用dhtml做了一个密码管理器

　2007-11-27 16:35:08　来源：WEB开发网　　　

核心提示：<!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN><HTML><HEAD><TITLE> EMUS PASSWORD MANAGER </TITLE><META NAME=Genera

<!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN>
<HTML>
<HEAD>
<TITLE> EMUS PASSWORD MANAGER </TITLE>
<META NAME=Generator CONTENT=EditPlus>
<META NAME=Author CONTENT=emu(ston)>
<META NAME=Keywords CONTENT=password>
<META NAME=Description CONTENT=An hyper text application which can help you manage your passwords>
<SCRIPT LANGUAGE=JavaScript>
<!--
/*--------------------------------- md5 function ----------------------------------*/

function array(n) {
for(i=0;i<n;i++) this[i]=0;
this.length=n;
}

function integer(n) { return n%(0xffffffff+1); }

function shr(a,b) {
a=integer(a);
b=integer(b);
if (a-0x80000000>=0) {
　 a=a%0x80000000;
　 a>>=b;
　 a+=0x40000000>>(b-1);
} else
　 a>>=b;
return a;
}

function shl1(a) {
a=a%0x80000000;
if (a&0x40000000==0x40000000)
{
　 a-=0x40000000;
　 a*=2;
　 a+=0x80000000;
} else
　 a*=2;
return a;
}

function shl(a,b) {
a=integer(a);
b=integer(b);
for (var i=0;i<b;i++) a=shl1(a);
return a;
}

function and(a,b) {
a=integer(a);
b=integer(b);
var t1=(a-0x80000000);
var t2=(b-0x80000000);
if (t1>=0)
　 if (t2>=0)
　　 return ((t1&t2)+0x80000000);
　 else
　　 return (t1&b);
else
　 if (t2>=0)
　　 return (a&t2);
　 else
　　 return (a&b);
}

function or(a,b) {
a=integer(a);
b=integer(b);
var t1=(a-0x80000000);
var t2=(b-0x80000000);
if (t1>=0)
　 if (t2>=0)
　　 return ((t1|t2)+0x80000000);
　 else
　　 return ((t1|b)+0x80000000);
else
　 if (t2>=0)
　　 return ((a|t2)+0x80000000);
　 else
　　 return (a|b);
}

function xor(a,b) {
a=integer(a);
b=integer(b);
var t1=(a-0x80000000);
var t2=(b-0x80000000);
if (t1>=0)
　 if (t2>=0)
　　 return (t1^t2);
　 else
　　 return ((t1^b)+0x80000000);
else
　 if (t2>=0)
　　 return ((a^t2)+0x80000000);
　 else
　　 return (a^b);
}

function not(a) {
a=integer(a);
return (0xffffffff-a);
}

　 var state = new array(4);
　 var count = new array(2);
count[0] = 0;
count[1] = 0;　　　　　　　　　　
　 var buffer = new array(64);
　 var transformBuffer = new array(16);
　 var digestBits = new array(16);

　 var S11 = 7;
　 var S12 = 12;
　 var S13 = 17;
　 var S14 = 22;
　 var S21 = 5;
　 var S22 = 9;
　 var S23 = 14;
　 var S24 = 20;
　 var S31 = 4;
　 var S32 = 11;
　 var S33 = 16;
　 var S34 = 23;
　 var S41 = 6;
　 var S42 = 10;
　 var S43 = 15;
　 var S44 = 21;

　 function F(x,y,z) {
return or(and(x,y),and(not(x),z));
　 }

　 function G(x,y,z) {
return or(and(x,z),and(y,not(z)));
　 }

　 function H(x,y,z) {
return xor(xor(x,y),z);
　 }

　 function I(x,y,z) {
return xor(y ,or(x , not(z)));
　 }

　 function rotateLeft(a,n) {
return or(shl(a, n),(shr(a,(32 - n))));
　 }

　 function FF(a,b,c,d,x,s,ac) {
　　　 a = a+F(b, c, d) + x + ac;
a = rotateLeft(a, s);
a = a+b;
return a;
　 }

　 function GG(a,b,c,d,x,s,ac) {
a = a+G(b, c, d) +x + ac;
a = rotateLeft(a, s);
a = a+b;
return a;
　 }

　 function HH(a,b,c,d,x,s,ac) {
a = a+H(b, c, d) + x + ac;
a = rotateLeft(a, s);
a = a+b;
return a;
　 }

　 function II(a,b,c,d,x,s,ac) {
a = a+I(b, c, d) + x + ac;
a = rotateLeft(a, s);
a = a+b;
return a;
　 }

　 function transform(buf,offset) {
var a=0, b=0, c=0, d=0;
var x = transformBuffer;

a = state[0];
b = state[1];
c = state[2];
d = state[3];

for (i = 0; i < 16; i++) {
　　 x[i] = and(buf[i*4+offset],0xff);
　　 for (j = 1; j < 4; j++) {
x[i]+=shl(and(buf[i*4+j+offset] ,0xff), j * 8);
　　 }
}

/* Round 1 */
a = FF ( a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
d = FF ( d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
c = FF ( c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
b = FF ( b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
a = FF ( a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
d = FF ( d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
c = FF ( c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
b = FF ( b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
a = FF ( a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
d = FF ( d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
c = FF ( c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
b = FF ( b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
a = FF ( a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
d = FF ( d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
c = FF ( c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
b = FF ( b, c, d, a, x[15], S14, 0x49b40821); /* 16 */

