md5加密函数（md5加密公式）
md5加密函数（md5加密公式）
这个是没有必要的，因为MD5加密是不可逆的，所以服务器也不知道原来的数据是什么，如果被截获同样是明文，所以最好用SSL
如果要加密可以看下面的代码：
使用下面的函数，例如varpwd=hex_md5("hello world");对"hello world"进行md5加密。
var hexcase = 0;
function hex_md5(a) {
if (a == "") return a;
return rstr2hex(rstr_md5(str2rstr_utf8(a)))
}
function hex_hmac_md5(a, b) {
return rstr2hex(rstr_hmac_md5(str2rstr_utf8(a), str2rstr_utf8(b)))
}
function md5_vm_test() {
return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72"
}
function rstr_md5(a) {
return binl2rstr(binl_md5(rstr2binl(a), a.length * 8))
}
function rstr_hmac_md5(c, f) {
var e = rstr2binl(c);
if (e.length 16) {
e = binl_md5(e, c.length * 8)
}
var a = Array(16),
d = Array(16);
for (var b = 0; b 16; b++) {
a[b] = e[b] ^ 909522486;
d[b] = e[b] ^ 1549556828
}
var g = binl_md5(a.concat(rstr2binl(f)), 512 + f.length * 8);
return binl2rstr(binl_md5(d.concat(g), 512 + 128))
}
function rstr2hex(c) {
try {
hexcase
} catch(g) {
hexcase = 0
}
var f = hexcase ? "0123456789ABCDEF": "0123456789abcdef";
var b = "";
var a;
for (var d = 0; d c.length; d++) {
a = c.charCodeAt(d);
b += f.charAt((a 4) 15) + f.charAt(a 15)
}
return b
}
function str2rstr_utf8(c) {
var b = "";
var d = -1;
var a, e;
while (++d c.length) {
a = c.charCodeAt(d);
e = d + 1 c.length ? c.charCodeAt(d + 1) : 0;
if (55296 = a a = 56319 56320 = e e = 57343) {
a = 65536 + ((a 1023) 10) + (e 1023);
d++
}
if (a = 127) {
b += String.fromCharCode(a)
} else {
if (a = 2047) {
b += String.fromCharCode(192 | ((a 6) 31), 128 | (a 63))
} else {
if (a = 65535) {
b += String.fromCharCode(224 | ((a 12) 15), 128 | ((a 6) 63), 128 | (a 63))
} else {
if (a = 2097151) {
b += String.fromCharCode(240 | ((a 18) 7), 128 | ((a 12) 63), 128 | ((a 6) 63), 128 | (a 63))
}
}
}
}
}
return b
}
function rstr2binl(b) {
var a = Array(b.length 2);
for (var c = 0; c a.length; c++) {
a[c] = 0
}
for (var c = 0; c b.length * 8; c += 8) {
a[c 5] |= (b.charCodeAt(c / 8) 255) (c % 32)
}
return a
}
function binl2rstr(b) {
var a = "";
for (var c = 0; c b.length * 32; c += 8) {
a += String.fromCharCode((b[c 5] (c % 32)) 255)
}
return a
}
function binl_md5(p, k) {
p[k 5] |= 128 ((k) % 32);
p[(((k + 64) 9) 4) + 14] = k;
var o = 1732584193;
var n = -271733879;
var m = -1732584194;
var l = 271733878;
for (var g = 0; g p.length; g += 16) {
var j = o;
var h = n;
var f = m;
var e = l;
o = md5_ff(o, n, m, l, p[g + 0], 7, -680876936);
l = md5_ff(l, o, n, m, p[g + 1], 12, -389564586);
m = md5_ff(m, l, o, n, p[g + 2], 17, 606105819);
n = md5_ff(n, m, l, o, p[g + 3], 22, -1044525330);
o = md5_ff(o, n, m, l, p[g + 4], 7, -176418897);
l = md5_ff(l, o, n, m, p[g + 5], 12, 1200080426);
m = md5_ff(m, l, o, n, p[g + 6], 17, -1473231341);
n = md5_ff(n, m, l, o, p[g + 7], 22, -45705983);
o = md5_ff(o, n, m, l, p[g + 8], 7, 1770035416);
