Open SurpriseMF3000 opened 2 years ago
The insight API is not public. It's blocking your domain (localhost?) from accessing it.
You could try the bitcore-node API at https://api.bitcore.io/api/BTC/mainnet/address/<your address>/txs?unspent=1
See https://github.com/bitpay/bitcore/blob/master/packages/bitcore-node/src/routes/api/address.ts for details on address endpoints
Im trying to use this Bitcore Libary but now nothing works anymore.
npm install bitcore-insight --save
function newwallet(){
const bitcore = require('bitcore-lib');
const Insight = require('bitcore-insight').Insight;
let insight = new Insight('testnet');
const privateKey = new bitcore.PrivateKey();
alert(privateKey);
}
I dont get any errors but also dont get a Output with the privateKey.
Do you have any solutions for this?
Thanks!
It's hard to say without seeing the full implementation. Are you running this in a browser? Are you sure newwallet
is being called?
Try using console.log instead of alert
Hello @kajoseph,
i fixed my Code but i still get the error: CORS request rejected: https://test-insight.bitpay.com/api/addrs/utxo
How can i change it and use the bitcore-node API at https://api.bitcore.io/api/BTC/mainnet/address/<your address>/txs?unspent=1
?
Current: insight.getUtxos(myAddress, (err, utxos) => {
Thanks again 👍
-- coding: utf-8 -- #
#
#
#
import hashlib import base64 import hmac import os import json
import ecdsa import pyaes
from .util import bfh, bh2u, to_string, BitcoinException from . import version from .util import print_error, InvalidPassword, assert_bytes, to_bytes, inv_dict from . import segwit_addr from . import constants
################################## transactions
COINBASE_MATURITY = 100 COIN = 100000000
TYPE_ADDRESS = 0 TYPE_PUBKEY = 1 TYPE_SCRIPT = 2
try: from Cryptodome.Cipher import AES except: AES = None
class InvalidPadding(Exception): pass
def append_PKCS7_padding(data): assert_bytes(data) padlen = 16 - (len(data) % 16) return data + bytes([padlen]) * padlen
def strip_PKCS7_padding(data): assert_bytes(data) if len(data) % 16 != 0 or len(data) == 0: raise InvalidPadding("invalid length") padlen = data[-1] if padlen > 16: raise InvalidPadding("invalid padding byte (large)") for i in data[-padlen:]: if i != padlen: raise InvalidPadding("invalid padding byte (inconsistent)") return data[0:-padlen]
def aes_encrypt_with_iv(key, iv, data): assert_bytes(key, iv, data) data = append_PKCS7_padding(data) if AES: e = AES.new(key, AES.MODE_CBC, iv).encrypt(data) else: aes_cbc = pyaes.AESModeOfOperationCBC(key, iv=iv) aes = pyaes.Encrypter(aes_cbc, padding=pyaes.PADDING_NONE) e = aes.feed(data) + aes.feed() # empty aes.feed() flushes buffer return e
def aes_decrypt_with_iv(key, iv, data): assert_bytes(key, iv, data) if AES: cipher = AES.new(key, AES.MODE_CBC, iv) data = cipher.decrypt(data) else: aes_cbc = pyaes.AESModeOfOperationCBC(key, iv=iv) aes = pyaes.Decrypter(aes_cbc, padding=pyaes.PADDING_NONE) data = aes.feed(data) + aes.feed() # empty aes.feed() flushes buffer try: return strip_PKCS7_padding(data) except InvalidPadding: raise InvalidPassword()
def EncodeAES(secret, s): assert_bytes(s) iv = bytes(os.urandom(16)) ct = aes_encrypt_with_iv(secret, iv, s) e = iv + ct return base64.b64encode(e)
def DecodeAES(secret, e): e = bytes(base64.b64decode(e)) iv, e = e[:16], e[16:] s = aes_decrypt_with_iv(secret, iv, e) return s
def pw_encode(s, password): if password: secret = Hash(password) return EncodeAES(secret, to_bytes(s, "utf8")).decode('utf8') else: return s
