VB6.0中实现MD5加密算法代码
来源:优易学  2011-9-13 8:35:21   【优易学:中国教育考试门户网】   资料下载   IT书店

  Private Function WordToHex(lValue)
  Dim lByte
  Dim lCount
  For lCount = 0 To 3
  lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
  WordToHex = WordToHex & Right("0" & Hex(lByte), 2)
  Next
  End Function
  Public Function MD5(sMessage)
  m_lOnBits(0) = CLng(1)
  m_lOnBits(1) = CLng(3)
  m_lOnBits(2) = CLng(7)
  m_lOnBits(3) = CLng(15)
  m_lOnBits(4) = CLng(31)
  m_lOnBits(5) = CLng(63)
  m_lOnBits(6) = CLng(127)
  m_lOnBits(7) = CLng(255)
  m_lOnBits(8) = CLng(511)
  m_lOnBits(9) = CLng(1023)
  m_lOnBits(10) = CLng(2047)
  m_lOnBits(11) = CLng(4095)
  m_lOnBits(12) = CLng(8191)
  m_lOnBits(13) = CLng(16383)
  m_lOnBits(14) = CLng(32767)
  m_lOnBits(15) = CLng(65535)
  m_lOnBits(16) = CLng(131071)
  m_lOnBits(17) = CLng(262143)
  m_lOnBits(18) = CLng(524287)
  m_lOnBits(19) = CLng(1048575)
  m_lOnBits(20) = CLng(2097151)
  m_lOnBits(21) = CLng(4194303)
  m_lOnBits(22) = CLng(8388607)
  m_lOnBits(23) = CLng(16777215)
  m_lOnBits(24) = CLng(33554431)
  m_lOnBits(25) = CLng(67108863)
  m_lOnBits(26) = CLng(134217727)
  m_lOnBits(27) = CLng(268435455)
  m_lOnBits(28) = CLng(536870911)
  m_lOnBits(29) = CLng(1073741823)
  m_lOnBits(30) = CLng(2147483647)
  m_l2Power(0) = CLng(1)
  m_l2Power(1) = CLng(2)
  m_l2Power(2) = CLng(4)
  m_l2Power(3) = CLng(8)
  m_l2Power(4) = CLng(16)
  m_l2Power(5) = CLng(32)
  m_l2Power(6) = CLng(64)
  m_l2Power(7) = CLng(128)
  m_l2Power(8) = CLng(256)
  m_l2Power(9) = CLng(512)
  m_l2Power(10) = CLng(1024)
  m_l2Power(11) = CLng(2048)
  m_l2Power(12) = CLng(4096)
  m_l2Power(13) = CLng(8192)
  m_l2Power(14) = CLng(16384)
  m_l2Power(15) = CLng(32768)
  m_l2Power(16) = CLng(65536)
  m_l2Power(17) = CLng(131072)
  m_l2Power(18) = CLng(262144)
  m_l2Power(19) = CLng(524288)
  m_l2Power(20) = CLng(1048576)
  m_l2Power(21) = CLng(2097152)
  m_l2Power(22) = CLng(4194304)
  m_l2Power(23) = CLng(8388608)
  m_l2Power(24) = CLng(16777216)
  m_l2Power(25) = CLng(33554432)
  m_l2Power(26) = CLng(67108864)
  m_l2Power(27) = CLng(134217728)
  m_l2Power(28) = CLng(268435456)
  m_l2Power(29) = CLng(536870912)
  m_l2Power(30) = CLng(1073741824)

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