l = md5_ff(l, o, n, m, p[g + 9], 12, -1958414417);
m = md5_ff(m, l, o, n, p[g + 10], 17, -42063);
n = md5_ff(n, m, l, o, p[g + 11], 22, -1990404162);
o = md5_ff(o, n, m, l, p[g + 12], 7, 1804603682);
l = md5_ff(l, o, n, m, p[g + 13], 12, -40341101);
m = md5_ff(m, l, o, n, p[g + 14], 17, -1502002290);
n = md5_ff(n, m, l, o, p[g + 15], 22, 1236535329);
o = md5_gg(o, n, m, l, p[g + 1], 5, -165796510);
l = md5_gg(l, o, n, m, p[g + 6], 9, -1069501632);
m = md5_gg(m, l, o, n, p[g + 11], 14, 643717713);
n = md5_gg(n, m, l, o, p[g + 0], 20, -373897302);
o = md5_gg(o, n, m, l, p[g + 5], 5, -701558691);
l = md5_gg(l, o, n, m, p[g + 10], 9, 38016083);
m = md5_gg(m, l, o, n, p[g + 15], 14, -660478335);
n = md5_gg(n, m, l, o, p[g + 4], 20, -405537848);
o = md5_gg(o, n, m, l, p[g + 9], 5, 568446438);
l = md5_gg(l, o, n, m, p[g + 14], 9, -1019803690);
m = md5_gg(m, l, o, n, p[g + 3], 14, -187363961);
n = md5_gg(n, m, l, o, p[g + 8], 20, 1163531501);
o = md5_gg(o, n, m, l, p[g + 13], 5, -1444681467);
l = md5_gg(l, o, n, m, p[g + 2], 9, -51403784);
m = md5_gg(m, l, o, n, p[g + 7], 14, 1735328473);
n = md5_gg(n, m, l, o, p[g + 12], 20, -1926607734);
o = md5_hh(o, n, m, l, p[g + 5], 4, -378558);
l = md5_hh(l, o, n, m, p[g + 8], 11, -2022574463);
m = md5_hh(m, l, o, n, p[g + 11], 16, 1839030562);
n = md5_hh(n, m, l, o, p[g + 14], 23, -35309556);
o = md5_hh(o, n, m, l, p[g + 1], 4, -1530992060);
l = md5_hh(l, o, n, m, p[g + 4], 11, 1272893353);
m = md5_hh(m, l, o, n, p[g + 7], 16, -155497632);
n = md5_hh(n, m, l, o, p[g + 10], 23, -1094730640);
o = md5_hh(o, n, m, l, p[g + 13], 4, 681279174);
l = md5_hh(l, o, n, m, p[g + 0], 11, -358537222);
m = md5_hh(m, l, o, n, p[g + 3], 16, -722521979);
n = md5_hh(n, m, l, o, p[g + 6], 23, 76029189);
o = md5_hh(o, n, m, l, p[g + 9], 4, -640364487);
l = md5_hh(l, o, n, m, p[g + 12], 11, -421815835);
m = md5_hh(m, l, o, n, p[g + 15], 16, 530742520);
n = md5_hh(n, m, l, o, p[g + 2], 23, -995338651);
o = md5_ii(o, n, m, l, p[g + 0], 6, -198630844);
l = md5_ii(l, o, n, m, p[g + 7], 10, 1126891415);
m = md5_ii(m, l, o, n, p[g + 14], 15, -1416354905);
n = md5_ii(n, m, l, o, p[g + 5], 21, -57434055);
o = md5_ii(o, n, m, l, p[g + 12], 6, 1700485571);
l = md5_ii(l, o, n, m, p[g + 3], 10, -1894986606);
m = md5_ii(m, l, o, n, p[g + 10], 15, -1051523);
n = md5_ii(n, m, l, o, p[g + 1], 21, -2054922799);
o = md5_ii(o, n, m, l, p[g + 8], 6, 1873313359);
l = md5_ii(l, o, n, m, p[g + 15], 10, -30611744);
m = md5_ii(m, l, o, n, p[g + 6], 15, -1560198380);
n = md5_ii(n, m, l, o, p[g + 13], 21, 1309151649);
o = md5_ii(o, n, m, l, p[g + 4], 6, -145523070);
l = md5_ii(l, o, n, m, p[g + 11], 10, -1120210379);
m = md5_ii(m, l, o, n, p[g + 2], 15, 718787259);
n = md5_ii(n, m, l, o, p[g + 9], 21, -343485551);