def pw_decode(s, password): if password is not None: secret = Hash(password) try: d = to_string(DecodeAES(secret, s), "utf8") except Exception: raise InvalidPassword() return d else: return s
def rev_hex(s): return bh2u(bfh(s)[::-1])
def int_to_hex(i, length=1): if not isinstance(i, int): raise TypeError('{} instead of int'.format(i)) if i < 0:
i = pow(256, length) + i
s = hex(i)[2:].rstrip('L')
s = "0"*(2*length - len(s)) + s
return rev_hex(s)
def var_int(i):
if i<0xfd:
return int_to_hex(i)
elif i<=0xffff:
return "fd"+int_to_hex(i,2)
elif i<=0xffffffff:
return "fe"+int_to_hex(i,4)
else:
return "ff"+int_to_hex(i,8)
def op_push(i): if i<0x4c: # OP_PUSHDATA1 return int_to_hex(i) elif i<=0xff: return '4c' + int_to_hex(i) elif i<=0xffff: return '4d' + int_to_hex(i,2) else: return '4e' + int_to_hex(i,4)
def push_script(x): return op_push(len(x)//2) + x
def sha256(x): x = to_bytes(x, 'utf8') return bytes(hashlib.sha256(x).digest())
def Hash(x): x = to_bytes(x, 'utf8') out = bytes(sha256(sha256(x))) return out
hash_encode = lambda x: bh2u(x[::-1]) hash_decode = lambda x: bfh(x)[::-1] hmac_sha_512 = lambda x, y: hmac.new(x, y, hashlib.sha512).digest()
def is_new_seed(x, prefix=version.SEED_PREFIX): from . import mnemonic x = mnemonic.normalize_text(x) s = bh2u(hmac_sha_512(b"Seed version", x.encode('utf8'))) return s.startswith(prefix)
def is_old_seed(seed): from . import old_mnemonic, mnemonic seed = mnemonic.normalize_text(seed) words = seed.split() try:
old_mnemonic.mn_decode(words)
uses_electrum_words = True
except Exception:
uses_electrum_words = False
try:
seed = bfh(seed)
is_hex = (len(seed) == 16 or len(seed) == 32)
except Exception:
is_hex = False
return is_hex or (uses_electrum_words and (len(words) == 12 or len(words) == 24))
def seed_type(x): if is_old_seed(x): return 'old' elif is_new_seed(x): return 'standard' elif is_new_seed(x, version.SEED_PREFIX_SW): return 'segwit' elif is_new_seed(x, version.SEED_PREFIX_2FA): return '2fa' return ''
is_seed = lambda x: bool(seed_type(x))
def i2o_ECPublicKey(pubkey, compressed=False):
# 0x04 + 32-byte X-coordinate + 32-byte Y-coordinate
# 0x00 = point at infinity, 0x02 and 0x03 = compressed, 0x04 = uncompressed
# compressed keys: <sign> <x> where <sign> is 0x02 if y is even and 0x03 if y is odd
if compressed:
if pubkey.point.y() & 1:
key = '03' + '%064x' % pubkey.point.x()
else:
key = '02' + '%064x' % pubkey.point.x()
else:
key = '04' + \
'%064x' % pubkey.point.x() + \
'%064x' % pubkey.point.y()
return bfh(key)
############ functions from pywallet ##################### def hash_160(public_key): try: md = hashlib.new('ripemd160') md.update(sha256(public_key)) return md.digest() except BaseException: from . import ripemd md = ripemd.new(sha256(public_key)) return md.digest()
def hash160_to_b58_address(h160, addrtype): s = bytes([addrtype]) s += h160 return base_encode(s+Hash(s)[0:4], base=58)
def b58_address_to_hash160(addr): addr = to_bytes(addr, 'ascii') _bytes = base_decode(addr, 25, base=58) return _bytes[0], _bytes[1:21]
def hash160_to_p2pkh(h160, *, net=None): if net is None: net = constants.net return hash160_to_b58_address(h160, net.ADDRTYPE_P2PKH)
def hash160_to_p2sh(h160, *, net=None): if net is None: net = constants.net return hash160_to_b58_address(h160, net.ADDRTYPE_P2SH)
def public_key_to_p2pkh(public_key): return hash160_to_p2pkh(hash_160(public_key))
