h160 = hash_160(public_key)
return hash_160_to_bc_address(h160)
-def hash_160_to_bc_address(h160, addrtype = 0):
+def hash_160_to_bc_address(h160, addrtype = 8):
vh160 = chr(addrtype) + h160
h = Hash(vh160)
addr = vh160 + h[0:4]
return privkey[9:9+32]
-def SecretToASecret(secret, compressed=False, addrtype=0):
+def SecretToASecret(secret, compressed=False, addrtype=8):
vchIn = chr((addrtype+128)&255) + secret
if compressed: vchIn += '\01'
return EncodeBase58Check(vchIn)
-def ASecretToSecret(key, addrtype=0):
+def ASecretToSecret(key, addrtype=8):
vch = DecodeBase58Check(key)
if vch and vch[0] == chr((addrtype+128)&255):
return vch[1:]
def msg_magic(message):
varint = var_int(len(message))
encoded_varint = "".join([chr(int(varint[i:i+2], 16)) for i in xrange(0, len(varint), 2)])
- return "\x18Bitcoin Signed Message:\n" + encoded_varint + message
+ return "\x18Novacoin Signed Message:\n" + encoded_varint + message
def verify_message(address, signature, message):
def sign_message(self, message, compressed, address):
private_key = ecdsa.SigningKey.from_secret_exponent( self.secret, curve = SECP256k1 )
public_key = private_key.get_verifying_key()
- signature = private_key.sign_digest_deterministic( Hash( msg_magic(message) ), hashfunc=hashlib.sha256, sigencode = ecdsa.util.sigencode_string )
+ signature = private_key.sign_digest_deterministic( Hash( msg_magic(message) ), hashfunc=hashlib.sha256, sigencode = ecdsa.util.sigencode_string_canonize )
assert public_key.verify_digest( signature, Hash( msg_magic(message) ), sigdecode = ecdsa.util.sigdecode_string)
for i in range(4):
sig = base64.b64encode( chr(27 + i + (4 if compressed else 0)) + signature )
return cK_n, c_n
+BITCOIN_HEADER_PRIV = "0488ade4"
+BITCOIN_HEADER_PUB = "0488b21e"
+
+TESTNET_HEADER_PRIV = "04358394"
+TESTNET_HEADER_PUB = "043587cf"
+
+BITCOIN_HEADERS = (BITCOIN_HEADER_PUB, BITCOIN_HEADER_PRIV)
+TESTNET_HEADERS = (TESTNET_HEADER_PUB, TESTNET_HEADER_PRIV)
+
+def _get_headers(testnet):
+ """Returns the correct headers for either testnet or bitcoin, in the form
+ of a 2-tuple, like (public, private)."""
+ if testnet:
+ return TESTNET_HEADERS
+ else:
+ return BITCOIN_HEADERS
+
def deserialize_xkey(xkey):
+
xkey = DecodeBase58Check(xkey)
assert len(xkey) == 78
- assert xkey[0:4].encode('hex') in ["0488ade4", "0488b21e"]
+
+ xkey_header = xkey[0:4].encode('hex')
+ # Determine if the key is a bitcoin key or a testnet key.
+ if xkey_header in TESTNET_HEADERS:
+ head = TESTNET_HEADER_PRIV
+ elif xkey_header in BITCOIN_HEADERS:
+ head = BITCOIN_HEADER_PRIV
+ else:
+ raise Exception("Unknown xkey header: '%s'" % xkey_header)
+
depth = ord(xkey[4])
fingerprint = xkey[5:9]
child_number = xkey[9:13]
c = xkey[13:13+32]
- if xkey[0:4].encode('hex') == "0488ade4":
+ if xkey[0:4].encode('hex') == head:
K_or_k = xkey[13+33:]
else:
K_or_k = xkey[13+32:]
return depth, fingerprint, child_number, c, K_or_k
-def get_xkey_name(xkey):
+def get_xkey_name(xkey, testnet=False):
depth, fingerprint, child_number, c, K = deserialize_xkey(xkey)
n = int(child_number.encode('hex'), 16)
if n & BIP32_PRIME:
raise BaseException("xpub depth error")
-def xpub_from_xprv(xprv):
+def xpub_from_xprv(xprv, testnet=False):
depth, fingerprint, child_number, c, k = deserialize_xkey(xprv)
K, cK = get_pubkeys_from_secret(k)
- xpub = "0488B21E".decode('hex') + chr(depth) + fingerprint + child_number + c + cK
+ header_pub, _ = _get_headers(testnet)
+ xpub = header_pub.decode('hex') + chr(depth) + fingerprint + child_number + c + cK
return EncodeBase58Check(xpub)
-def bip32_root(seed):
+def bip32_root(seed, testnet=False):
import hmac
+ header_pub, header_priv = _get_headers(testnet)
seed = seed.decode('hex')
- I = hmac.new("Bitcoin seed", seed, hashlib.sha512).digest()
+ I = hmac.new("Novacoin seed", seed, hashlib.sha512).digest()
master_k = I[0:32]
master_c = I[32:]
K, cK = get_pubkeys_from_secret(master_k)
- xprv = ("0488ADE4" + "00" + "00000000" + "00000000").decode("hex") + master_c + chr(0) + master_k
- xpub = ("0488B21E" + "00" + "00000000" + "00000000").decode("hex") + master_c + cK
+ xprv = (header_priv + "00" + "00000000" + "00000000").decode("hex") + master_c + chr(0) + master_k
+ xpub = (header_pub + "00" + "00000000" + "00000000").decode("hex") + master_c + cK
return EncodeBase58Check(xprv), EncodeBase58Check(xpub)
-
-def bip32_private_derivation(xprv, branch, sequence):
+def bip32_private_derivation(xprv, branch, sequence, testnet=False):
+ header_pub, header_priv = _get_headers(testnet)
depth, fingerprint, child_number, c, k = deserialize_xkey(xprv)
assert sequence.startswith(branch)
sequence = sequence[len(branch):]
fingerprint = hash_160(parent_cK)[0:4]
child_number = ("%08X"%i).decode('hex')
K, cK = get_pubkeys_from_secret(k)
- xprv = "0488ADE4".decode('hex') + chr(depth) + fingerprint + child_number + c + chr(0) + k
- xpub = "0488B21E".decode('hex') + chr(depth) + fingerprint + child_number + c + cK
+ xprv = header_priv.decode('hex') + chr(depth) + fingerprint + child_number + c + chr(0) + k
+ xpub = header_pub.decode('hex') + chr(depth) + fingerprint + child_number + c + cK
return EncodeBase58Check(xprv), EncodeBase58Check(xpub)
-
-def bip32_public_derivation(xpub, branch, sequence):
+def bip32_public_derivation(xpub, branch, sequence, testnet=False):
+ header_pub, _ = _get_headers(testnet)
depth, fingerprint, child_number, c, cK = deserialize_xkey(xpub)
assert sequence.startswith(branch)
sequence = sequence[len(branch):]
fingerprint = hash_160(parent_cK)[0:4]
child_number = ("%08X"%i).decode('hex')
- xpub = "0488B21E".decode('hex') + chr(depth) + fingerprint + child_number + c + cK
+ xpub = header_pub.decode('hex') + chr(depth) + fingerprint + child_number + c + cK
return EncodeBase58Check(xpub)
git://git.novaco.in / electrum-nvc.git / blobdiff