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md5.asp
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<%
'***********************************************************
'md5_asp
'=======
'
'MD5 calculation (Classic ASP)
'
'* Source and acknowledgements: forked from Wikinaut/md5.vbs
'* Source URL: https://github.com/Wikinaut/md5.vbs
'* Please read the source "Wikinaut/md5.vbs" README.md for its source
'* ASP Include Tag for file: md5.asp
'* Test code: Response.Write(MD5("Test"),false)
'* Attribute: boolCase
'***********************************************************
Private Const BITS_TO_A_BYTE = 8
Private Const BYTES_TO_A_WORD = 4
Private Const BITS_TO_A_WORD = 32
Private mdf_lOnBits(30)
Private mdf_l2Power(30)
mdf_lOnBits(0) = CLng(1)
mdf_lOnBits(1) = CLng(3)
mdf_lOnBits(2) = CLng(7)
mdf_lOnBits(3) = CLng(15)
mdf_lOnBits(4) = CLng(31)
mdf_lOnBits(5) = CLng(63)
mdf_lOnBits(6) = CLng(127)
mdf_lOnBits(7) = CLng(255)
mdf_lOnBits(8) = CLng(511)
mdf_lOnBits(9) = CLng(1023)
mdf_lOnBits(10) = CLng(2047)
mdf_lOnBits(11) = CLng(4095)
mdf_lOnBits(12) = CLng(8191)
mdf_lOnBits(13) = CLng(16383)
mdf_lOnBits(14) = CLng(32767)
mdf_lOnBits(15) = CLng(65535)
mdf_lOnBits(16) = CLng(131071)
mdf_lOnBits(17) = CLng(262143)
mdf_lOnBits(18) = CLng(524287)
mdf_lOnBits(19) = CLng(1048575)
mdf_lOnBits(20) = CLng(2097151)
mdf_lOnBits(21) = CLng(4194303)
mdf_lOnBits(22) = CLng(8388607)
mdf_lOnBits(23) = CLng(16777215)
mdf_lOnBits(24) = CLng(33554431)
mdf_lOnBits(25) = CLng(67108863)
mdf_lOnBits(26) = CLng(134217727)
mdf_lOnBits(27) = CLng(268435455)
mdf_lOnBits(28) = CLng(536870911)
mdf_lOnBits(29) = CLng(1073741823)
mdf_lOnBits(30) = CLng(2147483647)
mdf_l2Power(0) = CLng(1)
mdf_l2Power(1) = CLng(2)
mdf_l2Power(2) = CLng(4)
mdf_l2Power(3) = CLng(8)
mdf_l2Power(4) = CLng(16)
mdf_l2Power(5) = CLng(32)
mdf_l2Power(6) = CLng(64)
mdf_l2Power(7) = CLng(128)
mdf_l2Power(8) = CLng(256)
mdf_l2Power(9) = CLng(512)
mdf_l2Power(10) = CLng(1024)
mdf_l2Power(11) = CLng(2048)
mdf_l2Power(12) = CLng(4096)
mdf_l2Power(13) = CLng(8192)
mdf_l2Power(14) = CLng(16384)
mdf_l2Power(15) = CLng(32768)
mdf_l2Power(16) = CLng(65536)
mdf_l2Power(17) = CLng(131072)
mdf_l2Power(18) = CLng(262144)
mdf_l2Power(19) = CLng(524288)
mdf_l2Power(20) = CLng(1048576)
mdf_l2Power(21) = CLng(2097152)
mdf_l2Power(22) = CLng(4194304)
mdf_l2Power(23) = CLng(8388608)
mdf_l2Power(24) = CLng(16777216)
mdf_l2Power(25) = CLng(33554432)
mdf_l2Power(26) = CLng(67108864)
mdf_l2Power(27) = CLng(134217728)
mdf_l2Power(28) = CLng(268435456)
mdf_l2Power(29) = CLng(536870912)
mdf_l2Power(30) = CLng(1073741824)
Private Function mdfLShift(lValue, iShiftBits)
If iShiftBits = 0 Then
mdfLShift = lValue
Exit Function
ElseIf iShiftBits = 31 Then
If lValue And 1 Then
mdfLShift = &H80000000
Else
mdfLShift = 0
End If
Exit Function
ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
Err.Raise 6
End If
If (lValue And mdf_l2Power(31 - iShiftBits)) Then
