add magic header for compatibility with the official Bitcoin client
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@ -218,7 +218,6 @@ from version import ELECTRUM_VERSION, SEED_VERSION
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class Wallet:
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def __init__(self, interface):
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@ -342,11 +341,14 @@ class Wallet:
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pk = number_to_string(secexp,order)
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return pk
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def msg_magic(self, message):
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return "\x18Bitcoin Signed Message:\n" + chr( len(message) ) + message
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def sign_message(self, address, message, password):
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private_key = ecdsa.SigningKey.from_string( self.get_private_key2(address, password), curve = SECP256k1 )
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public_key = private_key.get_verifying_key()
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signature = private_key.sign_digest( Hash( message ), sigencode = ecdsa.util.sigencode_string )
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assert public_key.verify_digest( signature, Hash( message ), sigdecode = ecdsa.util.sigdecode_string)
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signature = private_key.sign_digest( Hash( self.msg_magic( message ) ), sigencode = ecdsa.util.sigencode_string )
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assert public_key.verify_digest( signature, Hash( self.msg_magic( message ) ), sigdecode = ecdsa.util.sigdecode_string)
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for i in range(4):
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sig = base64.b64encode( chr(27+i) + signature )
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if self.verify_message( address, sig, message):
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@ -357,20 +359,17 @@ class Wallet:
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def verify_message(self, address, signature, message):
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""" See http://www.secg.org/download/aid-780/sec1-v2.pdf for the math """
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from ecdsa import numbertheory, ellipticcurve, util
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import msqr
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curve = curve_secp256k1
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G = generator_secp256k1
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order = G.order()
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# extract r,s from signature
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sig = base64.b64decode(signature)
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if len(sig) != 65: raise BaseException("error")
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recid = ord(sig[0]) - 27
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# print "recid", recid
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# extract r,s from signature
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r,s = util.sigdecode_string(sig[1:], order)
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recid = ord(sig[0]) - 27
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# 1.1
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x = r + (recid/2) * order
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@ -388,7 +387,7 @@ class Wallet:
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return False
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# 1.5 compute e from message:
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h = Hash(message)
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h = Hash( self.msg_magic( message ) )
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e = string_to_number(h)
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minus_e = -e % order
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