SMTPClient Class

Properties   Methods   Events   Config Settings   Errors  

The SMTPClient class provides client-side functionality for SMTP (Simple Mail Transfer Protocol).

Syntax

secureblackbox.SMTPClient

Remarks

Use this component to send e-mails from your application.

You can connect to an SMTP server using either username/password or with an access token. // Connect using username/password SMTPClient client = new SMTPClient(); client.Username = "user"; client.Password = "password"; client.Connect("mail.domain.com", 465); client.SendFile("path\\message.eml"); client.Disconnect(); // Connect using an access token (note that the username should be the same as the one used to obtain the access token) SMTPClient client = new SMTPClient(); client.Username = "user"; client.AccessToken = access_token; client.Connect("smtp.gmail.com", 587); client.SendBytes(buffer); client.Disconnect(); // To send messages without authentication, switch off ForceLogin config property SMTPClient client = new SMTPClient(); client.Config("ForceLogin=false"); client.Connect("smtp.myisp.net", 25); client.SendBytes(buffer); client.Disconnect();

Use Command and CommandReply events to get a session log. SMTPClient client = new SMTPClient(); client.OnCommand += delegate (Object sender, SMTPClientCommandEventArgs e) { Console.WriteLine($"C: {e.Cmd}"); }; client.OnCommandReply += delegate (Object sender, SMTPClientCommandReplyEventArgs e) { Console.WriteLine($"S: {e.Reply}"); };

Property List


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

AccessTokenAn OAuth 2.0 access token to authenticate to the server.
BlockedCertificatesThe certificates that must be rejected as trust anchors.
ConnectionInfoReturns the details of the underlying network connection.
DomainThe sender host's domain name for HELO/EHLO.
ExternalCryptoProvides access to external signing and DC parameters.
FIPSModeReserved.
KnownCertificatesAdditional certificates for chain validation.
KnownCRLsAdditional CRLs for chain validation.
KnownOCSPsAdditional OCSP responses for chain validation.
MessageContains an e-mail message.
PasswordThe authentication password.
ProxyThe proxy server settings.
ServerInfoEncapsulates information about the server.
SessionLogContains the complete log of the last session.
SocketSettingsManages network connection settings.
TLSClientChainThe TLS client certificate chain.
TLSServerChainThe TLS server's certificate chain.
TLSSettingsManages TLS layer settings.
TrustedCertificatesA list of trusted certificates for chain validation.
UsernameThe authentication username.

Method List


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

ConfigSets or retrieves a configuration setting.
ConnectEstablishes a connection to the SMTP server.
DisconnectCloses connection to the SMTP server.
DoActionPerforms an additional action.
ResetResets the class settings.
SendBytesSends an e-mail message stored in a byte array.
SendFileSends an e-mail message stored in a file.
SendMessageSends a message to the SMTP server.
SendStreamSends an e-mail message stored in a stream.

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.

AuthFailedFires when an authentication attempt has failed.
AuthStartFires when the authentication is about to be started.
AuthSucceededFires when the authentication has succeeded.
CommandReports a command sent to the server.
CommandDataReturns the data that accompanies the command.
CommandReplyReports the receipt of a reply to a command.
ErrorProvides information about errors during SMTP operations.
ExternalSignHandles remote or external signing initiated by the SignExternal method or other source.
NotificationThis event notifies the application about an underlying control flow event.
ProgressReports the progress of the data transfer operation.
TLSCertNeededFires when a remote TLS party requests a client certificate.
TLSCertValidateThis event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.
TLSEstablishedFires when a TLS handshake with Host successfully completes.
TLSHandshakeFires when a new TLS handshake is initiated, before the handshake commences.
TLSPSKNotifies the application about the PSK key exchange.
TLSShutdownReports the graceful closure of a TLS connection.

Config Settings


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

AuthenticationsSpecifies enabled authentication methods and their priorities.
BinaryChunkSizeSpecifies the size of chunks to use for dividing outgoing messages in binary mode.
BinaryModeSpecifies whether binary mode is allowed for sending.
DSNOptionsSpecifies the mode for Delivery Status Notifications (DSN).
DSNReturnInfoSpecifies notification return info for DSN.
ForceLoginForces the class to login to the server.
IgnoreSystemTrustWhether trusted Windows Certificate Stores should be treated as trusted.
RemoveBCCSpecifies if BCC header fields should be removed from messages.
SendBufferSizeSize of send buffer in bytes.
SessionLogDetailsSpecifies whether login credentials should be written to the session log.
StaticDNSSpecifies whether static DNS rules should be used.
StaticIPAddress[domain]Gets or sets an IP address for the specified domain name.
StaticIPAddressesGets or sets all the static DNS rules.
TempPathPath for storing temporary files.
TLSExtensionsTBD.
TLSPeerExtensionsTBD.
TLSSessionGroupSpecifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetimeSpecifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeIntervalSpecifies how often the session cache should remove the expired TLS sessions.
TolerateMinorChainIssuesWhether to tolerate minor chain issues.
UseMicrosoftCTLEnables or disables the automatic use of the Microsoft online certificate trust list.
UseSystemCertificatesEnables or disables the use of the system certificates.
ASN1UseGlobalTagCacheControls whether ASN.1 module should use a global object cache.
AssignSystemSmartCardPinsSpecifies whether CSP-level PINs should be assigned to CNG keys.
CheckKeyIntegrityBeforeUseEnables or disable private key integrity check before use.
CookieCachingSpecifies whether a cookie cache should be used for HTTP(S) transports.
CookiesGets or sets local cookies for the class.
DefDeriveKeyIterationsSpecifies the default key derivation algorithm iteration count.
DNSLocalSuffixThe suffix to assign for TLD names.
EnableClientSideSSLFFDHEEnables or disables finite field DHE key exchange support in TLS clients.
GlobalCookiesGets or sets global cookies for all the HTTP transports.
HardwareCryptoUsePolicyThe hardware crypto usage policy.
HttpUserAgentSpecifies the user agent name to be used by all HTTP clients.
HttpVersionThe HTTP version to use in any inner HTTP client classes created.
IgnoreExpiredMSCTLSigningCertWhether to tolerate the expired Windows Update signing certificate.
ListDelimiterThe delimiter character for multi-element lists.
LogDestinationSpecifies the debug log destination.
LogDetailsSpecifies the debug log details to dump.
LogFileSpecifies the debug log filename.
LogFiltersSpecifies the debug log filters.
LogFlushModeSpecifies the log flush mode.
LogLevelSpecifies the debug log level.
LogMaxEventCountSpecifies the maximum number of events to cache before further action is taken.
LogRotationModeSpecifies the log rotation mode.
MaxASN1BufferLengthSpecifies the maximal allowed length for ASN.1 primitive tag data.
MaxASN1TreeDepthSpecifies the maximal depth for processed ASN.1 trees.
OCSPHashAlgorithmSpecifies the hash algorithm to be used to identify certificates in OCSP requests.
OldClientSideRSAFallbackSpecifies whether the SSH client should use a SHA1 fallback.
ProductVersionReturns the version of the SecureBlackbox library.
ServerSSLDHKeyLengthSets the size of the TLS DHE key exchange group.
StaticDNSSpecifies whether static DNS rules should be used.
StaticIPAddress[domain]Gets or sets an IP address for the specified domain name.
StaticIPAddressesGets or sets all the static DNS rules.
TagAllows to store any custom data.
TLSSessionGroupSpecifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetimeSpecifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeIntervalSpecifies how often the session cache should remove the expired TLS sessions.
UseInternalRandomSwitches between SecureBlackbox-own and platform PRNGs.
UseLegacyAdESValidationEnables legacy AdES validation mode.
UseOwnDNSResolverSpecifies whether the client classes should use own DNS resolver.
UseSharedSystemStoragesSpecifies whether the validation engine should use a global per-process copy of the system certificate stores.
UseSystemNativeSizeCalculationAn internal CryptoAPI access tweak.
UseSystemOAEPAndPSSEnforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandomEnables or disables the use of the OS PRNG.

AccessToken Property (SMTPClient Class)

An OAuth 2.0 access token to authenticate to the server.

Syntax


public String getAccessToken();


public void setAccessToken(String accessToken);

Default Value

""

Remarks

Use this property to provide the access token to be used to authenticate to the destination server.

BlockedCertificates Property (SMTPClient Class)

The certificates that must be rejected as trust anchors.

Syntax


public CertificateList getBlockedCertificates();


public void setBlockedCertificates(CertificateList blockedCertificates);

Remarks

Use this property to provide a list of compromised or blocked certificates. Any chain containing a blocked certificate will fail validation.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

ConnectionInfo Property (SMTPClient Class)

Returns the details of the underlying network connection.

Syntax


public TLSConnectionInfo getConnectionInfo();


Remarks

Use this property to learn about the connection setup, such as the protocol security details and amounts of data transferred each way.

This property is read-only and not available at design time.

Please refer to the TLSConnectionInfo type for a complete list of fields.

Domain Property (SMTPClient Class)

The sender host's domain name for HELO/EHLO.

Syntax


public String getDomain();


public void setDomain(String domain);

Default Value

""

Remarks

Use this property before calling the Connect method to provie the domain name of the sender's host.

ExternalCrypto Property (SMTPClient Class)

Provides access to external signing and DC parameters.

Syntax


public ExternalCrypto getExternalCrypto();


Remarks

Use this property to tune-up remote cryptography settings. SecureBlackbox supports two independent types of external cryptography: synchronous (based on the ExternalSign event) and asynchronous (based on the DC protocol and the DCAuth signing component).

This property is read-only.

Please refer to the ExternalCrypto type for a complete list of fields.

FIPSMode Property (SMTPClient Class)

Reserved.

Syntax


public boolean isFIPSMode();


public void setFIPSMode(boolean FIPSMode);

Default Value

False

Remarks

This property is reserved for future use.

KnownCertificates Property (SMTPClient Class)

Additional certificates for chain validation.

Syntax


public CertificateList getKnownCertificates();


public void setKnownCertificates(CertificateList knownCertificates);

Remarks

Use this property to supply a list of additional certificates that might be needed for chain validation. An example of a scenario where you might want to do that is when intermediary CA certificates are absent from the standard system locations (or when there are no standard system locations), and therefore should be supplied to the class manually.

The purpose of the certificates to be added to this collection is roughly equivalent to that of the Intermediate Certification Authorities system store in Windows.

Do not add trust anchors or root certificates to this collection: add them to TrustedCertificates instead.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

KnownCRLs Property (SMTPClient Class)

Additional CRLs for chain validation.

Syntax


public CRLList getKnownCRLs();


public void setKnownCRLs(CRLList knownCRLs);

Remarks

Use this property to supply additional CRLs that might be needed for chain validation. This property may be helpful when a chain is validated in offline mode, and the associated CRLs are stored separately from the signed message or document.

This property is not available at design time.

Please refer to the CRL type for a complete list of fields.

KnownOCSPs Property (SMTPClient Class)

Additional OCSP responses for chain validation.

Syntax


public OCSPResponseList getKnownOCSPs();


public void setKnownOCSPs(OCSPResponseList knownOCSPs);

Remarks

Use this property to supply additional OCSP responses that might be needed for chain validation. This property may be helpful when a chain is validated in offline mode, and the associated OCSP responses are stored separately from the signed message or document.

This property is not available at design time.

Please refer to the OCSPResponse type for a complete list of fields.

Message Property (SMTPClient Class)

Contains an e-mail message.

Syntax


public MailMessage getMessage();


public void setMessage(MailMessage message);

Remarks

Use this property to provide the e-mail message to send.

This property is not available at design time.

Please refer to the MailMessage type for a complete list of fields.

Password Property (SMTPClient Class)

The authentication password.

Syntax


public String getPassword();


public void setPassword(String password);

Default Value

""

Remarks

Use this property to provide the password for authenticating to the SMTP server.

In order to use OAuth 2.0 authentication to access the SMTP server, use the AccessToken property instead.

Proxy Property (SMTPClient Class)

The proxy server settings.

Syntax


public ProxySettings getProxy();


Remarks

Use this property to tune up the proxy server settings.

This property is read-only.

Please refer to the ProxySettings type for a complete list of fields.

