[TLS] Re: rfc8446-bis CSPRNG

2025-02-09 Thread Martin Thomson
On Mon, Feb 10, 2025, at 17:48, Loganaden Velvindron wrote: > This caught my attention: > >> [...] **such as /dev/urandom** [...] > > /dev/urandom is nice, but many OSes have adopted the getrandom() > interface. The advantage is that you don't need an additional file > description open and it can

[TLS] rfc8446-bis CSPRNG

2025-02-09 Thread Loganaden Velvindron
Hi All, This caught my attention: " TLS requires a cryptographically secure pseudorandom number generator (CSPRNG). In most cases, the operating system provides an appropriate facility such as /dev/urandom, which should be used absent other (e.g., performance) concerns. It is RECOMMENDED to use a

[TLS] PR #1372: HKDF label

2025-02-09 Thread Eric Rescorla
Hi folks, David Benjamin noticed that there was some vagueness in the TLS and DTLS specs about the exact prefix to use with HKDF-Expand-Label. The following PR attempts to clarify what I think we agree on, which is that extensions should use the label associated with the version of TLS they are b