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1007 lines
29 KiB
1007 lines
29 KiB
' VB Script conversion by Richard Briggs : Richard.briggs@LeanSoftware.net
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' All credits to the original authors who originally coded this in VB as denoted within the code
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Option Explicit
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Private Const OFFSET_4 = 4294967296'#
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Private Const MAXINT_4 = 2147483647
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Private State'(4) 'As Long
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Private ByteCounter 'As Long
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Private ByteBuffer()'(63) 'As Byte
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Private Const S11 = 7
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Private Const S12 = 12
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Private Const S13 = 17
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Private Const S14 = 22
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Private Const S21 = 5
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Private Const S22 = 9
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Private Const S23 = 14
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Private Const S24 = 20
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Private Const S31 = 4
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Private Const S32 = 11
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Private Const S33 = 16
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Private Const S34 = 23
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Private Const S41 = 6
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Private Const S42 = 10
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Private Const S43 = 15
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Private Const S44 = 21
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Set args = WScript.Arguments
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' force State variable to datatype double
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State = Array(cdbl(1),cdbl(1),cdbl(1),cdbl(1),cdbl(1))
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' force bytebuffer() to datatype Byte
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for i = 1 to 64
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redim preserve ByteBuffer(i) 'As Byte
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ByteBuffer(i) = cbyte(0)
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next
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' Get command line parameters
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Dim Email, App, args,ans,i
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Email = args.Item(0)
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App = args.Item(1)
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' Generate the key code
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ans = FormatKeyCode(GenKeyString(Email,App, 0),5)
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Wscript.Echo ans
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' *
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' * KeyCodeGen Module
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' * Copyright (C) 2007 John Mazza.
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' *
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' * Written by John Mazza <maz@mgcworks.com>
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' *
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' * This library is free software; you can redistribute it and/or
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' * modify it under the terms of the GNU Lesser General Public
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' * License Version 2.1 as published by the Free Software Foundation.
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' *
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' * This library is distributed in the hope that it will be useful,
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' * but WITHOUT ANY WARRANTY; without even the implied warranty of
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' * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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' * Lesser General Public License for more details.
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' *
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' * You should have received a copy of the GNU Lesser General Public
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' * License along with this library; if not, write to the Free Software
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' * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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' ****************************************************************************
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'
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'
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' PURPOSE
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' Generate a licening key code that encodes product features into the
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' "keycode" string securely.
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'
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' LANGUAGE
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' Visual Basic 6.0 or VBA6
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' Should work in VB.NET as well
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'
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' DEPENDENCIES:
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' Requires 'Visual Basic MD5 Implementation' by
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' Robert Hubley and David Midkiff (mdj2023@hotmail.com) and
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' StrFuncs module by John Mazza
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'
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' GenKeyString() generates the actual keycode string based on
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' modified MD5 hashes of Username, Product, and licensed "features"
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Public Function GenKeyString(ByVal UserName, ProdName , F_Code ) 'As String
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Dim TempStr 'As String
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Dim KeyStr 'As String
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Dim KeyVal 'As String
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Dim CodeVal 'As Long
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Dim CodeLow 'As Byte
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Dim CodeHigh 'As Byte
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Dim KeyLowV1 'As Byte
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Dim KeyLowV2 'As Byte
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Dim KeyLow1
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Dim KeyLow2
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Dim ChrV1
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Dim ChrV2
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' Make sure we're not case-sensitive since that is a pain for end users
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TempStr = LCase(UserName) & LCase(ProdName)
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KeyStr = DigestStrToHexStr(TempStr)
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KeyVal = HexStrToBinStr(KeyStr)
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' Mask off low order 16 bits from F_Code
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CodeVal = F_Code And &HFFFF
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CodeLow = CodeVal And &HFF
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CodeHigh = (((CodeVal And &HFF00) / 256) And &HFF)
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KeyLow1 = Mid(KeyVal, Len(KeyVal), 1)
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KeyLow2 = Mid(KeyVal, Len(KeyVal) - 1, 1)
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KeyLowV1 = Asc(KeyLow1)
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KeyLowV2 = Asc(KeyLow2)
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KeyLowV1 = (KeyLowV1 Xor CodeLow)
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KeyLowV2 = (KeyLowV2 Xor CodeHigh)
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'KeyLowV1 = KeyLowV1 Xor KeyLowV2
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ChrV1 = Chr(KeyLowV1)
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ChrV2 = Chr(KeyLowV2)
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' Cut original first 2 bytes from KeyVal string
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KeyVal = Mid(KeyVal, 1, Len(KeyVal) - 2)
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' Now append modified bytes
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KeyVal = KeyVal & ChrV2 & ChrV1
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'KeyVal = KeyVal & ChrV1
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' Now we get sneaky and modify the KeyVal by replacing the first 2 bytes
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' of KeyVal with the first and last bytes of the MD5 of KeyVal minus first 2 bytes
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KeyVal = Mid(KeyVal, 3, Len(KeyVal) - 2)
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dim RawChk
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RawChk = DigestStrToHexStr(KeyVal)
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dim rc1, rc2
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RC1 = Mid(RawChk, 1, 2)
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RC2 = Mid(RawChk, Len(RawChk) - 1, 2)
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dim StubStr
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StubStr = BinStrToHexStr(KeyVal)
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GenKeyString = RC1 & RC2 & StubStr
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End Function
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' ValidateKeyCode() validates that a keycode is valid.
