Rebex .NET components R6.8: Optimized CPU and memory usage in TLS 1.3, faster ChaCha20 on SSE2

Optimized CPU and memory usage in TLS 1.3

Rebex TLS 1.3 core has been further optimized on all supported platforms.

SSE2 implementation of ChaCha20

Last year, we introduced a very fast AVX2 implementation of ChaCha20 encryption cipher. However, some older or mobile CPUs still lack AVX2 support, and this is where the new SSE2 implementation will become useful and improved performance of ChaCha20/Poly1305 in TLS and SSH. (Just like AVX2, the new SSE2 implementation is only available on .NET Core 3.1 and .NET 5/6.)

And more...

For a detailed list of changes, see the release history.