Improves SSH and TLS Chacha20/Poly1305 implementation and adds support for Sensitivity flag in EWS.
Features
- All: Changed release naming scheme ('R5.1' instead of '2020 R5.1').
- EWS: Added Ews.Settings.HttpHeaders property to make it possible to specify custom HTTP headers.
- EWS: Added EwsMessageInfo.Sensitivity property.
- Networking: More meaningful exception is throw when attempting to use HTTP CONNECT proxy with NTLM authentication on platforms that don't support it.
- Networking: Optimized timeout infrastructure in ProxySocket.Connect.
- TLS Core: Added VerifyMessage signature algorithm logging in TLS 1.3.
- TLS Core: Close/Dispose method called on TLS 1.3 socket ensures that all outstanding IO operations are canceled before the control is returned to the caller.
- TLS Core: Synchronous methods on TlsSocket wrap TaskCanceledException to TlsException.
- Cryptography: Enhanced implicit operator for conversion of Certificate->X509Certificate2 to retain private keys on non-Microsoft Windows platforms as well.
- Cryptography: Optimized memory usage in symmetric encryption transformations based on Windows CNG API.
- Cryptography: Substantial speed-up of Chacha20/Poly1305 (used in SSH and TLS). Utilizing AVX2 or Advanced NEON SIMD on Microsoft .NET 5.0 (if available).
- Common: Accelerated common byte array operations in .NET 5.0 on devices with AVX2 support.