On 10/9/2014 9:08 AM, Tamme Schichler wrote: > Thanks for these links, the proofs of receipt are definitely something I > need to look into. Ideally it should be simultaneous, but I don't know a > scheme that can do that without a witness. ... > Since I'm thinking about a chat protocol ...
Non-repudiation of receipt throughout a conversation. Interesting requirement. Yeah, I doubt there's a deployed solution, though I'm not plugged in to the right communities to be sure. FWIW, what I've been used to seeing, for non-repudiation mechanisms, is a requirement for an independent time-stamping service, rather than for a more elaborate third-party role. Relevant links that popped up on non-rep, recipient, conversation: Non-Repudiation in Internet Telephony http://sit.sit.fraunhofer.de/smv/publications/download/VoIP_Non_Repudiation.pdf http://security.stackexchange.com/questions/29550/recipient-non-repudiation-in-secure-e-mail-transport http://docs.oracle.com/cd/E13214_01/wlintegration/v2_0/collaborate/security/nonrep.htm (I was amused to see that the end of the google list for that search was a pointer to my previous message to you...) d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net _______________________________________________ Messaging mailing list [email protected] https://moderncrypto.org/mailman/listinfo/messaging
