get_pubkey_from_x
[electrum-nvc.git] / lib / account.py
index 6d8defc..37ddc60 100644 (file)
 
 
 from bitcoin import *
-
+from i18n import _
+from transaction import Transaction
 
 class Account(object):
     def __init__(self, v):
         self.addresses = v.get('0', [])
         self.change = v.get('1', [])
-        self.name = v.get('name', 'unnamed')
 
     def dump(self):
-        return {'0':self.addresses, '1':self.change, 'name':self.name}
-
-    def get_name(self):
-        return self.name
+        return {'0':self.addresses, '1':self.change}
 
     def get_addresses(self, for_change):
         return self.change[:] if for_change else self.addresses[:]
@@ -46,16 +43,21 @@ class Account(object):
     def get_address(self, for_change, n):
         pass
         
+    def get_pubkeys(self, sequence):
+        return [ self.get_pubkey( *sequence )]
 
 
 
 class OldAccount(Account):
     """  Privatekey(type,n) = Master_private_key + H(n|S|type)  """
 
-    def __init__(self, mpk, mpk2 = None, mpk3 = None):
-        self.mpk = mpk
-        self.mpk2 = mpk2
-        self.mpk3 = mpk3
+    def __init__(self, v):
+        self.addresses = v.get(0, [])
+        self.change = v.get(1, [])
+        self.mpk = v['mpk'].decode('hex')
+
+    def dump(self):
+        return {0:self.addresses, 1:self.change}
 
     @classmethod
     def mpk_from_seed(klass, seed):
@@ -72,75 +74,57 @@ class OldAccount(Account):
             seed = hashlib.sha256(seed + oldseed).digest()
         return string_to_number( seed )
 
-    def get_sequence(self, sequence, mpk):
-        for_change, n = sequence
-        return string_to_number( Hash( "%d:%d:"%(n,for_change) + mpk.decode('hex') ) )
-
-    def get_address(self, sequence):
-        if not self.mpk2:
-            pubkey = self.get_pubkey(sequence)
-            address = public_key_to_bc_address( pubkey.decode('hex') )
-        elif not self.mpk3:
-            pubkey1 = self.get_pubkey(sequence)
-            pubkey2 = self.get_pubkey(sequence, mpk = self.mpk2)
-            address = Transaction.multisig_script([pubkey1, pubkey2], 2)["address"]
-        else:
-            pubkey1 = self.get_pubkey(sequence)
-            pubkey2 = self.get_pubkey(sequence, mpk = self.mpk2)
-            pubkey3 = self.get_pubkey(sequence, mpk = self.mpk3)
-            address = Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 2)["address"]
+    def get_sequence(self, for_change, n):
+        return string_to_number( Hash( "%d:%d:"%(n,for_change) + self.mpk ) )
+
+    def get_address(self, for_change, n):
+        pubkey = self.get_pubkey(for_change, n)
+        address = public_key_to_bc_address( pubkey.decode('hex') )
         return address
 
-    def get_pubkey(self, sequence, mpk=None):
+    def get_pubkey(self, for_change, n):
         curve = SECP256k1
-        if mpk is None: mpk = self.mpk
-        z = self.get_sequence(sequence, mpk)
-        master_public_key = ecdsa.VerifyingKey.from_string( mpk.decode('hex'), curve = SECP256k1 )
+        mpk = self.mpk
+        z = self.get_sequence(for_change, n)
+        master_public_key = ecdsa.VerifyingKey.from_string( mpk, curve = SECP256k1 )
         pubkey_point = master_public_key.pubkey.point + z*curve.generator
         public_key2 = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 )
         return '04' + public_key2.to_string().encode('hex')
 
