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@@ -219,34 +219,34 @@ class KeyGenerator(MMGenObject):
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import ecdsa
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class KeyGeneratorPython(KeyGenerator):
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+
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desc = 'mmgen-python-ecdsa'
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- # From electrum:
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- # secp256k1, http://www.oid-info.com/get/1.3.132.0.10
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- _p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2FL
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- _r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141L
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- _b = 0x0000000000000000000000000000000000000000000000000000000000000007L
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- _a = 0x0000000000000000000000000000000000000000000000000000000000000000L
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- _Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798L
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- _Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8L
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- _curve_secp256k1 = ecdsa.ellipticcurve.CurveFp(_p,_a,_b)
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- _generator_secp256k1 = ecdsa.ellipticcurve.Point(_curve_secp256k1,_Gx,_Gy,_r)
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- _oid_secp256k1 = (1,3,132,0,10)
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- _secp256k1 = ecdsa.curves.Curve('secp256k1',_curve_secp256k1,_generator_secp256k1,_oid_secp256k1)
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+
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+ def __init__(self,*args,**kwargs):
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+ # secp256k1: http://www.oid-info.com/get/1.3.132.0.10
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+ p = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f
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+ r = 0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141
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+ b = 0x0000000000000000000000000000000000000000000000000000000000000007
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+ a = 0x0000000000000000000000000000000000000000000000000000000000000000
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+ Gx = 0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798
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+ Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8
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+ curve_fp = ecdsa.ellipticcurve.CurveFp(p,a,b)
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+ G = ecdsa.ellipticcurve.Point(curve_fp,Gx,Gy,r)
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+ oid = (1,3,132,0,10)
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+ self.secp256k1 = ecdsa.curves.Curve('secp256k1',curve_fp,G,oid)
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# devdoc/guide_wallets.md:
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- # Uncompressed public keys start with 0x04; compressed public keys begin with
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- # 0x03 or 0x02 depending on whether they're greater or less than the midpoint
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- # of the curve.
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+ # Uncompressed public keys start with 0x04; compressed public keys begin with 0x03 or
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+ # 0x02 depending on whether they're greater or less than the midpoint of the curve.
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def privnum2pubhex(self,numpriv,compressed=False):
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- pko = ecdsa.SigningKey.from_secret_exponent(numpriv,self._secp256k1)
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- # pubkey = 32-byte X coord + 32-byte Y coord (unsigned big-endian)
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+ pko = ecdsa.SigningKey.from_secret_exponent(numpriv,self.secp256k1)
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+ # pubkey = x (32 bytes) + y (32 bytes) (unsigned big-endian)
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pubkey = hexlify(pko.get_verifying_key().to_string())
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if compressed: # discard Y coord, replace with appropriate version byte
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- # even Y: <0, odd Y: >0 -- https://bitcointalk.org/index.php?topic=129652.0
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- p = ('03','02')[pubkey[-1] in '02468ace']
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- return p+pubkey[:64]
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+ # even y: <0, odd y: >0 -- https://bitcointalk.org/index.php?topic=129652.0
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+ return ('03','02')[pubkey[-1] in '02468ace'] + pubkey[:64]
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else:
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- return '04'+pubkey
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+ return '04' + pubkey
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def to_pubhex(self,privhex):
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assert type(privhex) == PrivKey
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