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ASP 改良版MD5、SHA256多重加密类（二次及多次）
目前可实现：MD5算法、SHA256算法、先MD5后SHA256、先SHA256后MD5、两次MD5、两次SHA256、前8位MD5算法后8位SHA256算法、前8位SHA256算法后8位MD5算法、取密码最后一个字符的AscW值与8的余数作为加密方案系数、16位MD5加密、32位MD5加密、8位SHA256加密、16位SHA256加密、24位SHA256加密、32位SHA256加密、40位SHA256加密、48位SHA256加密、56位SHA256加密、64位SHA256加密等算法，看过源码之后，更可以自定义更多加密组合及加密算法，跟暴力破解MD5算法说拜拜吧~~ cls_Encrypt.asp 源码： 复制代码 代码如下: <% Private Const BITS_TO_A_BYTE = 8 Private Const BYTES_TO_A_WORD = 4 Private Const BITS_TO_A_WORD = 32 Class Cls_Encrypt Private MD5_m_lOnBits(30) Private MD5_m_l2Power(30) Private SHA256_m_lOnBits(30) Private SHA256_m_l2Power(30) Private SHA256_K(63) Private Sub Class_Initialize MD5_m_lOnBits(0) = CLng(1) MD5_m_lOnBits(1) = CLng(3) MD5_m_lOnBits(2) = CLng(7) MD5_m_lOnBits(3) = CLng(15) MD5_m_lOnBits(4) = CLng(31) MD5_m_lOnBits(5) = CLng(63) MD5_m_lOnBits(6) = CLng(127) MD5_m_lOnBits(7) = CLng(255) MD5_m_lOnBits(8) = CLng(511) MD5_m_lOnBits(9) = CLng(1023) MD5_m_lOnBits(10) = CLng(2047) MD5_m_lOnBits(11) = CLng(4095) MD5_m_lOnBits(12) = CLng(8191) MD5_m_lOnBits(13) = CLng(16383) MD5_m_lOnBits(14) = CLng(32767) MD5_m_lOnBits(15) = CLng(65535) MD5_m_lOnBits(16) = CLng(131071) MD5_m_lOnBits(17) = CLng(262143) MD5_m_lOnBits(18) = CLng(524287) MD5_m_lOnBits(19) = CLng(1048575) MD5_m_lOnBits(20) = CLng(2097151) MD5_m_lOnBits(21) = CLng(4194303) MD5_m_lOnBits(22) = CLng(8388607) MD5_m_lOnBits(23) = CLng(16777215) MD5_m_lOnBits(24) = CLng(33554431) MD5_m_lOnBits(25) = CLng(67108863) MD5_m_lOnBits(26) = CLng(134217727) MD5_m_lOnBits(27) = CLng(268435455) MD5_m_lOnBits(28) = CLng(536870911) MD5_m_lOnBits(29) = CLng(1073741823) MD5_m_lOnBits(30) = CLng(2147483647) MD5_m_l2Power(0) = CLng(1) MD5_m_l2Power(1) = CLng(2) MD5_m_l2Power(2) = CLng(4) MD5_m_l2Power(3) = CLng(8) MD5_m_l2Power(4) = CLng(16) MD5_m_l2Power(5) = CLng(32) MD5_m_l2Power(6) = CLng(64) MD5_m_l2Power(7) = CLng(128) MD5_m_l2Power(8) = CLng(256) MD5_m_l2Power(9) = CLng(512) MD5_m_l2Power(10) = CLng(1024) MD5_m_l2Power(11) = CLng(2048) MD5_m_l2Power(12) = CLng(4096) MD5_m_l2Power(13) = CLng(8192) MD5_m_l2Power(14) = CLng(16384) MD5_m_l2Power(15) = CLng(32768) MD5_m_l2Power(16) = CLng(65536) MD5_m_l2Power(17) = CLng(131072) MD5_m_l2Power(18) = CLng(262144) MD5_m_l2Power(19) = CLng(524288) MD5_m_l2Power(20) = CLng(1048576) MD5_m_l2Power(21) = CLng(2097152) MD5_m_l2Power(22) = CLng(4194304) MD5_m_l2Power(23) = CLng(8388608) MD5_m_l2Power(24) = CLng(16777216) MD5_m_l2Power(25) = CLng(33554432) MD5_m_l2Power(26) = CLng(67108864) MD5_m_l2Power(27) = CLng(134217728) MD5_m_l2Power(28) = CLng(268435456) MD5_m_l2Power(29) = CLng(536870912) MD5_m_l2Power(30) = CLng(1073741824) SHA256_m_lOnBits(0) = CLng(1) SHA256_m_lOnBits(1) = CLng(3) SHA256_m_lOnBits(2) = CLng(7) SHA256_m_lOnBits(3) = CLng(15) SHA256_m_lOnBits(4) = CLng(31) SHA256_m_lOnBits(5) = CLng(63) SHA256_m_lOnBits(6) = CLng(127) SHA256_m_lOnBits(7) = CLng(255) SHA256_m_lOnBits(8) = CLng(511) SHA256_m_lOnBits(9) = CLng(1023) SHA256_m_lOnBits(10) = CLng(2047) SHA256_m_lOnBits(11) = CLng(4095) SHA256_m_lOnBits(12) = CLng(8191) SHA256_m_lOnBits(13) = CLng(16383) SHA256_m_lOnBits(14) = CLng(32767) SHA256_m_lOnBits(15) = CLng(65535) SHA256_m_lOnBits(16) = CLng(131071) SHA256_m_lOnBits(17) = CLng(262143) SHA256_m_lOnBits(18) = CLng(524287) SHA256_m_lOnBits(19) = CLng(1048575) SHA256_m_lOnBits(20) = CLng(2097151) SHA256_m_lOnBits(21) = CLng(4194303) SHA256_m_lOnBits(22) = CLng(8388607) SHA256_m_lOnBits(23) = CLng(16777215) SHA256_m_lOnBits(24) = CLng(33554431) SHA256_m_lOnBits(25) = CLng(67108863) SHA256_m_lOnBits(26) = CLng(134217727) SHA256_m_lOnBits(27) = CLng(268435455) SHA256_m_lOnBits(28) = CLng(536870911) SHA256_m_lOnBits(29) = CLng(1073741823) SHA256_m_lOnBits(30) = CLng(2147483647) SHA256_m_l2Power(0) = CLng(1) SHA256_m_l2Power(1) = CLng(2) SHA256_m_l2Power(2) = CLng(4) SHA256_m_l2Power(3) = CLng(8) SHA256_m_l2Power(4) = CLng(16) SHA256_m_l2Power(5) = CLng(32) SHA256_m_l2Power(6) = CLng(64) SHA256_m_l2Power(7) = CLng(128) SHA256_m_l2Power(8) = CLng(256) SHA256_m_l2Power(9) = CLng(512) SHA256_m_l2Power(10) = CLng(1024) SHA256_m_l2Power(11) = CLng(2048) SHA256_m_l2Power(12) = CLng(4096) SHA256_m_l2Power(13) = CLng(8192) SHA256_m_l2Power(14) = CLng(16384) SHA256_m_l2Power(15) = CLng(32768) SHA256_m_l2Power(16) = CLng(65536) SHA256_m_l2Power(17) = CLng(131072) SHA256_m_l2Power(18) = CLng(262144) SHA256_m_l2Power(19) = CLng(524288) SHA256_m_l2Power(20) = CLng(1048576) SHA256_m_l2Power(21) = CLng(2097152) SHA256_m_l2Power(22) = CLng(4194304) SHA256_m_l2Power(23) = CLng(8388608) SHA256_m_l2Power(24) = CLng(16777216) SHA256_m_l2Power(25) = CLng(33554432) SHA256_m_l2Power(26) = CLng(67108864) SHA256_m_l2Power(27) = CLng(134217728) SHA256_m_l2Power(28) = CLng(268435456) SHA256_m_l2Power(29) = CLng(536870912) SHA256_m_l2Power(30) = CLng(1073741824) SHA256_K(0) = &H428A2F98 SHA256_K(1) = &H71374491 SHA256_K(2) = &HB5C0FBCF SHA256_K(3) = &HE9B5DBA5 SHA256_K(4) = &H3956C25B SHA256_K(5) = &H59F111F1 SHA256_K(6) = &H923F82A4 SHA256_K(7) = &HAB1C5ED5 SHA256_K(8) = &HD807AA98 SHA256_K(9) = &H12835B01 SHA256_K(10) = &H243185BE SHA256_K(11) = &H550C7DC3 SHA256_K(12) = &H72BE5D74 SHA256_K(13) = &H80DEB1FE SHA256_K(14) = &H9BDC06A7 SHA256_K(15) = &HC19BF174 SHA256_K(16) = &HE49B69C1 SHA256_K(17) = &HEFBE4786 SHA256_K(18) = &HFC19DC6 SHA256_K(19) = &H240CA1CC SHA256_K(20) = &H2DE92C6F SHA256_K(21) = &H4A7484AA SHA256_K(22) = &H5CB0A9DC SHA256_K(23) = &H76F988DA SHA256_K(24) = &H983E5152 SHA256_K(25) = &HA831C66D SHA256_K(26) = &HB00327C8 SHA256_K(27) = &HBF597FC7 SHA256_K(28) = &HC6E00BF3 SHA256_K(29) = &HD5A79147 