ASP标准MD5代码

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<%Private Const BITS_TO_A_BYTE = 8Private Const BYTES_TO_A_WORD = 4Private Const BITS_TO_A_WORD = 32Private m_lOnBits(30)Private m_l2Power(30) Private Function LShift(lValue, iShiftBits)    If iShiftBits = 0 Then        LShift = lValue        Exit Function    ElseIf iShiftBits = 31 Then        If lValue And 1 Then            LShift = &H80000000        Else            LShift = 0        End If        Exit Function    ElseIf iShiftBits < 0 Or iShiftBits > 31 Then        Err.Raise 6    End If    If (lValue And m_l2Power(31 - iShiftBits)) Then        LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or &H80000000    Else        LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))    End IfEnd FunctionPrivate Function RShift(lValue, iShiftBits)    If iShiftBits = 0 Then        RShift = lValue        Exit Function    ElseIf iShiftBits = 31 Then        If lValue And &H80000000 Then            RShift = 1        Else            RShift = 0        End If        Exit Function    ElseIf iShiftBits < 0 Or iShiftBits > 31 Then        Err.Raise 6    End If        RShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)    If (lValue And &H80000000) Then        RShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1)))    End IfEnd FunctionPrivate Function RotateLeft(lValue, iShiftBits)    RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))End FunctionPrivate Function AddUnsigned(lX, lY)    Dim lX4    Dim lY4    Dim lX8    Dim lY8    Dim lResult     lX8 = lX And &H80000000    lY8 = lY And &H80000000    lX4 = lX And &H40000000    lY4 = lY And &H40000000     lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)     If lX4 And lY4 Then        lResult = lResult Xor &H80000000 Xor lX8 Xor lY8    ElseIf lX4 Or lY4 Then        If lResult And &H40000000 Then            lResult = lResult Xor &HC0000000 Xor lX8 Xor lY8        Else            lResult = lResult Xor &H40000000 Xor lX8 Xor lY8        End If    Else        lResult = lResult Xor lX8 Xor lY8    End If     AddUnsigned = lResultEnd FunctionPrivate Function md5_F(x, y, z)    md5_F = (x And y) Or ((Not x) And z)End FunctionPrivate Function md5_G(x, y, z)    md5_G = (x And z) Or (y And (Not z))End FunctionPrivate Function md5_H(x, y, z)    md5_H = (x Xor y Xor z)End FunctionPrivate Function md5_I(x, y, z)    md5_I = (y Xor (x Or (Not z)))End FunctionPrivate Sub md5_FF(a, b, c, d, x, s, ac)    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac))    a = RotateLeft(a, s)    a = AddUnsigned(a, b)End SubPrivate Sub md5_GG(a, b, c, d, x, s, ac)    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac))    a = RotateLeft(a, s)    a = AddUnsigned(a, b)End SubPrivate Sub md5_HH(a, b, c, d, x, s, ac)    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac))    a = RotateLeft(a, s)    a = AddUnsigned(a, b)End SubPrivate Sub md5_II(a, b, c, d, x, s, ac)    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac))    a = RotateLeft(a, s)    a = AddUnsigned(a, b)End SubPrivate Function ConvertToWordArray(sMessage)    Dim lMessageLength    Dim lNumberOfWords    Dim lWordArray()    Dim lBytePosition    Dim lByteCount    Dim lWordCount        Const MODULUS_BITS = 512    Const CONGRUENT_BITS = 448        lMessageLength = Len(sMessage)        lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) \ BITS_TO_A_BYTE)) \ (MODULUS_BITS \ BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS \ BITS_TO_A_WORD)    ReDim lWordArray(lNumberOfWords - 1)        lBytePosition = 0    lByteCount = 0    Do Until lByteCount >= lMessageLength        lWordCount = lByteCount \ BYTES_TO_A_WORD        lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE        lWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(Asc(Mid(sMessage, lByteCount + 1, 1)), lBytePosition)        lByteCount = lByteCount + 1    Loop    lWordCount = lByteCount \ BYTES_TO_A_WORD    lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE    lWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(&H80, lBytePosition)    lWordArray(lNumberOfWords - 2) = LShift(lMessageLength, 3)    lWordArray(lNumberOfWords - 1) = RShift(lMessageLength, 29)        ConvertToWordArray = lWordArrayEnd FunctionPrivate 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)    NextEnd FunctionPublic 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)    