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reformatting

master
ThomasV 11 years ago
parent
commit
7933ac4324
  1. 13
      lib/bitcoin.py

13
lib/bitcoin.py

@ -468,6 +468,7 @@ class MyVerifyingKey(ecdsa.VerifyingKey):
class EC_KEY(object):
def __init__( self, k ):
secret = string_to_number(k)
self.pubkey = ecdsa.ecdsa.Public_key( generator_secp256k1, generator_secp256k1 * secret )
@ -492,12 +493,11 @@ class EC_KEY(object):
else:
raise Exception("error: cannot sign message")
@classmethod
def verify_message(self, address, signature, message):
sig = base64.b64decode(signature)
if len(sig) != 65: raise Exception("Wrong encoding")
if len(sig) != 65:
raise Exception("Wrong encoding")
nV = ord(sig[0])
if nV < 27 or nV >= 35:
raise Exception("Bad encoding")
@ -506,16 +506,15 @@ class EC_KEY(object):
nV -= 4
else:
compressed = False
recid = nV - 27
h = Hash(msg_magic(message))
public_key = MyVerifyingKey.from_signature(sig[1:], recid, h, curve = SECP256k1)
# check public key
public_key.verify_digest(sig[1:], h, sigdecode = ecdsa.util.sigdecode_string)
pubkey = point_to_ser(public_key.pubkey.point, compressed)
# check that we get the original signing address
addr = public_key_to_bc_address( point_to_ser(public_key.pubkey.point, compressed) )
addr = public_key_to_bc_address(pubkey)
if address != addr:
raise Exception("Bad signature")

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