-    def get_private_key_from_stretched_exponent(self, sequence, secexp):
+    def get_private_key_from_stretched_exponent(self, for_change, n, secexp):
         order = generator_secp256k1.order()
-        secexp = ( secexp + self.get_sequence(sequence, self.mpk) ) % order
+        secexp = ( secexp + self.get_sequence(for_change, n) ) % order
         pk = number_to_string( secexp, generator_secp256k1.order() )
         compressed = False
         return SecretToASecret( pk, compressed )
         
-    def get_private_key(self, sequence, seed):
-        secexp = self.stretch_key(seed)
-        return self.get_private_key_from_stretched_exponent(sequence, secexp)
-
-    def get_private_keys(self, sequence_list, seed):
+    def get_private_key(self, seed, sequence):
+        for_change, n = sequence
         secexp = self.stretch_key(seed)
-        return [ self.get_private_key_from_stretched_exponent( sequence, secexp) for sequence in sequence_list]
+        return self.get_private_key_from_stretched_exponent(for_change, n, secexp)
 
     def check_seed(self, seed):
         curve = SECP256k1
         secexp = self.stretch_key(seed)
         master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
-        master_public_key = master_private_key.get_verifying_key().to_string().encode('hex')
+        master_public_key = master_private_key.get_verifying_key().to_string()
         if master_public_key != self.mpk:
-            print_error('invalid password (mpk)')
-            raise BaseException('Invalid password')
+            print_error('invalid password (mpk)', self.mpk.encode('hex'), master_public_key.encode('hex'))
+            raise Exception('Invalid password')
         return True
 
-    def get_input_info(self, sequence):
-        if not self.mpk2:
-            pk_addr = self.get_address(sequence)
-            redeemScript = None
-        elif not self.mpk3:
-            pubkey1 = self.get_pubkey(sequence)
-            pubkey2 = self.get_pubkey(sequence,mpk=self.mpk2)
-            pk_addr = public_key_to_bc_address( pubkey1.decode('hex') ) # we need to return that address to get the right private key
-            redeemScript = Transaction.multisig_script([pubkey1, pubkey2], 2)['redeemScript']
-        else:
-            pubkey1 = self.get_pubkey(sequence)
-            pubkey2 = self.get_pubkey(sequence, mpk=self.mpk2)
-            pubkey3 = self.get_pubkey(sequence, mpk=self.mpk3)
-            pk_addr = public_key_to_bc_address( pubkey1.decode('hex') ) # we need to return that address to get the right private key
-            redeemScript = Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 2)['redeemScript']
-        return pk_addr, redeemScript
+    def redeem_script(self, sequence):
+        return None
+
+    def get_master_pubkeys(self):
+        return [self.mpk]
+
+    def get_type(self):
+        return _('Old Electrum format')
+
+    def get_keyID(self, sequence):
+        a, b = sequence
+        return 'old(%s,%d,%d)'%(self.mpk,a,b)
 
 
 
@@ -148,15 +132,11 @@ class BIP32_Account(Account):
 
     def __init__(self, v):
         Account.__init__(self, v)
-        self.c = v['c'].decode('hex')
-        self.K = v['K'].decode('hex')
-        self.cK = v['cK'].decode('hex')
+        self.xpub = v['xpub']
 
     def dump(self):
         d = Account.dump(self)
-        d['c'] = self.c.encode('hex')
-        d['K'] = self.K.encode('hex')
-        d['cK'] = self.cK.encode('hex')
+        d['xpub'] = self.xpub
         return d
 
     def get_address(self, for_change, n):
@@ -164,79 +144,78 @@ class BIP32_Account(Account):
         address = public_key_to_bc_address( pubkey.decode('hex') )
         return address
 