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' Basically it is the inverse of GenKeyString()
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Public Function ValidateKeyCode(ByVal KeyCode, UserName, ProjName )' As Boolean
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Dim ActiveBytes 'As String
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Dim LUNameHash 'As String
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Dim LUName 'As String
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Dim ValidKey 'As Boolean
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Dim KeyMD5 'As String
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Dim KeySig 'As String
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ValidKey = False
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' Key must be 32 bytes long - otherwise reject immediately
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If Len(KeyCode) = 32 Then
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BinKeyCode = HexStrToBinStr(KeyCode)
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ActiveBytes = Right(BinKeyCode, 14)
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KeyMD5 = DigestStrToHexStr(ActiveBytes)
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ValidSig = Left(KeyMD5, 2) & Right(KeyMD5, 2)
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KeySig = Left(KeyCode, 4)
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If KeySig = ValidSig Then
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ValidKey = True
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Else
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ValidKey = False
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End If
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If ValidKey Then
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LUName = LCase(UserName) & LCase(ProjName)
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LUNameHash = DigestStrToHexStr(LUName)
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ActiveBytes = Mid(KeyCode, 5, 24)
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LUNameHash = Mid(LUNameHash, 5, 24)
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If ActiveBytes = LUNameHash Then
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ValidKey = True
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Else
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ValidKey = False
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End If
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End If
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Else
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ValidKey = False
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End If
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ValidateKeyCode = ValidKey
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End Function
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' ExtractKeyFBits() returns the bitmap originally passed as F_Code
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' when a key is created with GenKeyString()
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' Note: it will return zero (0) if an invalid keycode is passed or if
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' username or projectname are not a match.
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Public Function ExtractKeyFBits(ByVal KeyCode, UserName, ProjName )
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Dim PermVal 'As Long
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Dim RealHash 'As String
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Dim LUser 'As String
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Dim Perms 'As Long
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Dim BinCodePerm 'As String
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Dim BinUHashPerm 'As String
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Dim HiCodePerm 'As Byte
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Dim HIUMask 'As Byte
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Dim LoUMask 'As Byte
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Dim HiPerm 'As Long
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Dim LoPerm 'As Long
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PermVal = 0
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If ValidateKeyCode(KeyCode, UserName, ProjName) Then
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LUser = LCase(UserName) & LCase(ProjName)
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UserHash = DigestStrToHexStr(LUser)
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KCodedPerm = Right(KeyCode, 4)
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UHashPerm = Right(UserHash, 4)
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BinCodePerm = HexStrToBinStr(KCodedPerm)
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BinUHashPerm = HexStrToBinStr(UHashPerm)
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HiCodePerm = Asc(Mid(BinCodePerm, 1, 1))
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LoCodePerm = Asc(Mid(BinCodePerm, 2, 1))
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HIUMask = Asc(Mid(BinUHashPerm, 1, 1))
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LoUMask = Asc(Mid(BinUHashPerm, 2, 1))
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HiPerm = HiCodePerm Xor HIUMask
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LoPerm = LoCodePerm Xor LoUMask
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PermVal = (HiPerm * 256) Or LoPerm
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Else
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PermVal = 0
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End If
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ExtractKeyFBits = PermVal
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End Function
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Public Function FormatKeyCode(ByVal StrIn , ByVal GrpLen )
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Dim StrLen 'As Long
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Dim CurGrp 'As Long
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Dim OutStr 'As String
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Dim GrpStr 'As String
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Dim GrpStart 'As Long
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StrLen = Len(StrIn)
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dim strGroups, StrLeftOver
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strGroups = Int(StrLen / GrpLen)
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StrLeftOver = StrLen Mod GrpLen
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' Run loop to add dashes into StrIn
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For CurGrp = 0 To (strGroups - 1)
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GrpStart = (CurGrp * GrpLen) + 1
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GrpStr = Mid(StrIn, GrpStart, GrpLen)
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If CurGrp > 0 Then
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OutStr = OutStr & "-" & GrpStr
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Else
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OutStr = OutStr & GrpStr
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End If
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Next 'CurGrp
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' Append a final group if any leftover charaters
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' exist in StrIn
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If StrLeftOver > 0 Then
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OutStr = OutStr & "-" & Right(StrIn, StrLeftOver)
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End If
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FormatKeyCode = OutStr
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End Function
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' *
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' * StrFuncs Module
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' * Copyright (C) 2007 John Mazza.
