【计算apk的checksum】

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原创最新推荐文章于 2026-10-05 16:58:32 发布 322 阅读 AI 写同款· GEO 优化 ›

关于CheckSum的计算总和检验码，校验和。在数据处理和数据通信领域中，用于校验目的的一组数据项的和。1001 0110+0000 0110 =1001 0000 换算成十六进制就是90，所以CheckSum计算正确。如图，计算方式是Byte0+Byte1+Byte2+Byte3+Byte4+Byte5+Byte6。如果校验和的数值超过十六进制的FF,也就是255. 就要求其补码作为校验和.它通常是以十六进制为数制表示的形式,如下图，的校验和是: 66(十六进制)同时滚动发送的CheckSum值，也增加了信息通讯的安全性。... 阅读详情

计算apk的checksum方法

在这里插入图片描述

方法1：

def test_count_apk_checksum(server_checksum):
    print('\ntest_count_apk_checksum===')
    with open('c_download/app_download.apk', 'rb') as f:
        m = hashlib.new('SHA256', f.read()).hexdigest()       # read file by file object
        if server_checksum == m:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', m)
            print('app download success')
        else:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', m)
            print('app download failed')

方法2：

def test_count_apk_checksum(server_checksum):
    print('\ntest_count_apk_checksum===')
    with open('c_download/app_download.apk', 'rb') as f:
        m = hashlib.sha256(f.read()).hexdigest()        # read file by file object
        if server_checksum == m:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', m)
            print('app download success')
        else:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', m)
            print('app download failed')

方法3：

def test_count_apk_checksum(server_checksum):
    print('\ntest_count_apk_checksum===')
    with open('c_download/app_download.apk', 'rb') as f:
        m = hashlib.sha256()
        m.update(f.read())
        value_checksum = m.hexdigest()
        if server_checksum == value_checksum :
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', value_checksum )
            print('app download success')
        else:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', value_checksum )
            print('app download failed')

注意：

1.如果读取文件，不能直接放入文件的路径进行读入，否则计算的checksum值会是错误的，必须换成file的对象来读取
如：

def test_count_apk_checksum(server_checksum):
    print('\ntest_count_apk_checksum===')
    with open('c_download/app_download.apk', 'rb') as f:
        m = hashlib.new('SHA256', **b'c_download/app_download.apk'**).hexdigest()     # this method is not fit for reading file
        # m = hashlib.sha256(**'c_download/app_download.apk'**.encode()).hexdigest()    # this method is not fit for reading file
        if server_checksum == m:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', m)
            print('app download success')
        else:
            print('server_checksum: ', server_checksum)
            print('count_checksum: ', m)
            print('app download failed')