[IPsec] Issue #189 - Reply is not needed for unprotected message containing QCD

2010-09-21 Thread Yoav Nir
Hi all. We're starting discussions of the issues that are open for the failure detection draft. Reported by Scott C Moonen: What is the purpose of sending an empty response to the unprotected N(INVALID[_IKE]_SPI)N(QCD_TOKEN)+ message? I'm not sure it provides any real value and would

[IPsec] Issue #190 - Move QCD token to first AUTH exchange

2010-09-21 Thread Yoav Nir
Reported by Yaron Sheffer: I would have preferred the token to be resistant to stealing (and duplication), in which case it can be sent in the *first* AUTH message. If we ensure that the token maker's SPI is long/random (see below), this might be possible. The relevant part of the document