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' *
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' * Written by John Mazza <maz@mgcworks.com>
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' *
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' * This library is free software; you can redistribute it and/or
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' * modify it under the terms of the GNU Lesser General Public
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' * License Version 2.1 as published by the Free Software Foundation.
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' *
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' * This library is distributed in the hope that it will be useful,
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' * but WITHOUT ANY WARRANTY; without even the implied warranty of
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' * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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' * Lesser General Public License for more details.
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' *
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' * You should have received a copy of the GNU Lesser General Public
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' * License along with this library; if not, write to the Free Software
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' * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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' ****************************************************************************
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'
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' PURPOSE
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' String manipulation routines
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'
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' LANGUAGE
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' Visual Basic 6.0 or VBA6
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' Should work in VB.NET as well
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'
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' DEPENDENCIES:
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' None known
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'
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' Helper for Base32 numbers
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Const B32Map = "0123456789ABCDEFGHJKLMNPRSTVWXYZ"
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' General String Functions
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' RemoveDashes() - Trivial function to delete "-" character from a string
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Public Function RemoveDashes(ByVal StrIn ) 'As String
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RemoveDashes = Replace(StrIn, "-", "")
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End Function
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' ShiftStrLeft() - Shift a string left by a number of bits
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Public Function ShiftStrLeft(ByVal StrIn , ByVal Bits )' As String
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Dim CurPos 'As Long
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Dim WorkStr 'As String
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Dim RetStr 'As String
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Dim CurByteVal 'As Byte
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Dim BitMask 'As Byte
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Dim InvMask 'As Byte
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Dim ShiftBits 'As Byte
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Dim WholeBytes 'As Long
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Dim LeftPart 'As Byte
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Dim RightPart 'As Byte
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Dim Carry 'As Byte
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Dim PrevChar 'As Byte
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Dim TrimMask 'As Byte
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' Figure out some metrics on our input string
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WholeBytes = Int(Bits / 8)
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ShiftBits = Bits Mod 8
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BitMask = 255 - (2 ^ (8 - ShiftBits) - 1)
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InvMask = Not (BitMask)
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TrimMask = (2 ^ ShiftBits) - 1
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CurPos = 1
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StrLen = Len(StrIn)
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StrBits = StrLen * 8
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WorkStr = StrIn
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' Check we're not trying to shift more bits than
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' we have in the string.
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If (StrBits > Bits) Then
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' First, shift string by whole bytes
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If (WholeBytes > 0) Then
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WorkStr = Right(WorkStr, StrLen - WholeBytes)
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' Pad zero bytes to end of WorkStr to make length match
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For CurPos = 1 To WholeBytes
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WorkStr = WorkStr & Chr(0)
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Next 'CurPos
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' Ensure RetStr contains shifted string in case no other
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' bitwise shifting is performed later
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RetStr = WorkStr
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End If
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' Now handle the bitwise shift
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If (ShiftBits > 0) Then
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For CurPos = 1 To Len(WorkStr)
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' Read next character of input and mask it appropriately
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CurByteVal = Asc(Mid(WorkStr, CurPos, 1))
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LeftPart = (CurByteVal And BitMask) And &HFF
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RightPart = (CurByteVal And InvMask) And &HFF
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' Shift the masked portions
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LeftPart = Int(LeftPart / (2 ^ (8 - ShiftBits)))
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RightPart = (RightPart * (2 ^ ShiftBits))
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If CurPos = 1 Then
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' Put the non-discarded part into PrevChar for later use
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PrevChar = (RightPart)
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RetStr = ""
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Else
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' Put carryover part into PrevChar and combine
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' the other bits with the carry from previous step
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PrevChar = PrevChar Or LeftPart
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RetStr = RetStr & Chr(PrevChar)
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PrevChar = RightPart
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End If
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Next 'CurPos
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' Combine our final carry with last char of string and mask off
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PrevChar = (PrevChar Or (LeftPart And Not (TrimMask)))
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RetStr = RetStr & Chr(PrevChar)
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End If
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Else
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' If we're trying to shift by more bits than
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' input string, return an equal length string
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' full of zeroes (null characters).
