localkey.py 文件源码

def hashPassphrase(passphrase, hashFunc):
    passphrase = univ.OctetString(passphrase).asOctets()
    # noinspection PyDeprecation,PyCallingNonCallable
    hasher = hashFunc()
    ringBuffer = passphrase * (64 // len(passphrase) + 1)
    # noinspection PyTypeChecker
    ringBufferLen = len(ringBuffer)
    count = 0
    mark = 0
    while count < 16384:
        e = mark + 64
        if e < ringBufferLen:
            hasher.update(ringBuffer[mark:e])
            mark = e
        else:
            hasher.update(
                ringBuffer[mark:ringBufferLen] + ringBuffer[0:e - ringBufferLen]
            )
            mark = e - ringBufferLen
        count += 1
    return hasher.digest()