-own and platform PRNGs.
UseLegacyAdESValidation	Enables legacy AdES validation mode.
UseOCSPResponseObjectCaching	Specifies whether reuse of loaded OCSP response objects is enabled.
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.
UseSystemNativeSizeCalculation	An internal CryptoAPI access tweak.
UseSystemOAEPAndPSS	Enforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandom	Enables or disables the use of the OS PRNG.
XMLRDNDescriptorName[OID]	Defines an OID mapping to descriptor names for the certificate's IssuerRDN or SubjectRDN.
XMLRDNDescriptorPriority[OID]	Specifies the priority of descriptor names associated with a specific OID.
XMLRDNDescriptorReverseOrder	Specifies whether to reverse the order of descriptors in RDN.
XMLRDNDescriptorSeparator	Specifies the separator used between descriptors in RDN.

key_count Property

The number of records in the Key arrays.

Syntax

def get_key_count() -> int: ...

key_count = property(get_key_count, None)

Default Value

Remarks

This property controls the size of the following arrays:

key_bits_in_key
key_can_encrypt
key_can_sign
key_curve
key_enabled
key_encryption_algorithm
key_handle
key_is_public
key_is_secret
key_is_subkey
key_key_fp
key_key_id
key_passphrase
key_passphrase_valid
key_primary_key_id
key_protection
key_public_key_algorithm
key_q_bits
key_timestamp
key_username
key_valid_to
key_version

The array indices start at 0 and end at key_count - 1.

This property is read-only.

key_bits_in_key Property

Indicates the key length in bits.

Syntax

def get_key_bits_in_key(key_index: int) -> int: ...

Default Value

2048

Remarks

Indicates the key length in bits.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_can_encrypt Property

Returns True if this key can be used for encryption.

Syntax

def get_key_can_encrypt(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key can be used for encryption.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_can_sign Property

Returns True if this key can be used for signing.

Syntax

def get_key_can_sign(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key can be used for signing.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_curve Property

Indicates the elliptic curve associated with a EC key.

Syntax

def get_key_curve(key_index: int) -> str: ...

Default Value

Remarks

Indicates the elliptic curve associated with a EC key.

Supported values:


SB_PGP_CURVE_P256	`P256`
SB_PGP_CURVE_P384	`P384`
SB_PGP_CURVE_P521	`P521`
SB_PGP_CURVE_ED25519	`ED25519`
SB_PGP_CURVE_CURVE25519	`CURVE25519`
SB_PGP_CURVE_BRAINPOOLP256R1	`BRAINPOOLP256`
SB_PGP_CURVE_BRAINPOOLP512R1	`BRAINPOOLP512`

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_enabled Property

Enables or disables this key for use in encryption or signing operation.

Syntax

def get_key_enabled(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Enables or disables this key for use in encryption or signing operation.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_encryption_algorithm Property

Indicates the symmetric algorithm used to encrypt the secret key.

Syntax

def get_key_encryption_algorithm(key_index: int) -> str: ...

Default Value

"AES128"

Remarks

Indicates the symmetric algorithm used to encrypt the secret key.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

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(key_index: int) -> int: ...

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());

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_is_public Property

Returns True if this key is a public key, and False otherwise.

Syntax

def get_key_is_public(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key is a public key, and False otherwise.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_is_secret Property

Returns True if this key is a secret key, and False otherwise.

Syntax

def get_key_is_secret(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key is a secret key, and False otherwise.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_is_subkey Property

Returns True if this key is a subkey of another key, and False otherwise.

Syntax

def get_key_is_subkey(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key is a subkey of another key, and False otherwise.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_key_fp Property

The 20-byte fingerprint (hash value) of this key.

Syntax

def get_key_key_fp(key_index: int) -> str: ...

Default Value

Remarks

The 20-byte fingerprint (hash value) of this key.

KeyFP could be used to distinguish two keys with the same KeyID.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_key_id Property

Contains a 8-byte key identifier.

Syntax

def get_key_key_id(key_index: int) -> str: ...

Default Value

Remarks

Contains a 8-byte key identifier.

It is quite rare that IDs of two keys collide. If that happens, their fingerprints (KeyFP) can be used for distinguish between the keys. Please note that many PGP implementations show only 4 lowest bytes of the KeyID to the user.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_passphrase Property

The key protection password.