ServerInfo Property (SMTPClient Class)

Encapsulates information about the server.

Syntax


public SMTPServerInfo getServerInfo();


Remarks

Use this property after establishing a connection to the server to learn about the SMTP server's capabilities.

This property is read-only and not available at design time.

Please refer to the SMTPServerInfo type for a complete list of fields.

SessionLog Property (SMTPClient Class)

Contains the complete log of the last session.

Syntax


public String getSessionLog();


Default Value

""

Remarks

Use this property to access the session log produced by the class. The log can be very useful when investigating connection issues.

See the SessionLogDetails config property for the log details settings.

This property is read-only and not available at design time.

SocketSettings Property (SMTPClient Class)

Manages network connection settings.

Syntax


public SocketSettings getSocketSettings();


Remarks

Use this property to tune up network connection parameters.

This property is read-only.

Please refer to the SocketSettings type for a complete list of fields.

TLSClientChain Property (SMTPClient Class)

The TLS client certificate chain.

Syntax


public CertificateList getTLSClientChain();


public void setTLSClientChain(CertificateList TLSClientChain);

Remarks

Assign a certificate chain to this property to enable TLS client authentication in the class. Note that the client's end-entity certificate should have a private key associated with it.

Use the CertificateStorage or CertificateManager components to import the certificate from a file, system store, or PKCS11 device.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

TLSServerChain Property (SMTPClient Class)

The TLS server's certificate chain.

Syntax


public CertificateList getTLSServerChain();


Remarks

Use this property to access the certificate chain sent by the TLS server. This property is ready to read when the TLSCertValidate event is fired by the client component.

This property is read-only and not available at design time.

Please refer to the Certificate type for a complete list of fields.

TLSSettings Property (SMTPClient Class)

Manages TLS layer settings.

Syntax


public TLSSettings getTLSSettings();


Remarks

Use this property to tune up the TLS layer parameters.

This property is read-only.

Please refer to the TLSSettings type for a complete list of fields.

TrustedCertificates Property (SMTPClient Class)

A list of trusted certificates for chain validation.

Syntax


public CertificateList getTrustedCertificates();


public void setTrustedCertificates(CertificateList trustedCertificates);

Remarks

Use this property to supply a list of trusted certificates that might be needed for chain validation. An example of a scenario where you might want to do that is when root CA certificates are absent from the standard system locations (or when there are no standard system locations), and therefore should be supplied to the component manually.

The purpose of this certificate collection is largely the same as that of the Windows Trusted Root Certification Authorities system store.

Use this property with extreme care as it directly affects chain verifiability; a wrong certificate added to the trusted list may result in bad chains being accepted, and forfeited signatures being recognized as genuine. Only add certificates that originate from the parties that you know and trust.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

Username Property (SMTPClient Class)

The authentication username.

Syntax


public String getUsername();


public void setUsername(String username);

Default Value

""

Remarks

Use this property to provide the username for authenticating to the SMTP server.

Config Method (SMTPClient Class)

Sets or retrieves a configuration setting.

Syntax

public String config(String configurationString);

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 (SMTPClient Class)

Establishes a connection to the SMTP server.

Syntax

public void connect(String address, int port);

Remarks

Use this method to establish a connection to the SMTP server at Address and Port.

Disconnect Method (SMTPClient Class)

Closes connection to the SMTP server.

Syntax

public void disconnect();

Remarks

Call this method when all messages have been sent.

DoAction Method (SMTPClient Class)

Performs an additional action.

Syntax

public String doAction(String actionID, String actionParams);

Remarks

DoAction 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;....

Reset Method (SMTPClient Class)

Resets the class settings.

Syntax

public void reset();

Remarks

Reset is a generic method available in every class.

SendBytes Method (SMTPClient Class)

Sends an e-mail message stored in a byte array.

Syntax

public void sendBytes(byte[] bytes);

Remarks

Use this method to send a message stored in a byte array specified by Bytes.

SendFile Method (SMTPClient Class)

Sends an e-mail message stored in a file.

Syntax

public void sendFile(String fileName);

Remarks

Use this method to send a message stored in the file specified by FileName.

SendMessage Method (SMTPClient Class)

Sends a message to the SMTP server.

Syntax

public void sendMessage();

Remarks

Use this method to send a Message to the SMTP server.

SendStream Method (SMTPClient Class)

Sends an e-mail message stored in a stream.

Syntax

public void sendStream(java.io.InputStream stream);

Remarks

Use this method to send a message stored in the Stream to the server.

AuthFailed Event (SMTPClient Class)

Fires when an authentication attempt has failed.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void authFailed(SMTPClientAuthFailedEvent e) {}
  ...
}

public class SMTPClientAuthFailedEvent {
  public String auth;
  public int errorCode;
  public String errorMessage;
  public String serverReply;
  public boolean tryAgain; //read-write
}

Remarks

The class fires this event when an authentication attempt has failed for some reason.

Auth reports the authentication method that has failed. You can adjust the Authentications config property to try another method.

ErrorCode contains an error code, and ErrorMessage contains an error message.

ServerReply provides the error info reported by the server. This info depends on the transport protocol and on the authentication method.

Set the TryAgain parameter to true if the class should try to authenticate again. If the parameter remains false, the authentication will fail with an exception.

AuthStart Event (SMTPClient Class)

Fires when the authentication is about to be started.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void authStart(SMTPClientAuthStartEvent e) {}
  ...
}

public class SMTPClientAuthStartEvent {
  public String usableAuths;
}

Remarks

The class fires this event when it has established the TCP connection and is ready to proceed to the user authentication step.

The UsableAuths parameter contains a comma-separated list of the authentication methods supported by both, the client and the server.

In this event handler it's possible to update the method list in the Authentications config property according to the provided list of usable methods. The full list of the authentication methods supported by the server is available in ServerInfo.SupportedAuths.

AuthSucceeded Event (SMTPClient Class)

Fires when the authentication has succeeded.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void authSucceeded(SMTPClientAuthSucceededEvent e) {}
  ...
}

public class SMTPClientAuthSucceededEvent {
  public String auth;
}

Remarks

The class fires this event when it has succeeded to authenticate to the server. Auth reports the authentication method that has succeeded.

Command Event (SMTPClient Class)

Reports a command sent to the server.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void command(SMTPClientCommandEvent e) {}
  ...
}

public class SMTPClientCommandEvent {
  public String cmd;
}

Remarks

The class fires this event whenever it sends an SMTP command to the server. Use CommandReply to track the server's responses.

CommandData Event (SMTPClient Class)

Returns the data that accompanies the command.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void commandData(SMTPClientCommandDataEvent e) {}
  ...
}

public class SMTPClientCommandDataEvent {
  public String cmd;
  public String data;
}

Remarks

Subscribe to this event to access data accompanying the outgoing commands.

CommandReply Event (SMTPClient Class)

Reports the receipt of a reply to a command.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void commandReply(SMTPClientCommandReplyEvent e) {}
  ...
}

public class SMTPClientCommandReplyEvent {
  public String cmd;
  public String reply;
}

Remarks

Use this event to track command replies sent in by the server. Use Command to track the commands sent out by the client.

Error Event (SMTPClient Class)

Provides information about errors during SMTP operations.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void error(SMTPClientErrorEvent e) {}
  ...
}

public class SMTPClientErrorEvent {
  public int errorCode;
  public String description;
}

Remarks

This event is fired in case of exceptional conditions occured during SMTP operations.

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

ExternalSign Event (SMTPClient Class)

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

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void externalSign(SMTPClientExternalSignEvent e) {}
  ...
}

public class SMTPClientExternalSignEvent {
  public String operationId;
  public String hashAlgorithm;
  public String pars;
  public String data;
  public String signedData; //read-write
}

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(); };

Notification Event (SMTPClient Class)

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

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void notification(SMTPClientNotificationEvent e) {}
  ...
}

public class SMTPClientNotificationEvent {
  public String eventID;
  public String eventParam;
}

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.

This class can fire this event with the following EventID values:

TLSExtensions.CertificateStatusTBD
TLSExtensions.PreSharedIdentityHintTBD

Progress Event (SMTPClient Class)

Reports the progress of the data transfer operation.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void progress(SMTPClientProgressEvent e) {}
  ...
}

public class SMTPClientProgressEvent {
  public long total;
  public long current;
  public boolean cancel; //read-write
}

Remarks

The class fires this event repeatedly to report the progress of the data transfer operation.

TLSCertNeeded Event (SMTPClient Class)

Fires when a remote TLS party requests a client certificate.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void TLSCertNeeded(SMTPClientTLSCertNeededEvent e) {}
  ...
}

public class SMTPClientTLSCertNeededEvent {
  public String host;
  public String CANames;
}

Remarks

This event fires to notify the implementation that a remote TLS server has requested a client certificate. The Host parameter identifies the host that makes a request, and the CANames parameter (optional, according to the TLS spec) advises on the accepted issuing CAs.

Use the TLSClientChain property in response to this event to provide the requested certificate. Please make sure the client certificate includes the associated private key. Note that you may set the certificates before the connection without waiting for this event to fire.

This event is preceded by the TLSHandshake event for the given host and, if the certificate was accepted, succeeded by the TLSEstablished event.

TLSCertValidate Event (SMTPClient Class)

This event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void TLSCertValidate(SMTPClientTLSCertValidateEvent e) {}
  ...
}

public class SMTPClientTLSCertValidateEvent {
  public String serverHost;
  public String serverIP;
  public boolean accept; //read-write
}

Remarks

This event is fired during a TLS handshake. Use the TLSServerChain property to access the certificate chain. In general, classes may contact a number of TLS endpoints during their work, depending on their configuration.

Accept is assigned in accordance with the outcome of the internal validation check performed by the class, and can be adjusted if needed.

TLSEstablished Event (SMTPClient Class)

Fires when a TLS handshake with Host successfully completes.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void TLSEstablished(SMTPClientTLSEstablishedEvent e) {}
  ...
}

public class SMTPClientTLSEstablishedEvent {
  public String host;
  public String version;
  public String ciphersuite;
  public byte[] connectionId;
  public boolean abort; //read-write
}

Remarks

The class uses this event to notify the application about a successful completion of a TLS handshake.

The Version, Ciphersuite, and ConnectionId parameters indicate the security parameters of the new connection. Use the Abort parameter if you need to terminate the connection at this stage.

TLSHandshake Event (SMTPClient Class)

Fires when a new TLS handshake is initiated, before the handshake commences.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void TLSHandshake(SMTPClientTLSHandshakeEvent e) {}
  ...
}

public class SMTPClientTLSHandshakeEvent {
  public String host;
  public boolean abort; //read-write
}

Remarks

The class uses this event to notify the application about the start of a new TLS handshake to Host. If the handshake is successful, this event will be followed by the TLSEstablished event. If the server chooses to request a client certificate, the TLSCertNeeded event will also be fired.

TLSPSK Event (SMTPClient Class)

Notifies the application about the PSK key exchange.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void TLSPSK(SMTPClientTLSPSKEvent e) {}
  ...
}

public class SMTPClientTLSPSKEvent {
  public String host;
  public String hint;
}

Remarks

The class fires this event to notify the application about the beginning of TLS-PSK key exchange with Host. The Hint parameter may be used by the server to identify the key or service to use. Use the PreSharedKey field of TLSSettings to provide the pre-shared key to the component.

TLSShutdown Event (SMTPClient Class)

Reports the graceful closure of a TLS connection.

Syntax

public class DefaultSMTPClientEventListener implements SMTPClientEventListener {
  ...
  public void TLSShutdown(SMTPClientTLSShutdownEvent e) {}
  ...
}

public class SMTPClientTLSShutdownEvent {
  public String host;
}

Remarks

This event notifies the application about the closure of an earlier established TLS connection. Note that only graceful connection closures are reported.

Certificate Type

Encapsulates an individual X.509 certificate.

Remarks

This type keeps and provides access to X.509 certificate details.

The following fields are available:

Fields

Bytes
byte[] (read-only)

Default Value: ""

Returns the raw certificate data in DER format.

CA
boolean

Default Value: False

Indicates whether the certificate has a CA capability. For the certificate to be considered a CA, it must have its Basic Constraints extension set with the CA indicator enabled.