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For CurPos = 1 To StrLen
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RetStr = RetStr & Chr(0)
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Next 'CurPos
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End If
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ShiftStrLeft = RetStr
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End Function
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' ShiftStringRight() - Shift a string right a number of bits
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Public Function ShiftStrRight(ByVal StrIn , ByVal Bits )' As String
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Dim CurPos 'As Long
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Dim WorkStr 'As String
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Dim RetStr 'As String
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Dim CurByteVal 'As Byte
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Dim BitMask 'As Byte
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Dim InvMask 'As Byte
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Dim ShiftBits 'As Byte
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Dim WholeBytes 'As Long
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Dim LeftPart 'As Byte
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Dim RightPart 'As Byte
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Dim Carry 'As Byte
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Dim PrevChar 'As Byte
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Dim TrimMask 'As Byte
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' Calculate metrics on input
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WholeBytes = Int(Bits / 8)
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ShiftBits = Bits Mod 8
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BitMask = 255 - ((2 ^ ShiftBits) - 1)
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InvMask = Not (BitMask)
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TrimMask = (2 ^ ShiftBits) - 1
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CurPos = 1
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StrLen = Len(StrIn)
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StrBits = StrLen * 8
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' Check we're not trying to shift more bits than
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' we have in the string.
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WorkStr = StrIn
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If (StrBits > Bits) Then
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' First, shift string by whole bytes
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If (WholeBytes > 0) Then
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WorkStr = Left(WorkStr, StrLen - WholeBytes)
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' Pad zero bytes to end of WorkStr
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For CurPos = 1 To WholeBytes
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WorkStr = Chr(0) & WorkStr
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Next' CurPos
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' Ensure RetStr contains shifted string in case no other
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' bitwise shifting later
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RetStr = WorkStr
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End If
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' Now handle the bitwise shift
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If (ShiftBits > 0) Then
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RetStr = ""
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For CurPos = Len(WorkStr) To 1 Step -1
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CurByteVal = Asc(Mid(WorkStr, CurPos, 1))
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LeftPart = CurByteVal And BitMask
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LeftPart = LeftPart / (2 ^ ShiftBits)
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RightPart = CurByteVal And InvMask
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RightPart = RightPart * (2 ^ (8 - ShiftBits))
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If CurPos = Len(WorkStr) Then
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Carry = LeftPart
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Else
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CurByteVal = RightPart Or Carry
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Carry = LeftPart
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RetStr = Chr(CurByteVal) & RetStr
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End If
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Next 'CurPos
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RetStr = Chr(Carry) & RetStr
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End If
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Else
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' If we're trying to shift by more bits than
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' input string, return an equal length string
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' full of zeroes.
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For CurPos = 1 To StrLen
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RetStr = RetStr & Chr(0)
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Next 'CurPos
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End If
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ShiftStrRight = RetStr
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End Function
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' Base32Enc() - Takes a "binary" string and represents as a Base32 number
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' Net result is an encoding where each "character" represents 5 bits
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Public Function Base32Enc(ByVal StrIn ) 'As String
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Dim CurBit 'As Long
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Dim Mask32 'As Byte
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Dim CurPos 'As Long
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Dim CurVal 'As Byte
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Dim StrBits 'As Long
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Dim BitsProc 'As Long
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Dim WorkStr 'As String
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Dim RetStr 'As String
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Dim CurConv 'As String
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RetStr = ""
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WorkStr = StrIn
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StrBits = Len(StrIn) * 8
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strGroups = Int(StrBits / 5)
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If (StrBits Mod 5) <> 0 Then strGroups = strGroups + 1
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StrChar = Len(StrIn)
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BitsProc = 0
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Mask32 = &H1F
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' Work from back of string to front.
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' and output the character representing each 5-bit group
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For CurPos = 1 To strGroups
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CurVal = Asc(Mid(WorkStr, Len(WorkStr), 1))
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CurVal = (CurVal And Mask32) + 1
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CurConv = Mid(B32Map, CurVal, 1)
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WorkStr = ShiftStrRight(WorkStr, 5)
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RetStr = CurConv & RetStr
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Next 'CurPos
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Base32Enc = RetStr
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End Function
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' Base32Dec() - Takes a string encoded with Base32Enc() and returns the
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' original "binary" string it represents.