Syntax

def get_key_passphrase(key_index: int) -> str: ...

Default Value

Remarks

The key protection password.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_passphrase_valid Property

Use this property to check whether the specified Passphrase is valid and can be used to unlock the secret key.

Syntax

def get_key_passphrase_valid(key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Use this property to check whether the specified key_passphrase is valid and can be used to unlock the secret key.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_primary_key_id Property

If this key is a subkey ( IsSubkey returns True), this property contains the identifier of the subkey's primary key.

Syntax

def get_key_primary_key_id(key_index: int) -> str: ...

Default Value

Remarks

If this key is a subkey (key_is_subkey returns True), this property contains the identifier of the subkey's primary key.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_protection Property

Specifies the level of protection applied to the secret key.

Syntax

def get_key_protection(key_index: int) -> int: ...

Default Value

Remarks

Specifies the level of protection applied to the secret key.

Allowed values:


pptNone	`0`	Key is not encrypted
pptLow	`1`	Only the password hash is used to derive the secret key
pptNormal	`2`	Password hash with salt is used to derive the secret key
pptHigh	`3`	Hash from multiple passwords and salt are used for key derivation

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_public_key_algorithm Property

Specifies the asymmetric algorithm of the key.

Syntax

def get_key_public_key_algorithm(key_index: int) -> str: ...

Default Value

Remarks

Specifies the asymmetric algorithm of the key.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_q_bits Property

The length of the DSA Q (legitimate range: 160-512).

Syntax

def get_key_q_bits(key_index: int) -> int: ...

Default Value

Remarks

The length of the DSA Q (legitimate range: 160-512).

This parameter corresponds to the hash algorithm used with the key. For example, if the value of Q is 256, SHA-256 will be used.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_timestamp Property

Use this property to check the time the key was generated.

Syntax

def get_key_timestamp(key_index: int) -> str: ...

Default Value

Remarks

Use this property to check the time the key was generated. The date and time are stored and retrieved in Universal Coordinate Time (UTC).

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_username Property

Specifies the name of the user bound to this key.

Syntax

def get_key_username(key_index: int) -> str: ...

Default Value

Remarks

Specifies the name of the user bound to this key.

The PGP username is typically represented with a full name and an email address, but generally can be any non-empty string.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_valid_to Property

Provide accurate expiration moment indication.

Syntax

def get_key_valid_to(key_index: int) -> str: ...

Default Value

"0"

Remarks

Provide accurate expiration moment indication. This is different to expires property which only contains expiration time in days in old keys.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

key_version Property

Indicates the key version.

Syntax

def get_key_version(key_index: int) -> int: ...

Default Value

Remarks

Indicates the key version.

The key version refers to the version of the public-key packet format as defined in RFC 4880.

Only four versions are currently allowed here: 3, 4, 5 and 6. It is recommended that all new keys are created with version of 6.

The key_index parameter specifies the index of the item in the array. The size of the array is controlled by the key_count property.

This property is read-only.

pinned_key_handle Property

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

Syntax

def get_pinned_key_handle() -> int: ...
def set_pinned_key_handle(value: int) -> None: ...

pinned_key_handle = property(get_pinned_key_handle, set_pinned_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.

selected_key_count Property

The number of records in the SelectedKey arrays.

Syntax

def get_selected_key_count() -> int: ...

selected_key_count = property(get_selected_key_count, None)

Default Value

Remarks

This property controls the size of the following arrays:

selected_key_bits_in_key
selected_key_can_encrypt
selected_key_can_sign
selected_key_curve
selected_key_enabled
selected_key_encryption_algorithm
selected_key_handle
selected_key_is_public
selected_key_is_secret
selected_key_is_subkey
selected_key_key_fp
selected_key_key_id
selected_key_passphrase
selected_key_passphrase_valid
selected_key_primary_key_id
selected_key_protection
selected_key_public_key_algorithm
selected_key_q_bits
selected_key_timestamp
selected_key_username
selected_key_valid_to
selected_key_version

The array indices start at 0 and end at selected_key_count - 1.

This property is read-only.

selected_key_bits_in_key Property

Indicates the key length in bits.

Syntax

def get_selected_key_bits_in_key(selected_key_index: int) -> int: ...

Default Value

2048

Remarks

Indicates the key length in bits.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_can_encrypt Property

Returns True if this key can be used for encryption.