SHA256_K(30) = &H6CA6351 SHA256_K(31) = &H14292967 SHA256_K(32) = &H27B70A85 SHA256_K(33) = &H2E1B2138 SHA256_K(34) = &H4D2C6DFC SHA256_K(35) = &H53380D13 SHA256_K(36) = &H650A7354 SHA256_K(37) = &H766A0ABB SHA256_K(38) = &H81C2C92E SHA256_K(39) = &H92722C85 SHA256_K(40) = &HA2BFE8A1 SHA256_K(41) = &HA81A664B SHA256_K(42) = &HC24B8B70 SHA256_K(43) = &HC76C51A3 SHA256_K(44) = &HD192E819 SHA256_K(45) = &HD6990624 SHA256_K(46) = &HF40E3585 SHA256_K(47) = &H106AA070 SHA256_K(48) = &H19A4C116 SHA256_K(49) = &H1E376C08 SHA256_K(50) = &H2748774C SHA256_K(51) = &H34B0BCB5 SHA256_K(52) = &H391C0CB3 SHA256_K(53) = &H4ED8AA4A SHA256_K(54) = &H5B9CCA4F SHA256_K(55) = &H682E6FF3 SHA256_K(56) = &H748F82EE SHA256_K(57) = &H78A5636F SHA256_K(58) = &H84C87814 SHA256_K(59) = &H8CC70208 SHA256_K(60) = &H90BEFFFA SHA256_K(61) = &HA4506CEB SHA256_K(62) = &HBEF9A3F7 SHA256_K(63) = &HC67178F2 End Sub Private Sub Class_Terminate End Sub '字符传转换数组函数 Private Function ConvertToWordArray(byVal 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 = lWordArray End Function '字符串左移位主函数 Private Function LShift(byVal lValue, byVal 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 MD5_m_l2Power(31 - iShiftBits)) Then LShift = ((lValue And MD5_m_lOnBits(31 - (iShiftBits + 1))) * MD5_m_l2Power(iShiftBits)) or &H80000000 Else LShift = ((lValue And MD5_m_lOnBits(31 - iShiftBits)) * MD5_m_l2Power(iShiftBits)) End If End Function '字符串右移位主函数 Private Function RShift(byVal lValue, byVal 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) \ MD5_m_l2Power(iShiftBits) If (lValue And &H80000000) Then RShift = (RShift or (&H40000000 \ MD5_m_l2Power(iShiftBits - 1))) End If End Function '字符串偏移转换，通过左右移位函数实现 Private Function RotateLeft(byVal lValue, byVal iShiftBits) RotateLeft = LShift(lValue, iShiftBits) or RShift(lValue, (32 - iShiftBits)) End Function '追加无符号16进制编码 Private Function AddUnsigned(byVal lX, byVal 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 = lResult End Function 'MD5_FF,MD5_GG,MD5_HH,MD5_II MD5主编码函数 Private 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 Sub Private 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 Sub Private 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 Sub Private 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 Sub 'MD5_F,MD5_G,MD5_H,MD5_I MD5辅编码函数 Private Function MD5_F(x, y, z) MD5_F = (x And y) or ((Not x) And z) End Function Private Function MD5_G(x, y, z) MD5_G = (x And z) or (y And (Not z)) End Function Private Function MD5_H(x, y, z) MD5_H = (x Xor y Xor z) End Function Private Function MD5_I(x, y, z) MD5_I = (y Xor (x or (Not z))) End Function '16进制编码转换 Private Function WordToHex(byVal lValue) Dim lByte Dim lCount For lCount = 0 To 3 lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And