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Public Function Base32Dec(ByVal StrIn ) 'As String
|
|
Dim CurPos 'As Long
|
|
Dim CurVal 'As Byte
|
|
Dim CurChr 'As String
|
|
Dim RetStr 'As String
|
|
Dim WorkStr 'As String
|
|
Dim Carry 'As Byte
|
|
Dim CarryMask 'As Byte
|
|
Dim CurMask 'As Byte
|
|
Dim ThisVal 'As Byte
|
|
Dim ThisChar 'As String
|
|
Dim ShiftBits 'As Long
|
|
Dim OutBytes 'As Long
|
|
Dim InBits 'As Long
|
|
|
|
' Calculate metrics
|
|
|
|
BitsProc = 0
|
|
BaseMask = &H1F
|
|
Carry = 0
|
|
WorkStr = StrIn
|
|
|
|
InBits = Len(StrIn) * 5
|
|
OutBytes = Int(InBits / 8)
|
|
|
|
' Setup a string of zero bytes to push values into later
|
|
|
|
For CurPos = 1 To OutBytes
|
|
RetStr = RetStr & Chr(0)
|
|
Next 'CurPos
|
|
|
|
' Convert input string into binary representation
|
|
|
|
For CurPos = 1 To Len(StrIn)
|
|
|
|
' Derive 5-bit value of current char in StrIn
|
|
CurChr = Mid(WorkStr, CurPos, 1)
|
|
CurVal = InStr(1, B32Map, CurChr)
|
|
CurVal = CurVal - 1
|
|
|
|
' Now, shift RetStr left 5 bits and pop last char off
|
|
RetStr = ShiftStrLeft(RetStr, 5)
|
|
ThisChar = Mid(RetStr, Len(RetStr), 1)
|
|
RetStr = Left(RetStr, Len(RetStr) - 1)
|
|
|
|
' Now, OR our CurChr with the popped value
|
|
' and push result back to end of string
|
|
ThisVal = Asc(ThisChar)
|
|
ThisVal = ThisVal Or CurVal
|
|
ThisChar = Chr(ThisVal)
|
|
RetStr = RetStr & ThisChar
|
|
Next 'CurPos
|
|
|
|
Base32Dec = RetStr
|
|
|
|
End Function
|
|
|
|
' HexStrToBinStr() - Convert a hexadecimal string into a binary representation
|
|
|
|
Public Function HexStrToBinStr(ByVal StrIn )' As String
|
|
Dim StrOut 'As String
|
|
Dim Ch 'As Long
|
|
Dim HexByte 'As String
|
|
Dim ByteVal 'As Long
|
|
Dim ByteCh 'As String
|
|
|
|
StrOut = ""
|
|
|
|
For Ch = 1 To Len(StrIn) Step 2
|
|
HexByte = Mid(StrIn, Ch, 2)
|
|
'ByteVal = val("&H" & HexByte)
|
|
ByteVal = cint("&H" & HexByte)
|
|
ByteCh = Chr(ByteVal)
|
|
StrOut = StrOut & ByteCh
|
|
Next 'Ch
|
|
|
|
HexStrToBinStr = StrOut
|
|
|
|
End Function
|
|
|
|
' BinStrToHexStr() - Convert a binary string to a hexadecimal representation
|
|
|
|
Public Function BinStrToHexStr(ByVal StrIn )' As String
|
|
Dim StrOut 'As String
|
|
Dim Ch 'As Long
|
|
Dim HexByte 'As String
|
|
Dim HexChr 'As String
|
|
|
|
StrOut = ""
|
|
|
|
For Ch = 1 To Len(StrIn)
|
|
HexByte = Mid(StrIn, Ch, 1)
|
|
'HexChr = Hex$(Asc(HexByte))
|
|
HexChr = Hex(Asc(HexByte))
|
|
If Len(HexChr) = 1 Then HexChr = "0" & HexChr
|
|
StrOut = StrOut & HexChr
|
|
Next 'Ch
|
|
|
|
BinStrToHexStr = StrOut
|
|
|
|
End Function
|
|
|
|
|
|
|
|
|
|
|
|
' Visual Basic MD5 Implementation
|
|
' Robert Hubley and David Midkiff (mdj2023@hotmail.com)
|
|
'
|
|
' Standard MD5 implementation optimised for the Visual Basic environment.
|
|
' Conforms to all standards and can be used in digital signature or password
|
|
' protection related schemes.
