d:\wwwroot\wuchunhua\zhuce\inc\MD5.ASP
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<%
002:
Private Const BITS_TO_A_BYTE = 8
003:
Private Const BYTES_TO_A_WORD = 4
004:
Private Const BITS_TO_A_WORD = 32
005:
006:
Private m_lOnBits(30)
007:
Private m_l2Power(30)
008:
009:
Private Function LShIft(lValue, iShIftBits)
010:
If iShIftBits = 0 Then
011:
LShIft = lValue
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Exit Function
013:
ElseIf iShIftBits = 31 Then
014:
If lValue And 1 Then
015:
LShIft = &H80000000
016:
Else
017:
LShIft = 0
018:
End If
019:
Exit Function
020:
ElseIf iShIftBits < 0 Or iShIftBits > 31 Then
021:
Err.Raise 6
022:
End If
023:
024:
If (lValue And m_l2Power(31 - iShIftBits)) Then
025:
LShIft = ((lValue And m_lOnBits(31 - (iShIftBits + 1))) * m_l2Power(iShIftBits)) Or &H80000000
026:
Else
027:
LShIft = ((lValue And m_lOnBits(31 - iShIftBits)) * m_l2Power(iShIftBits))
028:
End If
029:
End Function
030:
031:
Private Function RShIft(lValue, iShIftBits)
032:
If iShIftBits = 0 Then
033:
RShIft = lValue
034:
Exit Function
035:
ElseIf iShIftBits = 31 Then
036:
If lValue And &H80000000 Then
037:
RShIft = 1
038:
Else
039:
RShIft = 0
040:
End If
041:
Exit Function
042:
ElseIf iShIftBits < 0 Or iShIftBits > 31 Then
043:
Err.Raise 6
044:
End If
045:
046:
RShIft = (lValue And &H7FFFFFFE) \ m_l2Power(iShIftBits)
047:
048:
If (lValue And &H80000000) Then
049:
RShIft = (RShIft Or (&H40000000 \ m_l2Power(iShIftBits - 1)))
050:
End If
051:
End Function
052:
053:
Private Function RotateLeft(lValue, iShIftBits)
054:
RotateLeft = LShIft(lValue, iShIftBits) Or RShIft(lValue, (32 - iShIftBits))
055:
End Function
056:
057:
Private Function AddUnsigned(lX, lY)
058:
Dim lX4
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Dim lY4
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Dim lX8
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Dim lY8
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Dim lResult
063:
064:
lX8 = lX And &H80000000
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lY8 = lY And &H80000000
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lX4 = lX And &H40000000
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lY4 = lY And &H40000000
068:
069:
lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)
070:
071:
If lX4 And lY4 Then
072:
lResult = lResult Xor &H80000000 Xor lX8 Xor lY8
073:
ElseIf lX4 Or lY4 Then
074:
If lResult And &H40000000 Then
075:
lResult = lResult Xor &HC0000000 Xor lX8 Xor lY8
076:
Else
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lResult = lResult Xor &H40000000 Xor lX8 Xor lY8
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End If
079:
Else
080:
lResult = lResult Xor lX8 Xor lY8
081:
End If
082:
083:
AddUnsigned = lResult
084:
End Function
085:
086:
Private Function md5_F(x, y, z)
087:
md5_F = (x And y) Or ((Not x) And z)
088:
End Function
089:
090:
Private Function md5_G(x, y, z)
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md5_G = (x And z) Or (y And (Not z))
092:
End Function
093:
094:
Private Function md5_H(x, y, z)