MD5_m_lOnBits(BITS_TO_A_BYTE - 1) WordToHex = WordToHex & Right("0" & Hex(lByte), 2) Next End Function 'MD5主函数 MD5(字符串,编码位) Public Function MD5(byVal sMessage, byVal sType) 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) '加密步骤1：数组转换 a = &H67452301 b = &HEFCDAB89 c = &H98BADCFE d = &H10325476 For k = 0 To UBound(x) Step 16 AA = a BB = b CC = c DD = d '加密步骤2：编码转换 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 '加密步骤3：追加无符号转换 a = AddUnsigned(a, AA) b = AddUnsigned(b, BB) c = AddUnsigned(c, CC) d = AddUnsigned(d, DD) Next If sType = 32 Then '加密步骤4：分割合并各8位16进制转换 MD5 = LCase(WordToHex(a) & WordToHex(b) & WordToHex(c) & WordToHex(d)) Else MD5 = LCase(WordToHex(b) & WordToHex(c)) End If End Function Private Function SHA256_LShift(byVal lValue, byVal iShiftBits) If iShiftBits = 0 Then SHA256_LShift = lValue Exit Function ElseIf iShiftBits = 31 Then If lValue And 1 Then SHA256_LShift = &H80000000 Else SHA256_LShift = 0 End If Exit Function ElseIf iShiftBits < 0 or iShiftBits > 31 Then Err.Raise 6 End If If (lValue And SHA256_m_l2Power(31 - iShiftBits)) Then SHA256_LShift = ((lValue And SHA256_m_lOnBits(31 - (iShiftBits + 1))) * SHA256_m_l2Power(iShiftBits)) or &H80000000 Else SHA256_LShift = ((lValue And SHA256_m_lOnBits(31 - iShiftBits)) * SHA256_m_l2Power(iShiftBits)) End If End Function Private Function SHA256_RShift(byVal lValue, byVal iShiftBits) If iShiftBits = 0 Then SHA256_RShift = lValue Exit Function ElseIf iShiftBits = 31 Then If lValue And &H80000000 Then SHA256_RShift = 1 Else SHA256_RShift = 0 End If Exit Function ElseIf iShiftBits < 0 or iShiftBits > 31 Then Err.Raise 6 End If SHA256_RShift = (lValue And &H7FFFFFFE) \ SHA256_m_l2Power(iShiftBits) If (lValue And &H80000000) Then SHA256_RShift = (SHA256_RShift or (&H40000000 \ SHA256_m_l2Power(iShiftBits - 1))) End If End Function Private Function SHA256_AddUnsigned(byVal lX, byVal 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 SHA256_AddUnsigned = lResult End Function Private Function SHA256_CH(x, y, z) SHA256_Ch = ((x And y) Xor ((Not x) And z)) End Function Private Function SHA256_Maj(x, y, z) SHA256_Maj = ((x And y) Xor (x And z) Xor (y And z)) End Function Private Function SHA256_S(x, n) SHA256_S = (SHA256_RShift(x, (n And SHA256_m_lOnBits(4))) or SHA256_LShift(x, (32 - (n And SHA256_m_lOnBits(4))))) End Function Private Function SHA256_R(x, n) SHA256_R = SHA256_RShift(x, cLng(n And SHA256_m_lOnBits(4))) End Function Private Function SHA256_Sigma0(x) SHA256_Sigma0 = (SHA256_S(x, 2) Xor SHA256_S(x, 13) Xor SHA256_S(x, 22)) End Function Private Function SHA256_Sigma1(x) SHA256_Sigma1 = (SHA256_S(x, 6) Xor SHA256_S(x, 11) Xor SHA256_S(x, 25)) End Function Private Function SHA256_Gamma0(x) SHA256_Gamma0 = (SHA256_S(x, 7) Xor SHA256_S(x, 18) Xor SHA256_R(x, 3)) End Function