Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-15 Thread Jakob Bohm
On 13/05/2015 21:17, Nico Williams wrote: We're closer. On Wed, May 13, 2015 at 07:10:10PM +0200, Jakob Bohm wrote: On 13/05/2015 17:46, Nico Williams wrote: On Wed, May 13, 2015 at 12:03:33PM +0200, Jakob Bohm wrote: On 12/05/2015 21:45, Nico Williams wrote: On Tue, May 12, 2015 at 08:23:34

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-15 Thread Jakob Bohm
On 13/05/2015 21:37, Jeffrey Altman wrote: On 5/13/2015 3:17 PM, Nico Williams wrote: Kerberos in particular supports PROT_READY. There is no Kerberos IV GSS mechanism, FYI. I'd never heard of GSS-SRP-6a; do you have a reference? Nico, Look for draft-burdis-cat-srp-sasl. It was never standa

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-13 Thread Jeffrey Altman
On 5/13/2015 3:17 PM, Nico Williams wrote: > Kerberos in particular supports PROT_READY. There is no Kerberos IV GSS > mechanism, FYI. I'd never heard of GSS-SRP-6a; do you have a reference? Nico, Look for draft-burdis-cat-srp-sasl. It was never standardized but I believe there is an implement

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-13 Thread Nico Williams
I wonder if we could do this in the KITTEN WG list. Maybe not every extension to TLS needs to be treated as a TLS WG work item... We should ask the security ADs. Nico -- ___ openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/l

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-13 Thread Nico Williams
We're closer. On Wed, May 13, 2015 at 07:10:10PM +0200, Jakob Bohm wrote: > On 13/05/2015 17:46, Nico Williams wrote: > >On Wed, May 13, 2015 at 12:03:33PM +0200, Jakob Bohm wrote: > >>On 12/05/2015 21:45, Nico Williams wrote: > >>>On Tue, May 12, 2015 at 08:23:34PM +0200, Jakob Bohm wrote: > >>>

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-13 Thread Jakob Bohm
For the TL;DR: My original quick writeup included some mistakes in the details of TLS (forgot about Finished messages) and SASL/GS2. It is thus in more than anticipated need of change before it can become a proper spec, finding and fixing such mistakes is the main benefit of having this kind of d

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-13 Thread Nico Williams
On Wed, May 13, 2015 at 12:03:33PM +0200, Jakob Bohm wrote: > On 12/05/2015 21:45, Nico Williams wrote: > >On Tue, May 12, 2015 at 08:23:34PM +0200, Jakob Bohm wrote: > >>How about the following simplifications for the new > >>extension, lets call it "GSS-2" (at least in this e-mail). > >> > >>1.

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-13 Thread Jakob Bohm
On 12/05/2015 21:45, Nico Williams wrote: On Tue, May 12, 2015 at 08:23:34PM +0200, Jakob Bohm wrote: How about the following simplifications for the new extension, lets call it "GSS-2" (at least in this e-mail). 1. GSS (including SASL/GS2) is always done via the SPNego GSS mechanism, which pr

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-12 Thread Nico Williams
I should add that I prefer a protocol that optimizes the GSS round trips over one that doesn't, though that means using SPNEGO for negotiation (when negotiation is desired). ___ openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/li

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-12 Thread Nico Williams
On Tue, May 12, 2015 at 08:23:34PM +0200, Jakob Bohm wrote: > How about the following simplifications for the new > extension, lets call it "GSS-2" (at least in this e-mail). > > 1. GSS (including SASL/GS2) is always done via the SPNego > GSS mechanism, which provides standard handling of > mecha

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-12 Thread Jakob Bohm
On 11/05/2015 20:52, Nico Williams wrote: On Mon, May 11, 2015 at 04:42:49PM +, Viktor Dukhovni wrote: On Mon, May 11, 2015 at 11:25:33AM -0500, Nico Williams wrote: - If you don't want to depend on server certs, use anon-(EC)DH ciphersuites. Clients and servers must reject[*] T

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-11 Thread Nico Williams
On Mon, May 11, 2015 at 04:42:49PM +, Viktor Dukhovni wrote: > On Mon, May 11, 2015 at 11:25:33AM -0500, Nico Williams wrote: > > > - If you don't want to depend on server certs, use anon-(EC)DH > >ciphersuites. > > > >Clients and servers must reject[*] TLS connections using such a >

Re: [openssl-users] [openssl-dev] Replacing RFC2712 (was Re: Kerberos)

2015-05-11 Thread Viktor Dukhovni
On Mon, May 11, 2015 at 11:25:33AM -0500, Nico Williams wrote: > - If you don't want to depend on server certs, use anon-(EC)DH >ciphersuites. > >Clients and servers must reject[*] TLS connections using such a >ciphersuite but not using a GSS-authenticated application protocol. [*]