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md5_H = (x Xor y Xor z)
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End Function
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098:
Private Function md5_I(x, y, z)
099:
md5_I = (y Xor (x Or (Not z)))
100:
End Function
101:
102:
Private Sub md5_FF(a, b, c, d, x, s, ac)
103:
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac))
104:
a = RotateLeft(a, s)
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a = AddUnsigned(a, b)
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End Sub
107:
108:
Private Sub md5_GG(a, b, c, d, x, s, ac)
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a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac))
110:
a = RotateLeft(a, s)
111:
a = AddUnsigned(a, b)
112:
End Sub
113:
114:
Private Sub md5_HH(a, b, c, d, x, s, ac)
115:
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac))
116:
a = RotateLeft(a, s)
117:
a = AddUnsigned(a, b)
118:
End Sub
119:
120:
Private Sub md5_II(a, b, c, d, x, s, ac)
121:
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac))
122:
a = RotateLeft(a, s)
123:
a = AddUnsigned(a, b)
124:
End Sub
125:
126:
Private Function ConvertToWordArray(sMessage)
127:
Dim lMessageLength
128:
Dim lNumberOfWords
129:
Dim lWordArray()
130:
Dim lBytePosition
131:
Dim lByteCount
132:
Dim lWordCount
133:
134:
Const MODULUS_BITS = 512
135:
Const CONGRUENT_BITS = 448
136:
137:
lMessageLength = Len(sMessage)
138:
139:
lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) \ BITS_TO_A_BYTE)) \ (MODULUS_BITS \ BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS \ BITS_TO_A_WORD)
140:
ReDim lWordArray(lNumberOfWords - 1)
141:
142:
lBytePosition = 0
143:
lByteCount = 0
144:
Do Until lByteCount >= lMessageLength
145:
lWordCount = lByteCount \ BYTES_TO_A_WORD
146:
lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE
147:
lWordArray(lWordCount) = lWordArray(lWordCount) Or LShIft(Asc(Mid(sMessage, lByteCount + 1, 1)), lBytePosition)
148:
lByteCount = lByteCount + 1
149:
Loop
150:
151:
lWordCount = lByteCount \ BYTES_TO_A_WORD
152:
lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE
153:
154:
lWordArray(lWordCount) = lWordArray(lWordCount) Or LShIft(&H80, lBytePosition)
155:
156:
lWordArray(lNumberOfWords - 2) = LShIft(lMessageLength, 3)
157:
lWordArray(lNumberOfWords - 1) = RShIft(lMessageLength, 29)
158:
159:
ConvertToWordArray = lWordArray
160:
End Function
161:
162:
Private Function WordToHex(lValue)
163:
Dim lByte
164:
Dim lCount
165:
166:
For lCount = 0 To 3
167:
lByte = RShIft(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
168:
WordToHex = WordToHex & Right("0" & Hex(lByte), 2)
169:
Next
170:
End Function
171:
172:
Public Function MD5(sMessage)
173:
m_lOnBits(0) = CLng(1)
174:
m_lOnBits(1) = CLng(3)
175:
m_lOnBits(2) = CLng(7)
176:
m_lOnBits(3) = CLng(15)
177:
m_lOnBits(4) = CLng(31)
178:
m_lOnBits(5) = CLng(63)
179:
m_lOnBits(6) = CLng(127)
180:
m_lOnBits(7) = CLng(255)
181:
m_lOnBits(8) = CLng(511)
182:
m_lOnBits(9) = CLng(1023)
183:
m_lOnBits(10) = CLng(2047)
184:
m_lOnBits(11) = CLng(4095)