Private Function SHA256_Gamma1(x) SHA256_Gamma1 = (SHA256_S(x, 17) Xor SHA256_S(x, 19) Xor SHA256_R(x, 10)) End Function Private Function SHA256_ConvertToWordArray(byVal sMessage) Dim lMessageLength Dim lNumberOfWords Dim lWordArray() Dim lBytePosition Dim lByteCount Dim lWordCount Dim lByte 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 = (3 - (lByteCount Mod BYTES_TO_A_WORD)) * BITS_TO_A_BYTE lByte = AscB(Mid(sMessage, lByteCount + 1, 1)) lWordArray(lWordCount) = lWordArray(lWordCount) or SHA256_LShift(lByte, lBytePosition) lByteCount = lByteCount + 1 Loop lWordCount = lByteCount \ BYTES_TO_A_WORD lBytePosition = (3 - (lByteCount Mod BYTES_TO_A_WORD)) * BITS_TO_A_BYTE lWordArray(lWordCount) = lWordArray(lWordCount) or SHA256_LShift(&H80, lBytePosition) lWordArray(lNumberOfWords - 1) = SHA256_LShift(lMessageLength, 3) lWordArray(lNumberOfWords - 2) = SHA256_RShift(lMessageLength, 29) SHA256_ConvertToWordArray = lWordArray End Function ' ========================================================================================== ' SHA256 加密算法 ' ======================================================================================== ' 调用方法： ' SHA256(sMessage, p_Len) ' p_Len控制生成字符串长度，1为8位，2为16位，最大取值为8，即加密后长度为64位 ' 控制 8 位\16 位\24 位\32 位\40 位\48 位\56 位\64 位加密 Public Function SHA256(byVal sMessage, byVal p_Len) Dim HASH(7) Dim M Dim W(63) Dim a Dim b Dim c Dim d Dim e Dim f Dim g Dim h Dim i Dim j Dim T1 Dim T2 HASH(0) = &H6A09E667 HASH(1) = &HBB67AE85 HASH(2) = &H3C6EF372 HASH(3) = &HA54FF53A HASH(4) = &H510E527F HASH(5) = &H9B05688C HASH(6) = &H1F83D9AB HASH(7) = &H5BE0CD19 M = SHA256_ConvertToWordArray(sMessage) For i = 0 To UBound(M) Step 16 a = HASH(0) b = HASH(1) c = HASH(2) d = HASH(3) e = HASH(4) f = HASH(5) g = HASH(6) h = HASH(7) For j = 0 To 63 If j < 16 Then W(j) = M(j + i) Else W(j) = SHA256_AddUnsigned(SHA256_AddUnsigned(SHA256_AddUnsigned(SHA256_Gamma1(W(j - 2)), W(j - 7)), SHA256_Gamma0(W(j - 15))), W(j - 16)) End If T1 = SHA256_AddUnsigned(SHA256_AddUnsigned(SHA256_AddUnsigned(SHA256_AddUnsigned(h, SHA256_Sigma1(e)), SHA256_CH(e, f, g)), SHA256_K(j)), W(j)) T2 = SHA256_AddUnsigned(SHA256_Sigma0(a), SHA256_Maj(a, b, c)) h = g g = f f = e e = SHA256_AddUnsigned(d, T1) d = c c = b b = a a = SHA256_AddUnsigned(T1, T2) Next HASH(0) = SHA256_AddUnsigned(a, HASH(0)) HASH(1) = SHA256_AddUnsigned(b, HASH(1)) HASH(2) = SHA256_AddUnsigned(c, HASH(2)) HASH(3) = SHA256_AddUnsigned(d, HASH(3)) HASH(4) = SHA256_AddUnsigned(e, HASH(4)) HASH(5) = SHA256_AddUnsigned(f, HASH(5)) HASH(6) = SHA256_AddUnsigned(g, HASH(6)) HASH(7) = SHA256_AddUnsigned(h, HASH(7)) Next SHA256 = "" If p_Len >= 8 Then p_Len = 8 If p_Len <= 0 Then p_Len = 2 For i = 0 To p_Len - 1 SHA256 = SHA256 & Right("00000000" & Hex(HASH(i)), 8) Next SHA256 = LCase(SHA256) End Function