o = safe_add(o, j);
n = safe_add(n, h);
m = safe_add(m, f);
l = safe_add(l, e)
}
return Array(o, n, m, l)
}
function md5_cmn(h, e, d, c, g, f) {
return safe_add(bit_rol(safe_add(safe_add(e, h), safe_add(c, f)), g), d)
}
function md5_ff(g, f, k, j, e, i, h) {
return md5_cmn((f k) | ((~f) j), g, f, e, i, h)
}
function md5_gg(g, f, k, j, e, i, h) {
return md5_cmn((f j) | (k (~j)), g, f, e, i, h)
}
function md5_hh(g, f, k, j, e, i, h) {
return md5_cmn(f ^ k ^ j, g, f, e, i, h)
}
function md5_ii(g, f, k, j, e, i, h) {
return md5_cmn(k ^ (f | (~j)), g, f, e, i, h)
}
function safe_add(a, d) {
var c = (a 65535) + (d 65535);
var b = (a 16) + (d 16) + (c 16);
return (b 16) | (c 65535)
}
function bit_rol(a, b) {
return (a b) | (a (32 - b))
};
md5加密运算是不可逆的，就是说不能通过那一串古古怪怪的东西算出它原始的样子。
以下提供VB可用的16位和32位MD5加密函数代码：
Private Const BITS_TO_A_BYTE = 8
Private Const BYTES_TO_A_WORD = 4
Private Const BITS_TO_A_WORD = 32
Private m_lOnBits(30)
Private m_l2Power(30)
Private Function LShift(lValue, 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 m_l2Power(31 - iShiftBits)) Then
LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or H80000000
Else
LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))
End If
End Function
Private Function RShift(lValue, 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) \ m_l2Power(iShiftBits)
If (lValue And H80000000) Then
RShift = (RShift Or (H40000000 \ m_l2Power(iShiftBits - 1)))
End If
End Function
Private Function RotateLeft(lValue, iShiftBits)
RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))
End Function
Private Function AddUnsigned(lX, lY)
Dim lX4
Dim lY4
Dim lX8
Dim lY8
Dim lResult
lX8 = lX And H80000000
lY8 = lY And H80000000
lX4 = lX And H40000000
lY4 = lY And H40000000
lResult = (lX And H3FFFFFFF) + (lY And H3FFFFFFF)
If lX4 And lY4 Then
lResult = lResult Xor H80000000 Xor lX8 Xor lY8
ElseIf lX4 Or lY4 Then
If lResult And H40000000 Then
lResult = lResult Xor HC0000000 Xor lX8 Xor lY8
Else
lResult = lResult Xor H40000000 Xor lX8 Xor lY8
End If
Else
lResult = lResult Xor lX8 Xor lY8
End If
AddUnsigned = lResult
End Function
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
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
Private Function ConvertToWordArray(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
Private Function WordToHex(lValue)
Dim lByte
Dim lCount
For lCount = 0 To 3
lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
WordToHex = WordToHex Right("0" Hex(lByte), 2)
Next
End Function
Public Function MD5(sMessage, stype)
m_lOnBits(0) = CLng(1)
m_lOnBits(1) = CLng(3)
m_lOnBits(2) = CLng(7)
m_lOnBits(3) = CLng(15)
m_lOnBits(4) = CLng(31)
m_lOnBits(5) = CLng(63)
m_lOnBits(6) = CLng(127)
m_lOnBits(7) = CLng(255)
m_lOnBits(8) = CLng(511)
m_lOnBits(9) = CLng(1023)