Set this field when generating a new certificate to have its Basic Constraints extension generated automatically.

CAKeyID
byte[] (read-only)

Default Value: ""

A unique identifier (fingerprint) of the CA certificate's cryptographic key.

Authority Key Identifier is a certificate extension which allows identification of certificates belonging to the same issuer, but with different public keys. It is a de-facto standard to include this extension in all certificates to facilitate chain building.

This setting cannot be set when generating a certificate as it always derives from another certificate property. CertificateManager generates this setting automatically if enough information is available to it: for self-signed certificates, this value is copied from the SubjectKeyID setting, and for lower-level certificates, from the parent certificate's subject key ID extension.

CertType
int (read-only)

Default Value: 0

Returns the type of the entity contained in the Certificate object.

A Certificate object can contain two types of cryptographic objects: a ready-to-use X.509 certificate, or a certificate request ("an unsigned certificate"). Certificate requests can be upgraded to full certificates by signing them with a CA certificate.

Use the CertificateManager class to load or create new certificate and certificate requests objects.

CRLDistributionPoints
String

Default Value: ""

Contains a list of locations of CRL distribution points used to check this certificate's validity. The list is taken from the respective certificate extension.

Use this field when generating a certificate to provide a list of CRL endpoints that should be made part of the new certificate.

The endpoints are provided as a list of CRLF-separated URLs. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the location separator.

Curve
String

Default Value: ""

Specifies the elliptic curve associated with the certificate's public key. This setting only applies to certificates containing EC keys.

SB_EC_SECP112R1SECP112R1
SB_EC_SECP112R2SECP112R2
SB_EC_SECP128R1SECP128R1
SB_EC_SECP128R2SECP128R2
SB_EC_SECP160K1SECP160K1
SB_EC_SECP160R1SECP160R1
SB_EC_SECP160R2SECP160R2
SB_EC_SECP192K1SECP192K1
SB_EC_SECP192R1SECP192R1
SB_EC_SECP224K1SECP224K1
SB_EC_SECP224R1SECP224R1
SB_EC_SECP256K1SECP256K1
SB_EC_SECP256R1SECP256R1
SB_EC_SECP384R1SECP384R1
SB_EC_SECP521R1SECP521R1
SB_EC_SECT113R1SECT113R1
SB_EC_SECT113R2SECT113R2
SB_EC_SECT131R1SECT131R1
SB_EC_SECT131R2SECT131R2
SB_EC_SECT163K1SECT163K1
SB_EC_SECT163R1SECT163R1
SB_EC_SECT163R2SECT163R2
SB_EC_SECT193R1SECT193R1
SB_EC_SECT193R2SECT193R2
SB_EC_SECT233K1SECT233K1
SB_EC_SECT233R1SECT233R1
SB_EC_SECT239K1SECT239K1
SB_EC_SECT283K1SECT283K1
SB_EC_SECT283R1SECT283R1
SB_EC_SECT409K1SECT409K1
SB_EC_SECT409R1SECT409R1
SB_EC_SECT571K1SECT571K1
SB_EC_SECT571R1SECT571R1
SB_EC_PRIME192V1PRIME192V1
SB_EC_PRIME192V2PRIME192V2
SB_EC_PRIME192V3PRIME192V3
SB_EC_PRIME239V1PRIME239V1
SB_EC_PRIME239V2PRIME239V2
SB_EC_PRIME239V3PRIME239V3
SB_EC_PRIME256V1PRIME256V1
SB_EC_C2PNB163V1C2PNB163V1
SB_EC_C2PNB163V2C2PNB163V2
SB_EC_C2PNB163V3C2PNB163V3
SB_EC_C2PNB176W1C2PNB176W1
SB_EC_C2TNB191V1C2TNB191V1
SB_EC_C2TNB191V2C2TNB191V2
SB_EC_C2TNB191V3C2TNB191V3
SB_EC_C2ONB191V4C2ONB191V4
SB_EC_C2ONB191V5C2ONB191V5
SB_EC_C2PNB208W1C2PNB208W1
SB_EC_C2TNB239V1C2TNB239V1
SB_EC_C2TNB239V2C2TNB239V2
SB_EC_C2TNB239V3C2TNB239V3
SB_EC_C2ONB239V4C2ONB239V4
SB_EC_C2ONB239V5C2ONB239V5
SB_EC_C2PNB272W1C2PNB272W1
SB_EC_C2PNB304W1C2PNB304W1
SB_EC_C2TNB359V1C2TNB359V1
SB_EC_C2PNB368W1C2PNB368W1
SB_EC_C2TNB431R1C2TNB431R1
SB_EC_NISTP192NISTP192
SB_EC_NISTP224NISTP224
SB_EC_NISTP256NISTP256
SB_EC_NISTP384NISTP384
SB_EC_NISTP521NISTP521
SB_EC_NISTB163NISTB163
SB_EC_NISTB233NISTB233
SB_EC_NISTB283NISTB283
SB_EC_NISTB409NISTB409
SB_EC_NISTB571NISTB571
SB_EC_NISTK163NISTK163
SB_EC_NISTK233NISTK233
SB_EC_NISTK283NISTK283
SB_EC_NISTK409NISTK409
SB_EC_NISTK571NISTK571
SB_EC_GOSTCPTESTGOSTCPTEST
SB_EC_GOSTCPAGOSTCPA
SB_EC_GOSTCPBGOSTCPB
SB_EC_GOSTCPCGOSTCPC
SB_EC_GOSTCPXCHAGOSTCPXCHA
SB_EC_GOSTCPXCHBGOSTCPXCHB
SB_EC_BRAINPOOLP160R1BRAINPOOLP160R1
SB_EC_BRAINPOOLP160T1BRAINPOOLP160T1
SB_EC_BRAINPOOLP192R1BRAINPOOLP192R1
SB_EC_BRAINPOOLP192T1BRAINPOOLP192T1
SB_EC_BRAINPOOLP224R1BRAINPOOLP224R1
SB_EC_BRAINPOOLP224T1BRAINPOOLP224T1
SB_EC_BRAINPOOLP256R1BRAINPOOLP256R1
SB_EC_BRAINPOOLP256T1BRAINPOOLP256T1
SB_EC_BRAINPOOLP320R1BRAINPOOLP320R1
SB_EC_BRAINPOOLP320T1BRAINPOOLP320T1
SB_EC_BRAINPOOLP384R1BRAINPOOLP384R1
SB_EC_BRAINPOOLP384T1BRAINPOOLP384T1
SB_EC_BRAINPOOLP512R1BRAINPOOLP512R1
SB_EC_BRAINPOOLP512T1BRAINPOOLP512T1
SB_EC_CURVE25519CURVE25519
SB_EC_CURVE448CURVE448

Fingerprint
String (read-only)

Default Value: ""

Contains the fingerprint (a hash imprint) of this certificate.

While there is no formal standard defining what a fingerprint is, a SHA1 hash of the certificate's DER-encoded body is typically used.

FriendlyName
String (read-only)

Default Value: ""

Contains an associated alias (friendly name) of the certificate. The friendly name is not a property of a certificate: it is maintained by the certificate media rather than being included in its DER representation. Windows certificate stores are one example of media that does support friendly names.

HashAlgorithm
String

Default Value: ""

Provides means to set the hash algorithm to be used in the subsequent operation on the certificate (such as generation or key signing). It is not a property of a certificate; use SigAlgorithm to find out the hash algorithm that is part of the certificate signature.

SB_HASH_ALGORITHM_SHA1SHA1
SB_HASH_ALGORITHM_SHA224SHA224
SB_HASH_ALGORITHM_SHA256SHA256
SB_HASH_ALGORITHM_SHA384SHA384
SB_HASH_ALGORITHM_SHA512SHA512
SB_HASH_ALGORITHM_MD2MD2
SB_HASH_ALGORITHM_MD4MD4
SB_HASH_ALGORITHM_MD5MD5
SB_HASH_ALGORITHM_RIPEMD160RIPEMD160
SB_HASH_ALGORITHM_CRC32CRC32
SB_HASH_ALGORITHM_SSL3SSL3
SB_HASH_ALGORITHM_GOST_R3411_1994GOST1994
SB_HASH_ALGORITHM_WHIRLPOOLWHIRLPOOL
SB_HASH_ALGORITHM_POLY1305POLY1305
SB_HASH_ALGORITHM_SHA3_224SHA3_224
SB_HASH_ALGORITHM_SHA3_256SHA3_256
SB_HASH_ALGORITHM_SHA3_384SHA3_384
SB_HASH_ALGORITHM_SHA3_512SHA3_512
SB_HASH_ALGORITHM_BLAKE2S_128BLAKE2S_128
SB_HASH_ALGORITHM_BLAKE2S_160BLAKE2S_160
SB_HASH_ALGORITHM_BLAKE2S_224BLAKE2S_224
SB_HASH_ALGORITHM_BLAKE2S_256BLAKE2S_256
SB_HASH_ALGORITHM_BLAKE2B_160BLAKE2B_160
SB_HASH_ALGORITHM_BLAKE2B_256BLAKE2B_256
SB_HASH_ALGORITHM_BLAKE2B_384BLAKE2B_384
SB_HASH_ALGORITHM_BLAKE2B_512BLAKE2B_512
SB_HASH_ALGORITHM_SHAKE_128SHAKE_128
SB_HASH_ALGORITHM_SHAKE_256SHAKE_256
SB_HASH_ALGORITHM_SHAKE_128_LENSHAKE_128_LEN
SB_HASH_ALGORITHM_SHAKE_256_LENSHAKE_256_LEN

Issuer
String (read-only)

Default Value: ""

The common name of the certificate issuer (CA), typically a company name. This is part of a larger set of credentials available via IssuerRDN.

IssuerRDN
String

Default Value: ""

A list of Property=Value pairs that uniquely identify the certificate issuer.

Example: /C=US/O=Nationwide CA/CN=Web Certification Authority

KeyAlgorithm
String

Default Value: "0"

Specifies the public key algorithm of this certificate.

