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README
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README
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tlslite-ng is a pure python implementation of SSLv3.0, TLS 1.0, TLS 1.1,
TLS 1.2 and TLS 1.3 protocols.
It can use pycrypto, m2crypto and gmp for acceleration of cryptographic
operations but is not dependant upon them.
Functionality implemented include:
- all above mentioned protocols, including support for client certificates
(RFC 6101, RFC 2246, RFC 4346, RFC 5246, RFC 8446 - not complete)
- RSA, RSA-PSS and ECDSA certificates
- RC4, 3DES-CBC, AES-CBC, AES-GCM, AES-CCM, AES-CCM_8 and ChaCha20 ciphers
(RFC 5246, RFC 6347, RFC 4492, RFC 5288, RFC 5289, RFC 7539, RFC 7905,
RFC 6655, RFC 7251)
- MD5, SHA1, SHA256 and SHA384 HMACs as well as AEAD mode of operation with
GCM or Poly1305 authenticator
- RSA, DHE_RSA, ECDHE_RSA, ECDHE_ECDSA key exchange
- full set of signature hashes (md5, sha1, sha224, sha256, sha384, sha512,
rsa_pss_rsae_sha256, rsa_pss_rsae_sha384 and rsa_pss_rsae_sha512) for
ServerKeyExchange and CertfificateVerify
- secp256r1, secp384r1, secp521r1, secp256k1, secp224r1 and secp192r1 curves
for ECDHE key exchange (support for last two depends on the version of ecdsa
library used)
- x25519 and x448 curves for ECDHE key exchage (RFC 7748. RFC 4492bis)
- anonymous DHE key exchange
- anonymous ECDH key exchange
- PSK and PSK-DH key exchange in TLS 1.3
- session ticket based resumption in TLS 1.3
- post-handshake key authentication in TLS 1.3
- NULL encryption ciphersuites
- FALLBACK_SCSV (RFC 7507)
- encrypt-then-MAC mode of operation for CBC ciphersuites (RFC 7366)
- TACK certificate pinning
- SRP_SHA_RSA and SRP_SHA ciphersuites (RFC 5054)
- Extended Master Secret calculation for TLS connections (RFC 7627)
- padding extension (RFC 7685)
- Keying material exporter (RFC 5705)
- Next Protocol Negotiation
- Application-Layer Protocol Negotiation Extension (RFC 7301)
- FFDHE prime/group negotiation (RFC 7919)
- Heartbeat Extension (RFC 6520)
- Record Size Limit (RFC 8449)
tlslite-ng aims to be a drop-in replacement for tlslite while providing more
comprehensive set of features and more secure defaults.