-    def get_pubkey(self, for_change, n):
-        K = self.K
-        chain = self.c
+    def first_address(self):
+        return self.get_address(0,0)
+
+    def get_master_pubkeys(self):
+        return [self.xpub]
+
+    def get_pubkey_from_x(self, xpub, for_change, n):
+        _, _, _, c, cK = deserialize_xkey(xpub)
         for i in [for_change, n]:
-            K, K_compressed, chain = CKD_prime(K, chain, i)
-        return K_compressed.encode('hex')
+            cK, c = CKD_pub(cK, c, i)
+        return cK.encode('hex')
+
+    def get_pubkeys(self, sequence):
+        return sorted(map(lambda x: self.get_pubkey_from_x(x, *sequence), self.get_master_pubkeys()))
+
+    def get_pubkey(self, for_change, n):
+        return self.get_pubkeys((for_change, n))[0]
 
     def redeem_script(self, sequence):
         return None
 
+    def get_type(self):
+        return _('Standard 1 of 1')
 
+    def get_keyID(self, sequence):
+        s = '/' + '/'.join( map(lambda x:str(x), sequence) )
+        return '&'.join( map(lambda x: 'bip32(%s,%s)'%(x, s), self.get_master_pubkeys() ) )
 
 
 class BIP32_Account_2of2(BIP32_Account):
 
     def __init__(self, v):
         BIP32_Account.__init__(self, v)
-        self.c2 = v['c2'].decode('hex')
-        self.K2 = v['K2'].decode('hex')
-        self.cK2 = v['cK2'].decode('hex')
+        self.xpub2 = v['xpub2']
 
     def dump(self):
         d = BIP32_Account.dump(self)
-        d['c2'] = self.c2.encode('hex')
-        d['K2'] = self.K2.encode('hex')
-        d['cK2'] = self.cK2.encode('hex')
+        d['xpub2'] = self.xpub2
         return d
 
-    def get_pubkey2(self, for_change, n):
-        K = self.K2
-        chain = self.c2
-        for i in [for_change, n]:
-            K, K_compressed, chain = CKD_prime(K, chain, i)
-        return K_compressed.encode('hex')
-
     def redeem_script(self, sequence):
-        chain, i = sequence
-        pubkey1 = self.get_pubkey(chain, i)
-        pubkey2 = self.get_pubkey2(chain, i)
-        return Transaction.multisig_script([pubkey1, pubkey2], 2)
+        pubkeys = self.get_pubkeys(sequence)
+        return Transaction.multisig_script(pubkeys, 2)
 
     def get_address(self, for_change, n):
         address = hash_160_to_bc_address(hash_160(self.redeem_script((for_change, n)).decode('hex')), 5)
         return address
 
+    def get_master_pubkeys(self):
+        return [self.xpub, self.xpub2]
+
+    def get_type(self):
+        return _('Multisig 2 of 2')
+
 
 class BIP32_Account_2of3(BIP32_Account_2of2):
 
     def __init__(self, v):
         BIP32_Account_2of2.__init__(self, v)
-        self.c3 = v['c3'].decode('hex')
-        self.K3 = v['K3'].decode('hex')
-        self.cK3 = v['cK3'].decode('hex')
+        self.xpub3 = v['xpub3']
 
     def dump(self):
         d = BIP32_Account_2of2.dump(self)
-        d['c3'] = self.c3.encode('hex')
-        d['K3'] = self.K3.encode('hex')
-        d['cK3'] = self.cK3.encode('hex')
+        d['xpub3'] = self.xpub3
         return d
 
-    def get_pubkey3(self, for_change, n):
-        K = self.K3
-        chain = self.c3
-        for i in [for_change, n]:
-            K, K_compressed, chain = CKD_prime(K, chain, i)
-        return K_compressed.encode('hex')
-
-    def get_redeem_script(self, sequence):
-        chain, i = sequence
-        pubkey1 = self.get_pubkey(chain, i)
-        pubkey2 = self.get_pubkey2(chain, i)
-        pubkey3 = self.get_pubkey3(chain, i)
-        return Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 3)
+    def get_master_pubkeys(self):
+        return [self.xpub, self.xpub2, self.xpub3]
+
+    def get_type(self):
+        return _('Multisig 2 of 3')
+
+