SB_CERT_ALGORITHM_ID_RSA_ENCRYPTIONrsaEncryption
SB_CERT_ALGORITHM_MD2_RSA_ENCRYPTIONmd2withRSAEncryption
SB_CERT_ALGORITHM_MD5_RSA_ENCRYPTIONmd5withRSAEncryption
SB_CERT_ALGORITHM_SHA1_RSA_ENCRYPTIONsha1withRSAEncryption
SB_CERT_ALGORITHM_ID_DSAid-dsa
SB_CERT_ALGORITHM_ID_DSA_SHA1id-dsa-with-sha1
SB_CERT_ALGORITHM_DH_PUBLICdhpublicnumber
SB_CERT_ALGORITHM_SHA224_RSA_ENCRYPTIONsha224WithRSAEncryption
SB_CERT_ALGORITHM_SHA256_RSA_ENCRYPTIONsha256WithRSAEncryption
SB_CERT_ALGORITHM_SHA384_RSA_ENCRYPTIONsha384WithRSAEncryption
SB_CERT_ALGORITHM_SHA512_RSA_ENCRYPTIONsha512WithRSAEncryption
SB_CERT_ALGORITHM_ID_RSAPSSid-RSASSA-PSS
SB_CERT_ALGORITHM_ID_RSAOAEPid-RSAES-OAEP
SB_CERT_ALGORITHM_RSASIGNATURE_RIPEMD160ripemd160withRSA
SB_CERT_ALGORITHM_ID_ELGAMALelGamal
SB_CERT_ALGORITHM_SHA1_ECDSAecdsa-with-SHA1
SB_CERT_ALGORITHM_RECOMMENDED_ECDSAecdsa-recommended
SB_CERT_ALGORITHM_SHA224_ECDSAecdsa-with-SHA224
SB_CERT_ALGORITHM_SHA256_ECDSAecdsa-with-SHA256
SB_CERT_ALGORITHM_SHA384_ECDSAecdsa-with-SHA384
SB_CERT_ALGORITHM_SHA512_ECDSAecdsa-with-SHA512
SB_CERT_ALGORITHM_ECid-ecPublicKey
SB_CERT_ALGORITHM_SPECIFIED_ECDSAecdsa-specified
SB_CERT_ALGORITHM_GOST_R3410_1994id-GostR3410-94
SB_CERT_ALGORITHM_GOST_R3410_2001id-GostR3410-2001
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_1994id-GostR3411-94-with-GostR3410-94
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_2001id-GostR3411-94-with-GostR3410-2001
SB_CERT_ALGORITHM_SHA1_ECDSA_PLAINecdsa-plain-SHA1
SB_CERT_ALGORITHM_SHA224_ECDSA_PLAINecdsa-plain-SHA224
SB_CERT_ALGORITHM_SHA256_ECDSA_PLAINecdsa-plain-SHA256
SB_CERT_ALGORITHM_SHA384_ECDSA_PLAINecdsa-plain-SHA384
SB_CERT_ALGORITHM_SHA512_ECDSA_PLAINecdsa-plain-SHA512
SB_CERT_ALGORITHM_RIPEMD160_ECDSA_PLAINecdsa-plain-RIPEMD160
SB_CERT_ALGORITHM_WHIRLPOOL_RSA_ENCRYPTIONwhirlpoolWithRSAEncryption
SB_CERT_ALGORITHM_ID_DSA_SHA224id-dsa-with-sha224
SB_CERT_ALGORITHM_ID_DSA_SHA256id-dsa-with-sha256
SB_CERT_ALGORITHM_SHA3_224_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-512
SB_CERT_ALGORITHM_SHA3_224_ECDSAid-ecdsa-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_ECDSAid-ecdsa-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_ECDSAid-ecdsa-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_ECDSAid-ecdsa-with-sha3-512
SB_CERT_ALGORITHM_SHA3_224_ECDSA_PLAINid-ecdsa-plain-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_ECDSA_PLAINid-ecdsa-plain-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_ECDSA_PLAINid-ecdsa-plain-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_ECDSA_PLAINid-ecdsa-plain-with-sha3-512
SB_CERT_ALGORITHM_ID_DSA_SHA3_224id-dsa-with-sha3-224
SB_CERT_ALGORITHM_ID_DSA_SHA3_256id-dsa-with-sha3-256
SB_CERT_ALGORITHM_BLAKE2S_128_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b512
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSAid-ecdsa-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSAid-ecdsa-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSAid-ecdsa-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSAid-ecdsa-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSAid-ecdsa-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSAid-ecdsa-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSAid-ecdsa-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSAid-ecdsa-with-blake2b512
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA_PLAINid-ecdsa-plain-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA_PLAINid-ecdsa-plain-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA_PLAINid-ecdsa-plain-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA_PLAINid-ecdsa-plain-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA_PLAINid-ecdsa-plain-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA_PLAINid-ecdsa-plain-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA_PLAINid-ecdsa-plain-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA_PLAINid-ecdsa-plain-with-blake2b512
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_224id-dsa-with-blake2s224
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_256id-dsa-with-blake2s256
SB_CERT_ALGORITHM_EDDSA_ED25519id-Ed25519
SB_CERT_ALGORITHM_EDDSA_ED448id-Ed448
SB_CERT_ALGORITHM_EDDSA_ED25519_PHid-Ed25519ph
SB_CERT_ALGORITHM_EDDSA_ED448_PHid-Ed448ph
SB_CERT_ALGORITHM_EDDSAid-EdDSA
SB_CERT_ALGORITHM_EDDSA_SIGNATUREid-EdDSA-sig

Use the KeyBits, Curve, and PublicKeyBytes fields to get more details about the key the certificate contains.

KeyBits
int (read-only)

Default Value: 0

Returns the length of the public key in bits.

This value indicates the length of the principal cryptographic parameter of the key, such as the length of the RSA modulus or ECDSA field. The key data returned by the PublicKeyBytes or PrivateKeyBytes field would typically contain auxiliary values, and therefore be longer.

KeyFingerprint
String (read-only)

Default Value: ""

Returns a SHA1 fingerprint of the public key contained in the certificate.

Note that the key fingerprint is different from the certificate fingerprint accessible via the Fingerprint field. The key fingeprint uniquely identifies the public key, and so can be the same for multiple certificates containing the same key.

KeyUsage
int

Default Value: 0

Indicates the purposes of the key contained in the certificate, in the form of an OR'ed flag set.

This value is a bit mask of the following values:

ckuUnknown0x00000Unknown key usage

ckuDigitalSignature0x00001Digital signature

ckuNonRepudiation0x00002Non-repudiation

ckuKeyEncipherment0x00004Key encipherment

ckuDataEncipherment0x00008Data encipherment

ckuKeyAgreement0x00010Key agreement

ckuKeyCertSign0x00020Certificate signing

ckuCRLSign0x00040Revocation signing

ckuEncipherOnly0x00080Encipher only

ckuDecipherOnly0x00100Decipher only

ckuServerAuthentication0x00200Server authentication

ckuClientAuthentication0x00400Client authentication

ckuCodeSigning0x00800Code signing

ckuEmailProtection0x01000Email protection

ckuTimeStamping0x02000Timestamping

ckuOCSPSigning0x04000OCSP signing

ckuSmartCardLogon0x08000Smartcard logon

ckuKeyPurposeClientAuth0x10000Kerberos - client authentication

ckuKeyPurposeKDC0x20000Kerberos - KDC

Set this field before generating the certificate to propagate the key usage flags to the new certificate.

KeyValid
boolean (read-only)

Default Value: False

Returns True if the certificate's key is cryptographically valid, and False otherwise.

OCSPLocations
String

Default Value: ""

Locations of OCSP services that can be used to check this certificate's validity in real time, as recorded by the CA.

Set this field before calling the certificate manager's Generate method to propagate it to the new certificate.

The OCSP locations are provided as a list of CRLF-separated URLs. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the location separator.

OCSPNoCheck
boolean

Default Value: False

Accessor to the value of the certificate's ocsp-no-check extension.

Origin
int (read-only)

Default Value: 0

Returns the location that the certificate was taken or loaded from.

PolicyIDs
String

Default Value: ""

Contains identifiers (OIDs) of the applicable certificate policies.

The Certificate Policies extension identifies a sequence of policies under which the certificate has been issued, and which regulate its usage.

Set this field when generating a certificate to propagate the policies information to the new certificate.

The policies are provided as a list of CRLF-separated entries. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the policy element separator.

PrivateKeyBytes
byte[] (read-only)

Default Value: ""

Returns the certificate's private key in DER-encoded format. It is normal for this field to be empty if the private key is non-exportable, which, for example, is typical for certificates originating from hardware security devices.

PrivateKeyExists
boolean (read-only)

Default Value: False

Indicates whether the certificate has a usable private key associated with it. If it is set to True, the certificate can be used for private key operations, such as signing or decryption.

This field is independent from PrivateKeyBytes, and can be set to True even if the former is empty. This would imply that the private key is non-exportable, but still can be used for cryptographic operations.

PrivateKeyExtractable
boolean (read-only)

Default Value: False

Indicates whether the private key is extractable (exportable).

PublicKeyBytes
byte[] (read-only)

Default Value: ""

Contains the certificate's public key in DER format.

This typically would contain an ASN.1-encoded public key value. The exact format depends on the type of the public key contained in the certificate.

Qualified
boolean (read-only)

Default Value: False

Indicates whether the certificate is qualified.

This property is set to True if the certificate is confirmed by a Trusted List to be qualified.

QualifiedStatements
int

Default Value: 0

Returns a simplified qualified status of the certificate.

Qualifiers
String (read-only)

Default Value: ""

A list of qualifiers.

Contains a comma-separated list of qualifier aliases for the certificate, for example QCP-n-qscd,QCWithSSCD.

SelfSigned
boolean (read-only)

Default Value: False

Indicates whether the certificate is self-signed (root) or signed by an external CA.

SerialNumber
byte[]

Default Value: ""

Returns the certificate's serial number.

The serial number is a binary string that uniquely identifies a certificate among others issued by the same CA. According to the X.509 standard, the (issuer, serial number) pair should be globally unique to facilitate chain building.

SigAlgorithm
String (read-only)

Default Value: ""

Indicates the algorithm that was used by the CA to sign this certificate.

A signature algorithm typically combines hash and public key algorithms together, such as sha256WithRSAEncryption or ecdsa-with-SHA256.

Source
int (read-only)

Default Value: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

Subject
String (read-only)

Default Value: ""

The common name of the certificate holder, typically an individual's name, a URL, an e-mail address, or a company name. This is part of a larger set of credentials available via SubjectRDN.

SubjectAlternativeName
String

Default Value: ""

Returns or sets the value of the Subject Alternative Name extension of the certificate.

Subject alternative names are used to provide additional names that are impractical to store in the main SubjectRDN field. For example, it is often used to store all the domain names that a TLS certificate is authorized to protect.

The alternative names are provided as a list of CRLF-separated entries. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the element separator.

SubjectKeyID
byte[]

Default Value: ""

Contains a unique identifier of the certificate's cryptographic key.

Subject Key Identifier is a certificate extension which allows a specific public key to be associated with a certificate holder. Typically, subject key identifiers of CA certificates are recorded as respective CA key identifiers in the subordinate certificates that they issue, which facilitates chain building.

The SubjectKeyID and CAKeyID fields of self-signed certificates typically contain identical values, as in that specific case, the issuer and the subject are the same entity.

SubjectRDN
String

Default Value: ""

A list of Property=Value pairs that uniquely identify the certificate holder (subject).

Depending on the purpose of the certificate and the policies of the CA that issued it, the values included in the subject record may differ drastically and contain business or personal names, web URLs, email addresses, and other data.

Example: /C=US/O=Oranges and Apples, Inc./OU=Accounts Receivable/1.2.3.4.5=Value with unknown OID/CN=Margaret Watkins.

Valid
boolean (read-only)

Default Value: False

Indicates whether or not the signature over the certificate or the request is valid and matches the public key contained in the CA certificate/request.

ValidFrom
String

Default Value: ""

The time point at which the certificate becomes valid, in UTC.

ValidTo
String

Default Value: ""

The time point at which the certificate expires, in UTC.

Constructors

public Certificate( bytes,  startIndex,  count,  password);

Loads the X.509 certificate from a memory buffer. Bytes is a buffer containing the raw certificate data. StartIndex and Count specify the starting position and number of bytes to be read from the buffer, respectively. Password is a password encrypting the certificate.

public Certificate( certBytes,  certStartIndex,  certCount,  keyBytes,  keyStartIndex,  keyCount,  password);

Loads the X.509 certificate from a memory buffer.

CertBytes is a buffer containing the raw certificate data. CertStartIndex and CertCount specify the starting position and number of bytes to be read from the buffer, respectively.

KeyBytes is a buffer containing the private key data. KeyStartIndex and KeyCount specify the starting position and number of bytes to be read from the buffer, respectively.

Password is a password encrypting the certificate.

public Certificate( bytes,  startIndex,  count);

Loads the X.509 certificate from a memory buffer. Bytes is a buffer containing the raw certificate data. StartIndex and Count specify the starting position and number of bytes to be read from the buffer, respectively.

public Certificate( path,  password);

Loads the X.509 certificate from a file. Path specifies the full path to the file containing the certificate data. Password is a password encrypting the certificate.

public Certificate( certPath,  keyPath,  password);

Loads the X.509 certificate from a file. CertPath specifies the full path to the file containing the certificate data. KeyPath specifies the full path to the file containing the private key. Password is a password encrypting the certificate.

public Certificate( path);

Loads the X.509 certificate from a file. Path specifies the full path to the file containing the certificate data.

public Certificate( stream);

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data.

public Certificate( stream,  password);

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data. Password is a password encrypting the certificate.

public Certificate( certStream,  keyStream,  password);

Loads the X.509 certificate from a stream. CertStream is a stream containing the certificate data. KeyStream is a stream containing the private key. Password is a password encrypting the certificate.

public Certificate();

Creates a new object with default field values.

CRL Type

Represents a Certificate Revocation List.

Remarks

CRLs store information about revoked certificates, i.e., certificates that have been identified as invalid by their issuing certificate authority (CA) for any number of reasons.

Each CRL object lists certificates from a single CA and identifies them by their serial numbers. A CA may or may not publish a CRL, may publish several CRLs, or may publish the same CRL in multiple locations.