Syntax

def get_selected_key_can_encrypt(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key can be used for encryption.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_can_sign Property

Returns True if this key can be used for signing.

Syntax

def get_selected_key_can_sign(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key can be used for signing.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_curve Property

Indicates the elliptic curve associated with a EC key.

Syntax

def get_selected_key_curve(selected_key_index: int) -> str: ...

Default Value

Remarks

Indicates the elliptic curve associated with a EC key.

Supported values:


SB_PGP_CURVE_P256	`P256`
SB_PGP_CURVE_P384	`P384`
SB_PGP_CURVE_P521	`P521`
SB_PGP_CURVE_ED25519	`ED25519`
SB_PGP_CURVE_CURVE25519	`CURVE25519`
SB_PGP_CURVE_BRAINPOOLP256R1	`BRAINPOOLP256`
SB_PGP_CURVE_BRAINPOOLP512R1	`BRAINPOOLP512`

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_enabled Property

Enables or disables this key for use in encryption or signing operation.

Syntax

def get_selected_key_enabled(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Enables or disables this key for use in encryption or signing operation.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_encryption_algorithm Property

Indicates the symmetric algorithm used to encrypt the secret key.

Syntax

def get_selected_key_encryption_algorithm(selected_key_index: int) -> str: ...

Default Value

"AES128"

Remarks

Indicates the symmetric algorithm used to encrypt the secret key.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_handle Property

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

Syntax

def get_selected_key_handle(selected_key_index: int) -> int: ...

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.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_is_public Property

Returns True if this key is a public key, and False otherwise.

Syntax

def get_selected_key_is_public(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key is a public key, and False otherwise.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_is_secret Property

Returns True if this key is a secret key, and False otherwise.

Syntax

def get_selected_key_is_secret(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key is a secret key, and False otherwise.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_is_subkey Property

Returns True if this key is a subkey of another key, and False otherwise.

Syntax

def get_selected_key_is_subkey(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Returns True if this key is a subkey of another key, and False otherwise.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_key_fp Property

The 20-byte fingerprint (hash value) of this key.

Syntax

def get_selected_key_key_fp(selected_key_index: int) -> str: ...

Default Value

Remarks

The 20-byte fingerprint (hash value) of this key.

KeyFP could be used to distinguish two keys with the same KeyID.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_key_id Property

Contains a 8-byte key identifier.

Syntax

def get_selected_key_key_id(selected_key_index: int) -> str: ...

Default Value

Remarks

Contains a 8-byte key identifier.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_passphrase Property

The key protection password.

Syntax

def get_selected_key_passphrase(selected_key_index: int) -> str: ...

Default Value

Remarks

The key protection password.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_passphrase_valid Property

Use this property to check whether the specified Passphrase is valid and can be used to unlock the secret key.

Syntax

def get_selected_key_passphrase_valid(selected_key_index: int) -> bool: ...

Default Value

FALSE

Remarks

Use this property to check whether the specified selected_key_passphrase is valid and can be used to unlock the secret key.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_primary_key_id Property

If this key is a subkey ( IsSubkey returns True), this property contains the identifier of the subkey's primary key.

Syntax

def get_selected_key_primary_key_id(selected_key_index: int) -> str: ...

Default Value

Remarks

If this key is a subkey (selected_key_is_subkey returns True), this property contains the identifier of the subkey's primary key.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_protection Property

Specifies the level of protection applied to the secret key.

Syntax

def get_selected_key_protection(selected_key_index: int) -> int: ...

Default Value

Remarks

Specifies the level of protection applied to the secret key.

Allowed values:


pptNone	`0`	Key is not encrypted
pptLow	`1`	Only the password hash is used to derive the secret key
pptNormal	`2`	Password hash with salt is used to derive the secret key
pptHigh	`3`	Hash from multiple passwords and salt are used for key derivation

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_public_key_algorithm Property

Specifies the asymmetric algorithm of the key.

Syntax

def get_selected_key_public_key_algorithm(selected_key_index: int) -> str: ...

Default Value

Remarks

Specifies the asymmetric algorithm of the key.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_q_bits Property

The length of the DSA Q (legitimate range: 160-512).

Syntax

def get_selected_key_q_bits(selected_key_index: int) -> int: ...