|
|
'
|
|
' NOTE - JDM 5/23/2007
|
|
' (Research indicates this code is Licensed for free use)
|
|
'
|
|
|
|
|
|
Function RegisterA() 'As String
|
|
RegisterA = State(1)
|
|
End function 'Property
|
|
|
|
Function RegisterB() 'As String
|
|
RegisterB = State(2)
|
|
End function 'Property
|
|
|
|
Function RegisterC() 'As String
|
|
RegisterC = State(3)
|
|
End function 'Property
|
|
|
|
Function RegisterD() 'As String
|
|
RegisterD = State(4)
|
|
End function 'Property
|
|
|
|
Public Function DigestStrToHexStr(SourceString ) 'As String
|
|
MD5Init
|
|
MD5Update Len(SourceString), StringToArray(SourceString)
|
|
MD5Final
|
|
DigestStrToHexStr = GetValues
|
|
End Function
|
|
|
|
'Public Function DigestFileToHexStr(InFile ) 'As String
|
|
'On Error GoTo errorhandler
|
|
'on error resume next
|
|
'GoSub begin
|
|
|
|
'errorhandler:
|
|
' DigestFileToHexStr = ""
|
|
' Exit Function
|
|
|
|
'begin:
|
|
' Dim FileO 'As Integer
|
|
' FileO = FreeFile
|
|
' Call FileLen(InFile)
|
|
' Open InFile For Binary Access Read As #FileO
|
|
' MD5Init
|
|
' Do While Not EOF(FileO)
|
|
' Get #FileO, , ByteBuffer
|
|
' If Loc(FileO) < LOF(FileO) Then
|
|
' ByteCounter = ByteCounter + 64
|
|
' MD5Transform ByteBuffer
|
|
' End If
|
|
' Loop
|
|
' ByteCounter = ByteCounter + (LOF(FileO) Mod 64)
|
|
' Close #FileO
|
|
' MD5Final
|
|
' DigestFileToHexStr = GetValues
|
|
'End Function
|
|
|
|
Private Function StringToArray(InString ) 'As Byte()
|
|
Dim i 'As Integer
|
|
dim bytBuffer() 'As Byte
|
|
ReDim bytBuffer(Len(InString))
|
|
For i = 0 To Len(InString) - 1
|
|
'bytBuffer(i) = Asc(Mid$(InString, i + 1, 1))
|
|
bytBuffer(i) = Asc(Mid(InString, i + 1, 1))
|
|
Next' i
|
|
StringToArray = bytBuffer
|
|
End Function
|
|
|
|
Public Function GetValues() 'As String
|
|
GetValues = LongToString(State(1)) & LongToString(State(2)) & LongToString(State(3)) & LongToString(State(4))
|
|
End Function
|
|
|
|
Private Function LongToString(Num) 'As String
|
|
Dim A 'As Byte
|
|
dim B 'As Byte
|
|
dim C 'As Byte
|
|
dim D 'As Byte
|
|
A = Num And &HFF&
|
|
If A < 16 Then LongToString = "0" & Hex(A) Else LongToString = Hex(A)
|
|
B = (Num And &HFF00&) \ 256
|
|
If B < 16 Then LongToString = LongToString & "0" & Hex(B) Else LongToString = LongToString & Hex(B)
|
|
C = (Num And &HFF0000) \ 65536
|
|
If C < 16 Then LongToString = LongToString & "0" & Hex(C) Else LongToString = LongToString & Hex(C)
|
|
If Num < 0 Then D = ((Num And &H7F000000) \ 16777216) Or &H80& Else D = (Num And &HFF000000) \ 16777216
|
|
If D < 16 Then LongToString = LongToString & "0" & Hex(D) Else LongToString = LongToString & Hex(D)
|
|
End Function
|
|
|
|
Public Sub MD5Init()
|
|
ByteCounter = 0
|
|
'State(1) = UnsignedToLong(1732584193#)
|
|
'State(2) = UnsignedToLong(4023233417#)
|
|
'State(3) = UnsignedToLong(2562383102#)
|
|
'State(4) = UnsignedToLong(271733878#)
|
|
State(1) = UnsignedToLong(cDbl(1732584193))
|
|
State(2) = UnsignedToLong(cDbl(4023233417))
|
|
State(3) = UnsignedToLong(cDbl(2562383102))
|
|
State(4) = UnsignedToLong(cdbl(271733878))
|
|
End Sub
|
|
|
|
Public Sub MD5Final()
|
|
Dim dblBits 'As Double
|
|
dim padding(72) 'As Byte
|
|
dim lngBytesBuffered 'As Long
|
|
padding(0) = &H80
|
|
dblBits = ByteCounter * 8
|
|
lngBytesBuffered = ByteCounter Mod 64