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m_lOnBits(12) = CLng(8191)
186:
m_lOnBits(13) = CLng(16383)
187:
m_lOnBits(14) = CLng(32767)
188:
m_lOnBits(15) = CLng(65535)
189:
m_lOnBits(16) = CLng(131071)
190:
m_lOnBits(17) = CLng(262143)
191:
m_lOnBits(18) = CLng(524287)
192:
m_lOnBits(19) = CLng(1048575)
193:
m_lOnBits(20) = CLng(2097151)
194:
m_lOnBits(21) = CLng(4194303)
195:
m_lOnBits(22) = CLng(8388607)
196:
m_lOnBits(23) = CLng(16777215)
197:
m_lOnBits(24) = CLng(33554431)
198:
m_lOnBits(25) = CLng(67108863)
199:
m_lOnBits(26) = CLng(134217727)
200:
m_lOnBits(27) = CLng(268435455)
201:
m_lOnBits(28) = CLng(536870911)
202:
m_lOnBits(29) = CLng(1073741823)
203:
m_lOnBits(30) = CLng(2147483647)
204:
205:
m_l2Power(0) = CLng(1)
206:
m_l2Power(1) = CLng(2)
207:
m_l2Power(2) = CLng(4)
208:
m_l2Power(3) = CLng(8)
209:
m_l2Power(4) = CLng(16)
210:
m_l2Power(5) = CLng(32)
211:
m_l2Power(6) = CLng(64)
212:
m_l2Power(7) = CLng(128)
213:
m_l2Power(8) = CLng(256)
214:
m_l2Power(9) = CLng(512)
215:
m_l2Power(10) = CLng(1024)
216:
m_l2Power(11) = CLng(2048)
217:
m_l2Power(12) = CLng(4096)
218:
m_l2Power(13) = CLng(8192)
219:
m_l2Power(14) = CLng(16384)
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m_l2Power(15) = CLng(32768)
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m_l2Power(16) = CLng(65536)
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m_l2Power(17) = CLng(131072)
223:
m_l2Power(18) = CLng(262144)
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m_l2Power(19) = CLng(524288)
225:
m_l2Power(20) = CLng(1048576)
226:
m_l2Power(21) = CLng(2097152)
227:
m_l2Power(22) = CLng(4194304)
228:
m_l2Power(23) = CLng(8388608)
229:
m_l2Power(24) = CLng(16777216)
230:
m_l2Power(25) = CLng(33554432)
231:
m_l2Power(26) = CLng(67108864)
232:
m_l2Power(27) = CLng(134217728)
233:
m_l2Power(28) = CLng(268435456)
234:
m_l2Power(29) = CLng(536870912)
235:
m_l2Power(30) = CLng(1073741824)
236:
237:
238:
Dim x
239:
Dim k
240:
Dim AA
241:
Dim BB
242:
Dim CC
243:
Dim DD
244:
Dim a
245:
Dim b
246:
Dim c
247:
Dim d
248:
249:
Const S11 = 7
250:
Const S12 = 12
251:
Const S13 = 17
252:
Const S14 = 22
253:
Const S21 = 5
254:
Const S22 = 9
255:
Const S23 = 14
256:
Const S24 = 20
257:
Const S31 = 4
258:
Const S32 = 11
259:
Const S33 = 16
260:
Const S34 = 23
261:
Const S41 = 6
262:
Const S42 = 10
263:
Const S43 = 15
264:
Const S44 = 21
265:
266:
x = ConvertToWordArray(sMessage)
267:
268:
a = &H67452301
269:
b = &HEFCDAB89
270:
c = &H98BADCFE
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d = &H10325476
272:
273:
For k = 0 To UBound(x) Step 16
274:
AA = a
275:
BB = b
276:
CC = c
277:
DD = d
278:
279:
md5_FF a, b, c, d, x(k + 0), S11, &HD76AA478
280:
md5_FF d, a, b, c, x(k + 1), S12, &HE8C7B756
281:
md5_FF c, d, a, b, x(k + 2), S13, &H242070DB
282:
md5_FF b, c, d, a, x(k + 3), S14, &HC1BDCEEE
283:
md5_FF a, b, c, d, x(k + 4), S11, &HF57C0FAF
284:
md5_FF d, a, b, c, x(k + 5), S12, &H4787C62A
285:
md5_FF c, d, a, b, x(k + 6), S13, &HA8304613
286:
md5_FF b, c, d, a, x(k + 7), S14, &HFD469501
287:
md5_FF a, b, c, d, x(k + 8), S11, &H698098D8
288:
md5_FF d, a, b, c, x(k + 9), S12, &H8B44F7AF