Default Value

Remarks

The length of the DSA Q (legitimate range: 160-512).

This parameter corresponds to the hash algorithm used with the key. For example, if the value of Q is 256, SHA-256 will be used.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_timestamp Property

Use this property to check the time the key was generated.

Syntax

def get_selected_key_timestamp(selected_key_index: int) -> str: ...

Default Value

Remarks

Use this property to check the time the key was generated. The date and time are stored and retrieved in Universal Coordinate Time (UTC).

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_username Property

Specifies the name of the user bound to this key.

Syntax

def get_selected_key_username(selected_key_index: int) -> str: ...

Default Value

Remarks

Specifies the name of the user bound to this key.

The PGP username is typically represented with a full name and an email address, but generally can be any non-empty string.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_valid_to Property

Provide accurate expiration moment indication.

Syntax

def get_selected_key_valid_to(selected_key_index: int) -> str: ...

Default Value

"0"

Remarks

Provide accurate expiration moment indication. This is different to expires property which only contains expiration time in days in old keys.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

selected_key_version Property

Indicates the key version.

Syntax

def get_selected_key_version(selected_key_index: int) -> int: ...

Default Value

Remarks

Indicates the key version.

The key version refers to the version of the public-key packet format as defined in RFC 4880.

Only four versions are currently allowed here: 3, 4, 5 and 6. It is recommended that all new keys are created with version of 6.

The selected_key_index parameter specifies the index of the item in the array. The size of the array is controlled by the selected_key_count property.

This property is read-only.

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.

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;....

Common ActionIDs:


Action	Parameters	Returned value	Description
ResetTrustedListCache	none	none	Clears the cached list of trusted lists.
ResetCertificateCache	none	none	Clears the cached certificates.
ResetCRLCache	none	none	Clears the cached CRLs.
ResetOCSPResponseCache	none	none	Clears the cached OCSP responses.

export_bytes Method

Exports the keyring to a byte array.

Syntax

def export_bytes(secret: bool) -> bytes: ...

Remarks

Use this method to export the keyring to a byte array. PGP software typically uses two files to store keyrings. Use Secret parameter to specify which part of the keyring you would like to export (public or secret).

export_to_file Method

Exports the keyring to disk.

Syntax

def export_to_file(file_name: str, secret: bool) -> None: ...

Remarks

Use this method to export the keyring to disk. PGP software typically uses two files to store keyrings, public and private.

import_bytes Method

Loads a key from a byte array.

Syntax

def import_bytes(keyring: bytes) -> None: ...

Remarks

Use this method to load a key, either public or secret, from a byte array.

import_from_file Method

Loads a key from a file.

Syntax

def import_from_file(keyring_file: str) -> None: ...

Remarks

Use this method to load a key, either public or secret, from a file.

import_pinned Method

Imports a pinned secret key to the keyring.

Syntax

def import_pinned() -> None: ...

Remarks

Use this method to import a key provided via pinned_key to the keyring. This can be a public or secret key.

remove Method

Removes the specified key from the keyring.

Syntax

def remove(index: int) -> None: ...

Remarks

Use this method to remove a key from the keyring. Use Index to pass the index of the key to be removed.

remove_by_id Method

Removes key by its ID.

Syntax

def remove_by_id(key_id: str) -> None: ...

Remarks

Call this method to remove the specified key from the keyring.

reset Method

Creates a new empty keyring.

Syntax

def reset() -> None: ...

Remarks

Use this method to initialize a new empty keyring.

select Method

Filters a selection of keys from the keyring using a template.

Syntax

def select(filter: str, secret_only: bool, max_count: int) -> None: ...

Remarks

Use this method to get a list of keys that satisfy the Filter criteria. The filter should follow the "Name=Value" format, where Name can be one of the following:

userid
fp or fingerprint
keyid

Set SecretOnly to True to only search for secret keys. MaxCount allows to limit the number of keys returned.

Once the method completes, the keys that match the criteria will be available in selected_keys property.

update_pinned Method

Update a pinned key in the keyring.

Syntax

def update_pinned() -> None: ...

Remarks

Use this method to update a key provided via pinned_key in the keyring. This can be a public or secret key.

on_error Event

Information about errors during PGP key management.

Syntax

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

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

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

Remarks

The event is fired in case of exceptional conditions during key management.

