Python base58.b58decode方法代碼示例

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def get_private_key_from_wif(wif: str) -> bytes:
        """
        This interface is used to decode a WIF encode ECDSA private key.

        :param wif: a WIF encode private key.
        :return: a ECDSA private key in the form of bytes.
        """
        if wif is None or wif is "":
            raise Exception("none wif")
        data = base58.b58decode(wif)
        if len(data) != 38 or data[0] != 0x80 or data[33] != 0x01:
            raise Exception("wif wrong")
        checksum = Digest.hash256(data[0:34])
        for i in range(4):
            if data[len(data) - 4 + i] != checksum[i]:
                raise Exception("wif wrong")
        return data[1:33] 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def _specific_validation(self, val):
        invalid_chars = set(val) - self._alphabet
        if invalid_chars:
            # only 10 chars to shorten the output
            # TODO: Why does it need to be sorted
            to_print = sorted(invalid_chars)[:10]
            return 'should not contain the following chars {}{}'.format(
                to_print, ' (truncated)' if len(to_print) < len(invalid_chars) else '')
        if self.byte_lengths is not None:
            # TODO could impact performance, need to check
            b58len = len(base58.b58decode(val))
            if b58len not in self.byte_lengths:
                expected_length = list(self.byte_lengths)[0] if len(self.byte_lengths) == 1 \
                    else 'one of {}'.format(list(self.byte_lengths))
                return 'b58 decoded value length {} should be {}' \
                    .format(b58len, expected_length) 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def __init__(self, verkey, identifier=None):
        _verkey = verkey
        self._verkey = None
        self._vr = None
        if identifier:
            rawIdr = b58decode(identifier)
            if len(rawIdr) == 32 and not verkey:  # assume cryptonym
                verkey = identifier

            if not verkey:
                raise ValueError("'verkey' should be a non-empty string")
            if verkey[0] == '~':  # abbreviated
                verkey = b58encode(b58decode(identifier) +
                                   b58decode(verkey[1:])).decode("utf-8")
        try:
            self.verkey = verkey
        except Exception as ex:
            raise InvalidKey("verkey {}".format(_verkey)) from ex 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def wif_to_privkey(wif_key: str, dash_network: str):
    """
    Based on project: https://github.com/chaeplin/dashmnb with some changes related to usage of bitcoin library.
    """
    privkey_encoded = base58.b58decode(wif_key).hex()
    wif_prefix_cur = privkey_encoded[:2]
    wif_prefix_network = get_chain_params(dash_network).PREFIX_SECRET_KEY
    wif_prefix_network_str = wif_prefix_network.to_bytes(1, byteorder='big').hex()
    checksum_stored = privkey_encoded[-8:]

    vs = bytes.fromhex(privkey_encoded[:-8])
    checksum_actual = binascii.unhexlify(bitcoin.dbl_sha256(vs))[0:4]
    checksum_actual_str = checksum_actual.hex()

    if wif_prefix_cur == wif_prefix_network_str and checksum_stored == checksum_actual_str:
        privkey = privkey_encoded[2:-8]
        return privkey
    else:
        if wif_prefix_cur != wif_prefix_network_str:
            logging.warning('Private key and network prefixes differ. PK prefix: %s, network prefix: %s', wif_prefix_cur,
                            wif_prefix_network_str)
        if checksum_stored != checksum_actual_str:
            logging.warning('Invalid private key checksum. PK checksum: %s, required: %s', checksum_stored,
                            checksum_actual_str)
        return None 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def btc_addr_to_hash_160(btc_addr):
    """ Calculates the RIPEMD-160 hash from a given Bitcoin address

    :param btc_addr: Bitcoin address.
    :type btc_addr: str
    :return: The corresponding RIPEMD-160 hash.
    :rtype: hex str
    """

    # Base 58 decode the Bitcoin address.
    decoded_addr = b58decode(btc_addr)
    # Covert the address from bytes to hex.
    decoded_addr_hex = hexlify(decoded_addr)
    # Obtain the RIPEMD-160 hash by removing the first and four last bytes of the decoded address, corresponding to
    # the network version and the checksum of the address.
    h160 = decoded_addr_hex[2:-8]

    return h160 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def is_proof_verified(db_manager,
                      proof, path,
                      value, seq_no, txn_time):
    encoded_value = domain.encode_state_value(value, seq_no, txn_time)
    proof_nodes = base64.b64decode(proof[PROOF_NODES])
    root_hash = base58.b58decode(proof[ROOT_HASH])
    verified = db_manager.get_state(DOMAIN_LEDGER_ID).verify_state_proof(
        root_hash,
        path,
        encoded_value,
        proof_nodes,
        serialized=True
    )
    return verified


# Similar tests for Rich Schema objects are in indy_node/test/request_handlers/rich_schema 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def base58_decode(self):
        """Decode as Base58
        
        Base58 is a notation for encoding arbitrary byte data using a 
        restricted set of symbols that can be conveniently used by humans 
        and processed by computers.This property decodes raw data 
        into an ASCII Base58 string.
        
        Returns:
            Chepy: The Chepy object. 