|
|
If lngBytesBuffered <= 56 Then MD5Update 56 - lngBytesBuffered, padding Else MD5Update 120 - ByteCounter, padding
|
|
padding(0) = UnsignedToLong(dblBits) And &HFF&
|
|
padding(1) = UnsignedToLong(dblBits) \ 256 And &HFF&
|
|
padding(2) = UnsignedToLong(dblBits) \ 65536 And &HFF&
|
|
padding(3) = UnsignedToLong(dblBits) \ 16777216 And &HFF&
|
|
padding(4) = 0
|
|
padding(5) = 0
|
|
padding(6) = 0
|
|
padding(7) = 0
|
|
MD5Update 8, padding
|
|
End Sub
|
|
|
|
Public Sub MD5Update(InputLen , InputBuffer() )
|
|
Dim II 'As Integer,
|
|
dim i 'As Integer,
|
|
dim J 'As Integer,
|
|
dim K 'As Integer,
|
|
dim lngBufferedBytes 'As Long,
|
|
dim lngBufferRemaining 'As Long,
|
|
dim lngRem 'As Long
|
|
|
|
lngBufferedBytes = ByteCounter Mod 64
|
|
lngBufferRemaining = 64 - lngBufferedBytes
|
|
ByteCounter = ByteCounter + InputLen
|
|
|
|
If InputLen >= lngBufferRemaining Then
|
|
For II = 0 To lngBufferRemaining - 1
|
|
ByteBuffer(lngBufferedBytes + II) = InputBuffer(II)
|
|
Next 'II
|
|
MD5Transform ByteBuffer
|
|
lngRem = (InputLen) Mod 64
|
|
For i = lngBufferRemaining To InputLen - II - lngRem Step 64
|
|
For J = 0 To 63
|
|
ByteBuffer(J) = InputBuffer(i + J)
|
|
Next 'J
|
|
MD5Transform ByteBuffer
|
|
Next 'i
|
|
lngBufferedBytes = 0
|
|
Else
|
|
i = 0
|
|
End If
|
|
For K = 0 To InputLen - i - 1
|
|
ByteBuffer(lngBufferedBytes + K) = InputBuffer(i + K)
|
|
Next 'K
|
|
End Sub
|
|
|
|
Private Sub MD5Transform(Buffer() )
|
|
Dim X(16) 'As Long
|
|
dim A 'As Long,
|
|
dim B 'As Long,
|
|
dim C 'As Long,
|
|
dim D 'As Long
|
|
|
|
A = State(1)
|
|
B = State(2)
|
|
C = State(3)
|
|
D = State(4)
|
|
Decode 64, X, Buffer
|
|
FF A, B, C, D, X(0), S11, -680876936
|
|
FF D, A, B, C, X(1), S12, -389564586
|
|
FF C, D, A, B, X(2), S13, 606105819
|
|
FF B, C, D, A, X(3), S14, -1044525330
|
|
FF A, B, C, D, X(4), S11, -176418897
|
|
FF D, A, B, C, X(5), S12, 1200080426
|
|
FF C, D, A, B, X(6), S13, -1473231341
|
|
FF B, C, D, A, X(7), S14, -45705983
|
|
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
|
|
|
|
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
|
|
|
|
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
|
|
|
|
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)
|
|
End Sub
|
|
|
|
Private Sub Decode(Length , OutputBuffer() , InputBuffer() )
|
|
Dim intDblIndex 'As Integer,
|
|
dim intByteIndex 'As Integer,
|
|
dim dblSum 'As Double
|
|
For intByteIndex = 0 To Length - 1 Step 4
|
|
'dblSum = InputBuffer(intByteIndex) + InputBuffer(intByteIndex + 1) * 256# + InputBuffer(intByteIndex + 2) * 65536# + InputBuffer(intByteIndex + 3) * 16777216#
|
|
dblSum = InputBuffer(intByteIndex) + InputBuffer(intByteIndex + 1) * 256 + InputBuffer(intByteIndex + 2) * 65536 + InputBuffer(intByteIndex + 3) * 16777216
|
|
OutputBuffer(intDblIndex) = UnsignedToLong(dblSum)
|
|
intDblIndex = intDblIndex + 1
|
|
Next' intByteIndex
|
|
End Sub
|
|
|
|
'Private Function FF(A As Long, B As Long, C As Long, D As Long, X As Long, S As Long, ac As Long) As Long
|
|
Private Function FF(A , B , C , D, X , S , ac ) 'As Long
|
|
A = LongOverflowAdd4(A, (B And C) Or (Not (B) And D), X, ac)
|
|
A = LongLeftRotate(A, S)
|
|
A = LongOverflowAdd(A, B)
|
|
End Function
|
|
|
|
