def GenSchnorr(hash_prefix, pub, sec, k):
#modified from original algorithm to match Monero better
#see the ag schnorr pdf for original alg.
#Note in Monero, hash prefix is always 32 bytes..
#hash_prefix = binascii.hexlify(prefix)
#k = PaperWallet.skGen() #comment for testing
comm = MiniNero.scalarmultBase(k)
print("comm", "hash_prefix", comm, hash_prefix)
if MiniNero.scalarmultBase(sec) != pub:
print"error in genSchnorr"
return -1
if MiniNero.sc_check(sec) == False:
print "fail in geSchnorr"
return -1
c = MiniNero.sc_reduce_key(MiniNero.cn_fast_hash(hash_prefix + pub + comm))
r = MiniNero.sc_sub_keys(k, MiniNero.sc_mul_keys(c, sec))
#uncomment to test malleability
c = MiniNero.sc_reduce_key(MiniNero.cn_fast_hash(hash_prefix + pub + comm))
r = MiniNero.sc_unreduce_key(MiniNero.sc_sub_keys(k, MiniNero.sc_mul_keys(c, sec)))
return r, c
def GenSchnorr(hash_prefix, pub, sec, k):
#modified from original algorithm to match ByteRub better
#see the ag schnorr pdf for original alg.
#Note in ByteRub, hash prefix is always 32 bytes..
#hash_prefix = binascii.hexlify(prefix)
#k = PaperWallet.skGen() #comment for testing
comm = MiniNero.scalarmultBase(k)
print("comm", "hash_prefix", comm, hash_prefix)
if MiniNero.scalarmultBase(sec) != pub:
print "error in genSchnorr"
return -1
if MiniNero.sc_check(sec) == False:
print "fail in geSchnorr"
return -1
c = MiniNero.sc_reduce_key(MiniNero.cn_fast_hash(hash_prefix + pub + comm))
r = MiniNero.sc_sub_keys(k, MiniNero.sc_mul_keys(c, sec))
#uncomment to test malleability
c = MiniNero.sc_reduce_key(MiniNero.cn_fast_hash(hash_prefix + pub + comm))
r = MiniNero.sc_unreduce_key(
MiniNero.sc_sub_keys(k, MiniNero.sc_mul_keys(c, sec)))
return r, c
