Re: [TLS] Babel-HMAC [was: are we holding TLS wrong?]

2018-11-14 Thread Juliusz Chroboczek
>> Unless I've missed something -- they are not, assuming you have >> a sufficiently strong random number generator. The challenge mechanism >> rebuilds the shared state in a secure manner, and the index mechanism >> ensures that an (index, seqno) pair is never reused. > I had a really hard time

Re: [TLS] Proposed Errata for rfc5246

2018-11-14 Thread Martin Thomson
For the record, NSS servers always pick their choices first, except for key shares in TLS 1.3 where P-256 and X25519 are considered equal and the one with a share wins. Some servers do similar things for ChaCha20Poly1305 vs. AES-128-GCM, where maybe client ordering indicates a preference where the

Re: [TLS] Are we holding TLS wrong?

2018-11-14 Thread David Schinazi
Hi everyone, Thanks again for your feedback, we've updated the document to reflect it: https://tools.ietf.org/html/draft-ietf-babel-dtls-02 https://www.ietf.org/rfcdiff?url2=draft-ietf-babel-dtls-02 David On Tue, Nov 13, 2018 at 1:41 PM Juliusz Chroboczek wrote: > > - s2.5 Not sure what th