Released: Apr 18, 2023

Updates in R6.12

Fixes

• SSH: Added workaround for an issue in 'srt SSH Server' that makes it reject RSA/SHA-2 public key authentication attempts.
• SSH: Fixed handling of SSH2 PUBLIC KEY quotation marks in SshPublicKey.
• SSH: Fixed handling of user name when performing single sign-on in .NET Core and .NET 5/6/7.
• TLS Core: Fixed client-side TLS cipher suite check and server-side TLS cipher selection.
• TLS Core: Fixed checking of selected elliptic curves.
• TLS Core: Fixed memory leak in server-side TLS session cache...

Released: Jan 31, 2023

Updates in R6.11

Features

• Common: Improved compatibility with Microsoft Windows 2000.

Fixes

• Networking: Comment is no longer ignored when loading SSH2 public key into SshPublicKey.
• SSH: Fixed occasional StackOverflowException in SSH tunnel code (thrown when a large batch of consecutive asynchronous IO operations completes synchronously).
• TLS Core: Fixed handling of missing close_notify message in TLS 1.2 or earlier.
• Cryptography: Fixed CRL retrieval for certificate with multiple CRL distribution endpoints...

Released: Dec 2, 2022

Updates in R6.10

Fixes

• SSH: Added workaround for an issue in Azure Blob Storage SFTP that makes it reject RSA/SHA-2 public key authentication attempts.
• TLS Core: Fixed TlsParameter.AcceptableAuthorities handling (can specify an empty list).
• Cryptography: Added workaround for broken X25519 implementation in early versions of Windows 10 (version 1507 and 1511).
• Common: Fixed Windows Extended Protection in 64-bit Windows applications.

Released: Nov 8, 2022

Updates in R6.9

Features

• Added support for Microsoft .NET 7 - This release adds a new set of binaries targeting .NET 7. It supports all .NET 7 platforms:
  • Microsoft Windows (x64, x86, ARM64).
  • Linux (x64, ARM32, ARM64).
  • Apple macOS (x64).
  • Android.
  • Apple tvOS.

Fixes

• Cryptography: Fixed SHA-2 support on pre-SP3 versions of Windows XP.

Released: Oct 25, 2022

Updates in R6.8

Features

• Networking: Improved handling of timeouts during TCP connections.
• TLS Core: Optimized TLS 1.3 core.
• TLS Core: Improved handling of invalid TLS 1.3 session tickets (PSKs).
• TLS Core: Reduced memory footprint and CPU usage of TLS 1.3.
• Cryptography: Added SSE2 implementation of ChaCha20 for Microsoft .NET 5.0 or higher.

Fixes

• SSH Shell: Fixed UseLargeBuffers a SetNoDelayForTunnelSockets usage in SSH tunnels.
• TLS Core: Fixed handling of incomplete TLS 1.3 records.

Released: Oct 5, 2022

Updates in R6.7

Fixes

• All: This release is now properly code-signed again. TSA certificate validity was too short in R6.6 due to DigiCert's mistake.
• SSH: Added workaround for SSH servers that claim to prefer 'ssh-rsa' for client public key authentication.

Released: Sep 16, 2022

Updates in R6.6

Features

• SSH: Added new constructors to SshPrivateKey/SshPublicKey classes that accept AsymmetricKeyAlgorithm.
• SSH: Added support for ECDSA to SshPrivateKey(AsymmetricAlgorithm) constructor (on Microsoft .NET Core 3.1 or higher).
• TLS Core: Added support for Microsoft Windows Extended Protection (only available on Windows) to SMTP, IMAP, POP3, EWS, HTTPS and WebSocket libraries. Customers using on-premise Exchange Servers or IIS servers with 'Integrated Windows authentication' should consider...

Released: Jul 15, 2022

Updates in R6.5

Features

• SSH Shell: Improved key-only variant of Login method when the server requests further authentication and AuthenticationRequest event has been registered.
• SSH: Added support for 'server-sig-algs' SSH extension (RFC 8332) and for SSH extension negotiation (RFC 8308).
• SSH: Improved logging of 'partial success' authentication responses.
• TLS Core: Added support for TLS extended master secret extension (RFC 7627).
• Common: Improved internal asynchronous infrastructure for old platforms.

Fixes...

Released: May 25, 2022

Updates in R6.4

Features

• Added support for Microsoft .NET 6.0 on Android and Apple iOS.
• SSH: Optimized AEAD ciphers in SSH - ChaCha20/Poly1305 and AES/GCM ciphers have been slightly optimized.
• TLS Core: Optimized AEAD ciphers in TLS - ChaCha20/Poly1305 and AES/GCM ciphers have been slightly optimized.
• TLS Core: Optimized CPU usage in TLS 1.3 data flow.
• TLS Core: Optimized scenarios when the remote party requires TLS 1.2 (or lower TLS version) and TLS 1.3 is enabled.
• TLS Core: Optimized TLS 1.3 key derivation...

Released: Mar 28, 2022

Updates in R6.3

Features

• Networking: Added ProxySocket.Bind(Socket) protected method to allow for more customization.
• SSH: Improved workaround for very old versions of Bitvise server that don't properly handle SSH channel closing.
• TLS Core: Added TlsSocket.CloseAsync method (alias for DisposeAsync method).
• TLS Core: Improved protocol mismatch detection.
• TLS Core: Optimized asynchronous Send/Receive operation in TLS 1.3.
• Cryptography: Improved Poly1305 internals.
• Cryptography: Slightly optimized encrypt/decrypt...