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Deep Dive into U-Prove Cryptographic Protocols
Mar 03, 2010 at 7:35 AMWell, the RP must know the IP:
1. to verify the signature
2. to be sure that is a well known authority (equivalent of a CA in classical crypto)
From what I understand is the "signature" part that handles this and it is not clear if H is what is actually disclosed to RP or not. If it is I don't see how RP and IP cannot cooperate, but again I might be missing somethig.
Deep Dive into U-Prove Cryptographic Protocols
Mar 02, 2010 at 6:12 PMWhat does prevent the cooperation of the RP and IP to track the user?
The IP could store who requested the token which resulted in {H}sign and report it back to the RP. What am I missing?