js的md5类，我封装到string中了

[oceanju]

效果演示：
http://www.oceanstudio.net/oceanstudy/learn/js/md5/example.htm
下载包请到
http://sps.oceanstudio.net

[donghid]

well

[dout]

学习

[ttyp]

我封装的
md5.js

function MD5(str)
{
this.sAscii = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
this.sHex = "0123456789ABCDEF";
this.hex = function (i) {
h = "";
for(j = 0; j <= 3; j++)
h += this.sHex.charAt((i >> (j * 8 + 4)) & 0x0F) + this.sHex.charAt((i >> (j * 8)) & 0x0F);
return h;
}
this.text = str;alert();

/* add, handling overflows correctly */
this.add = function (x, y)
{
return ((x&0x7FFFFFFF) + (y&0x7FFFFFFF)) ^ (x&0x80000000) ^ (y&0x80000000);
}

/* MD5 rounds functions */
this.R1 = function (A, B, C, D, X, S, T) {
q = this.add(this.add(A, (B & C) | (~B & D)), this.add(X, T));
return this.add((q << S) | ((q >> (32 - S)) & (Math.pow(2, S) - 1)), B);
}

this.R2 = function (A, B, C, D, X, S, T) {
q = this.add(this.add(A, (B & D) | (C & ~D)), this.add(X, T));
return this.add((q << S) | ((q >> (32 - S)) & (Math.pow(2, S) - 1)), B);
}

this.R3 = function (A, B, C, D, X, S, T) {
q = this.add(this.add(A, B ^ C ^ D), this.add(X, T));
return this.add((q << S) | ((q >> (32 - S)) & (Math.pow(2, S) - 1)), B);
}

this.R4 = function (A, B, C, D, X, S, T) {
q = this.add(this.add(A, C ^ (B | ~D)), this.add(X, T));
return this.add((q << S) | ((q >> (32 - S)) & (Math.pow(2, S) - 1)), B);
}

/* main entry point */
this.toString = function () {
var sInp = this.text;

/* Calculate length in machine words, including padding */
wLen = (((sInp.length + 8) >> 6) + 1) << 4;
var X = new Array(wLen);

/* Convert string to array of words */
j = 4;
for (i = 0; (i * 4) < sInp.length; i++) {
X[i] = 0;
for (j = 0; (j < 4) && ((j + i * 4) < sInp.length); j++) {
X[i] += (this.sAscii.indexOf(sInp.charAt((i * 4) + j)) + 32) << (j * 8);
}
}

/* Append padding bits and length */
if (j == 4) {
X[i++] = 0x80;
}
else
{
X[i - 1] += 0x80 << (j * 8);
}
for (; i < wLen; i++) { X[i] = 0; }
X[wLen - 2] = sInp.length * 8;

/* hard-coded initial values */
a = 0x67452301;
b = 0xefcdab89;
c = 0x98badcfe;
d = 0x10325476;

/* Process each 16-word block in turn */
for (i = 0; i < wLen; i += 16) {
aO = a;
bO = b;
cO = c;
dO = d;

a = this.R1(a, b, c, d, X[i+ 0], 7 , 0xd76aa478);
d = this.R1(d, a, b, c, X[i+ 1], 12, 0xe8c7b756);
c = this.R1(c, d, a, b, X[i+ 2], 17, 0x242070db);
b = this.R1(b, c, d, a, X[i+ 3], 22, 0xc1bdceee);
a = this.R1(a, b, c, d, X[i+ 4], 7 , 0xf57c0faf);
d = this.R1(d, a, b, c, X[i+ 5], 12, 0x4787c62a);
c = this.R1(c, d, a, b, X[i+ 6], 17, 0xa8304613);
b = this.R1(b, c, d, a, X[i+ 7], 22, 0xfd469501);
a = this.R1(a, b, c, d, X[i+ 8], 7 , 0x698098d8);
d = this.R1(d, a, b, c, X[i+ 9], 12, 0x8b44f7af);
c = this.R1(c, d, a, b, X[i+10], 17, 0xffff5bb1);
b = this.R1(b, c, d, a, X[i+11], 22, 0x895cd7be);
a = this.R1(a, b, c, d, X[i+12], 7 , 0x6b901122);
d = this.R1(d, a, b, c, X[i+13], 12, 0xfd987193);
c = this.R1(c, d, a, b, X[i+14], 17, 0xa679438e);
b = this.R1(b, c, d, a, X[i+15], 22, 0x49b40821);