m_lOnBits(10) = CLng(2047)
m_lOnBits(11) = CLng(4095)
m_lOnBits(12) = CLng(8191)
m_lOnBits(13) = CLng(16383)
m_lOnBits(14) = CLng(32767)
m_lOnBits(15) = CLng(65535)
m_lOnBits(16) = CLng(131071)
m_lOnBits(17) = CLng(262143)
m_lOnBits(18) = CLng(524287)
m_lOnBits(19) = CLng(1048575)
m_lOnBits(20) = CLng(2097151)
m_lOnBits(21) = CLng(4194303)
m_lOnBits(22) = CLng(8388607)
m_lOnBits(23) = CLng(16777215)
m_lOnBits(24) = CLng(33554431)
m_lOnBits(25) = CLng(67108863)
m_lOnBits(26) = CLng(134217727)
m_lOnBits(27) = CLng(268435455)
m_lOnBits(28) = CLng(536870911)
m_lOnBits(29) = CLng(1073741823)
m_lOnBits(30) = CLng(2147483647)
m_l2Power(0) = CLng(1)
m_l2Power(1) = CLng(2)
m_l2Power(2) = CLng(4)
m_l2Power(3) = CLng(8)
m_l2Power(4) = CLng(16)
m_l2Power(5) = CLng(32)
m_l2Power(6) = CLng(64)
m_l2Power(7) = CLng(128)
m_l2Power(8) = CLng(256)
m_l2Power(9) = CLng(512)
m_l2Power(10) = CLng(1024)
m_l2Power(11) = CLng(2048)
m_l2Power(12) = CLng(4096)
m_l2Power(13) = CLng(8192)
m_l2Power(14) = CLng(16384)
m_l2Power(15) = CLng(32768)
m_l2Power(16) = CLng(65536)
m_l2Power(17) = CLng(131072)
m_l2Power(18) = CLng(262144)
m_l2Power(19) = CLng(524288)
m_l2Power(20) = CLng(1048576)
m_l2Power(21) = CLng(2097152)
m_l2Power(22) = CLng(4194304)
m_l2Power(23) = CLng(8388608)
m_l2Power(24) = CLng(16777216)
m_l2Power(25) = CLng(33554432)
m_l2Power(26) = CLng(67108864)
m_l2Power(27) = CLng(134217728)
m_l2Power(28) = CLng(268435456)
m_l2Power(29) = CLng(536870912)
m_l2Power(30) = CLng(1073741824)
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)
a = H67452301
b = HEFCDAB89
c = H98BADCFE
d = H10325476
For k = 0 To UBound(x) Step 16
AA = a
BB = b
CC = c
DD = d
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
a = AddUnsigned(a, AA)
b = AddUnsigned(b, BB)
c = AddUnsigned(c, CC)
d = AddUnsigned(d, DD)
Next
If stype = 32 Then
MD5 = LCase(WordToHex(a) WordToHex(b) WordToHex(c) WordToHex(d))
Else
MD5 = LCase(WordToHex(b) WordToHex(c))
End If
End Function
'下面是测试代码
Sub test()
MsgBox MD5("a", 16) '16位加密
MsgBox MD5("a", 32) '32位加密
End Sub
先要安装libssl-dev
#includestdio.h
#includeopenssl/md5.h
#includestring.h
int main( int argc, char **argv )
{
unsigned char *data = "123";
unsigned char md[16];
int i;
char tmp[3]={'\0'},buf[33]={'\0'};
MD5(data,strlen(data),md);
for (i = 0; i 16; i++){
sprintf(tmp,"%2.2x",md[i]);
strcat(buf,tmp);
}
printf("%s\n",buf);
return 0;
}
编译：
# gcc -o 1 1.c -lcrypto
1、要有md5加密函数
2、使用这个函数
比如b/s程序 md5一般都是一个文件
需要用到md5的函数的时候 include这个文件
还是 md5(password,16) 就是调用这个函数 password是 变量名16 加密长度
'电子表格中调用方法1如 =MD5(A1,16)
'电子表格中调用方法2如 =MD5(A1,32)
'打开Excel按Alt+F11，然后点插入菜单中的模块，然后把这上面所有代码粘贴到模块1中，保存关闭即可在单元格中调用
'这些是注释，以把以下代码直接复制到使用即可。
Private Const BITS_TO_A_BYTE = 8
Private Const BYTES_TO_A_WORD = 4
Private Const BITS_TO_A_WORD = 32
Private m_lOnBits(30)