'Private Function GG(A As Long, B As Long, C As Long, D As Long, X As Long, S As Long, ac As Long) As Long
|
|
Private Function GG(A, B, C , D, X , S, ac)' As Long
|
|
A = LongOverflowAdd4(A, (B And D) Or (C And Not (D)), X, ac)
|
|
A = LongLeftRotate(A, S)
|
|
A = LongOverflowAdd(A, B)
|
|
End Function
|
|
|
|
'Private Function HH(A As Long, B As Long, C As Long, D As Long, X As Long, S As Long, ac As Long) As Long
|
|
Private Function HH(A , B , C , D , X , S , ac )' As Long
|
|
A = LongOverflowAdd4(A, B Xor C Xor D, X, ac)
|
|
A = LongLeftRotate(A, S)
|
|
A = LongOverflowAdd(A, B)
|
|
End Function
|
|
|
|
'Private Function II(A As Long, B As Long, C As Long, D As Long, X As Long, S As Long, ac As Long) As Long
|
|
Private Function II(A, B, C, D, X, S, ac)' As Long
|
|
A = LongOverflowAdd4(A, C Xor (B Or Not (D)), X, ac)
|
|
A = LongLeftRotate(A, S)
|
|
A = LongOverflowAdd(A, B)
|
|
End Function
|
|
|
|
'Function LongLeftRotate(value As Long, Bits As Long) As Long
|
|
Function LongLeftRotate(value , Bits )' As Long
|
|
Dim lngSign 'As Long
|
|
dim lngI 'As Long
|
|
Bits = Bits Mod 32
|
|
If Bits = 0 Then LongLeftRotate = value: Exit Function
|
|
For lngI = 1 To Bits
|
|
lngSign = value And &HC0000000
|
|
value = (value And &H3FFFFFFF) * 2
|
|
value = value Or ((lngSign < 0) And 1) Or (CBool(lngSign And &H40000000) And &H80000000)
|
|
Next
|
|
LongLeftRotate = value
|
|
End Function
|
|
|
|
'Private Function LongOverflowAdd(Val1 As Long, Val2 As Long) As Long
|
|
Private Function LongOverflowAdd(Val1 , Val2 ) 'As Long
|
|
Dim lngHighWord 'As Long
|
|
dim lngLowWord 'As Long
|
|
dim lngOverflow 'As Long
|
|
lngLowWord = (Val1 And &HFFFF&) + (Val2 And &HFFFF&)
|
|
lngOverflow = lngLowWord \ 65536
|
|
lngHighWord = (((Val1 And &HFFFF0000) \ 65536) + ((Val2 And &HFFFF0000) \ 65536) + lngOverflow) And &HFFFF&
|
|
'LongOverflowAdd = UnsignedToLong((lngHighWord * 65536#) + (lngLowWord And &HFFFF&))
|
|
LongOverflowAdd = UnsignedToLong((lngHighWord * 65536) + (lngLowWord And &HFFFF&))
|
|
End Function
|
|
|
|
'Private Function LongOverflowAdd4(Val1 As Long, Val2 As Long, val3 As Long, val4 As Long) As Long
|
|
Private Function LongOverflowAdd4(Val1 , Val2 , val3 , val4 )' As Long
|
|
Dim lngHighWord 'As Long,
|
|
dim lngLowWord 'As Long,
|
|
dim lngOverflow 'As Long
|
|
lngLowWord = (Val1 And &HFFFF&) + (Val2 And &HFFFF&) + (val3 And &HFFFF&) + (val4 And &HFFFF&)
|
|
lngOverflow = lngLowWord \ 65536
|
|
lngHighWord = (((Val1 And &HFFFF0000) \ 65536) + ((Val2 And &HFFFF0000) \ 65536) + ((val3 And &HFFFF0000) \ 65536) + ((val4 And &HFFFF0000) \ 65536) + lngOverflow) And &HFFFF&
|
|
'LongOverflowAdd4 = UnsignedToLong((lngHighWord * 65536#) + (lngLowWord And &HFFFF&))
|
|
LongOverflowAdd4 = UnsignedToLong((lngHighWord * 65536) + (lngLowWord And &HFFFF&))
|
|
End Function
|
|
|
|
'Private Function UnsignedToLong(value As Double) As Long
|
|
Private Function UnsignedToLong(value ) 'As Long
|
|
If value < 0 Or value >= OFFSET_4 Then Error 6
|
|
If value <= MAXINT_4 Then UnsignedToLong = value Else UnsignedToLong = value - OFFSET_4
|
|
End Function
|
|
|
|
'Private Function LongToUnsigned(value As Long) As Double
|
|
Private Function LongToUnsigned(value) 'As Double
|
|
If value < 0 Then LongToUnsigned = value + OFFSET_4 Else LongToUnsigned = value
|
|
End Function |