schnorr.py

gistfile1.txt

import ed25519_python as curve
import random
import hashlib
alicePrivateKey = curve.curve.mul(curve.curve.g,5)
alicePrivateKey = curve.curve.compress(alicePrivateKey).encode('hex')
m = "hello world"
G = curve.curve.g
alicePublicKeyOrignal = curve.curve.mul(G,int(alicePrivateKey,16))
alicePublicKey = curve.curve.compress(alicePublicKeyOrignal).encode('hex')
r = random.randint(1, 2^50)
ROrignal = curve.curve.mul(curve.curve.g,r)
R = ROrignal[0]
hash = hashlib.sha256(str(int(alicePublicKey,16)).encode('utf-8')+str(R).encode('utf-8')+m.encode('utf-8')).hexdigest()
s = (int(hash,16) * int(alicePrivateKey,16)) + r
s1 = curve.curve.mul(curve.curve.g,s)
hash2 = hashlib.sha256(str(int(alicePublicKey,16)).encode('utf-8')+str(R).encode('utf-8')+m.encode('utf-8')).hexdigest()
s3 = curve.curve.mul(alicePublicKeyOrignal,int(hash2,16))
s3 = curve.curve.add(ROrignal,s3)
print (s1,s3)