775a4bea43
1. add the curve x25519 to tls, both client and server. it's more faster, immune to timing attacks by design, does not require verifying if the public key is valid, etc etc. server-side has to check if the client supports the curve, so a new function has been introduced to parse the client's extensions. 2. reject weak dhe primes that can be easily cracked with the number field sieve algorithm. this avoids attacks like logjam. 3. stop putting unix time to the first 4 bytes of client/ server random. it can allow fingerprinting, tls 1.3 doesn't recommend it any more and there was a draft to deprecate this behaviour earlier.[1] 4. simply prf code, remove useless cipher enums. [1] https://datatracker.ietf.org/doc/html/draft-mathewson-no-gmtunixtime-00 |
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