289:
md5_FF c, d, a, b, x(k + 10), S13, &HFFFF5BB1
290:
md5_FF b, c, d, a, x(k + 11), S14, &H895CD7BE
291:
md5_FF a, b, c, d, x(k + 12), S11, &H6B901122
292:
md5_FF d, a, b, c, x(k + 13), S12, &HFD987193
293:
md5_FF c, d, a, b, x(k + 14), S13, &HA679438E
294:
md5_FF b, c, d, a, x(k + 15), S14, &H49B40821
295:
296:
md5_GG a, b, c, d, x(k + 1), S21, &HF61E2562
297:
md5_GG d, a, b, c, x(k + 6), S22, &HC040B340
298:
md5_GG c, d, a, b, x(k + 11), S23, &H265E5A51
299:
md5_GG b, c, d, a, x(k + 0), S24, &HE9B6C7AA
300:
md5_GG a, b, c, d, x(k + 5), S21, &HD62F105D
301:
md5_GG d, a, b, c, x(k + 10), S22, &H2441453
302:
md5_GG c, d, a, b, x(k + 15), S23, &HD8A1E681
303:
md5_GG b, c, d, a, x(k + 4), S24, &HE7D3FBC8
304:
md5_GG a, b, c, d, x(k + 9), S21, &H21E1CDE6
305:
md5_GG d, a, b, c, x(k + 14), S22, &HC33707D6
306:
md5_GG c, d, a, b, x(k + 3), S23, &HF4D50D87
307:
md5_GG b, c, d, a, x(k + 8), S24, &H455A14ED
308:
md5_GG a, b, c, d, x(k + 13), S21, &HA9E3E905
309:
md5_GG d, a, b, c, x(k + 2), S22, &HFCEFA3F8
310:
md5_GG c, d, a, b, x(k + 7), S23, &H676F02D9
311:
md5_GG b, c, d, a, x(k + 12), S24, &H8D2A4C8A
312:
313:
md5_HH a, b, c, d, x(k + 5), S31, &HFFFA3942
314:
md5_HH d, a, b, c, x(k + 8), S32, &H8771F681
315:
md5_HH c, d, a, b, x(k + 11), S33, &H6D9D6122
316:
md5_HH b, c, d, a, x(k + 14), S34, &HFDE5380C
317:
md5_HH a, b, c, d, x(k + 1), S31, &HA4BEEA44
318:
md5_HH d, a, b, c, x(k + 4), S32, &H4BDECFA9
319:
md5_HH c, d, a, b, x(k + 7), S33, &HF6BB4B60
320:
md5_HH b, c, d, a, x(k + 10), S34, &HBEBFBC70
321:
md5_HH a, b, c, d, x(k + 13), S31, &H289B7EC6
322:
md5_HH d, a, b, c, x(k + 0), S32, &HEAA127FA
323:
md5_HH c, d, a, b, x(k + 3), S33, &HD4EF3085
324:
md5_HH b, c, d, a, x(k + 6), S34, &H4881D05
325:
md5_HH a, b, c, d, x(k + 9), S31, &HD9D4D039
326:
md5_HH d, a, b, c, x(k + 12), S32, &HE6DB99E5
327:
md5_HH c, d, a, b, x(k + 15), S33, &H1FA27CF8
328:
md5_HH b, c, d, a, x(k + 2), S34, &HC4AC5665
329:
330:
md5_II a, b, c, d, x(k + 0), S41, &HF4292244
331:
md5_II d, a, b, c, x(k + 7), S42, &H432AFF97
332:
md5_II c, d, a, b, x(k + 14), S43, &HAB9423A7
333:
md5_II b, c, d, a, x(k + 5), S44, &HFC93A039
334:
md5_II a, b, c, d, x(k + 12), S41, &H655B59C3
335:
md5_II d, a, b, c, x(k + 3), S42, &H8F0CCC92
336:
md5_II c, d, a, b, x(k + 10), S43, &HFFEFF47D
337:
md5_II b, c, d, a, x(k + 1), S44, &H85845DD1
338:
md5_II a, b, c, d, x(k + 8), S41, &H6FA87E4F
339:
md5_II d, a, b, c, x(k + 15), S42, &HFE2CE6E0
340:
md5_II c, d, a, b, x(k + 6), S43, &HA3014314
341:
md5_II b, c, d, a, x(k + 13), S44, &H4E0811A1
342:
md5_II a, b, c, d, x(k + 4), S41, &HF7537E82
343:
md5_II d, a, b, c, x(k + 11), S42, &HBD3AF235
344:
md5_II c, d, a, b, x(k + 2), S43, &H2AD7D2BB
345:
md5_II b, c, d, a, x(k + 9), S44, &HEB86D391
346:
347:
a = AddUnsigned(a, AA)
348:
b = AddUnsigned(b, BB)
349:
c = AddUnsigned(c, CC)
350:
d = AddUnsigned(d, DD)
351:
Next
352:
353:
'MD5 = LCase(WordToHex(a) & WordToHex(b) & WordToHex(c) & WordToHex(d))
354:
MD5=LCase(WordToHex(d) & WordToHex(a))
355:
End Function
356:
%
>
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