Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Yoav Nir writes: > I have mixed feelings about this. It's better than all four of those > drafts advancing separately. OTOH this plug-innable architecture is > pretty much admitting defeat. It sets us up to have a situation like > EAP, with lots of different methods, and no guide to implementers as

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Nico Williams writes: > We already have three generic authentication frameworks: SASL, > GSS-API, and EAP. Must we add a fourth one? (We also have a number > of less generic ones, such as the ones in SSHv2, TLS, ...). I do not consider this to be generic authentication framework. I consider this

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Nico Williams writes: > On Tue, Apr 12, 2011 at 7:17 AM, Tero Kivinen wrote: > > 1) Add new notification to the IKE_SA_INIT telling which SPAM > >   algorithms are supported. This will notification will include tuple > >   of 8-bit integers containing the 8-bit SPAM algorith number and > >   8-bit

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Nico Williams writes: > Reading into what you write above you seem to think that it's not > possible to abstract authentication sufficiently well (for IKEv2's > purposes, in this case). I disagree. I'll grant only that there's We do have abstract authentication method already in the IKEv2, i.e.

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Dan Harkins writes: > I'm a bit undecided on Tero's proposal. I tend to get in trouble when > I ascribe motivation to things people do so I won't do that, but as > someone who actually implements the protocols we design here I think > having n protocols, where n > 1, to solve a single problem wit

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Nico Williams writes: > I fail to see how Tero's proposal makes any headway. Customers who > have and want to use AAA will not be able to use it, near as I can > tell, and if you undertake to make it possible to use AAA in Tero's > proposal then you'll be quickly approximating EAP re-invention. I

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Tero Kivinen
Yaron Sheffer writes: > So I don't think we need a whole framework. We just need a way for the > two peers to negotiate which method(s) they support early enough, i.e. > in IKE_SA_INIT. In PACE we use a notification, and I strongly urge the > two other documents' authors to do the same. But I'm

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Yaron Sheffer
Hi Tero, To clarify (once again): I am NOT moving forward with HUSH. I think it's a nice contribution and I'm not aware of any major problems with it, but I'd rather concentrate on one PAKE method. I decided to go with PACE for the sole reason that it comes with a security proof. Thanks,

Re: [IPsec] Proposal for the secure password authentication method problem

2011-04-13 Thread Nico Williams
On Wed, Apr 13, 2011 at 5:53 AM, Tero Kivinen wrote: > Nico Williams writes: >> b) there are reserved numbers for using the GSS-API in IKEv1, and we >> could make it usable in IKEv2, > > If I remember right GSS-API is also asymmetric meaning only there is > clear separation of client and server si

Re: [IPsec] Queries relating to ESP/AH GCM & GMAC

2011-04-13 Thread Vinod Sasi
Hello Scott, Thank you for your time. To give you a background, I am implementing a conformance tool which exercises GCM/GMAC using ESP/AH for IKev1, running against Strongswan. Based on your inputs, I have been able to successfully negotiate ikev1 & send ESP/GCM packets using IKEv1 to Strongsw