def hash_to_segwit_addr(h, witver, *, net=None): if net is None: net = constants.net return segwit_addr.encode(net.SEGWIT_HRP, witver, h)
def public_key_to_p2wpkh(public_key): return hash_to_segwit_addr(hash_160(public_key), witver=0)
def script_to_p2wsh(script): return hash_to_segwit_addr(sha256(bfh(script)), witver=0)
def p2wpkh_nested_script(pubkey): pkh = bh2u(hash_160(bfh(pubkey))) return '00' + push_script(pkh)
def p2wsh_nested_script(witness_script): wsh = bh2u(sha256(bfh(witness_script))) return '00' + push_script(wsh)
def pubkey_to_address(txin_type, pubkey): if txin_type == 'p2pkh': return public_key_to_p2pkh(bfh(pubkey)) elif txin_type == 'p2wpkh': return public_key_to_p2wpkh(bfh(pubkey)) elif txin_type == 'p2wpkh-p2sh': scriptSig = p2wpkh_nested_script(pubkey) return hash160_to_p2sh(hash_160(bfh(scriptSig))) else: raise NotImplementedError(txin_type)
def redeem_script_to_address(txin_type, redeem_script): if txin_type == 'p2sh': return hash160_to_p2sh(hash_160(bfh(redeem_script))) elif txin_type == 'p2wsh': return script_to_p2wsh(redeem_script) elif txin_type == 'p2wsh-p2sh': scriptSig = p2wsh_nested_script(redeem_script) return hash160_to_p2sh(hash_160(bfh(scriptSig))) else: raise NotImplementedError(txin_type)
def script_to_address(script, *, net=None): from .transaction import get_address_from_output_script t, addr = get_address_from_output_script(bfh(script), net=net) assert t == TYPE_ADDRESS return addr
def address_to_script(addr, *, net=None): if net is None: net = constants.net witver, witprog = segwit_addr.decode(net.SEGWIT_HRP, addr) if witprog is not None: if not (0 <= witver <= 16): raise BitcoinException('impossible witness version: {}'.format(witver)) OP_n = witver + 0x50 if witver > 0 else 0 script = bh2u(bytes([OP_n])) script += push_script(bh2u(bytes(witprog))) return script addrtype, hash_160 = b58_address_to_hash160(addr) if addrtype == net.ADDRTYPE_P2PKH: script = '76a9' # op_dup, op_hash_160 script += push_script(bh2u(hash_160)) script += '88ac' # op_equalverify, op_checksig elif addrtype == net.ADDRTYPE_P2SH: script = 'a9' # op_hash_160 script += push_script(bh2u(hash_160)) script += '87' # op_equal else: raise BitcoinException('unknown address type: {}'.format(addrtype)) return script
def address_to_scripthash(addr): script = address_to_script(addr) return script_to_scripthash(script)
def script_to_scripthash(script): h = sha256(bytes.fromhex(script))[0:32] return bh2u(bytes(reversed(h)))
def public_key_to_p2pk_script(pubkey): script = push_script(pubkey) script += 'ac' # op_checksig return script
b58chars = b'123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' assert len(b58chars) == 58
b43chars = b'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ$*+-./:' assert len(b43chars) == 43
def base_encode(v, base): """ encode v, which is a string of bytes, to base58.""" assert_bytes(v) if base not in (58, 43): raise ValueError('not supported base: {}'.format(base)) chars = b58chars if base == 43: chars = b43chars long_value = 0 for (i, c) in enumerate(v[::-1]): long_value += (256*i) c result = bytearray() while long_value >= base: div, mod = divmod(long_value, base) result.append(chars[mod]) long_value = div result.append(chars[long_value])
# leading 0-bytes in the input become leading-1s
nPad = 0
for c in v:
if c == 0x00:
nPad += 1
else:
break
result.extend([chars[0]] * nPad)
result.reverse()
return result.decode('ascii')
def base_decode(v, length, base): """ decode v into a string of len bytes."""