ErrorCode contains an error code and Description contains a textual description of the error.

on_notification Event

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

Syntax

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

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

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

PGPKeyring 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.

PGPKeyring Config Settings

Armor: Enables or disables ASCII armouring.

Adjust this setting to enable or disable ASCII armouring on the outgoing messages.

ArmorBoundary: Specifies the armour boundary/title.

Use this setting to specify custom ASCII armouring titles that go after the -----BEGIN and -----END tokens.

ArmorHeaders: Specifies armour headers.

Use this setting to provide custom ASCII armouring (PEM) headers that should be included in the output.

UseLongKeyIDs: Enables long (8-byte) KeyID representation.

Switch this setting on to enable long (8-byte/16-char) representation of KeyIDs. The components use the abbreviated 4-byte/8-char representation by default.

Base Config Settings

ASN1UseGlobalTagCache: Controls whether ASN.1 module should use a global object cache.

This is a performance setting. It is unlikely that you will ever need to adjust it.

AssignSystemSmartCardPins: Specifies whether CSP-level PINs should be assigned to CNG keys.

This is a low-level tweak for certain cryptographic providers. It is unlikely that you will ever need to adjust it.

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.

DNSLocalSuffix: The suffix to assign for TLD names.

Use this global setting to adjust the default suffix to assign to top-level domain names. The default is .local.

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".

HardwareCryptoUsePolicy: The hardware crypto usage policy.

This global setting controls the hardware cryptography usage policy: auto, enable, or disable.

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.

HttpVersion: The HTTP version to use in any inner HTTP client components created.

Set this property to 1.0 or 1.1 to indicate the HTTP version that any internal HTTP clients should use.

IgnoreExpiredMSCTLSigningCert: Whether to tolerate the expired Windows Update signing certificate.

It is not uncommon for Microsoft Windows Update Certificate Trust List to be signed with an expired Microsoft certificate. Setting this global property to true makes SBB ignore the expired factor and take the Trust List into account.

ListDelimiter: The delimiter character for multi-element lists.

Allows to set the delimiter for any multi-entry values returned by the component as a string object, such as file lists. For most of the components, this property is set to a newline sequence.

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.

OldClientSideRSAFallback: Specifies whether the SSH client should use a SHA1 fallback.

Tells the SSH client to use a legacy ssh-rsa authentication even if the server indicates support for newer algorithms, such as rsa-sha-256. This is a backward-compatibility tweak.

PKICache: Specifies which PKI elements (certificates, CRLs, OCSP responses) should be cached.

The PKICache setting specifies which Public Key Infrastructure (PKI) elements should be cached to optimize performance and reduce retrieval times. It supports comma-separated values to indicate the specific types of PKI data that should be cached.

Supported Values:


certificate	Enables caching of certificates.
crl	Enables caching of Certificate Revocation Lists (CRLs).
ocsp	Enables caching of OCSP (Online Certificate Status Protocol) responses.

Example (default value): PKICache=certificate,crl,ocsp In this example, the component caches certificates, CRLs, and OCSP responses.

PKICachePath: Specifies the file system path where cached PKI data is stored.

The PKICachePath setting defines the file system path where cached PKI data (e.g., certificates, CRLs, OCSP responses and Trusted Lists) will be stored. This allows the system to persistently save and retrieve PKI cache data, even across application restarts.

The default value is an empty string - no cached PKI data is stored on disk.

Example: PKICachePath=C:\Temp\cache In this example, the cached PKI data is stored in the C:\Temp\cache directory.

ProductVersion: Returns the version of the SecureBlackbox library.

This property returns the long version string of the SecureBlackbox library being used (major.minor.build.revision).

ServerSSLDHKeyLength: Sets the size of the TLS DHE key exchange group.

Use this property to adjust the length, in bits, of the DHE prime to be used by the TLS server.

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).

UseCRLObjectCaching: Specifies whether reuse of loaded CRL objects is enabled.

This setting enables or disables the caching of CRL objects. When set to true (the default value), the system checks if a CRL object is already loaded in memory before attempting to load a new instance. If the object is found, the existing instance is reused, and its reference count is incremented to track its usage. When the reference count reaches zero, indicating that no references to the object remain, the system will free the object from memory. This setting enhances performance by minimizing unnecessary object instantiation and promotes efficient memory management, particularly in scenarios where CRL objects are frequently used.