Public Function EncryptMode(ByVal p_String, ByVal p_Type) Dim E1s, E2s E1s = 16 ' 第一次或者MD5算法加密的长度 16位MD5 加密长度 E2s = 2 ' 第二次或者SHA256算法加密的长度 2*8=16位SHA256 加密长度，最大加密长度为8*8=64位 If Not IsNumeric(p_Type) Then p_Type = 1 ElseIf p_Type > 7 or p_Type < 0 Then '判断方案数，根据p_Type最大值判断 p_Type = 1 End If If Not IsNumeric(E1s) Then E1s = 16 ElseIf E1s <> 16 And E1s <> 32 Then E1s = 16 End If If Not IsNumeric(E2s) Then E2s = 2 ElseIf E2s > 8 or E2s < 0 Then E2s = 2 End If ' ========================================== ' 初次布置使用的时候最好调整加密方案，现在最多8种方案 ' 加密后字符串长度为16位，使用中可自行调整 ' ========================================== Select Case p_Type Case 0 ' MD5 算法 EncryptMode = MD5(p_String, E1s) Case 1 ' SHA256 算法 EncryptMode = SHA256(p_String, E2s) Case 2 ' 先 MD5 后 SHA256 EncryptMode = SHA256(MD5(p_String, E1s), E2s) Case 3 ' 先 SHA256 后 MD5 EncryptMode = MD5(SHA256(p_String, E2s), E1s) Case 4 ' 两次MD5 EncryptMode = MD5(MD5(p_String, E1s), E2s) Case 5 ' 两次SHA256 EncryptMode = SHA256(SHA256(p_String, E1s), E2s) Case 6 ' 前8位 MD5 算法 后8位 SHA256 算法 EncryptMode = Left(MD5(p_String, E1s), 8) & Right(SHA256(p_String, E2s), 8) Case 7 ' 前8位 SHA256 算法 后8位 MD5 算法 EncryptMode = Left(SHA256(p_String, E2s), 8) & Right(MD5(p_String, E1s), 8) End Select End Function ' ============================================ ' 全站密码类通用加密函数 ' ============================================ Public Function PassWordEnt(ByVal p_String) If p_String = "" or IsNull(p_String) Then p_String = 1 ' 取密码最后一个字符的AscW值与8的余数作为加密方案系数 PassWordEnt = EncryptMode(p_String, AscW(LCase(Right(p_String, 1))) Mod 8) End Function End Class %> 演示： 复制代码 代码如下: <% Dim o Set o = new Cls_Encrypt Response.write "MD5算法：" & o.EncryptMode("admin",0) & "
" Response.write "SHA256算法：" & o.EncryptMode("admin",1) & "
" Response.write "先MD5后SHA256：" & o.EncryptMode("admin",2) & "
" Response.write "先SHA256后MD5：" & o.EncryptMode("admin",3) & "
" Response.write "两次MD5：" & o.EncryptMode("admin",4) & "
" Response.write "两次SHA256：" & o.EncryptMode("admin",5) & "
" Response.write "前8位MD5算法后8位SHA256算法：" & o.EncryptMode("admin",6) & "
" Response.write "前8位SHA256算法后8位MD5算法：" & o.EncryptMode("admin",7) & "
" Response.write "取密码最后一个字符的AscW值与8的余数作为加密方案系数：" & o.PassWordEnt("admin") & "
" Response.write "16位MD5加密：" & o.md5("admin",16) & "
" Response.write "32位MD5加密：" & o.md5("admin",32) & "
" Response.write "8位SHA256加密：" & o.sha256("admin",1) & "
" Response.write "16位SHA256加密：" & o.sha256("admin",2) & "
" Response.write "24位SHA256加密：" & o.sha256("admin",3) & "
" Response.write "32位SHA256加密：" & o.sha256("admin",4) & "
" Response.write "40位SHA256加密：" & o.sha256("admin",5) & "
" Response.write "48位SHA256加密：" & o.sha256("admin",6) & "
" Response.write "56位SHA256加密：" & o.sha256("admin",7) & "
" Response.write "64位SHA256加密：" & o.sha256("admin",8) & "
" Set o = nothing %>