v = to_bytes(v, 'ascii')
if base not in (58, 43):
raise ValueError('not supported base: {}'.format(base))
chars = __b58chars
if base == 43:
chars = __b43chars
long_value = 0
for (i, c) in enumerate(v[::-1]):
digit = chars.find(bytes([c]))
if digit == -1:
raise ValueError('Forbidden character {} for base {}'.format(c, base))
long_value += digit * (base**i)
result = bytearray()
while long_value >= 256:
div, mod = divmod(long_value, 256)
result.append(mod)
long_value = div
result.append(long_value)
nPad = 0
for c in v:
if c == chars[0]:
nPad += 1
else:
break
result.extend(b'\x00' * nPad)
if length is not None and len(result) != length:
return None
result.reverse()
return bytes(result)
class InvalidChecksum(Exception): pass
def EncodeBase58Check(vchIn): hash = Hash(vchIn) return base_encode(vchIn + hash[0:4], base=58)
def DecodeBase58Check(psz): vchRet = base_decode(psz, None, base=58) key = vchRet[0:-4] csum = vchRet[-4:] hash = Hash(key) cs32 = hash[0:4] if cs32 != csum: raise InvalidChecksum('expected {}, actual {}'.format(bh2u(cs32), bh2u(csum))) else: return key
SCRIPT_TYPES = { 'p2pkh':48, 'p2wpkh':1, 'p2wpkh-p2sh':2, 'p2sh':50, 'p2wsh':6, 'p2wsh-p2sh':7 }
def serialize_privkey(secret, compressed, txin_type, internal_use=False): if internal_use: prefix = bytes([(SCRIPT_TYPES[txin_type] + constants.net.WIF_PREFIX) & 255]) else: prefix = bytes([(SCRIPT_TYPES['p2pkh'] + constants.net.WIF_PREFIX) & 255]) suffix = b'\01' if compressed else b'' vchIn = prefix + secret + suffix base58_wif = EncodeBase58Check(vchIn) if internal_use: return base58_wif else: return '{}:{}'.format(txin_type, base58_wif)
def deserialize_privkey(key): if is_minikey(key): return 'p2pkh', minikey_to_private_key(key), True
txin_type = None
if ':' in key:
txin_type, key = key.split(sep=':', maxsplit=1)
if txin_type not in SCRIPT_TYPES:
raise BitcoinException('unknown script type: {}'.format(txin_type))
try:
vch = DecodeBase58Check(key)
except BaseException:
neutered_privkey = str(key)[:3] + '..' + str(key)[-2:]
raise BitcoinException("cannot deserialize privkey {}"
.format(neutered_privkey))
if txin_type is None:
# keys exported in version 3.0.x encoded script type in first byte
txin_type = inv_dict(SCRIPT_TYPES)[vch[0] - constants.net.WIF_PREFIX]
else:
# all other keys must have a fixed first byte
if vch[0] != (SCRIPT_TYPES['p2pkh'] + constants.net.WIF_PREFIX) & 255:
raise BitcoinException('invalid prefix ({}) for WIF key'.format(vch[0]))
if len(vch) not in [33, 34]:
raise BitcoinException('invalid vch len for WIF key: {}'.format(len(vch)))
compressed = len(vch) == 34
return txin_type, vch[1:33], compressed
def regenerate_key(pk): assert len(pk) == 32 return EC_KEY(pk)
def GetPubKey(pubkey, compressed=False): return i2o_ECPublicKey(pubkey, compressed)
def GetSecret(pkey): return bfh('%064x' % pkey.secret)
def is_compressed(sec): return deserialize_privkey(sec)[2]
def public_key_from_private_key(pk, compressed): pkey = regenerate_key(pk) public_key = GetPubKey(pkey.pubkey, compressed) return bh2u(public_key)
def address_from_private_key(sec): txin_type, privkey, compressed = deserialize_privkey(sec) public_key = public_key_from_private_key(privkey, compressed) return pubkey_to_address(txin_type, public_key)
def is_segwit_address(addr): try: witver, witprog = segwit_addr.decode(constants.net.SEGWIT_HRP, addr) except Exception as e: return False return witprog is not None
def is_b58_address(addr): try: addrtype, h = b58_address_to_hash160(addr) except Exception as e: return False if addrtype not in [constants.net.ADDRTYPE_P2PKH, constants.net.ADDRTYPE_P2SH]: return False return addr == hash160_to_b58_address(h, addrtype)
def is_address(addr): return is_segwit_address(addr) or is_b58_address(addr)
def is_private_key(key): try: k = deserialize_privkey(key) return k is not False except: return False
########### end pywallet functions #######################
def is_minikey(text):
