GitHub - h2o/picotls: TLS 1.3 implementation in C (master supports RFC8446 as well as draft-26, -27, -28)Picotls is a TLS 1.3 (RFC 8446) protocol stack written in C, with the following features: support for three crypto engines "OpenSSL" backend using libcrypto for crypto and X.509 operations "minicrypto" backend using cifra for most crypto and micro-ecc for secp256r1 "fusion" AES-GCM engine, optimized for QUIC and other protocols that use short AEAD blocks libaegis for the AEGIS AEADs support for PS