mdfLShift = ((lValue And mdf_lOnBits(31 - (iShiftBits + 1))) * mdf_l2Power(iShiftBits)) Or &H80000000
Else
mdfLShift = ((lValue And mdf_lOnBits(31 - iShiftBits)) * mdf_l2Power(iShiftBits))
End If
End Function
Private Function mdfRShift(lValue, iShiftBits)
If iShiftBits = 0 Then
mdfRShift = lValue
Exit Function
ElseIf iShiftBits = 31 Then
If lValue And &H80000000 Then
mdfRShift = 1
Else
mdfRShift = 0
End If
Exit Function
ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
Err.Raise 6
End If
mdfRShift = (lValue And &H7FFFFFFE) \ mdf_l2Power(iShiftBits)
If (lValue And &H80000000) Then
mdfRShift = (mdfRShift Or (&H40000000 \ mdf_l2Power(iShiftBits - 1)))
End If
End Function
Private Function mdfRotateLeft(lValue, iShiftBits)
mdfRotateLeft = mdfLShift(lValue, iShiftBits) Or mdfRShift(lValue, (32 - iShiftBits))
End Function
Private Function mdfAddUnsigned(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
mdfAddUnsigned = lResult
End Function
Private Function mdfF(x, y, z)
mdfF = (x And y) Or ((Not x) And z)
End Function
Private Function mdfG(x, y, z)
mdfG = (x And z) Or (y And (Not z))
End Function
Private Function mdfH(x, y, z)
mdfH = (x Xor y Xor z)
End Function
Private Function mdfI(x, y, z)
mdfI = (y Xor (x Or (Not z)))
End Function
Private Sub mdfFF(a, b, c, d, x, s, ac)
a = mdfAddUnsigned(a, mdfAddUnsigned(mdfAddUnsigned(mdfF(b, c, d), x), ac))
a = mdfRotateLeft(a, s)
a = mdfAddUnsigned(a, b)
End Sub
Private Sub mdfGG(a, b, c, d, x, s, ac)
a = mdfAddUnsigned(a, mdfAddUnsigned(mdfAddUnsigned(mdfG(b, c, d), x), ac))
a = mdfRotateLeft(a, s)
a = mdfAddUnsigned(a, b)
End Sub
Private Sub mdfHH(a, b, c, d, x, s, ac)
a = mdfAddUnsigned(a, mdfAddUnsigned(mdfAddUnsigned(mdfH(b, c, d), x), ac))
a = mdfRotateLeft(a, s)
a = mdfAddUnsigned(a, b)
End Sub
Private Sub mdfII(a, b, c, d, x, s, ac)
a = mdfAddUnsigned(a, mdfAddUnsigned(mdfAddUnsigned(mdfI(b, c, d), x), ac))
a = mdfRotateLeft(a, s)
a = mdfAddUnsigned(a, b)
End Sub
Private Function mdfConvertToWordArray(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 mdfLShift(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 mdfLShift(&H80, lBytePosition)
lWordArray(lNumberOfWords - 2) = mdfLShift(lMessageLength, 3)
lWordArray(lNumberOfWords - 1) = mdfRShift(lMessageLength, 29)
mdfConvertToWordArray = lWordArray
End Function
Private Function mdfWordToHex(lValue)
Dim lByte
Dim lCount
For lCount = 0 To 3
lByte = mdfRShift(lValue, lCount * BITS_TO_A_BYTE) And mdf_lOnBits(BITS_TO_A_BYTE - 1)
mdfWordToHex = mdfWordToHex & Right("0" & Hex(lByte), 2)
Next
End Function
Public Function MD5(sMessage, boolCase)
Dim x
Dim k
Dim AA
Dim BB
Dim CC
Dim DD
Dim a
Dim b
Dim c
Dim d
Dim rString
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 = mdfConvertToWordArray(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
mdfFF a, b, c, d, x(k + 0), S11, &HD76AA478
mdfFF d, a, b, c, x(k + 1), S12, &HE8C7B756
mdfFF c, d, a, b, x(k + 2), S13, &H242070DB
mdfFF b, c, d, a, x(k + 3), S14, &HC1BDCEEE
