Interesting note that this guy's choice of PAKE, Cpace, was chosen about a week ago by the CFRG for use in IETF protocols. Cpace is new, but that's a big vote of confidence for it.
Indeed! saljam asked me about a month ago what PAKE he should use with a Go implementation, and since there isn't a canonical one I put together a CPace implementation on top of ristretto255: filippo.io/cpace. It's a wonderfully simple algorithm when instantiated with a prime order group such as Ristretto.
Hey, the libsodium guy! Thanks a million for your work on that; I've really enjoyed using it. I actually ran across this the day after the CFRG meeting and was happy to see a respected implementer had already written a C version. Would you say it's mature enough to use yet?