a = this.R2(a, b, c, d, X[i+ 1], 5 , 0xf61e2562);
d = this.R2(d, a, b, c, X[i+ 6], 9 , 0xc040b340);
c = this.R2(c, d, a, b, X[i+11], 14, 0x265e5a51);
b = this.R2(b, c, d, a, X[i+ 0], 20, 0xe9b6c7aa);
a = this.R2(a, b, c, d, X[i+ 5], 5 , 0xd62f105d);
d = this.R2(d, a, b, c, X[i+10], 9 , 0x2441453);
c = this.R2(c, d, a, b, X[i+15], 14, 0xd8a1e681);
b = this.R2(b, c, d, a, X[i+ 4], 20, 0xe7d3fbc8);
a = this.R2(a, b, c, d, X[i+ 9], 5 , 0x21e1cde6);
d = this.R2(d, a, b, c, X[i+14], 9 , 0xc33707d6);
c = this.R2(c, d, a, b, X[i+ 3], 14, 0xf4d50d87);
b = this.R2(b, c, d, a, X[i+ 8], 20, 0x455a14ed);
a = this.R2(a, b, c, d, X[i+13], 5 , 0xa9e3e905);
d = this.R2(d, a, b, c, X[i+ 2], 9 , 0xfcefa3f8);
c = this.R2(c, d, a, b, X[i+ 7], 14, 0x676f02d9);
b = this.R2(b, c, d, a, X[i+12], 20, 0x8d2a4c8a);

a = this.R3(a, b, c, d, X[i+ 5], 4 , 0xfffa3942);
d = this.R3(d, a, b, c, X[i+ 8], 11, 0x8771f681);
c = this.R3(c, d, a, b, X[i+11], 16, 0x6d9d6122);
b = this.R3(b, c, d, a, X[i+14], 23, 0xfde5380c);
a = this.R3(a, b, c, d, X[i+ 1], 4 , 0xa4beea44);
d = this.R3(d, a, b, c, X[i+ 4], 11, 0x4bdecfa9);
c = this.R3(c, d, a, b, X[i+ 7], 16, 0xf6bb4b60);
b = this.R3(b, c, d, a, X[i+10], 23, 0xbebfbc70);
a = this.R3(a, b, c, d, X[i+13], 4 , 0x289b7ec6);
d = this.R3(d, a, b, c, X[i+ 0], 11, 0xeaa127fa);
c = this.R3(c, d, a, b, X[i+ 3], 16, 0xd4ef3085);
b = this.R3(b, c, d, a, X[i+ 6], 23, 0x4881d05);
a = this.R3(a, b, c, d, X[i+ 9], 4 , 0xd9d4d039);
d = this.R3(d, a, b, c, X[i+12], 11, 0xe6db99e5);
c = this.R3(c, d, a, b, X[i+15], 16, 0x1fa27cf8);
b = this.R3(b, c, d, a, X[i+ 2], 23, 0xc4ac5665);

a = this.R4(a, b, c, d, X[i+ 0], 6 , 0xf4292244);
d = this.R4(d, a, b, c, X[i+ 7], 10, 0x432aff97);
c = this.R4(c, d, a, b, X[i+14], 15, 0xab9423a7);
b = this.R4(b, c, d, a, X[i+ 5], 21, 0xfc93a039);
a = this.R4(a, b, c, d, X[i+12], 6 , 0x655b59c3);
d = this.R4(d, a, b, c, X[i+ 3], 10, 0x8f0ccc92);
c = this.R4(c, d, a, b, X[i+10], 15, 0xffeff47d);
b = this.R4(b, c, d, a, X[i+ 1], 21, 0x85845dd1);
a = this.R4(a, b, c, d, X[i+ 8], 6 , 0x6fa87e4f);
d = this.R4(d, a, b, c, X[i+15], 10, 0xfe2ce6e0);
c = this.R4(c, d, a, b, X[i+ 6], 15, 0xa3014314);
b = this.R4(b, c, d, a, X[i+13], 21, 0x4e0811a1);
a = this.R4(a, b, c, d, X[i+ 4], 6 , 0xf7537e82);
d = this.R4(d, a, b, c, X[i+11], 10, 0xbd3af235);
c = this.R4(c, d, a, b, X[i+ 2], 15, 0x2ad7d2bb);
b = this.R4(b, c, d, a, X[i+ 9], 21, 0xeb86d391);

a = this.add(a, aO);
b = this.add(b, bO);
c = this.add(c, cO);
d = this.add(d, dO);
}
return this.hex(a) + this.hex(b) + this.hex(c) + this.hex(d);
}
}


//调用
<SCRIPT LANGUAGE="JavaScript" src="md5.js"></SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
<!--
var a = new MD5("");
alert(a.toString());
//-->
</SCRIPT>

[lawyu]

收藏

[awaysrain]

辛苦了

[rootcn]

收藏

[seeu1688]

great

[hubinasm]

http://blog.csdn.net/emu/archive/2004/10/21/145754.aspx
这里也有一个 呵呵

[nik_Amis]

up

[litestar]

very good