# permits any length of 20 or more provided the minikey is valid.
# A valid minikey must begin with an 'S', be in base58, and when
# suffixed with '?' have its SHA256 hash begin with a zero byte.
# They are widely used in Casascius physical bitcoins.
return (len(text) >= 20 and text[0] == 'S'
and all(ord(c) in __b58chars for c in text)
and sha256(text + '?')[0] == 0x00)
def minikey_to_private_key(text): return sha256(text)
from ecdsa.ecdsa import curve_secp256k1, generator_secp256k1 from ecdsa.curves import SECP256k1 from ecdsa.ellipticcurve import Point from ecdsa.util import string_to_number, number_to_string
def msg_magic(message): length = bfh(var_int(len(message))) return b"\x19Litecoin Signed Message:\n" + length + message
def verify_message(address, sig, message): assert_bytes(sig, message) try: h = Hash(msg_magic(message)) public_key, compressed = pubkey_from_signature(sig, h)
pubkey = point_to_ser(public_key.pubkey.point, compressed)
for txin_type in ['p2pkh','p2wpkh','p2wpkh-p2sh']:
addr = pubkey_to_address(txin_type, bh2u(pubkey))
if address == addr:
break
else:
raise Exception("Bad signature")
# check message
public_key.verify_digest(sig[1:], h, sigdecode = ecdsa.util.sigdecode_string)
return True
except Exception as e:
print_error("Verification error: {0}".format(e))
return False
def encrypt_message(message, pubkey, magic=b'BIE1'): return EC_KEY.encrypt_message(message, bfh(pubkey), magic)
def chunks(l, n): return [l[i:i+n] for i in range(0, len(l), n)]
def ECC_YfromX(x,curved=curve_secp256k1, odd=True): _p = curved.p() _a = curved.a() _b = curved.b() for offset in range(128): Mx = x + offset My2 = pow(Mx, 3, _p) + _a * pow(Mx, 2, _p) + _b % _p My = pow(My2, (_p+1)//4, _p )
if curved.contains_point(Mx,My):
if odd == bool(My&1):
return [My,offset]
return [_p-My,offset]
raise Exception('ECC_YfromX: No Y found')
def negative_point(P): return Point( P.curve(), P.x(), -P.y(), P.order() )
def point_to_ser(P, comp=True ): if comp: return bfh( ('%02x'%(2+(P.y()&1)))+('%064x'%P.x()) ) return bfh( '04'+('%064x'%P.x())+('%064x'%P.y()) )
def ser_to_point(Aser): curve = curve_secp256k1 generator = generator_secp256k1 _r = generator.order() assert Aser[0] in [0x02, 0x03, 0x04] if Aser[0] == 0x04: return Point( curve, string_to_number(Aser[1:33]), string_to_number(Aser[33:]), _r ) Mx = string_to_number(Aser[1:]) return Point( curve, Mx, ECC_YfromX(Mx, curve, Aser[0] == 0x03)[0], _r )
class MyVerifyingKey(ecdsa.VerifyingKey): @classmethod def from_signature(klass, sig, recid, h, curve): """ See http://www.secg.org/download/aid-780/sec1-v2.pdf, chapter 4.1.6 """ from ecdsa import util, numbertheory from . import msqr curveFp = curve.curve G = curve.generator order = G.order()
r, s = util.sigdecode_string(sig, order)
# 1.1
x = r + (recid//2) * order
# 1.3
alpha = ( x * x * x + curveFp.a() * x + curveFp.b() ) % curveFp.p()
beta = msqr.modular_sqrt(alpha, curveFp.p())
y = beta if (beta - recid) % 2 == 0 else curveFp.p() - beta
# 1.4 the constructor checks that nR is at infinity
R = Point(curveFp, x, y, order)
# 1.5 compute e from message:
e = string_to_number(h)
minus_e = -e % order
# 1.6 compute Q = r^-1 (sR - eG)
inv_r = numbertheory.inverse_mod(r,order)
