Quote from: gimre on January 15, 2014, 10:05:30 AM

Quote from: Come-from-Beyond on January 15, 2014, 09:03:00 AM

Quote from: Jaguar0625 on January 15, 2014, 01:24:50 AM

Actually, there might be a bug in the C++ code. I compiled it and ran a few tests with sign, but the signature that gets generated is different each time i run the program (typically the sign of an uninitialized variable somewhere). The problem appears to happen somewhere in divmod.

It's a normal behavior, not a bug, don't waste too much time on that.

That depends on algo.
In case of Nxt's EC-KCDSA "k" value is picked not choosen randomly,
So if you feed it with the same data, sig should be te same...

(k is calculated from 1360-1365, that's Y in NXT code
https://bitbucket.org/JeanLucPicard/nxt-public/src/4073c21098076d3469b3f74d49e73ffabe3a2001/Nxt.java?at=master#cl-1360
and it's based on "sig priv key" (s based on user's pub key) and message
)

Stick to NRS code.