Re: [Emu] on draft-hartman-emu-mutual-crypto-bind-00

2012-06-28 Thread Sam Hartman
> "zhou" == zhou sujing writes: zhou> To my understanding, right prior to finishing tunnel establishement, EAP peer zhou> and EAP Server(print server in the server insertion attack case) should have zhou> exchanged channel binding with integrity protection by key only known to

Re: [Emu] New draft on mutual crypto binding problem

2012-06-28 Thread Sam Hartman
> "Hao" == Hao Zhou writes: Hao> Sam: Hao> This is a well thought and well written draft, it covers a lot of background Hao> and aspect of the attacks and mitigations. However, I have few comments: Thanks! You listed a set of drawbacks to EMSK-based crypto binding. Hao> A.

Re: [Emu] on draft-hartman-emu-mutual-crypto-bind-00

2012-06-28 Thread Jim Schaad
> -Original Message- > From: emu-boun...@ietf.org [mailto:emu-boun...@ietf.org] On Behalf Of > Sam Hartman > Sent: Thursday, June 28, 2012 11:06 AM > To: zhou.suj...@zte.com.cn > Cc: hartmans-i...@mit.edu; emu@ietf.org > Subject: Re: [Emu] on draft-hartman-emu-mutual-crypto-bind-00 > > >

Re: [Emu] on draft-hartman-emu-mutual-crypto-bind-00

2012-06-28 Thread Sam Hartman
> "Jim" == Jim Schaad writes: Before the outer MSK has been computed, yes. Before the inner MSK (the one you need to attack crypto binding) has been computed no. Also, note that the RADIUS server only knows about the inner method, so it will transport the inner MSK as soon as it believes the