3 * passwords, private keys storage
5 * compatibility with old addresses for restore
8 an account may use one or several MPKs.
9 due to the type 1 derivations, we need to pass the mpk to this function
12 0,1... : seeded sequences
14 each account has a public and private master key
20 class Account(object):
21 def __init__(self, v):
22 self.addresses = v.get('0', [])
23 self.change = v.get('1', [])
24 self.name = v.get('name', 'unnamed')
27 return {'0':self.addresses, '1':self.change, 'name':self.name}
32 def get_addresses(self, for_change):
33 return self.change[:] if for_change else self.addresses[:]
35 def create_new_address(self, for_change):
36 addresses = self.change if for_change else self.addresses
38 address = self.get_new_address( for_change, n)
39 addresses.append(address)
43 def get_new_address(self, for_change, n):
49 class OldAccount(Account):
50 """ Privatekey(type,n) = Master_private_key + H(n|S|type) """
52 def __init__(self, mpk, mpk2 = None, mpk3 = None):
58 def mpk_from_seed(klass, seed):
60 secexp = klass.stretch_key(seed)
61 master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
62 master_public_key = master_private_key.get_verifying_key().to_string().encode('hex')
63 return master_public_key
66 def stretch_key(self,seed):
68 for i in range(100000):
69 seed = hashlib.sha256(seed + oldseed).digest()
70 return string_to_number( seed )
72 def get_sequence(self, sequence, mpk):
73 for_change, n = sequence
74 return string_to_number( Hash( "%d:%d:"%(n,for_change) + mpk.decode('hex') ) )
76 def get_address(self, sequence):
78 pubkey = self.get_pubkey(sequence)
79 address = public_key_to_bc_address( pubkey.decode('hex') )
81 pubkey1 = self.get_pubkey(sequence)
82 pubkey2 = self.get_pubkey(sequence, mpk = self.mpk2)
83 address = Transaction.multisig_script([pubkey1, pubkey2], 2)["address"]
85 pubkey1 = self.get_pubkey(sequence)
86 pubkey2 = self.get_pubkey(sequence, mpk = self.mpk2)
87 pubkey3 = self.get_pubkey(sequence, mpk = self.mpk3)
88 address = Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 2)["address"]
91 def get_pubkey(self, sequence, mpk=None):
93 if mpk is None: mpk = self.mpk
94 z = self.get_sequence(sequence, mpk)
95 master_public_key = ecdsa.VerifyingKey.from_string( mpk.decode('hex'), curve = SECP256k1 )
96 pubkey_point = master_public_key.pubkey.point + z*curve.generator
97 public_key2 = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 )
98 return '04' + public_key2.to_string().encode('hex')
100 def get_private_key_from_stretched_exponent(self, sequence, secexp):
101 order = generator_secp256k1.order()
102 secexp = ( secexp + self.get_sequence(sequence, self.mpk) ) % order
103 pk = number_to_string( secexp, generator_secp256k1.order() )
105 return SecretToASecret( pk, compressed )
107 def get_private_key(self, sequence, seed):
108 secexp = self.stretch_key(seed)
109 return self.get_private_key_from_stretched_exponent(sequence, secexp)
111 def get_private_keys(self, sequence_list, seed):
112 secexp = self.stretch_key(seed)
113 return [ self.get_private_key_from_stretched_exponent( sequence, secexp) for sequence in sequence_list]
115 def check_seed(self, seed):
117 secexp = self.stretch_key(seed)
118 master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
119 master_public_key = master_private_key.get_verifying_key().to_string().encode('hex')
120 if master_public_key != self.mpk:
121 print_error('invalid password (mpk)')
122 raise BaseException('Invalid password')
125 def get_input_info(self, sequence):
127 pk_addr = self.get_address(sequence)
130 pubkey1 = self.get_pubkey(sequence)
131 pubkey2 = self.get_pubkey(sequence,mpk=self.mpk2)
132 pk_addr = public_key_to_bc_address( pubkey1.decode('hex') ) # we need to return that address to get the right private key
133 redeemScript = Transaction.multisig_script([pubkey1, pubkey2], 2)['redeemScript']
135 pubkey1 = self.get_pubkey(sequence)
136 pubkey2 = self.get_pubkey(sequence, mpk=self.mpk2)
137 pubkey3 = self.get_pubkey(sequence, mpk=self.mpk3)
138 pk_addr = public_key_to_bc_address( pubkey1.decode('hex') ) # we need to return that address to get the right private key
139 redeemScript = Transaction.multisig_script([pubkey1, pubkey2, pubkey3], 2)['redeemScript']
140 return pk_addr, redeemScript
144 class BIP32_Account(Account):
146 def __init__(self, v):
147 Account.__init__(self, v)
148 self.c = v['c'].decode('hex')
149 self.K = v['K'].decode('hex')
150 self.cK = v['cK'].decode('hex')
153 d = Account.dump(self)
154 d['c'] = self.c.encode('hex')
155 d['K'] = self.K.encode('hex')
156 d['cK'] = self.cK.encode('hex')
159 def get_new_address(self, for_change, n):
160 pubkey = self.get_pubkey(for_change, n)
161 address = public_key_to_bc_address( pubkey )
164 def get_pubkey(self, for_change, n):
167 for i in [for_change, n]:
168 K, K_compressed, chain = CKD_prime(K, chain, i)
171 def get_address(self, sequence):
172 for_change, n = sequence
173 pubkey = self.get_pubkey(for_change, n)
174 address = public_key_to_bc_address( pubkey )
177 def get_private_key(self, sequence, master_k):
181 k, chain = CKD(k, chain, i)
182 return SecretToASecret(k, True)
184 def get_private_keys(self, sequence_list, seed):
185 return [ self.get_private_key( sequence, seed) for sequence in sequence_list]
187 def check_seed(self, seed):
188 master_secret, master_chain, master_public_key, master_public_key_compressed = bip32_init(seed)
189 assert self.mpk == (master_public_key.encode('hex'), master_chain.encode('hex'))
191 def get_input_info(self, sequence):
192 pk_addr = self.get_address(sequence)
194 return pk_addr, redeemScript
198 class BIP32_Account_2of2(BIP32_Account):
200 def __init__(self, v):
201 BIP32_Account.__init__(self, v)
202 self.c2 = v['c2'].decode('hex')
203 self.K2 = v['K2'].decode('hex')
204 self.cK2 = v['cK2'].decode('hex')
207 d = BIP32_Account.dump(self)
208 d['c2'] = self.c2.encode('hex')
209 d['K2'] = self.K2.encode('hex')
210 d['cK2'] = self.cK2.encode('hex')
213 def get_pubkey2(self, for_change, n):
216 for i in [for_change, n]:
217 K, K_compressed, chain = CKD_prime(K, chain, i)
220 def get_new_address(self, for_change, n):
221 pubkey1 = self.get_pubkey(for_change, n)
222 pubkey2 = self.get_pubkey2(for_change, n)
223 address = Transaction.multisig_script([pubkey1.encode('hex'), pubkey2.encode('hex')], 2)["address"]
226 def get_input_info(self, sequence):
228 pubkey1 = self.get_pubkey(chain, i)
229 pubkey2 = self.get_pubkey2(chain, i)
231 pk_addr = None # public_key_to_bc_address( pubkey1 ) # we need to return that address to get the right private key
232 redeemScript = Transaction.multisig_script([pubkey1.encode('hex'), pubkey2.encode('hex')], 2)['redeemScript']
233 return pk_addr, redeemScript