Unlike OCSP responses, CRLs only list certificates that have been revoked. They do not list certificates that are still valid.

The following fields are available:

Fields

Bytes
byte[] (read-only)

Default Value: ""

Returns the raw CRL data in DER format.

CAKeyID
byte[]

Default Value: ""

A unique identifier (fingerprint) of the CA certificate's private key, if present in the CRL.

EntryCount
int (read-only)

Default Value: 0

Returns the number of certificate status entries in the CRL.

Issuer
String (read-only)

Default Value: ""

The common name of the CRL issuer (CA), typically a company name.

IssuerRDN
String (read-only)

Default Value: ""

A collection of information, in the form of [OID, Value] pairs, uniquely identifying the CRL issuer.

Location
String (read-only)

Default Value: ""

The URL that the CRL was downloaded from.

NextUpdate
String

Default Value: ""

The planned time and date of the next version of this CRL to be published.

SigAlgorithm
String

Default Value: "0"

The public key algorithm that was used by the CA to sign this CRL.

Source
int (read-only)

Default Value: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

TBS
byte[] (read-only)

Default Value: ""

The to-be-signed part of the CRL (the CRL without the signature part).

ThisUpdate
String

Default Value: ""

The date and time at which this version of the CRL was published.

Constructors

public CRL( bytes,  startIndex,  count);

Creates a CRL object from a memory buffer. Bytes is a buffer containing raw (DER) CRL data, StartIndex and Count specify the starting position and the length of the CRL data in the buffer, respectively.

public CRL( location);

Creates a CRL object by downloading it from a remote location.

public CRL( stream);

Creates a CRL object from data contained in a stream.

public CRL();

Creates an empty CRL object.

ExternalCrypto Type

Specifies the parameters of external cryptographic calls.

Remarks

External cryptocalls are used in a Distributed Cryptography (DC) subsystem, which allows the delegation of security operations to the remote agent. For instance, it can be used to compute the signature value on the server, while retaining the client's private key locally.

The following fields are available:

Fields

AsyncDocumentID
String

Default Value: ""

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.

CustomParams
String

Default Value: ""

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

Data
String

Default Value: ""

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

ExternalHashCalculation
boolean

Default Value: False

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.

HashAlgorithm
String

Default Value: "SHA256"

Specifies the request's signature hash algorithm.

SB_HASH_ALGORITHM_SHA1SHA1
SB_HASH_ALGORITHM_SHA224SHA224
SB_HASH_ALGORITHM_SHA256SHA256
SB_HASH_ALGORITHM_SHA384SHA384
SB_HASH_ALGORITHM_SHA512SHA512
SB_HASH_ALGORITHM_MD2MD2
SB_HASH_ALGORITHM_MD4MD4
SB_HASH_ALGORITHM_MD5MD5
SB_HASH_ALGORITHM_RIPEMD160RIPEMD160
SB_HASH_ALGORITHM_CRC32CRC32
SB_HASH_ALGORITHM_SSL3SSL3
SB_HASH_ALGORITHM_GOST_R3411_1994GOST1994
SB_HASH_ALGORITHM_WHIRLPOOLWHIRLPOOL
SB_HASH_ALGORITHM_POLY1305POLY1305
SB_HASH_ALGORITHM_SHA3_224SHA3_224
SB_HASH_ALGORITHM_SHA3_256SHA3_256
SB_HASH_ALGORITHM_SHA3_384SHA3_384
SB_HASH_ALGORITHM_SHA3_512SHA3_512
SB_HASH_ALGORITHM_BLAKE2S_128BLAKE2S_128
SB_HASH_ALGORITHM_BLAKE2S_160BLAKE2S_160
SB_HASH_ALGORITHM_BLAKE2S_224BLAKE2S_224
SB_HASH_ALGORITHM_BLAKE2S_256BLAKE2S_256
SB_HASH_ALGORITHM_BLAKE2B_160BLAKE2B_160
SB_HASH_ALGORITHM_BLAKE2B_256BLAKE2B_256
SB_HASH_ALGORITHM_BLAKE2B_384BLAKE2B_384
SB_HASH_ALGORITHM_BLAKE2B_512BLAKE2B_512
SB_HASH_ALGORITHM_SHAKE_128SHAKE_128
SB_HASH_ALGORITHM_SHAKE_256SHAKE_256
SB_HASH_ALGORITHM_SHAKE_128_LENSHAKE_128_LEN
SB_HASH_ALGORITHM_SHAKE_256_LENSHAKE_256_LEN

KeyID
String

Default Value: ""

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 KeySecret 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";

KeySecret
String

Default Value: ""

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 KeyID topic.

Method
int

Default Value: 0

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

Available options:

asmdPKCS10
asmdPKCS71

Mode
int

Default Value: 0

Specifies the external cryptography mode.

Available options:

ecmDefaultThe default value (0)
ecmDisabledDo not use DC or external signing (1)
ecmGenericGeneric external signing with the OnExternalSign event (2)
ecmDCAuthDCAuth signing (3)
ecmDCAuthJSONDCAuth signing in JSON format (4)

PublicKeyAlgorithm
String

Default Value: ""

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

SB_CERT_ALGORITHM_ID_RSA_ENCRYPTIONrsaEncryption
SB_CERT_ALGORITHM_MD2_RSA_ENCRYPTIONmd2withRSAEncryption
SB_CERT_ALGORITHM_MD5_RSA_ENCRYPTIONmd5withRSAEncryption
SB_CERT_ALGORITHM_SHA1_RSA_ENCRYPTIONsha1withRSAEncryption
SB_CERT_ALGORITHM_ID_DSAid-dsa
SB_CERT_ALGORITHM_ID_DSA_SHA1id-dsa-with-sha1
SB_CERT_ALGORITHM_DH_PUBLICdhpublicnumber
SB_CERT_ALGORITHM_SHA224_RSA_ENCRYPTIONsha224WithRSAEncryption
SB_CERT_ALGORITHM_SHA256_RSA_ENCRYPTIONsha256WithRSAEncryption
SB_CERT_ALGORITHM_SHA384_RSA_ENCRYPTIONsha384WithRSAEncryption
SB_CERT_ALGORITHM_SHA512_RSA_ENCRYPTIONsha512WithRSAEncryption
SB_CERT_ALGORITHM_ID_RSAPSSid-RSASSA-PSS
SB_CERT_ALGORITHM_ID_RSAOAEPid-RSAES-OAEP
SB_CERT_ALGORITHM_RSASIGNATURE_RIPEMD160ripemd160withRSA
SB_CERT_ALGORITHM_ID_ELGAMALelGamal
SB_CERT_ALGORITHM_SHA1_ECDSAecdsa-with-SHA1
SB_CERT_ALGORITHM_RECOMMENDED_ECDSAecdsa-recommended
SB_CERT_ALGORITHM_SHA224_ECDSAecdsa-with-SHA224
SB_CERT_ALGORITHM_SHA256_ECDSAecdsa-with-SHA256
SB_CERT_ALGORITHM_SHA384_ECDSAecdsa-with-SHA384
SB_CERT_ALGORITHM_SHA512_ECDSAecdsa-with-SHA512
SB_CERT_ALGORITHM_ECid-ecPublicKey
SB_CERT_ALGORITHM_SPECIFIED_ECDSAecdsa-specified
SB_CERT_ALGORITHM_GOST_R3410_1994id-GostR3410-94
SB_CERT_ALGORITHM_GOST_R3410_2001id-GostR3410-2001
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_1994id-GostR3411-94-with-GostR3410-94
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_2001id-GostR3411-94-with-GostR3410-2001
SB_CERT_ALGORITHM_SHA1_ECDSA_PLAINecdsa-plain-SHA1
SB_CERT_ALGORITHM_SHA224_ECDSA_PLAINecdsa-plain-SHA224
SB_CERT_ALGORITHM_SHA256_ECDSA_PLAINecdsa-plain-SHA256
SB_CERT_ALGORITHM_SHA384_ECDSA_PLAINecdsa-plain-SHA384
SB_CERT_ALGORITHM_SHA512_ECDSA_PLAINecdsa-plain-SHA512
SB_CERT_ALGORITHM_RIPEMD160_ECDSA_PLAINecdsa-plain-RIPEMD160
SB_CERT_ALGORITHM_WHIRLPOOL_RSA_ENCRYPTIONwhirlpoolWithRSAEncryption
SB_CERT_ALGORITHM_ID_DSA_SHA224id-dsa-with-sha224
SB_CERT_ALGORITHM_ID_DSA_SHA256id-dsa-with-sha256
SB_CERT_ALGORITHM_SHA3_224_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-512
SB_CERT_ALGORITHM_SHA3_224_ECDSAid-ecdsa-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_ECDSAid-ecdsa-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_ECDSAid-ecdsa-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_ECDSAid-ecdsa-with-sha3-512
SB_CERT_ALGORITHM_SHA3_224_ECDSA_PLAINid-ecdsa-plain-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_ECDSA_PLAINid-ecdsa-plain-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_ECDSA_PLAINid-ecdsa-plain-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_ECDSA_PLAINid-ecdsa-plain-with-sha3-512
SB_CERT_ALGORITHM_ID_DSA_SHA3_224id-dsa-with-sha3-224
SB_CERT_ALGORITHM_ID_DSA_SHA3_256id-dsa-with-sha3-256
SB_CERT_ALGORITHM_BLAKE2S_128_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b512
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSAid-ecdsa-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSAid-ecdsa-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSAid-ecdsa-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSAid-ecdsa-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSAid-ecdsa-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSAid-ecdsa-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSAid-ecdsa-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSAid-ecdsa-with-blake2b512
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA_PLAINid-ecdsa-plain-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA_PLAINid-ecdsa-plain-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA_PLAINid-ecdsa-plain-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA_PLAINid-ecdsa-plain-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA_PLAINid-ecdsa-plain-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA_PLAINid-ecdsa-plain-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA_PLAINid-ecdsa-plain-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA_PLAINid-ecdsa-plain-with-blake2b512
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_224id-dsa-with-blake2s224
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_256id-dsa-with-blake2s256
SB_CERT_ALGORITHM_EDDSA_ED25519id-Ed25519
SB_CERT_ALGORITHM_EDDSA_ED448id-Ed448
SB_CERT_ALGORITHM_EDDSA_ED25519_PHid-Ed25519ph
SB_CERT_ALGORITHM_EDDSA_ED448_PHid-Ed448ph
SB_CERT_ALGORITHM_EDDSAid-EdDSA
SB_CERT_ALGORITHM_EDDSA_SIGNATUREid-EdDSA-sig

Constructors

public ExternalCrypto();

Creates a new ExternalCrypto object with default field values.

MailMessage Type

Represents an e-mail message.

Remarks

This object is a container for an e-mail message.

A message consists of a header and a body. The header, in turn, consists of several header fields. The names, syntax, and expected contents of the header fields are standardized.

The message body can contain anything you like (a message may not even have a body at all).

The following fields are available:

Fields

AttachmentCount
int (read-only)

Default Value: 0

Returns the number of attachments in this message.

Bcc
String

Default Value: ""

The contents of the BCC header field.

The BCC header field contains the addresses of secondary recipients of the message whose addresses are not to be revealed to other recipients of the message. Mail servers remove the BCC header when processing the message and use its value for dispatching the message only.

Cc
String

Default Value: ""

The value of the CC header field.

The CC field contains the addresses of secondary recipients of the message.

Comments
String

Default Value: ""

Contains additional information about the message body.

Date
String

Default Value: ""

The date and time when the message entered the mail delivery system.

This field contains the date and time at which the creator of the message posted the message to the mail delivery system.

The date is returned and accepted in UTC time zone.

DeliveryReceipt
boolean

Default Value: False

Enables delivery notification.

From
String

Default Value: ""

Contains the value of the From header field.

This field contains the address(es) of the message author(s). If the actual sender is not the author of the message, use Sender to specify the sender separately.

HtmlText
String

Default Value: ""

The HTML version of the message.

ID
String

Default Value: ""

The contents of the Message-ID header field.

This field contains a unique identifier that refers to a particular version of this message.

InReplyTo
String

Default Value: ""

The value of the In-Reply-To header field.

A reply message should have the "In-Reply-To:" header field which may be used to identify the message (or messages) to which the new message is a reply.

