【安卓逆向】python版本 sha源码

# -*- coding: utf-8 -*-
import hashlib

# 0xffffffff is used to make sure numbers dont go over 32

def chunks(messageLength, chunkSize):
    chunkValues = []
    for i in range(0, len(messageLength), chunkSize):
        chunkValues.append(messageLength[i:i + chunkSize])

    return chunkValues


def leftRotate(chunk, rotateLength):
    return ((chunk << rotateLength) | (chunk >> (32 - rotateLength))) & 0xffffffff


def sha1Function(message):
    # 初始哈希值
    h0 = 0x67452301
    h1 = 0xEFCDAB89
    h2 = 0x98BADCFE
    h3 = 0x10325476
    h4 = 0xC3D2E1F0

    messageLength = ""

    # preprocessing
    for char in range(len(message)):
        messageLength += '{0:08b}'.format(ord(message[char]))

    temp = messageLength
    messageLength +=