Ejemplo n.º 1
0
def encrypt(mess_str, key_str):
    """
        Do encryption from string and return string.
    """
    # generating key list (K1...K32)
    key = cryptBlocks.getBlockFromString(key_str)
    # splitting message to blocks
    mess = cryptBlocks.getBlocksFromString(mess_str, blockSize)
    # for enable encrypting empty message%)
    if len(mess) == 0:
        mess.append(0x00)
    return cryptBlocks.getStringFromBlocks(cryptBlockList(mess, key))
Ejemplo n.º 2
0
def getHash(src):
    """
        Main function - calculates hash of the given blocks.
    """
    # wtf?! 256 bit, 32 byte! its amazin
    blockLength = 32
    mess = cryptBlocks.getBlocksFromString(src, blockLength)
    checksumE = 0
    # size of message modulo 2^256
    lengthL = 0
    stepH = 0
    if makeReport:
        i = 0
    for m in mess:
        if makeReport:
            i += 1
            reporter.addBold("Variables list for block N%d "%(i))
            reporter.addList(["m = "+hex(m),"H = "+hex(stepH),"L = "+hex(lengthL),"E = "+hex(checksumE)])
        stepH = stepFunction(stepH, m)
        lengthL = (lengthL + cryptBlocks.getSizeOfBlock(m))%(2**(blockLength*8))
        checksumE += (checksumE + m)%(2**(blockLength*8))
    stepH = stepFunction(stepH, lengthL)
    stepH = stepFunction(stepH, checksumE)
    return stepH