Keywords
String

Default Value: ""

The value of the Keywords header field.

This field can be used to add some important words and phrases that might be useful for the recipient.

Mailer
String (read-only)

Default Value: ""

The name of the software that was used to send the message.

PlainText
String

Default Value: ""

The plain text version of the message.

Priority
int

Default Value: 2

Specifies the message priority.

Available options:

mpLowest0
mpLow1
mpNormal2
mpHigh3
mpHighest4

ReadReceipt
boolean

Default Value: False

Enables a read notification.

References
String

Default Value: ""

The value of the References header field.

A reply message should include a "References:" header field which may be used to identify the "conversation thread". If the initial message is a reply itself, the References of the reply contain combined content of its "References:", "InReplyTo:" and "MessageID:" fields, subject to their presence in the original message.

ReplyTo
String

Default Value: ""

The value of the Reply-To header field.

This field contains the addresses to which the replies to this message should be sent. This field is optional. If not specified, the replies must be sent to the addresses specified in the From field.

ReturnPath
String

Default Value: ""

The value of the Return-Path header field.

This field contains the address to which this message shall be returned in case of unsuccessful delivery.

Sender
String

Default Value: ""

The value of the Sender header field.

This field specifies the mailbox of the agent responsible for the actual transmission of this message. If the originator of the message can be indicated by a single mailbox and both the author and the transmitter are identical, the "Sender:" field is deemed excessive and should not be used.

SendTo
String

Default Value: ""

The value of the To header field.

This field specifies the address(es) of the primary recipient(s) of the message.

Subject
String

Default Value: ""

Contains the subject field of this message.

Constructors

public MailMessage();

Creates a new empty mail message object.

OCSPResponse Type

Represents a single OCSP response originating from an OCSP responder.

Remarks

OCSP is a protocol that allows verification of certificate status in real-time, and is an alternative to Certificate Revocation Lists (CRLs).

An OCSP response is a snapshot of the certificate status at a given time.

The following fields are available:

Fields

Bytes
byte[] (read-only)

Default Value: ""

A buffer containing the raw OCSP response data.

EntryCount
int (read-only)

Default Value: 0

The number of SingleResponse elements contained in this OCSP response. Each SingleResponse element corresponds to a certificate status.

Issuer
String (read-only)

Default Value: ""

Indicates the issuer of this response (a CA or its authorized representative).

IssuerRDN
String (read-only)

Default Value: ""

Indicates the RDN of the issuer of this response (a CA or its authorized representative).

Location
String (read-only)

Default Value: ""

The location of the OCSP responder.

ProducedAt
String

Default Value: ""

Specifies the time when the response was produced, in UTC.

SigAlgorithm
String

Default Value: "0"

The public key algorithm that was used by the CA to sign this OCSP response.

Source
int (read-only)

Default Value: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

Constructors

public OCSPResponse( bytes,  startIndex,  count);

Initializes the response from a memory buffer. Bytes is a buffer containing raw OCSP response data, StartIndex and Count specify the starting position and the number of bytes to be read from this buffer.

public OCSPResponse( location);

Downloads an OCSP response from a remote location.

public OCSPResponse( stream);

Initializes the response with the data from a stream.

public OCSPResponse();

Creates an empty OCSP response object.

ProxySettings Type

A container for proxy server settings.

Remarks

This type exposes a collection of properties for tuning up the proxy server configuration.

The following fields are available:

Fields

Address
String

Default Value: ""

The IP address of the proxy server.

Authentication
int

Default Value: 0

The authentication type used by the proxy server.

patNoAuthentication0
patBasic1
patDigest2
patNTLM3

Password
String

Default Value: ""

The password to authenticate to the proxy server.

Port
int

Default Value: 0

The port on the proxy server to connect to.

ProxyType
int

Default Value: 0

The type of the proxy server.

cptNone0
cptSocks41
cptSocks52
cptWebTunnel3
cptHTTP4

RequestHeaders
String

Default Value: ""

Contains HTTP request headers for WebTunnel and HTTP proxy.

ResponseBody
String

Default Value: ""

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

ResponseHeaders
String

Default Value: ""

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

UseIPv6
boolean

Default Value: False

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

Username
String

Default Value: ""

Specifies the username credential for proxy authentication.

Constructors

public ProxySettings();

Creates a new ProxySettings object.

SMTPServerInfo Type

Describes the SMTP server's capabilities.

Remarks

Check this object to learn about the SMTP server's technical capabilities.

The following fields are available:

Fields

Available
boolean (read-only)

Default Value: False

Specifies whether server extensions are available.

Features
long (read-only)

Default Value: 0

Returns the list of capabilities supported by the server.

This value is bit mask of the following values:

smtpAuthLoginSupported0x0001Indicates whether the SMTP server supports LOGIN authentication method.

smtpAuthPlainSupported0x0002Indicates whether the SMTP server supports PLAIN authentication method.

smtpBinarySupported0x0004Indicates whether the SMTP server supports the binary sending mode.

smtpChunkingSupported0x0008Indicates whether the SMTP server supports message chunking.

smtpDsnSupported0x0010Indicates whether the SMTP server supports Delivery Status Notifications.

smtpSaslSupported0x0020Indicates whether the SMTP server supports SASL authentication.

smtpSizeSupported0x0040Indicates whether the SMTP server supports the SIZE service extension. See MaxMessageSize property for the message size limit.

smtpStatusCodesSupported0x0080Indicates whether the SMTP server supports status codes.

MaxMessageSize
int (read-only)

Default Value: 0

Returns the maximum size of a message in bytes which the server can accept.

SupportedAuths
String (read-only)

Default Value: ""

Contains a comma-separated list of the authentication methods supported by the server.

Use this value to setup the Authentications config property if needed.

SocketSettings Type

A container for the socket settings.

Remarks

This type is a container for socket-layer parameters.

The following fields are available:

Fields

DNSMode
int

Default Value: 0

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

dmAuto0
dmPlatform1
dmOwn2
dmOwnSecure3

DNSPort
int

Default Value: 0

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

DNSQueryTimeout
int

Default Value: 0

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

DNSServers
String

Default Value: ""

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

DNSTotalTimeout
int

Default Value: 0

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

IncomingSpeedLimit
int

Default Value: 0

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

LocalAddress
String

Default Value: ""

The local network interface to bind the socket to.

LocalPort
int

Default Value: 0

The local port number to bind the socket to.

OutgoingSpeedLimit
int

Default Value: 0

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

Timeout
int

Default Value: 60000

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).

UseIPv6
boolean

Default Value: False

Enables or disables IP protocol version 6.

Constructors

public SocketSettings();

Creates a new SocketSettings object.

TLSConnectionInfo Type

Contains information about a network connection.

Remarks

Use this property to check various details of the network connection. These include the total amounts of data transferred, the availability of TLS, and its parameters.

The following fields are available:

Fields

AEADCipher
boolean (read-only)

Default Value: False

Indicates whether the encryption algorithm used is an AEAD cipher.

ChainValidationDetails
int (read-only)

Default Value: 0

The details of a certificate chain validation outcome. They may often suggest the reasons that contributed to the overall validation result.

Returns a bit mask of the following options:

cvrBadData0x0001One or more certificates in the validation path are malformed

cvrRevoked0x0002One or more certificates are revoked

cvrNotYetValid0x0004One or more certificates are not yet valid

cvrExpired0x0008One or more certificates are expired

cvrInvalidSignature0x0010A certificate contains a non-valid digital signature

cvrUnknownCA0x0020A CA certificate for one or more certificates has not been found (chain incomplete)

cvrCAUnauthorized0x0040One of the CA certificates are not authorized to act as CA

cvrCRLNotVerified0x0080One or more CRLs could not be verified

cvrOCSPNotVerified0x0100One or more OCSP responses could not be verified

cvrIdentityMismatch0x0200The identity protected by the certificate (a TLS endpoint or an e-mail addressee) does not match what is recorded in the certificate

cvrNoKeyUsage0x0400A mandatory key usage is not enabled in one of the chain certificates

cvrBlocked0x0800One or more certificates are blocked

cvrFailure0x1000General validation failure

cvrChainLoop0x2000Chain loop: one of the CA certificates recursively signs itself

cvrWeakAlgorithm0x4000A weak algorithm is used in one of certificates or revocation elements

cvrUserEnforced0x8000The chain was considered invalid following intervention from a user code

ChainValidationResult
int (read-only)

Default Value: 0

The outcome of a certificate chain validation routine.

Available options:

cvtValid0The chain is valid

cvtValidButUntrusted1The chain is valid, but the root certificate is not trusted

cvtInvalid2The chain is not valid (some of certificates are revoked, expired, or contain an invalid signature)

cvtCantBeEstablished3The validity of the chain cannot be established because of missing or unavailable validation information (certificates, CRLs, or OCSP responses)

Use the ValidationLog property to access the detailed validation log.

Ciphersuite
String (read-only)

Default Value: ""

The cipher suite employed by this connection.

For TLS connections, this property returns the ciphersuite that was/is employed by the connection.

ClientAuthenticated
boolean (read-only)

Default Value: False

Specifies whether client authentication was performed during this connection.

ClientAuthRequested
boolean (read-only)

Default Value: False

Specifies whether client authentication was requested during this connection.

ConnectionEstablished
boolean (read-only)

Default Value: False

Indicates whether the connection has been established fully.

ConnectionID
byte[] (read-only)

Default Value: ""

The unique identifier assigned to this connection.

DigestAlgorithm
String (read-only)

Default Value: ""

The digest algorithm used in a TLS-enabled connection.

EncryptionAlgorithm
String (read-only)

Default Value: ""

The symmetric encryption algorithm used in a TLS-enabled connection.

Exportable
boolean (read-only)

Default Value: False

Indicates whether a TLS connection uses a reduced-strength exportable cipher.

ID
long (read-only)

Default Value: -1

The client connection's unique identifier. This value is used throughout to refer to a particular client connection.

KeyExchangeAlgorithm
String (read-only)

Default Value: ""

The key exchange algorithm used in a TLS-enabled connection.

KeyExchangeKeyBits
int (read-only)

Default Value: 0

The length of the key exchange key of a TLS-enabled connection.

NamedECCurve
String (read-only)

Default Value: ""

The elliptic curve used in this connection.

PFSCipher
boolean (read-only)

Default Value: False

Indicates whether the chosen ciphersuite provides perfect forward secrecy (PFS).

PreSharedIdentity
String

Default Value: ""

Specifies the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

PreSharedIdentityHint
String (read-only)

Default Value: ""

A hint professed by the server to help the client select the PSK identity to use.

PublicKeyBits
int (read-only)

Default Value: 0

The length of the public key.

RemoteAddress
String (read-only)

Default Value: ""

The client's IP address.

RemotePort
int (read-only)

Default Value: 0

The remote port of the client connection.

ResumedSession
boolean (read-only)

Default Value: False

Indicates whether a TLS-enabled connection was spawned from another TLS connection

SecureConnection
boolean (read-only)

Default Value: False

Indicates whether TLS or SSL is enabled for this connection.

ServerAuthenticated
boolean (read-only)

Default Value: False

Indicates whether server authentication was performed during a TLS-enabled connection.

SignatureAlgorithm
String (read-only)

Default Value: ""

The signature algorithm used in a TLS handshake.

SymmetricBlockSize
int (read-only)

Default Value: 0

The block size of the symmetric algorithm used.

SymmetricKeyBits
int (read-only)

Default Value: 0

The key length of the symmetric algorithm used.

TotalBytesReceived
long (read-only)

Default Value: 0

The total number of bytes received over this connection.

TotalBytesSent
long (read-only)

Default Value: 0

The total number of bytes sent over this connection.

ValidationLog
String (read-only)

Default Value: ""

Contains the server certificate's chain validation log. This information may be very useful in investigating chain validation failures.

Version
String (read-only)

Default Value: ""

Indicates the version of SSL/TLS protocol negotiated during this connection.

Constructors

public TLSConnectionInfo();

Creates a new TLSConnectionInfo object.

TLSSettings Type

A container for TLS connection settings.

Remarks

The TLS (Transport Layer Security) protocol provides security for information exchanged over insecure connections such as TCP/IP.