Private m_l2Power(30)
Private Function LShift(lValue, 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 m_l2Power(31 - iShiftBits)) Then
LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or H80000000
Else
LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))
End If
End Function
Private Function RShift(lValue, 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) \ m_l2Power(iShiftBits)
If (lValue And H80000000) Then
RShift = (RShift Or (H40000000 \ m_l2Power(iShiftBits - 1)))
End If
End Function
Private Function RotateLeft(lValue, iShiftBits)
RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))
End Function
Private Function AddUnsigned(lX, lY)
Dim lX4
Dim lY4
Dim lX8
Dim lY8
Dim lResult
lX8 = lX And H80000000
lY8 = lY And H80000000
lX4 = lX And H40000000
lY4 = lY And H40000000
lResult = (lX And H3FFFFFFF) + (lY And H3FFFFFFF)
If lX4 And lY4 Then
lResult = lResult Xor H80000000 Xor lX8 Xor lY8
ElseIf lX4 Or lY4 Then
If lResult And H40000000 Then
lResult = lResult Xor HC0000000 Xor lX8 Xor lY8
Else
lResult = lResult Xor H40000000 Xor lX8 Xor lY8
End If
Else
lResult = lResult Xor lX8 Xor lY8
End If
AddUnsigned = lResult
End Function
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
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
Private Function ConvertToWordArray(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
Private Function WordToHex(lValue)
Dim lByte
Dim lCount
For lCount = 0 To 3
lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
WordToHex = WordToHex Right("0" Hex(lByte), 2)
Next
End Function
Public Function MD5(sMessage, stype)
m_lOnBits(0) = CLng(1)
m_lOnBits(1) = CLng(3)
m_lOnBits(2) = CLng(7)
m_lOnBits(3) = CLng(15)
m_lOnBits(4) = CLng(31)
m_lOnBits(5) = CLng(63)
m_lOnBits(6) = CLng(127)
m_lOnBits(7) = CLng(255)
m_lOnBits(8) = CLng(511)
m_lOnBits(9) = CLng(1023)
m_lOnBits(10) = CLng(2047)
m_lOnBits(11) = CLng(4095)
m_lOnBits(12) = CLng(8191)
m_lOnBits(13) = CLng(16383)
m_lOnBits(14) = CLng(32767)
m_lOnBits(15) = CLng(65535)
m_lOnBits(16) = CLng(131071)
m_lOnBits(17) = CLng(262143)
m_lOnBits(18) = CLng(524287)
m_lOnBits(19) = CLng(1048575)
m_lOnBits(20) = CLng(2097151)
m_lOnBits(21) = CLng(4194303)
m_lOnBits(22) = CLng(8388607)
m_lOnBits(23) = CLng(16777215)
m_lOnBits(24) = CLng(33554431)
m_lOnBits(25) = CLng(67108863)
m_lOnBits(26) = CLng(134217727)
m_lOnBits(27) = CLng(268435455)
m_lOnBits(28) = CLng(536870911)
m_lOnBits(29) = CLng(1073741823)
m_lOnBits(30) = CLng(2147483647)
m_l2Power(0) = CLng(1)
m_l2Power(1) = CLng(2)
m_l2Power(2) = CLng(4)
m_l2Power(3) = CLng(8)
m_l2Power(4) = CLng(16)
m_l2Power(5) = CLng(32)
m_l2Power(6) = CLng(64)
m_l2Power(7) = CLng(128)
m_l2Power(8) = CLng(256)
m_l2Power(9) = CLng(512)
m_l2Power(10) = CLng(1024)
m_l2Power(11) = CLng(2048)
