iotconnectivity / tlspsk

pure python tls 1.3 implementation

tls1.3

pure python tls 1.3 implementation

test

debug with openssl 1.1 or above:

/usr/local/opt/openssl@1.1/bin/openssl s_server -accept 1799  -tls1_3 -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -key key.pem -cert cert.pem -debug -keylogfile key.txt -msg -state -tlsextdebug
/usr/local/opt/openssl@1.1/bin/openssl s_client -connect 127.0.0.1:1799 -tls1_3 -debug -keylogfile keylog.txt -msg -state -tlsextdebug

Current Supported Features

Implementations

• Client ✓
• Server x

Cipher Suites

• TLS_AES_128_GCM_SHA256 ✓
• TLS_AES_256_GCM_SHA384 ✓
• TLS_CHACHA20_POLY1305_SHA256 ✓
• TLS_AES_128_CCM_SHA256 ✓
• TLS_AES_128_CCM_8_SHA256 ✓

Supported Groups Extension

• secp256r1 x
• secp384r1 x
• secp521r1 x
• x25519 ✓
• x448 x
• ffdhe2048 x
• ffdhe3072 x
• ffdhe4096 x
• ffdhe6144 x
• ffdhe8192 x

Key Exchange Modes

• (EC)HDE ✓
• PSK-only ✓
• PSK with (EC)DHE ✓

Others

• session resumption ✓
• early data ✓
• cookie x
• oid filters x
• post handshake auth x