Common implementation of TLS/SSL protocol

• OpenSSL: https://www.openssl.org/
• BoringSSL: https://boringssl.googlesource.com/boringssl/
• NSS: https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS
• LibreSSL: https://www.libressl.org/
• GnuTLS: https://www.gnutls.org/
• Kernel TLS offload: https://docs.kernel.org/networking/tls.html
• https://www.bouncycastle.org/
• https://github.com/aws/s2n-tls
• https://www.mitls.org/
• https://www.trustedfirmware.org/projects/mbed-tls/
• https://polarssl.org/
• https://www.wolfssl.com/
• https://cryptlib.com/