Re: [TLS] RFC7924 (Cached Information Extension) Update for TLS 1.3

2023-08-14 Thread Dennis Jackson
Hi Simon, Can you expand more on the intended use case? When would it make sense to use a RFC7924-like mechanism over TLS 1.3's session resumption? I skimmed RFC 7924 and session resumption seems strictly better as it's already widely deployed, allows for the DH handshake to be optionally el

Re: [TLS] RFC7924 (Cached Information Extension) Update for TLS 1.3

2023-08-14 Thread Thom Wiggers
Hi Simon, Op za 12 aug 2023 om 16:00 schreef Simon Mangel : > Note: We have already found an adaption for TLS 1.3 in academic work > [Schwabe2021], where instead of caching the whole chain, each > certificate is cached separately. > This however leads to inconsistent signaling, as there is no > d

Re: [TLS] Abridged Certificate Compression

2023-08-14 Thread Phillip Hallam-Baker
Looks like a slippery slope to me. Hang on, I will get my skis. If you are going to do this, you might as well go the whole hog and provide a mechanism that allows the client to say if it already has a cert on file for that particular host, e.g. by means of a digest. Another approach to consider