Re: [TLS] invariant or not: one TLS connection per TCP connection?

2020-07-14 Thread Martin Thomson
On Wed, Jul 8, 2020, at 14:22, Benjamin Kaduk wrote: > Hi all, > > There's an interesting note in draft-ietf-nfsv4-rpc-tls-08 (currently > in IESG Evaluation): > >The protocol convention specified in the current document assumes >there can be no more than one concurrent TLS session per TC

Re: [TLS] RFC 8449 – DTLS 1.2 considerations

2020-07-14 Thread Martin Thomson
On Tue, Jul 14, 2020, at 22:41, Achim Kraus wrote: > For me it seems, that an agreement about this message buffer size is > still missing. This is a question we dealt with in QUIC by limiting UDP datagram size rather than the record size (or packet size in QUIC terminology). In this case, the sp

Re: [TLS] Authenticating incompatible protocols

2020-07-14 Thread Martin Thomson
On Wed, Jul 15, 2020, at 08:53, Ben Schwartz wrote: > For ease of deployment, I wonder whether the concept of a "scope" needs > to be pinned down a bit more precisely. In 00 here, the scope is > entirely implicit; servers are required to know how users might have > found them, and what other se

Re: [TLS] Authenticating incompatible protocols

2020-07-14 Thread Ben Schwartz
I am supportive of this draft. I don't think it's needed now, but eventually I would like to live in a world where we don't have to tolerate these kinds of downgrades, and I don't think it's too early to be drawing up the mechanism to prevent them. For ease of deployment, I wonder whether the con

Re: [TLS] comments on draft-subcerts

2020-07-14 Thread Russ Housley
Watson: This does not look right to me. The extensions in the certificate are: extensions=Extensions: Extension: extnID=2.5.29.15 critical=True extnValue=0x03020780 Extension: extnID=2.5.29.37 critical=False extnValue=0x300a06082b06010505070301 Extension: e

Re: [TLS] invariant or not: one TLS connection per TCP connection?

2020-07-14 Thread Jeremy Harris
On 08/07/2020 16:07, Nico Williams wrote: > On Tue, Jul 07, 2020 at 09:22:24PM -0700, Benjamin Kaduk wrote: >> There's an interesting note in draft-ietf-nfsv4-rpc-tls-08 (currently >> in IESG Evaluation): >> >>The protocol convention specified in the current document assumes >>there can be

Re: [TLS] comments on draft-subcerts

2020-07-14 Thread Watson Ladd
On Tue, Jul 14, 2020 at 3:38 PM Salz, Rich wrote: > > I would love to see a sample cert and private key in “PEM format” and samples > of the TLS extensions encoded, or even a simplified handshake dump. https://github.com/tlswg/tls-subcerts/pull/77 > >

Re: [TLS] comments on draft-subcerts

2020-07-14 Thread Salz, Rich
I would love to see a sample cert and private key in “PEM format” and samples of the TLS extensions encoded, or even a simplified handshake dump. ___ TLS mailing list TLS@ietf.org https://www.ietf.org/mailman/listinfo/tls

Re: [TLS] comments on draft-subcerts

2020-07-14 Thread Russ Housley
Rich: > Sec 4.2 doesn’t seem to agree with the complete ASN1 in Appendix A. The > latter has DelegatedCredentialExtn which is mentioned in prose and a TBD in > 4.2 Perhaps a comment or some other words to tie them together? Or does > that issue just go away when IANA does the registration?

[TLS] comments on draft-subcerts

2020-07-14 Thread Salz, Rich
In no particular order. Mostly nits. Sec 3.2, I understand the concern of ACME being a third-party dependency, while the origin is not really. Perhaps a sentence of explanation why it is, would help. Or maybe just say “with an ACME server” And then mention ACME in the origin? Sec 4, the “va

[TLS] RFC 8449 – DTLS 1.2 considerations

2020-07-14 Thread Achim Kraus
Hello list, implementing a first experimental version of RFC 8449 for DTLS 1.2 in the Eclipse Open Source Project "Californium", I got some doubts about statements, which seems for me to be only applicable, if a API for chunked read/write operations is available. RFC 8449, Section 3, page 4 “Co