Q = inv_r * ( s * R + minus_e * G )
return klass.from_public_point( Q, curve )
def pubkey_from_signature(sig, h): if len(sig) != 65: raise Exception("Wrong encoding") nV = sig[0] if nV < 27 or nV >= 35: raise Exception("Bad encoding") if nV >= 31: compressed = True nV -= 4 else: compressed = False recid = nV - 27 return MyVerifyingKey.from_signature(sig[1:], recid, h, curve = SECP256k1), compressed
class MySigningKey(ecdsa.SigningKey): """Enforce low S values in signatures"""
def sign_number(self, number, entropy=None, k=None):
curve = SECP256k1
G = curve.generator
order = G.order()
r, s = ecdsa.SigningKey.sign_number(self, number, entropy, k)
if s > order//2:
s = order - s
return r, s
class EC_KEY(object):
def __init__( self, k ):
secret = string_to_number(k)
self.pubkey = ecdsa.ecdsa.Public_key( generator_secp256k1, generator_secp256k1 * secret )
self.privkey = ecdsa.ecdsa.Private_key( self.pubkey, secret )
self.secret = secret
def get_public_key(self, compressed=True):
return bh2u(point_to_ser(self.pubkey.point, compressed))
def sign(self, msg_hash):
private_key = MySigningKey.from_secret_exponent(self.secret, curve = SECP256k1)
public_key = private_key.get_verifying_key()
signature = private_key.sign_digest_deterministic(msg_hash, hashfunc=hashlib.sha256, sigencode = ecdsa.util.sigencode_string)
assert public_key.verify_digest(signature, msg_hash, sigdecode = ecdsa.util.sigdecode_string)
return signature
def sign_message(self, message, is_compressed):
message = to_bytes(message, 'utf8')
signature = self.sign(Hash(msg_magic(message)))
for i in range(4):
sig = bytes([27 + i + (4 if is_compressed else 0)]) + signature
try:
self.verify_message(sig, message)
return sig
except Exception as e:
continue
else:
raise Exception("error: cannot sign message")
def verify_message(self, sig, message):
assert_bytes(message)
h = Hash(msg_magic(message))
public_key, compressed = pubkey_from_signature(sig, h)
# check public key
if point_to_ser(public_key.pubkey.point, compressed) != point_to_ser(self.pubkey.point, compressed):
raise Exception("Bad signature")
# check message
public_key.verify_digest(sig[1:], h, sigdecode = ecdsa.util.sigdecode_string)
# ECIES encryption/decryption methods; AES-128-CBC with PKCS7 is used as the cipher; hmac-sha256 is used as the mac
@classmethod
def encrypt_message(self, message, pubkey, magic=b'BIE1'):
assert_bytes(message)
pk = ser_to_point(pubkey)
if not ecdsa.ecdsa.point_is_valid(generator_secp256k1, pk.x(), pk.y()):
raise Exception('invalid pubkey')
ephemeral_exponent = number_to_string(ecdsa.util.randrange(pow(2,256)), generator_secp256k1.order())
ephemeral = EC_KEY(ephemeral_exponent)
ecdh_key = point_to_ser(pk * ephemeral.privkey.secret_multiplier)
key = hashlib.sha512(ecdh_key).digest()
iv, key_e, key_m = key[0:16], key[16:32], key[32:]
ciphertext = aes_encrypt_with_iv(key_e, iv, message)
ephemeral_pubkey = bfh(ephemeral.get_public_key(compressed=True))
encrypted = magic + ephemeral_pubkey + ciphertext
mac = hmac.new(key_m, encrypted, hashlib.sha256).digest()
return base64.b64encode(encrypted + mac)
def decrypt_message(self, encrypted, magic=b'BIE1'):