Dim x    Dim k    Dim AA    Dim BB    Dim CC    Dim DD    Dim a    Dim b    Dim c    Dim d        Const S11 = 7    Const S12 = 12    Const S13 = 17    Const S14 = 22    Const S21 = 5    Const S22 = 9    Const S23 = 14    Const S24 = 20    Const S31 = 4    Const S32 = 11    Const S33 = 16    Const S34 = 23    Const S41 = 6    Const S42 = 10    Const S43 = 15    Const S44 = 21    x = ConvertToWordArray(sMessage)        a = &H67452301    b = &HEFCDAB89    c = &H98BADCFE    d = &H10325476    For k = 0 To UBound(x) Step 16        AA = a        BB = b        CC = c        DD = d            md5_FF a, b, c, d, x(k + 0), S11, &HD76AA478        md5_FF d, a, b, c, x(k + 1), S12, &HE8C7B756        md5_FF c, d, a, b, x(k + 2), S13, &H242070DB        md5_FF b, c, d, a, x(k + 3), S14, &HC1BDCEEE        md5_FF a, b, c, d, x(k + 4), S11, &HF57C0FAF        md5_FF d, a, b, c, x(k + 5), S12, &H4787C62A        md5_FF c, d, a, b, x(k + 6), S13, &HA8304613        md5_FF b, c, d, a, x(k + 7), S14, &HFD469501        md5_FF a, b, c, d, x(k + 8), S11, &H698098D8        md5_FF d, a, b, c, x(k + 9), S12, &H8B44F7AF        md5_FF c, d, a, b, x(k + 10), S13, &HFFFF5BB1        md5_FF b, c, d, a, x(k + 11), S14, &H895CD7BE        md5_FF a, b, c, d, x(k + 12), S11, &H6B901122        md5_FF d, a, b, c, x(k + 13), S12, &HFD987193        md5_FF c, d, a, b, x(k + 14), S13, &HA679438E        md5_FF b, c, d, a, x(k + 15), S14, &H49B40821            md5_GG a, b, c, d, x(k + 1), S21, &HF61E2562        md5_GG d, a, b, c, x(k + 6), S22, &HC040B340        md5_GG c, d, a, b, x(k + 11), S23, &H265E5A51        md5_GG b, c, d, a, x(k + 0), S24, &HE9B6C7AA        md5_GG a, b, c, d, x(k + 5), S21, &HD62F105D        md5_GG d, a, b, c, x(k + 10), S22, &H2441453        md5_GG c, d, a, b, x(k + 15), S23, &HD8A1E681        md5_GG b, c, d, a, x(k + 4), S24, &HE7D3FBC8        md5_GG a, b, c, d, x(k + 9), S21, &H21E1CDE6        md5_GG d, a, b, c, x(k + 14), S22, &HC33707D6        md5_GG c, d, a, b, x(k + 3), S23, &HF4D50D87        md5_GG b, c, d, a, x(k + 8), S24, &H455A14ED        md5_GG a, b, c, d, x(k + 13), S21, &HA9E3E905        md5_GG d, a, b, c, x(k + 2), S22, &HFCEFA3F8        md5_GG c, d, a, b, x(k + 7), S23, &H676F02D9        md5_GG b, c, d, a, x(k + 12), S24, &H8D2A4C8A                    md5_HH a, b, c, d, x(k + 5), S31, &HFFFA3942        md5_HH d, a, b, c, x(k + 8), S32, &H8771F681        md5_HH c, d, a, b, x(k + 11), S33, &H6D9D6122        md5_HH b, c, d, a, x(k + 14), S34, &HFDE5380C        md5_HH a, b, c, d, x(k + 1), S31, &HA4BEEA44        md5_HH d, a, b, c, x(k + 4), S32, &H4BDECFA9        md5_HH c, d, a, b, x(k + 7), S33, &HF6BB4B60        md5_HH b, c, d, a, x(k + 10), S34, &HBEBFBC70        md5_HH a, b, c, d, x(k + 13), S31, &H289B7EC6        md5_HH d, a, b, c, x(k + 0), S32, &HEAA127FA        md5_HH c, d, a, b, x(k + 3), S33, &HD4EF3085        md5_HH b, c, d, a, x(k + 6), S34, &H4881D05        md5_HH a, b, c, d, x(k + 9), S31, &HD9D4D039        md5_HH d, a, b, c, x(k + 12), S32, &HE6DB99E5        md5_HH c, d, a, b, x(k + 15), S33, &H1FA27CF8        md5_HH b, c, d, a, x(k + 2), S34, &HC4AC5665            md5_II a, b, c, d, x(k + 0), S41, &HF4292244        md5_II d, a, b, c, x(k + 7), S42, &H432AFF97        md5_II c, d, a, b, x(k + 14), S43, &HAB9423A7        md5_II b, c, d, a, x(k + 5), S44, &HFC93A039        md5_II a, b, c, d, x(k + 12), S41, &H655B59C3        md5_II d, a, b, c, x(k + 3), S42, &H8F0CCC92        md5_II c, d, a, b, x(k + 10), S43, &HFFEFF47D        md5_II b, c, d, a, x(k + 1), S44, &H85845DD1        md5_II a, b, c, d, x(k + 8), S41, &H6FA87E4F        md5_II d, a, b, c, x(k + 15), S42, &HFE2CE6E0        md5_II c, d, a, b, x(k + 6), S43, &HA3014314        md5_II b, c, d, a, x(k + 13), S44, &H4E0811A1        md5_II a, b, c, d, x(k + 4), S41, &HF7537E82        md5_II d, a, b, c, x(k + 11), S42, &HBD3AF235        md5_II c, d, a, b, x(k + 2), S43, &H2AD7D2BB        md5_II b, c, d, a, x(k + 9), S44, &HEB86D391            a = AddUnsigned(a, AA)        b = AddUnsigned(b, BB)        c = AddUnsigned(c, CC)        d = AddUnsigned(d, DD)    Next        MD5 = LCase(WordToHex(a) & WordToHex(b) & WordToHex(c) & WordToHex(d))    'MD5=LCase(WordToHex(b) & WordToHex(c))  'I crop this to fit 16byte database password :DEnd Function%>

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