python crc32两种校验方式

发布时间:2019-09-06 08:59:50编辑:auto阅读(2341)

    python crc32有两种校验.第一种是assii码校验第二种是16进制校验.

    import binascii
    
    #https://www.cnblogs.com/kerndev/p/5537379.html
    #https://stackoverflow.com/questions/5557214/crc32-checksum-in-python-with-hex-input
    def crc32asii(v):
        return '0x%8x' % (binascii.crc32(v) & 0xffffffff)
    
    
    def crc2hex(crc): 
        return '%08x' % (binascii.crc32(binascii.a2b_hex(crc)) & 0xffffffff) 
    
    
    s='1234567890'
    b = bytes(s, encoding='utf-8')
    print(crc32asii(b))
    
    #1234567890的16进制为499602D2
    d='499602D2'
    print(crc2hex(d))

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