encrypted = base64.b64decode(encrypted)
if len(encrypted) < 85:
raise Exception('invalid ciphertext: length')
magic_found = encrypted[:4]
ephemeral_pubkey = encrypted[4:37]
ciphertext = encrypted[37:-32]
mac = encrypted[-32:]
if magic_found != magic:
raise Exception('invalid ciphertext: invalid magic bytes')
try:
ephemeral_pubkey = ser_to_point(ephemeral_pubkey)
except AssertionError as e:
raise Exception('invalid ciphertext: invalid ephemeral pubkey')
if not ecdsa.ecdsa.point_is_valid(generator_secp256k1, ephemeral_pubkey.x(), ephemeral_pubkey.y()):
raise Exception('invalid ciphertext: invalid ephemeral pubkey')
ecdh_key = point_to_ser(ephemeral_pubkey * self.privkey.secret_multiplier)
key = hashlib.sha512(ecdh_key).digest()
iv, key_e, key_m = key[0:16], key[16:32], key[32:]
if mac != hmac.new(key_m, encrypted[:-32], hashlib.sha256).digest():
raise InvalidPassword()
return aes_decrypt_with_iv(key_e, iv, ciphertext)
###################################### BIP32 ##############################
random_seed = lambda n: "%032x"%ecdsa.util.randrange( pow(2,n) ) BIP32_PRIME = 0x80000000
def get_pubkeys_from_secret(secret):
private_key = ecdsa.SigningKey.from_string( secret, curve = SECP256k1 )
public_key = private_key.get_verifying_key()
K = public_key.to_string()
K_compressed = GetPubKey(public_key.pubkey,True)
return K, K_compressed
def CKD_priv(k, c, n): is_prime = n & BIP32_PRIME return _CKD_priv(k, c, bfh(rev_hex(int_to_hex(n,4))), is_prime)
def _CKD_priv(k, c, s, is_prime): order = generator_secp256k1.order() keypair = EC_KEY(k) cK = GetPubKey(keypair.pubkey,True) data = bytes([0]) + k + s if is_prime else cK + s I = hmac.new(c, data, hashlib.sha512).digest() k_n = number_to_string( (string_to_number(I[0:32]) + string_to_number(k)) % order , order ) c_n = I[32:] return k_n, c_n
def CKD_pub(cK, c, n): if n & BIP32_PRIME: raise return _CKD_pub(cK, c, bfh(rev_hex(int_to_hex(n,4))))
def _CKD_pub(cK, c, s): order = generator_secp256k1.order() I = hmac.new(c, cK + s, hashlib.sha512).digest() curve = SECP256k1 pubkey_point = string_to_number(I[0:32])*curve.generator + ser_to_point(cK) public_key = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 ) c_n = I[32:] cK_n = GetPubKey(public_key.pubkey,True) return cK_n, c_n
def xprv_header(xtype, *, net=None): if net is None: net = constants.net return bfh("%08x" % net.XPRV_HEADERS[xtype])
def xpub_header(xtype, *, net=None): if net is None: net = constants.net return bfh("%08x" % net.XPUB_HEADERS[xtype])
def serialize_xprv(xtype, c, k, depth=0, fingerprint=b'\x00'4, child_number=b'\x00'4, *, net=None): xprv = xprv_header(xtype, net=net) \
def serialize_xpub(xtype, c, cK, depth=0, fingerprint=b'\x00'4, child_number=b'\x00'4, *, net=None): xpub = xpub_header(xtype, net=net) \
def deserialize_xkey(xkey, prv, *, net=None): if net is None: net = constants.net xkey = DecodeBase58Check(xkey) if len(xkey) != 78: raise BitcoinException('Invalid length for extended key: {}' .format(len(xkey))) depth = xkey[4] fingerprint = xkey[5:9] child_number = xkey[9:13] c = xkey[13:13+32] header = int('0x' + bh2u(xkey[0:4]), 16) headers = net.XPRV_HEADERS if prv else net.XPUB_HEADERS if header not in headers.values(): raise BitcoinException('Invalid extended key format: {}' .format(hex(header))) xtype = list(headers.keys())[list(headers.values()).index(header)] n = 33 if prv else 32 K_or_k = xkey[13+n:] return xtype, depth, fingerprint, child_number, c, K_or_k