/* Round 2 */
a = GG ( a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
d = GG ( d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
c = GG ( c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
b = GG ( b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
a = GG ( a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
d = GG ( d, a, b, c, x[10], S22, 0x2441453); /* 22 */
c = GG ( c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
b = GG ( b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
a = GG ( a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
d = GG ( d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
c = GG ( c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
b = GG ( b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
a = GG ( a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
d = GG ( d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
c = GG ( c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
b = GG ( b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */

/* Round 3 */
a = HH ( a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
d = HH ( d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
c = HH ( c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
b = HH ( b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
a = HH ( a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
d = HH ( d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
c = HH ( c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
b = HH ( b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
a = HH ( a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
d = HH ( d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
c = HH ( c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
b = HH ( b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
a = HH ( a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
d = HH ( d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
c = HH ( c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
b = HH ( b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */

/* Round 4 */
a = II ( a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
d = II ( d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
c = II ( c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
b = II ( b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
a = II ( a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
d = II ( d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
c = II ( c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
b = II ( b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
a = II ( a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
d = II ( d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
c = II ( c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
b = II ( b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
a = II ( a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
d = II ( d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
c = II ( c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
b = II ( b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */

state[0] +=a;
state[1] +=b;
state[2] +=c;
state[3] +=d;

　 }

　 function init() {
count[0]=count[1] = 0;
state[0] = 0x67452301;
state[1] = 0xefcdab89;
state[2] = 0x98badcfe;
state[3] = 0x10325476;
for (i = 0; i < digestBits.length; i++)
　　 digestBits[i] = 0;
　 }

　 function finish() {
var bits = new array(8);
var padding;
var i=0, index=0, padLen=0;

for (i = 0; i < 4; i++) {
　　 bits[i] = and(shr(count[0],(i * 8)), 0xff);
}
　　　 for (i = 0; i < 4; i++) {
　　 bits[i+4]=and(shr(count[1],(i * 8)), 0xff);
}
index = and(shr(count[0], 3) ,0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
padding = new array(64);
padding[0] = 0x80;
　　　 for (i=0;i<padLen;i++)
　 update(padding[i]);
　　　 for (i=0;i<8;i++)
　 update(bits[i]);

for (i = 0; i < 4; i++) {
　　 for (j = 0; j < 4; j++) {
digestBits[i*4+j] = and(shr(state[i], (j * 8)) , 0xff);
　　 }
}
　 }

/* End of the MD5 algorithm */

function hexa(n) {
var hexa_h = 0123456789abcdef;
var hexa_c=;
var hexa_m=n;
for (hexa_i=0;hexa_i<8;hexa_i++) {
　 hexa_c=hexa_h.charAt(Math.abs(hexa_m)%16)+hexa_c;
　 hexa_m=Math.floor(hexa_m/16);
}
return hexa_c;
}

var ascii=01234567890123456789012345678901 +
　　　　 !\#$%&()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ+
　　　　 [\\]^_`abcdefghijklmnopqrstuvwxyz{|}~;

function MD5(entree)
{
var l,s,k,ka,kb,kc,kd;

init();
for (k=0;k<entree.length;k++) {
　 l=entree.charAt(k);
　 update(ascii.lastIndexOf(l));
}
finish();
ka=kb=kc=kd=0;
for (i=0;i<4;i++) ka+=shl(digestBits[15-i], (i*8));
for (i=4;i<8;i++) kb+=shl(digestBits[15-i], ((i-4)*8));
for (i=8;i<12;i++) kc+=shl(digestBits[15-i], ((i-8)*8));
for (i=12;i<16;i++) kd+=shl(digestBits[15-i], ((i-12)*8));
s=hexa(kd)+hexa(kc)+hexa(kb)+hexa(ka);
return s;
}

/*--------------------------------- end of md5 function ----------------------------------*/

/*------------------------------- encrypt/decrypt function -------------------------------*/
String.prototype.xor = function (key){
if (key==null) key=window.key;
for (var i=0,result=;i<this.length;i++)
result += String.fromCharCode(this.charCodeAt(i)^key.charCodeAt(i%key.length));
return result;
}
/*--------------------------- end of encrypt/decrypt function ----------------------------*/

var pwd=0,key=0,pwds = new Object(),fso = new ActiveXObject(Scripting.FileSystemObject),data=,data_md5=,question1=,question2=,question3=;
var key_md5 = de1b3bc4b324d43d8f730c7ce5884bf2,answerMD5=ba7cbf39b32eab9f5584e59952e16e3d,reminder = unescape(%u39DF%uA7BF%uF672%u87EE%uBAB4%u7920%uC826%u7432%u86CA%uEC92%u5791%u9637%uAB38%uA295%uFA63%u0593%u8D3A%u33A2%u445D%uB6A8%u101B%u4514%uBF19%u651B%u779C%u66DF%u475B%u1923%u33AC%uF171%uDB1F%u22C5);

window.onload=function(){
pwd = prompt(Please enter your access password,);var i=0;
while (pwd != null && MD5(escape(generateKeyByPwd(pwd)))!=key_md5 && i++<3)
　pwd = prompt(Password uncorrect , please enter your access password again,);

if (pwd == null || MD5(escape(generateKeyByPwd(pwd)))!=key_md5) {
　if (confirm(Do you want to get back your password?)){
　 var a1 = promp