The following fields are available:

Fields

AutoValidateCertificates
boolean

Default Value: True

Specifies whether server-side TLS certificates should be validated automatically using internal validation rules.

BaseConfiguration
int

Default Value: 0

Selects the base configuration for the TLS settings. Several profiles are offered and tuned up for different purposes, such as high security or higher compatibility.

stpcDefault0
stpcCompatible1
stpcComprehensiveInsecure2
stpcHighlySecure3

Ciphersuites
String

Default Value: ""

A list of ciphersuites separated with commas or semicolons. Each ciphersuite in the list may be prefixed with a minus sign (-) to indicate that the ciphersuite should be disabled rather than enabled. Besides the specific ciphersuite modifiers, this property supports the all (and -all) aliases, allowing all ciphersuites to be blanketly enabled or disabled at once.

Note: the list of ciphersuites provided to this property alters the baseline list of ciphersuites as defined by BaseConfiguration. Remember to start your ciphersuite string with -all; if you need to only enable a specific fixed set of ciphersuites. The list of supported ciphersuites is provided below:

  • NULL_NULL_NULL
  • RSA_NULL_MD5
  • RSA_NULL_SHA
  • RSA_RC4_MD5
  • RSA_RC4_SHA
  • RSA_RC2_MD5
  • RSA_IDEA_MD5
  • RSA_IDEA_SHA
  • RSA_DES_MD5
  • RSA_DES_SHA
  • RSA_3DES_MD5
  • RSA_3DES_SHA
  • RSA_AES128_SHA
  • RSA_AES256_SHA
  • DH_DSS_DES_SHA
  • DH_DSS_3DES_SHA
  • DH_DSS_AES128_SHA
  • DH_DSS_AES256_SHA
  • DH_RSA_DES_SHA
  • DH_RSA_3DES_SHA
  • DH_RSA_AES128_SHA
  • DH_RSA_AES256_SHA
  • DHE_DSS_DES_SHA
  • DHE_DSS_3DES_SHA
  • DHE_DSS_AES128_SHA
  • DHE_DSS_AES256_SHA
  • DHE_RSA_DES_SHA
  • DHE_RSA_3DES_SHA
  • DHE_RSA_AES128_SHA
  • DHE_RSA_AES256_SHA
  • DH_ANON_RC4_MD5
  • DH_ANON_DES_SHA
  • DH_ANON_3DES_SHA
  • DH_ANON_AES128_SHA
  • DH_ANON_AES256_SHA
  • RSA_RC2_MD5_EXPORT
  • RSA_RC4_MD5_EXPORT
  • RSA_DES_SHA_EXPORT
  • DH_DSS_DES_SHA_EXPORT
  • DH_RSA_DES_SHA_EXPORT
  • DHE_DSS_DES_SHA_EXPORT
  • DHE_RSA_DES_SHA_EXPORT
  • DH_ANON_RC4_MD5_EXPORT
  • DH_ANON_DES_SHA_EXPORT
  • RSA_CAMELLIA128_SHA
  • DH_DSS_CAMELLIA128_SHA
  • DH_RSA_CAMELLIA128_SHA
  • DHE_DSS_CAMELLIA128_SHA
  • DHE_RSA_CAMELLIA128_SHA
  • DH_ANON_CAMELLIA128_SHA
  • RSA_CAMELLIA256_SHA
  • DH_DSS_CAMELLIA256_SHA
  • DH_RSA_CAMELLIA256_SHA
  • DHE_DSS_CAMELLIA256_SHA
  • DHE_RSA_CAMELLIA256_SHA
  • DH_ANON_CAMELLIA256_SHA
  • PSK_RC4_SHA
  • PSK_3DES_SHA
  • PSK_AES128_SHA
  • PSK_AES256_SHA
  • DHE_PSK_RC4_SHA
  • DHE_PSK_3DES_SHA
  • DHE_PSK_AES128_SHA
  • DHE_PSK_AES256_SHA
  • RSA_PSK_RC4_SHA
  • RSA_PSK_3DES_SHA
  • RSA_PSK_AES128_SHA
  • RSA_PSK_AES256_SHA
  • RSA_SEED_SHA
  • DH_DSS_SEED_SHA
  • DH_RSA_SEED_SHA
  • DHE_DSS_SEED_SHA
  • DHE_RSA_SEED_SHA
  • DH_ANON_SEED_SHA
  • SRP_SHA_3DES_SHA
  • SRP_SHA_RSA_3DES_SHA
  • SRP_SHA_DSS_3DES_SHA
  • SRP_SHA_AES128_SHA
  • SRP_SHA_RSA_AES128_SHA
  • SRP_SHA_DSS_AES128_SHA
  • SRP_SHA_AES256_SHA
  • SRP_SHA_RSA_AES256_SHA
  • SRP_SHA_DSS_AES256_SHA
  • ECDH_ECDSA_NULL_SHA
  • ECDH_ECDSA_RC4_SHA
  • ECDH_ECDSA_3DES_SHA
  • ECDH_ECDSA_AES128_SHA
  • ECDH_ECDSA_AES256_SHA
  • ECDHE_ECDSA_NULL_SHA
  • ECDHE_ECDSA_RC4_SHA
  • ECDHE_ECDSA_3DES_SHA
  • ECDHE_ECDSA_AES128_SHA
  • ECDHE_ECDSA_AES256_SHA
  • ECDH_RSA_NULL_SHA
  • ECDH_RSA_RC4_SHA
  • ECDH_RSA_3DES_SHA
  • ECDH_RSA_AES128_SHA
  • ECDH_RSA_AES256_SHA
  • ECDHE_RSA_NULL_SHA
  • ECDHE_RSA_RC4_SHA
  • ECDHE_RSA_3DES_SHA
  • ECDHE_RSA_AES128_SHA
  • ECDHE_RSA_AES256_SHA
  • ECDH_ANON_NULL_SHA
  • ECDH_ANON_RC4_SHA
  • ECDH_ANON_3DES_SHA
  • ECDH_ANON_AES128_SHA
  • ECDH_ANON_AES256_SHA
  • RSA_NULL_SHA256
  • RSA_AES128_SHA256
  • RSA_AES256_SHA256
  • DH_DSS_AES128_SHA256
  • DH_RSA_AES128_SHA256
  • DHE_DSS_AES128_SHA256
  • DHE_RSA_AES128_SHA256
  • DH_DSS_AES256_SHA256
  • DH_RSA_AES256_SHA256
  • DHE_DSS_AES256_SHA256
  • DHE_RSA_AES256_SHA256
  • DH_ANON_AES128_SHA256
  • DH_ANON_AES256_SHA256
  • RSA_AES128_GCM_SHA256
  • RSA_AES256_GCM_SHA384
  • DHE_RSA_AES128_GCM_SHA256
  • DHE_RSA_AES256_GCM_SHA384
  • DH_RSA_AES128_GCM_SHA256
  • DH_RSA_AES256_GCM_SHA384
  • DHE_DSS_AES128_GCM_SHA256
  • DHE_DSS_AES256_GCM_SHA384
  • DH_DSS_AES128_GCM_SHA256
  • DH_DSS_AES256_GCM_SHA384
  • DH_ANON_AES128_GCM_SHA256
  • DH_ANON_AES256_GCM_SHA384
  • ECDHE_ECDSA_AES128_SHA256
  • ECDHE_ECDSA_AES256_SHA384
  • ECDH_ECDSA_AES128_SHA256
  • ECDH_ECDSA_AES256_SHA384
  • ECDHE_RSA_AES128_SHA256
  • ECDHE_RSA_AES256_SHA384
  • ECDH_RSA_AES128_SHA256
  • ECDH_RSA_AES256_SHA384
  • ECDHE_ECDSA_AES128_GCM_SHA256
  • ECDHE_ECDSA_AES256_GCM_SHA384
  • ECDH_ECDSA_AES128_GCM_SHA256
  • ECDH_ECDSA_AES256_GCM_SHA384
  • ECDHE_RSA_AES128_GCM_SHA256
  • ECDHE_RSA_AES256_GCM_SHA384
  • ECDH_RSA_AES128_GCM_SHA256
  • ECDH_RSA_AES256_GCM_SHA384
  • PSK_AES128_GCM_SHA256
  • PSK_AES256_GCM_SHA384
  • DHE_PSK_AES128_GCM_SHA256
  • DHE_PSK_AES256_GCM_SHA384
  • RSA_PSK_AES128_GCM_SHA256
  • RSA_PSK_AES256_GCM_SHA384
  • PSK_AES128_SHA256
  • PSK_AES256_SHA384
  • PSK_NULL_SHA256
  • PSK_NULL_SHA384
  • DHE_PSK_AES128_SHA256
  • DHE_PSK_AES256_SHA384
  • DHE_PSK_NULL_SHA256
  • DHE_PSK_NULL_SHA384
  • RSA_PSK_AES128_SHA256
  • RSA_PSK_AES256_SHA384
  • RSA_PSK_NULL_SHA256
  • RSA_PSK_NULL_SHA384
  • RSA_CAMELLIA128_SHA256
  • DH_DSS_CAMELLIA128_SHA256
  • DH_RSA_CAMELLIA128_SHA256
  • DHE_DSS_CAMELLIA128_SHA256
  • DHE_RSA_CAMELLIA128_SHA256
  • DH_ANON_CAMELLIA128_SHA256
  • RSA_CAMELLIA256_SHA256
  • DH_DSS_CAMELLIA256_SHA256
  • DH_RSA_CAMELLIA256_SHA256
  • DHE_DSS_CAMELLIA256_SHA256
  • DHE_RSA_CAMELLIA256_SHA256
  • DH_ANON_CAMELLIA256_SHA256
  • ECDHE_ECDSA_CAMELLIA128_SHA256
  • ECDHE_ECDSA_CAMELLIA256_SHA384
  • ECDH_ECDSA_CAMELLIA128_SHA256
  • ECDH_ECDSA_CAMELLIA256_SHA384
  • ECDHE_RSA_CAMELLIA128_SHA256
  • ECDHE_RSA_CAMELLIA256_SHA384
  • ECDH_RSA_CAMELLIA128_SHA256
  • ECDH_RSA_CAMELLIA256_SHA384
  • RSA_CAMELLIA128_GCM_SHA256
  • RSA_CAMELLIA256_GCM_SHA384
  • DHE_RSA_CAMELLIA128_GCM_SHA256
  • DHE_RSA_CAMELLIA256_GCM_SHA384
  • DH_RSA_CAMELLIA128_GCM_SHA256
  • DH_RSA_CAMELLIA256_GCM_SHA384
  • DHE_DSS_CAMELLIA128_GCM_SHA256
  • DHE_DSS_CAMELLIA256_GCM_SHA384
  • DH_DSS_CAMELLIA128_GCM_SHA256
  • DH_DSS_CAMELLIA256_GCM_SHA384
  • DH_anon_CAMELLIA128_GCM_SHA256
  • DH_anon_CAMELLIA256_GCM_SHA384
  • ECDHE_ECDSA_CAMELLIA128_GCM_SHA256
  • ECDHE_ECDSA_CAMELLIA256_GCM_SHA384
  • ECDH_ECDSA_CAMELLIA128_GCM_SHA256
  • ECDH_ECDSA_CAMELLIA256_GCM_SHA384
  • ECDHE_RSA_CAMELLIA128_GCM_SHA256
  • ECDHE_RSA_CAMELLIA256_GCM_SHA384
  • ECDH_RSA_CAMELLIA128_GCM_SHA256
  • ECDH_RSA_CAMELLIA256_GCM_SHA384
  • PSK_CAMELLIA128_GCM_SHA256
  • PSK_CAMELLIA256_GCM_SHA384
  • DHE_PSK_CAMELLIA128_GCM_SHA256
  • DHE_PSK_CAMELLIA256_GCM_SHA384
  • RSA_PSK_CAMELLIA128_GCM_SHA256
  • RSA_PSK_CAMELLIA256_GCM_SHA384
  • PSK_CAMELLIA128_SHA256
  • PSK_CAMELLIA256_SHA384
  • DHE_PSK_CAMELLIA128_SHA256
  • DHE_PSK_CAMELLIA256_SHA384
  • RSA_PSK_CAMELLIA128_SHA256
  • RSA_PSK_CAMELLIA256_SHA384
  • ECDHE_PSK_CAMELLIA128_SHA256
  • ECDHE_PSK_CAMELLIA256_SHA384
  • ECDHE_PSK_RC4_SHA
  • ECDHE_PSK_3DES_SHA
  • ECDHE_PSK_AES128_SHA
  • ECDHE_PSK_AES256_SHA
  • ECDHE_PSK_AES128_SHA256
  • ECDHE_PSK_AES256_SHA384
  • ECDHE_PSK_NULL_SHA
  • ECDHE_PSK_NULL_SHA256
  • ECDHE_PSK_NULL_SHA384
  • ECDHE_RSA_CHACHA20_POLY1305_SHA256
  • ECDHE_ECDSA_CHACHA20_POLY1305_SHA256
  • DHE_RSA_CHACHA20_POLY1305_SHA256
  • PSK_CHACHA20_POLY1305_SHA256
  • ECDHE_PSK_CHACHA20_POLY1305_SHA256
  • DHE_PSK_CHACHA20_POLY1305_SHA256
  • RSA_PSK_CHACHA20_POLY1305_SHA256
  • AES128_GCM_SHA256
  • AES256_GCM_SHA384
  • CHACHA20_POLY1305_SHA256
  • AES128_CCM_SHA256
  • AES128_CCM8_SHA256

ClientAuth
int

Default Value: 0

Enables or disables certificate-based client authentication.