UseInternalRandom: Switches between SecureBlackbox-own and platform PRNGs.

Allows to switch between internal/native PRNG implementation and the one provided by the platform.

UseLegacyAdESValidation: Enables legacy AdES validation mode.

Use this setting to switch the AdES component to the validation approach that was used in SBB 2020/SBB 2022 (less attention to temporal details).

UseOCSPResponseObjectCaching: Specifies whether reuse of loaded OCSP response objects is enabled.

This setting enables or disables the caching of OCSP response objects. When set to true (the default value), the system checks if a OCSP response object is already loaded in memory before attempting to load a new instance. If the object is found, the existing instance is reused, and its reference count is incremented to track its usage. When the reference count reaches zero, indicating that no references to the object remain, the system will free the object from memory. This setting enhances performance by minimizing unnecessary object instantiation and promotes efficient memory management, particularly in scenarios where OCSP response objects are frequently used.

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.

UseSystemNativeSizeCalculation: An internal CryptoAPI access tweak.

This is an internal setting. Please do not use it unless instructed by the support team.

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.

XMLRDNDescriptorName[OID]: Defines an OID mapping to descriptor names for the certificate's IssuerRDN or SubjectRDN.

This property defines custom mappings between Object Identifiers (OIDs) and descriptor names. This mapping specifies how the certificate's issuer and subject information (ds:IssuerRDN and ds:SubjectRDN elements respectively) are represented in XML signatures.

The property accepts comma-separated values where the first descriptor name is used when the OID is mapped, and subsequent values act as aliases for parsing.

Syntax: Config("XMLRDNDescriptorName[OID]=PrimaryName,Alias1,Alias2");

Where:

OID: The Object Identifier from the certificate's IssuerRDN or SubjectRDN that you want to map.

PrimaryName: The main descriptor name used in the XML signature when the OID is encountered.

Alias1, Alias2, ...: Optional alternative names recognized during parsing.

Usage Examples:

Map OID 2.5.4.5 to SERIALNUMBER: Config("XMLRDNDescriptorName[2.5.4.5]=SERIALNUMBER");

Map OID 1.2.840.113549.1.9.1 to E, with aliases EMAIL and EMAILADDRESS: Config("XMLRDNDescriptorName[1.2.840.113549.1.9.1]=E,EMAIL,EMAILADDRESS");

XMLRDNDescriptorPriority[OID]: Specifies the priority of descriptor names associated with a specific OID.

This property specifies the priority of descriptor names associated with a specific OID that allows to reorder descriptors in the ds:IssuerRDN and ds:SubjectRDN elements during signing.

XMLRDNDescriptorReverseOrder: Specifies whether to reverse the order of descriptors in RDN.

Specifies whether to reverse the order of descriptors in the ds:IssuerRDN and ds:SubjectRDN elements during XML signing. By default, this property is set to true (as specified in RFC 2253, 2.1).

XMLRDNDescriptorSeparator: Specifies the separator used between descriptors in RDN.

Specifies the separator used between descriptors in the ds:IssuerRDN and ds:SubjectRDN elements during XML signing. By default, this property is set to ", " value.

PGPKeyring Errors

1048577	Invalid parameter (`SB_ERROR_INVALID_PARAMETER`)
1048578	Invalid configuration (`SB_ERROR_INVALID_SETUP`)
1048579	Invalid state (`SB_ERROR_INVALID_STATE`)
1048580	Invalid value (`SB_ERROR_INVALID_VALUE`)
1048581	Private key not found (`SB_ERROR_NO_PRIVATE_KEY`)
1048582	Cancelled by the user (`SB_ERROR_CANCELLED_BY_USER`)
1048583	The file was not found (`SB_ERROR_NO_SUCH_FILE`)
1048584	Unsupported feature or operation (`SB_ERROR_UNSUPPORTED_FEATURE`)
1048585	General error (`SB_ERROR_GENERAL_ERROR`)
27262977	The file was not found (`SB_ERROR_PGP_FILE_NOT_EXISTS`)
27262978	Invalid signing key (`SB_ERROR_PGP_INVALID_KEY`)
27262980	No secret key is available (`SB_ERROR_PGP_NO_SECRET_KEY`)
27262982	The operation is not supported on a subkey (`SB_ERROR_PGP_OPERATION_ON_SUBKEY`)