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最初由 ww990 发布 修正 1、密文＝MD5加密（注册名+固定字符“FlashScreenSaverMaker”） 修正 2、注册码的第2位应等于密文的第15位 
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最初由 KuNgBiM 发布 复核了一下 注册码的第2位应该是等于密文的第16位 固定字符有空格的，不要误导。 |
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最初由 ww990 发布 那就更不对了 以你提供的用户名：ww9900 转换后的为：0cde346fa916dc58fec9667643fbce72 除非是ww990才正确！文章有误！ 但。。。。。 ww990对应的是： 38a52438b990f04998ea013cb2706de9 |
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WW9900Flash ScreenSaver Maker转换后是9817c30edd06f75bea902cc508ece106
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最初由 ww990 发布 晕，不早说，你计算用的是“WW9900”而不是“ww9900”！ 大写与小写转换的MD5密文是不同的！！请注意文章！ 
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输入用户名，软件自动转换为大写。
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最初由 ww990 发布 OK！错误解决！ 
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感谢 KuNgBiM 指正。
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源码清单打包！
'窗体部分： Private Sub Command1_Click() Dim s1, s2, s3, s4, s5 Dim xmd5 Dim S, char '用户名与固定字符串加密变形 Set c1 = New clsMD5 xmd5 = c1.Md5_String_Calc(UCase(Text1.Text) + "Flash ScreenSaver Maker") '计算注册码的第2位、第3位、第6位、第7位、第9位 s1 = Mid(xmd5, 16, 1) '第2位 s2 = Mid(xmd5, 1, 1) '第3位 s3 = Mid(xmd5, 22, 1) '第6位 s4 = Mid(xmd5, 9, 1) '第7位 s5 = Mid(xmd5, 29, 1) '第9位 '注册码的第1位、第4位、第5位、第8位、第10位可为任意 S = "8" '连接符号“-” char = "-" '注册码类型：XXX-XXXX-XXX Text2.Text = LCase(S & s1 & s2 & char & S & S & s3 & s4 & char & S & s5 & S) End Sub '类模块部分：[名称:clsMD5] Option Explicit ' Visual Basic MD5 Implementation ' Robert Hubley and David Midkiff ' modify by simonyan, Support chinese ' 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. Private Const OFFSET_4 = 4294967296# Private Const MAXINT_4 = 2147483647 Private State(4) As Long Private ByteCounter As Long Private ByteBuffer(63) As Byte Private Const S11 = 7 Private Const S12 = 12 Private Const S13 = 17 Private Const S14 = 22 Private Const S21 = 5 Private Const S22 = 9 Private Const S23 = 14 Private Const S24 = 20 Private Const S31 = 4 Private Const S32 = 11 Private Const S33 = 16 Private Const S34 = 23 Private Const S41 = 6 Private Const S42 = 10 Private Const S43 = 15 Private Const S44 = 21 Property Get RegisterA() As String RegisterA = State(1) End Property Property Get RegisterB() As String RegisterB = State(2) End Property Property Get RegisterC() As String RegisterC = State(3) End Property Property Get RegisterD() As String RegisterD = State(4) End Property Public Function Md5_String_Calc(SourceString As String) As String MD5Init MD5Update LenB(StrConv(SourceString, vbFromUnicode)), StringToArray(SourceString) MD5Final Md5_String_Calc = GetValues End Function Public Function Md5_File_Calc(InFile As String) As String GoSub begin 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 Md5_File_Calc = GetValues End Function Private Function StringToArray(InString As String) As Byte() Dim I As Integer, bytBuffer() As Byte ReDim bytBuffer(LenB(StrConv(InString, vbFromUnicode))) bytBuffer = StrConv(InString, vbFromUnicode) 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 Long) As String Dim A As Byte, B As Byte, C As Byte, 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#) End Sub Public Sub MD5Final() Dim dblBits As Double, padding(72) As Byte, 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 As Long, InputBuffer() As Byte) Dim II As Integer, I As Integer, J As Integer, K As Integer, lngBufferedBytes As Long, lngBufferRemaining As Long, 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() As Byte) Dim x(16) As Long, A As Long, B As Long, C As Long, 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 As Integer, OutputBuffer() As Long, InputBuffer() As Byte) Dim intDblIndex As Integer, intByteIndex As Integer, 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# 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 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 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 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 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 Dim lngSign As Long, 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 Dim lngHighWord As Long, lngLowWord As Long, 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&)) End Function Private Function LongOverflowAdd4(Val1 As Long, Val2 As Long, val3 As Long, val4 As Long) As Long Dim lngHighWord As Long, lngLowWord As Long, 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&)) End Function Private Function UnsignedToLong(value As Double) 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 If value < 0 Then LongToUnsigned = value + OFFSET_4 Else LongToUnsigned = value End Function |
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