m_l2Power(12) = CLng(4096)
m_l2Power(13) = CLng(8192)
m_l2Power(14) = CLng(16384)
m_l2Power(15) = CLng(32768)
m_l2Power(16) = CLng(65536)
m_l2Power(17) = CLng(131072)
m_l2Power(18) = CLng(262144)
m_l2Power(19) = CLng(524288)
m_l2Power(20) = CLng(1048576)
m_l2Power(21) = CLng(2097152)
m_l2Power(22) = CLng(4194304)
m_l2Power(23) = CLng(8388608)
m_l2Power(24) = CLng(16777216)
m_l2Power(25) = CLng(33554432)
m_l2Power(26) = CLng(67108864)
m_l2Power(27) = CLng(134217728)
m_l2Power(28) = CLng(268435456)
m_l2Power(29) = CLng(536870912)
m_l2Power(30) = CLng(1073741824)
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)
a = H67452301
b = HEFCDAB89
c = H98BADCFE
d = H10325476
For k = 0 To UBound(x) Step 16
AA = a
BB = b
CC = c
DD = d
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
a = AddUnsigned(a, AA)
b = AddUnsigned(b, BB)
c = AddUnsigned(c, CC)
d = AddUnsigned(d, DD)
Next
If stype = 32 Then
MD5 = LCase(WordToHex(a) WordToHex(b) WordToHex(c) WordToHex(d))
Else
MD5 = LCase(WordToHex(b) WordToHex(c))
End If
End Function
'以下为测试用，可以不要
Sub test()
Dim i As String
i = InputBox("Please input a password:")
If MD5(i, 32) = MD5("abc", 32) Or MD5(i, 16) = MD5("abc", 16) Then: MsgBox "Ok": Else: MsgBox "failed": End
'MsgBox MD5("abc", 16) '返回16位小写
'MsgBox MD5("abc", 32) '返回32位小写
End Sub
'电子表格中调用方法1如 =MD5(A1,16)
'电子表格中调用方法2如 =MD5(A1,32)
'打开Excel按Alt+F11，然后点插入菜单中的模块，然后把这上面所有代码粘贴到模块1中，保存关闭即可在单元格中调用
（1）DES加密函数
create
or
replace
function
encrypt_des(p_text
varchar2,
p_key
varchar2)
return
varchar2
is
v_text
varchar2(4000);
v_enc
varchar2(4000);
raw_input
RAW(128)
;
key_input
RAW(128)
;
decrypted_raw
RAW(2048);
begin
v_text
:=
rpad(
p_text,
(trunc(length(p_text)/8)+1)*8,
chr(0));
raw_input
:=
UTL_RAW.CAST_TO_RAW(v_text);
key_input
:=
UTL_RAW.CAST_TO_RAW(p_key);
dbms_obfuscation_toolkit.DESEncrypt(input
=
raw_input,key
=
key_input,encrypted_data
=decrypted_raw);
v_enc
:=
rawtohex(decrypted_raw);
dbms_output.put_line(v_enc);
return
v_enc;
end;
（2）DES解密函数
create
or
replace
function
decrypt_des(p_text
varchar2,p_key
varchar2)
return
varchar2
is
v_text
varchar2(2000);
begin
dbms_obfuscation_toolkit.DESDECRYPT(input_string
=
UTL_RAW.CAST_TO_varchar2(p_text),key_string
=p_key,
decrypted_string=
v_text);
v_text
:=
rtrim(v_text,chr(0));
dbms_output.put_line(v_text);
return
v_text;
end;
（3）MD5加密函数
CREATE
OR
REPLACE
FUNCTION
MD5(passwd
IN
VARCHAR2)
RETURN
VARCHAR2
IS
retval
varchar2(32);
BEGIN
retval
:=
utl_raw.cast_to_raw(DBMS_OBFUSCATION_TOOLKIT.MD5(INPUT_STRING
=
passwd))
;
RETURN
retval;
END;
（4）函数使用示例
DES加密：
update
tb_salarysign_staff
s
set
s.staffpwd
=encrypt_des(s.staffpwd,
'test#5124*!de');
DES解密：select
decrypt_des(s.staffpwd,
'test#5124*!de')
from
tb_salarysign_staff
s
MD5加密：
update
tb_salarysign_staff
s
set
s.staffpwd
=
md5(s.staffpwd);
