xchacha
There are 3 repositories under xchacha topic.
spcnvdr/xchacha20
A small C library for the XChaCha20 stream cipher
exc-jdbi/Chacha20-and-Poly1305
Shows how Chacha20 and Poly1305 works.
tom-auger/xchacha-dotnet
A .NET wrapper for the XChaCha APIs in the libsodium crypto library