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The Elliptic Curve Digital Signature Algorithm

6 votes
Accepted

PEM format for ECDSA

The AlgId and key format specific to ECDSA (and ECDH) are in RFC3279 section 2.3.5 although you can ignore the complicated parts about ECParameters because in practice everyone uses the simpler namedCurve …
dave_thompson_085's user avatar
1 vote
Accepted

How to sign Bitcoin transactions using JCE?

Your signatures don't verify because in JCE you are using algorithm SHA256withECDSA which hashes the supplied data (re-hashes, since you are supplying a hash) before doing the kG.x,kinv(h+rd) computat …
dave_thompson_085's user avatar