def deserialize_xpub(xkey, *, net=None): return deserialize_xkey(xkey, False, net=net)
def deserialize_xprv(xkey, *, net=None): return deserialize_xkey(xkey, True, net=net)
def xpub_type(x): return deserialize_xpub(x)[0]
def is_xpub(text): try: deserialize_xpub(text) return True except: return False
def is_xprv(text): try: deserialize_xprv(text) return True except: return False
def xpub_from_xprv(xprv): xtype, depth, fingerprint, child_number, c, k = deserialize_xprv(xprv) K, cK = get_pubkeys_from_secret(k) return serialize_xpub(xtype, c, cK, depth, fingerprint, child_number)
def bip32_root(seed, xtype): I = hmac.new(b"Bitcoin seed", seed, hashlib.sha512).digest() master_k = I[0:32] master_c = I[32:] K, cK = get_pubkeys_from_secret(master_k) xprv = serialize_xprv(xtype, master_c, master_k) xpub = serialize_xpub(xtype, master_c, cK) return xprv, xpub
def xpub_from_pubkey(xtype, cK): assert cK[0] in [0x02, 0x03] return serialize_xpub(xtype, b'\x00'*32, cK)
def bip32_derivation(s): if not s.startswith('m/'): raise ValueError('invalid bip32 derivation path: {}'.format(s)) s = s[2:] for n in s.split('/'): if n == '': continue i = int(n[:-1]) + BIP32_PRIME if n[-1] == "'" else int(n) yield i
def is_bip32_derivation(x): try: [ i for i in bip32_derivation(x)] return True except : return False
def bip32_private_derivation(xprv, branch, sequence): if not sequence.startswith(branch): raise ValueError('incompatible branch ({}) and sequence ({})' .format(branch, sequence)) if branch == sequence: return xprv, xpub_from_xprv(xprv) xtype, depth, fingerprint, child_number, c, k = deserialize_xprv(xprv) sequence = sequence[len(branch):] for n in sequence.split('/'): if n == '': continue i = int(n[:-1]) + BIP32_PRIME if n[-1] == "'" else int(n) parent_k = k k, c = CKDpriv(k, c, i) depth += 1 , parent_cK = get_pubkeys_from_secret(parent_k) fingerprint = hash_160(parent_cK)[0:4] child_number = bfh("%08X"%i) K, cK = get_pubkeys_from_secret(k) xpub = serialize_xpub(xtype, c, cK, depth, fingerprint, child_number) xprv = serialize_xprv(xtype, c, k, depth, fingerprint, child_number) return xprv, xpub
def bip32_public_derivation(xpub, branch, sequence): xtype, depth, fingerprint, child_number, c, cK = deserialize_xpub(xpub) if not sequence.startswith(branch): raise ValueError('incompatible branch ({}) and sequence ({})' .format(branch, sequence)) sequence = sequence[len(branch):] for n in sequence.split('/'): if n == '': continue i = int(n) parent_cK = cK cK, c = CKD_pub(cK, c, i) depth += 1 fingerprint = hash_160(parent_cK)[0:4] child_number = bfh("%08X"%i) return serialize_xpub(xtype, c, cK, depth, fingerprint, child_number)
def bip32_private_key(sequence, k, chain): for i in sequence: k, chain = CKD_priv(k, chain, i) return k
Hello, im want to do a Bitcoin Javascript transaction but get the error:
Error: CORS request rejected: https://test-insight.bitpay.com/api/addrs/utxo
Are there any solutions? Thanks