mdfFF a, b, c, d, x(k + 4), S11, &HF57C0FAF
mdfFF d, a, b, c, x(k + 5), S12, &H4787C62A
mdfFF c, d, a, b, x(k + 6), S13, &HA8304613
mdfFF b, c, d, a, x(k + 7), S14, &HFD469501
mdfFF a, b, c, d, x(k + 8), S11, &H698098D8
mdfFF d, a, b, c, x(k + 9), S12, &H8B44F7AF
mdfFF c, d, a, b, x(k + 10), S13, &HFFFF5BB1
mdfFF b, c, d, a, x(k + 11), S14, &H895CD7BE
mdfFF a, b, c, d, x(k + 12), S11, &H6B901122
mdfFF d, a, b, c, x(k + 13), S12, &HFD987193
mdfFF c, d, a, b, x(k + 14), S13, &HA679438E
mdfFF b, c, d, a, x(k + 15), S14, &H49B40821
mdfGG a, b, c, d, x(k + 1), S21, &HF61E2562
mdfGG d, a, b, c, x(k + 6), S22, &HC040B340
mdfGG c, d, a, b, x(k + 11), S23, &H265E5A51
mdfGG b, c, d, a, x(k + 0), S24, &HE9B6C7AA
mdfGG a, b, c, d, x(k + 5), S21, &HD62F105D
mdfGG d, a, b, c, x(k + 10), S22, &H2441453
mdfGG c, d, a, b, x(k + 15), S23, &HD8A1E681
mdfGG b, c, d, a, x(k + 4), S24, &HE7D3FBC8
mdfGG a, b, c, d, x(k + 9), S21, &H21E1CDE6
mdfGG d, a, b, c, x(k + 14), S22, &HC33707D6
mdfGG c, d, a, b, x(k + 3), S23, &HF4D50D87
mdfGG b, c, d, a, x(k + 8), S24, &H455A14ED
mdfGG a, b, c, d, x(k + 13), S21, &HA9E3E905
mdfGG d, a, b, c, x(k + 2), S22, &HFCEFA3F8
mdfGG c, d, a, b, x(k + 7), S23, &H676F02D9
mdfGG b, c, d, a, x(k + 12), S24, &H8D2A4C8A
mdfHH a, b, c, d, x(k + 5), S31, &HFFFA3942
mdfHH d, a, b, c, x(k + 8), S32, &H8771F681
mdfHH c, d, a, b, x(k + 11), S33, &H6D9D6122
mdfHH b, c, d, a, x(k + 14), S34, &HFDE5380C
mdfHH a, b, c, d, x(k + 1), S31, &HA4BEEA44
mdfHH d, a, b, c, x(k + 4), S32, &H4BDECFA9
mdfHH c, d, a, b, x(k + 7), S33, &HF6BB4B60
mdfHH b, c, d, a, x(k + 10), S34, &HBEBFBC70
mdfHH a, b, c, d, x(k + 13), S31, &H289B7EC6
mdfHH d, a, b, c, x(k + 0), S32, &HEAA127FA
mdfHH c, d, a, b, x(k + 3), S33, &HD4EF3085
mdfHH b, c, d, a, x(k + 6), S34, &H4881D05
mdfHH a, b, c, d, x(k + 9), S31, &HD9D4D039
mdfHH d, a, b, c, x(k + 12), S32, &HE6DB99E5
mdfHH c, d, a, b, x(k + 15), S33, &H1FA27CF8
mdfHH b, c, d, a, x(k + 2), S34, &HC4AC5665
mdfII a, b, c, d, x(k + 0), S41, &HF4292244
mdfII d, a, b, c, x(k + 7), S42, &H432AFF97
mdfII c, d, a, b, x(k + 14), S43, &HAB9423A7
mdfII b, c, d, a, x(k + 5), S44, &HFC93A039
mdfII a, b, c, d, x(k + 12), S41, &H655B59C3
mdfII d, a, b, c, x(k + 3), S42, &H8F0CCC92
mdfII c, d, a, b, x(k + 10), S43, &HFFEFF47D
mdfII b, c, d, a, x(k + 1), S44, &H85845DD1
mdfII a, b, c, d, x(k + 8), S41, &H6FA87E4F
mdfII d, a, b, c, x(k + 15), S42, &HFE2CE6E0
mdfII c, d, a, b, x(k + 6), S43, &HA3014314
mdfII b, c, d, a, x(k + 13), S44, &H4E0811A1
mdfII a, b, c, d, x(k + 4), S41, &HF7537E82
mdfII d, a, b, c, x(k + 11), S42, &HBD3AF235
mdfII c, d, a, b, x(k + 2), S43, &H2AD7D2BB
mdfII b, c, d, a, x(k + 9), S44, &HEB86D391
a = mdfAddUnsigned(a, AA)
b = mdfAddUnsigned(b, BB)
c = mdfAddUnsigned(c, CC)
d = mdfAddUnsigned(d, DD)
Next
rString = mdfWordToHex(a) & mdfWordToHex(b) & mdfWordToHex(c) & mdfWordToHex(d)
If (boolCase) Then
rString = UCase(rString)
Else
rString = LCase(rString)
End If
MD5 = rString
End Function
%>