Function decodeAddress

src/addresses.py:149–239

(address)

    return 'BM-'+ encodeBase58(asInt)

def decodeAddress(address):
    #returns (status, address version number, stream number, data (almost certainly a ripe hash))

    address = str(address).strip()

    if address[:3] == 'BM-':
        integer = decodeBase58(address[3:])
    else:
        integer = decodeBase58(address)
    if integer == 0:
        status = 'invalidcharacters'
        return status,0,0,""
    #after converting to hex, the string will be prepended with a 0x and appended with a L
    hexdata = hex(integer)[2:-1]

    if len(hexdata) % 2 != 0:
        hexdata = '0' + hexdata

    #print 'hexdata', hexdata

    data = unhexlify(hexdata)
    checksum = data[-4:]

    sha = hashlib.new('sha512')
    sha.update(data[:-4])
    currentHash = sha.digest()
    #print 'sha after first hashing: ', sha.hexdigest()
    sha = hashlib.new('sha512')
    sha.update(currentHash)
    #print 'sha after second hashing: ', sha.hexdigest()

    if checksum != sha.digest()[0:4]:
        status = 'checksumfailed'
        return status,0,0,""
    #else:
    #    print 'checksum PASSED'

    try:
        addressVersionNumber, bytesUsedByVersionNumber = decodeVarint(data[:9])
    except varintDecodeError as e:
        logger.error(str(e))
        status = 'varintmalformed'
        return status,0,0,""
    #print 'addressVersionNumber', addressVersionNumber
    #print 'bytesUsedByVersionNumber', bytesUsedByVersionNumber

    if addressVersionNumber > 4:
        logger.error('cannot decode address version numbers this high')
        status = 'versiontoohigh'
        return status,0,0,""
    elif addressVersionNumber == 0:
        logger.error('cannot decode address version numbers of zero.')
        status = 'versiontoohigh'
        return status,0,0,""

    try:
        streamNumber, bytesUsedByStreamNumber = decodeVarint(data[bytesUsedByVersionNumber:])
    except varintDecodeError as e: