VB中实现MD5加密[5]

[入库:2005年8月18日] [更新:2007年3月24日]

本文简介:选择自 bucher 的 blog

    ff a, b, c, d, x(8), s11, 1770035416
    ff d, a, b, c, x(9), s12, -1958414417
    ff c, d, a, b, x(10), s13, -42063
    ff b, c, d, a, x(11), s14, -1990404162
    ff a, b, c, d, x(12), s11, 1804603682
    ff d, a, b, c, x(13), s12, -40341101
    ff c, d, a, b, x(14), s13, -1502002290
    ff b, c, d, a, x(15), s14, 1236535329
   
    ' round 2
    gg a, b, c, d, x(1), s21, -165796510
    gg d, a, b, c, x(6), s22, -1069501632
    gg c, d, a, b, x(11), s23, 643717713
    gg b, c, d, a, x(0), s24, -373897302
    gg a, b, c, d, x(5), s21, -701558691
    gg d, a, b, c, x(10), s22, 38016083
    gg c, d, a, b, x(15), s23, -660478335
    gg b, c, d, a, x(4), s24, -405537848
    gg a, b, c, d, x(9), s21, 568446438
    gg d, a, b, c, x(14), s22, -1019803690
    gg c, d, a, b, x(3), s23, -187363961
    gg b, c, d, a, x(8), s24, 1163531501
    gg a, b, c, d, x(13), s21, -1444681467
    gg d, a, b, c, x(2), s22, -51403784
    gg c, d, a, b, x(7), s23, 1735328473
    gg b, c, d, a, x(12), s24, -1926607734
   
    ' round 3
    hh a, b, c, d, x(5), s31, -378558
    hh d, a, b, c, x(8), s32, -2022574463
    hh c, d, a, b, x(11), s33, 1839030562
    hh b, c, d, a, x(14), s34, -35309556
    hh a, b, c, d, x(1), s31, -1530992060
    hh d, a, b, c, x(4), s32, 1272893353
    hh c, d, a, b, x(7), s33, -155497632
    hh b, c, d, a, x(10), s34, -1094730640
    hh a, b, c, d, x(13), s31, 681279174
    hh d, a, b, c, x(0), s32, -358537222
    hh c, d, a, b, x(3), s33, -722521979
    hh b, c, d, a, x(6), s34, 76029189
    hh a, b, c, d, x(9), s31, -640364487
    hh d, a, b, c, x(12), s32, -421815835
    hh c, d, a, b, x(15), s33, 530742520
    hh b, c, d, a, x(2), s34, -995338651
   
    ' round 4
    ii a, b, c, d, x(0), s41, -198630844
    ii d, a, b, c, x(7), s42, 1126891415
    ii c, d, a, b, x(14), s43, -1416354905
    ii b, c, d, a, x(5), s44, -57434055
    ii a, b, c, d, x(12), s41, 1700485571
    ii d, a, b, c, x(3), s42, -1894986606
    ii c, d, a, b, x(10), s43, -1051523
    ii b, c, d, a, x(1), s44, -2054922799
    ii a, b, c, d, x(8), s41, 1873313359
    ii d, a, b, c, x(15), s42, -30611744
    ii c, d, a, b, x(6), s43, -1560198380
    ii b, c, d, a, x(13), s44, 1309151649
    ii a, b, c, d, x(4), s41, -145523070
    ii d, a, b, c, x(11), s42, -1120210379
    ii c, d, a, b, x(2), s43, 718787259
    ii b, c, d, a, x(9), s44, -343485551
   
   
    state(1) = longoverflowadd(state(1), a)
    state(2) = longoverflowadd(state(2), b)
    state(3) = longoverflowadd(state(3), c)
    state(4) = longoverflowadd(state(4), d)

'  /* zeroize sensitive information.
'*/
'  md5_memset ((pointer)x, 0, sizeof (x));
   
end sub

private sub decode(length as integer, outputbuffer() as long, inputbuffer() as byte)
    dim intdblindex as integer
    dim intbyteindex as integer
    dim dblsum as double
   
    intdblindex = 0
    for intbyteindex = 0 to length - 1 step 4
        dblsum = inputbuffer(intbyteindex) + _
                                    inputbuffer(intbyteindex + 1) * 256# + _
                                    inputbuffer(intbyteindex + 2) * 65536# + _

本文关键:MD5,VB6
 

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