        Examples:
            >>> Chepy("2UDrs31qcWSPi").base58_decode().output.decode()
            "some data"
        """
        self.state = base58.b58decode(self.state)
        return self 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def reissueAsset(self, Asset, quantity, reissuable=False, txFee=pywaves.DEFAULT_TX_FEE):
        timestamp = int(time.time() * 1000)
        sData = b'\5' + \
                base58.b58decode(self.publicKey) + \
                base58.b58decode(Asset.assetId) + \
                struct.pack(">Q", quantity) + \
                (b'\1' if reissuable else b'\0') + \
                struct.pack(">Q",txFee) + \
                struct.pack(">Q", timestamp)
        signature = crypto.sign(self.privateKey, sData)
        data = json.dumps({
            "senderPublicKey": self.publicKey,
            "assetId": Asset.assetId,
            "quantity": quantity,
            "timestamp": timestamp,
            "reissuable": reissuable,
            "fee": txFee,
            "signature": signature
        })
        req = self.pywaves.wrapper('/assets/broadcast/reissue', data)
        if self.pywaves.OFFLINE:
            return req
        else:
            return req.get('id', 'ERROR') 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def cancelOrderByID(self, assetPair, orderId):
        sData = base58.b58decode(self.publicKey) + \
                base58.b58decode(orderId)
        signature = crypto.sign(self.privateKey, sData)
        data = json.dumps({
            "sender": self.publicKey,
            "orderId": orderId,
            "signature": signature
        })
        req = self.pywaves.wrapper('/matcher/orderbook/%s/%s/cancel' % (pywaves.DEFAULT_CURRENCY if assetPair.asset1.assetId=='' else assetPair.asset1.assetId, pywaves.DEFAULT_CURRENCY if assetPair.asset2.assetId=='' else assetPair.asset2.assetId), data, host=self.pywaves.MATCHER)
        if self.pywaves.OFFLINE:
            return req
        else:
            id = -1
            if req['status'] == 'OrderCanceled':
                id = req['orderId']
                logging.info('Order Cancelled - ID: %s' % id)
            return id 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def get(self, address=None):
        if address is None:
            raise HTTPError(400, reason="No address")

        try:
            from_height = long(self.get_argument("from_height", 0))
        except:
            raise HTTPError(400)

        address_decoded = base58.b58decode(address)
        address_version = address_decoded[0]
        address_hash = address_decoded[1:21]

        request = {
            "id": random_id_number(),
            "command":"fetch_history",
            "params": [address_version, address_hash, from_height]
        }

        self.application._obelisk_handler.handle_request(self, request) 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def _check_decode(self, key_string, key_type=None) :
        '''    '''
        buffer = hexlify(base58.b58decode(key_string)).decode()
        chksum = buffer[-8:]
        key = buffer[:-8]
        if key_type == 'sha256x2' :
            # legacy
            first_sha = sha256(unhexlify(key))
            newChk = sha256(unhexlify(first_sha))[:8]
        else :
            check = key
            if key_type :
                check += hexlify(bytearray(key_type, 'utf-8')).decode()
            newChk = ripemd160(unhexlify(check))[:8]
        #print('newChk: '+newChk)
        if chksum != newChk :
            raise ValueError('checksums do not match: {0} != {1}'.format(chksum, newChk))
        return key 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def is_address(address: str) -> bool:
        raw_address = base58.b58decode(address)

        if len(raw_address) != Address.DISPLAY_BYTE_LENGTH:
            return False

        # split the identity into address and checksum
        address_raw = raw_address[:Address.BYTE_LENGTH]
        checksum = raw_address[Address.BYTE_LENGTH:]

        # calculate the expected checksum
        expected_checksum = Address._calculate_checksum(address_raw)

        if checksum != expected_checksum:
            return False

        return True 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def test_generate_output_split_half_recursive(user_pub, user2_pub, user3_pub):
    from bigchaindb.common.transaction import Output
    from cryptoconditions import Ed25519Sha256, ThresholdSha256

    expected_simple1 = Ed25519Sha256(public_key=b58decode(user_pub))
    expected_simple2 = Ed25519Sha256(public_key=b58decode(user2_pub))
    expected_simple3 = Ed25519Sha256(public_key=b58decode(user3_pub))

    expected = ThresholdSha256(threshold=2)
    expected.add_subfulfillment(expected_simple1)
    expected_threshold = ThresholdSha256(threshold=2)
    expected_threshold.add_subfulfillment(expected_simple2)
    expected_threshold.add_subfulfillment(expected_simple3)
    expected.add_subfulfillment(expected_threshold)

    cond = Output.generate([user_pub, [user2_pub, expected_simple3]], 1)
    assert cond.fulfillment.to_dict() == expected.to_dict() 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def test_generate_outputs_split_half_single_owner(user_pub,
                                                  user2_pub, user3_pub):
    from bigchaindb.common.transaction import Output
    from cryptoconditions import Ed25519Sha256, ThresholdSha256

    expected_simple1 = Ed25519Sha256(public_key=b58decode(user_pub))
    expected_simple2 = Ed25519Sha256(public_key=b58decode(user2_pub))
    expected_simple3 = Ed25519Sha256(public_key=b58decode(user3_pub))

    expected = ThresholdSha256(threshold=2)
    expected_threshold = ThresholdSha256(threshold=2)
    expected_threshold.add_subfulfillment(expected_simple2)
    expected_threshold.add_subfulfillment(expected_simple3)
    expected.add_subfulfillment(expected_threshold)
    expected.add_subfulfillment(expected_simple1)

    cond = Output.generate([[expected_simple2, user3_pub], user_pub], 1)
    assert cond.fulfillment.to_dict() == expected.to_dict() 

# 需要導入模塊: import base58 [as 別名]
# 或者: from base58 import b58decode [as 別名]
def base58decode(i):
    return base58.b58decode(str(i)).decode()