Set this property to true to tune up the client authentication type:

ccatNoAuth0
ccatRequestCert1
ccatRequireCert2

ECCurves
String

Default Value: ""

Defines the elliptic curves to enable.

Extensions
String

Default Value: ""

Provides access to TLS extensions.

ForceResumeIfDestinationChanges
boolean

Default Value: False

Whether to force TLS session resumption when the destination address changes.

PreSharedIdentity
String

Default Value: ""

Defines the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

PreSharedKey
String

Default Value: ""

Contains the pre-shared key for the PSK (Pre-Shared Key) key-exchange mechanism, encoded with base16.

PreSharedKeyCiphersuite
String

Default Value: ""

Defines the ciphersuite used for PSK (Pre-Shared Key) negotiation.

RenegotiationAttackPreventionMode
int

Default Value: 2

Selects the renegotiation attack prevention mechanism.

The following options are available:

crapmCompatible0TLS 1.0 and 1.1 compatibility mode (renegotiation indication extension is disabled).
crapmStrict1Renegotiation attack prevention is enabled and enforced.
crapmAuto2Automatically choose whether to enable or disable renegotiation attack prevention.

RevocationCheck
int

Default Value: 1

Specifies the kind(s) of revocation check to perform.

Revocation checking is necessary to ensure the integrity of the chain and obtain up-to-date certificate validity and trustworthiness information.

crcNone0No revocation checking.
crcAuto1Automatic mode selection. Currently this maps to crcAnyOCSPOrCRL, but it may change in the future.
crcAllCRL2All provided CRL endpoints will be checked, and all checks must succeed.
crcAllOCSP3All provided OCSP endpoints will be checked, and all checks must succeed.
crcAllCRLAndOCSP4All provided CRL and OCSP endpoints will be checked, and all checks must succeed.
crcAnyCRL5All provided CRL endpoints will be checked, and at least one check must succeed.
crcAnyOCSP6All provided OCSP endpoints will be checked, and at least one check must succeed.
crcAnyCRLOrOCSP7All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. CRL endpoints are checked first.
crcAnyOCSPOrCRL8All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. OCSP endpoints are checked first.

This setting controls the way the revocation checks are performed for every certificate in the chain. Typically certificates come with two types of revocation information sources: CRL (certificate revocation lists) and OCSP responders. CRLs are static objects periodically published by the CA at some online location. OCSP responders are active online services maintained by the CA that can provide up-to-date information on certificate statuses in near real time.

There are some conceptual differences between the two. CRLs are normally larger in size. Their use involves some latency because there is normally some delay between the time when a certificate was revoked and the time the subsequent CRL mentioning that is published. The benefits of CRL is that the same object can provide statuses for all certificates issued by a particular CA, and that the whole technology is much simpler than OCSP (and thus is supported by more CAs).

This setting lets you adjust the validation course by including or excluding certain types of revocation sources from the validation process. The crcAnyOCSPOrCRL setting (give preference to the faster OCSP route and only demand one source to succeed) is a good choice for most typical validation environments. The "crcAll*" modes are much stricter, and may be used in scenarios where bulletproof validity information is essential.

Note: If no CRL or OCSP endpoints are provided by the CA, the revocation check will be considered successful. This is because the CA chose not to supply revocation information for its certificates, meaning they are considered irrevocable.

Note: Within each of the above settings, if any retrieved CRL or OCSP response indicates that the certificate has been revoked, the revocation check fails.

SSLOptions
int

Default Value: 16

Various SSL (TLS) protocol options, set of

cssloExpectShutdownMessage0x001Wait for the close-notify message when shutting down the connection

cssloOpenSSLDTLSWorkaround0x002(DEPRECATED) Use a DTLS version workaround when talking to very old OpenSSL versions

cssloDisableKexLengthAlignment0x004Do not align the client-side PMS by the RSA modulus size. It is unlikely that you will ever need to adjust it.

cssloForceUseOfClientCertHashAlg0x008Enforce the use of the client certificate hash algorithm. It is unlikely that you will ever need to adjust it.

cssloAutoAddServerNameExtension0x010Automatically add the server name extension when known

cssloAcceptTrustedSRPPrimesOnly0x020Accept trusted SRP primes only

cssloDisableSignatureAlgorithmsExtension0x040Disable (do not send) the signature algorithms extension. It is unlikely that you will ever need to adjust it.

cssloIntolerateHigherProtocolVersions0x080(server option) Do not allow fallback from TLS versions higher than currently enabled

cssloStickToPrefCertHashAlg0x100Stick to preferred certificate hash algorithms

cssloNoImplicitTLS12Fallback0x200Disable implicit TLS 1.3 to 1.2 fallbacks

cssloUseHandshakeBatches0x400Send the handshake message as large batches rather than individually

TLSMode
int

Default Value: 0

Specifies the TLS mode to use.

smDefault0
smNoTLS1Do not use TLS
smExplicitTLS2Connect to the server without any encryption and then request an SSL session.
smImplicitTLS3Connect to the specified port, and establish the SSL session at once.
smMixedTLS4Connect to the specified port, and establish the SSL session at once, but allow plain data.

UseExtendedMasterSecret
boolean

Default Value: False

Enables the Extended Master Secret Extension, as defined in RFC 7627.

UseSessionResumption
boolean

Default Value: False

Enables or disables the TLS session resumption capability.

Versions
int

Default Value: 16

The SSL/TLS versions to enable by default.

csbSSL20x01SSL 2

csbSSL30x02SSL 3

csbTLS10x04TLS 1.0

csbTLS110x08TLS 1.1

csbTLS120x10TLS 1.2

csbTLS130x20TLS 1.3

Constructors

public TLSSettings();

Creates a new TLSSettings object.

Config Settings (SMTPClient Class)

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.

SMTPClient Config Settings

Authentications:   Specifies enabled authentication methods and their priorities.

Use this setting to enable or disable authentication methods and specify their priorities. The setting contains a comma-separated list of authentication methods. The first method in the list has the highest priority, and so on. The class will use the first method from the list which is supported by the server.

Supported methods: PLAIN, LOGIN, CRAM-MD5, DIGEST-MD5, NTLM, GSSAPI, XOAUTH2, SCRAM-SHA-1, SCRAM-SHA-256

Default value: SCRAM-SHA-256,SCRAM-SHA-1,DIGEST-MD5,CRAM-MD5,LOGIN,PLAIN

BinaryChunkSize:   Specifies the size of chunks to use for dividing outgoing messages in binary mode.

Size of the chunks into which all messages are divided for sending in binary mode.

BinaryMode:   Specifies whether binary mode is allowed for sending.

If the binary mode is allowed and SMTP server also supports this extension, the messages are sent in binary mode. In other cases messages are sent as text.

DSNOptions:   Specifies the mode for Delivery Status Notifications (DSN).

Use this setting to set the delivery status(es) the SMTP server should report about. The setting contains a comma-separated list of DSN options.

Supported values: SUCCESS, FAILURE, DELAY

Default value: disabled (empty string)

DSNReturnInfo:   Specifies notification return info for DSN.

Use this setting to instruct the SMTP server whether it should return a complete original message or only its headers in the notification.

Supported values: HEADERS, FULL

Default value: HEADERS

ForceLogin:   Forces the class to login to the server.

If set to true, the class authencates on the server even if the server reports no supported authentication mechanisms.

IgnoreSystemTrust:   Whether trusted Windows Certificate Stores should be treated as trusted.

Specifies whether, during chain validation, the class should respect the trust to CA certificates as configured in the operating system. In Windows this effectively defines whether the class should trust the certificates residing in the Trusted Root Certification Authorities store.

If IgnoreSystemTrust is True, certificates residing in the trusted root store are treated as if they are known, rather than trusted. Only certificates provided via other means (such as the TrustedCertificates property) are considered trusted.

RemoveBCC:   Specifies if BCC header fields should be removed from messages.

Set the value to false to keep BCC fields in messages when sending. By default, the value is true, i.e. BCC fields are removed.

SendBufferSize:   Size of send buffer in bytes.

The size of blocks used to send data to the server.

SessionLogDetails:   Specifies whether login credentials should be written to the session log.

Use this setting to configure the details written to SessionLog. Possible values are:

defaultLogin credentials are not logged.
fullLogin credentials appeare in the SessionLog.
noneNo SessionLog is created.
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:

noneNo static DNS rules (default)
localLocal static DNS rules
globalGlobal 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.

TempPath:   Path for storing temporary files.

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

TLSExtensions:   TBD.

TBD

TLSPeerExtensions:   TBD.

TBD

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).

TolerateMinorChainIssues:   Whether to tolerate minor chain issues.

This parameter controls whether the chain validator should tolerate minor technical issues when validating the chain. Those are:

  • CA, revocation source, TLS key usage requirements are not mandated
  • Violation of OCSP issuer requirements are ignored
  • The AuthorityKeyID extension in CRL- and certificate-issuing CAs are ignored (helps with incorrectly renewed certificates)
  • Basic constraints and name constraints of CA certificates are ignored
  • Some weaker algorithms are tolerated
UseMicrosoftCTL:   Enables or disables the automatic use of the Microsoft online certificate trust list.

Enable this property to make the chain validation module automatically look up missing CA certificates in the public Windows Update repository.

UseSystemCertificates:   Enables or disables the use of the system certificates.

Use this property to tell the chain validation module to automatically look up missing CA certificates in the system certificates. In many cases it is beneficial to switch this property on, as the operating system certificate configuration provides a representative trust framework.

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:

offNo caching (default)
localLocal caching
globalGlobal 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:

fileFile
consoleConsole
systemlogSystem Log (supported for Android only)
debuggerDebugger (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:

timeCurrent time
levelLevel
packagePackage name
moduleModule name
classClass name
methodMethod name
threadidThread Id
contenttypeContent type
contentContent
allAll 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-packageExclude a package specified in the value
exclude-moduleExclude a module specified in the value
exclude-classExclude a class specified in the value
exclude-methodExclude a method specified in the value
include-packageInclude a package specified in the value
include-moduleInclude a module specified in the value
include-classInclude a class specified in the value
include-methodInclude 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:

noneNo flush (caching only)
immediateImmediate flush (real-time logging)
maxcountFlush 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:

noneNone (by default)
fatalSevere errors that cause premature termination.
errorOther runtime errors or unexpected conditions.
warningUse of deprecated APIs, poor use of API, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".
infoInteresting runtime events (startup/shutdown).
debugDetailed information on flow of through the system.
traceMore 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:

noneNo rotation
deleteolderDelete older entries from the cache upon reaching LogMaxEventCount
keepolderKeep 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.

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:

noneNo static DNS rules (default)
localLocal static DNS rules
globalGlobal 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).

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).

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.

Trappable Errors (SMTPClient Class)

SMTPClient 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)