几种数据加密方法

md5的加密

<input id=test value=sina>
<input type=button value=md5 onclick="alert(hex_md5(test.value))">

/*
* These are the functions you'll usually want to call
* They take string arguments and return either hex or base-64 encoded strings
*/
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }

/* Backwards compatibility - same as hex_md5() */
function calcMD5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}

/*
* Perform a simple self-test to see if the VM is working
*/
function md5_vm_test()
{
return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}

/*
* Calculate the MD5 of an array of little-endian words, and a bit length
*/
function core_md5(x, len)
{
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;

var a = ?
var b = -271733879;
var c = -1732584194;
var d = ?

for(var i = 0; i < x.length; i += 16)
{
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17, ?);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12, ?);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 , ?);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 , ?);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22, ?);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14, ?);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 , ?);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 , ?);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20, ?);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14, ?);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16, ?);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11, ?);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 , ?);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23, ?);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16, ?);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10, ?);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 , ?);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 , ?);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21, ?);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15, ?);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
}
return Array(a, b, c, d);

}

/*
* These functions implement the four basic operations the algorithm uses.
*/
function md5_cmn(q, a, b, x, s, t)
{
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
* Calculate the HMAC-MD5, of a key and some data
*/
function core_hmac_md5(key, data)
{
var bkey = str2binl(key);
if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

var ipad = Array(16), opad = Array(16);
for(var i = 0; i < 16; i++)
{
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}

var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
return core_md5(opad.concat(hash), 512 + 128);
}

/*
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
* to work around bugs in some JS interpreters.
*/
function safe_add(x, y)
{
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}

/*
* Bitwise rotate a 32-bit number to the left.
*/
function bit_rol(num, cnt)
{
return (num << cnt) | (num >>> (32 - cnt));
}

/*
* Convert a string to an array of little-endian words
* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
*/
function str2binl(str)
{
var bin = Array();
var mask = (1 << chrsz) - 1;
for(var i = 0; i < str.length * chrsz; i += chrsz)
bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
return bin;
}

/*
* Convert an array of little-endian words to a hex string.
*/
function binl2hex(binarray)
{
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++)
{
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
}
return str;
}

/*
* Convert an array of little-endian words to a base-64 string
*/
function binl2b64(binarray)
{
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var str = "";
for(var i = 0; i < binarray.length * 4; i += 3)
{
    var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)
                | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
                | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
    for(var j = 0; j < 4; j++)
    {
      if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
      else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
    }
}
return str;
}
</script>

Base64编码加密

function base64encode(str) {
var out, i, len;
var c1, c2, c3;

    len = str.length;
    i = 0;
    out = "";
    while(i < len) {
c1 = str.charCodeAt(i++) & 0xff;
if(i == len)
{
     out += base64EncodeChars.charAt(c1 >> 2);
     out += base64EncodeChars.charAt((c1 & 0x3) << 4);
     out += "==";
     break;
}
c2 = str.charCodeAt(i++);
if(i == len)
{
     out += base64EncodeChars.charAt(c1 >> 2);
     out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
     out += base64EncodeChars.charAt((c2 & 0xF) << 2);
     out += "=";
     break;
}
c3 = str.charCodeAt(i++);
out += base64EncodeChars.charAt(c1 >> 2);
out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
out += base64EncodeChars.charAt(c3 & 0x3F);
    }
    return out;
}

function base64decode(str) {
var c1, c2, c3, c4;
var i, len, out;

    len = str.length;
    i = 0;
    out = "";
    while(i < len) {
/* c1 */
do {
     c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
} while(i < len && c1 == -1);
if(c1 == -1)
     break;

/* c2 */
do {
c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
} while(i < len && c2 == -1);
if(c2 == -1)
break;

out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));

/* c3 */
do {
     c3 = str.charCodeAt(i++) & 0xff;
     if(c3 == 61)
  return out;
     c3 = base64DecodeChars[c3];
} while(i < len && c3 == -1);
if(c3 == -1)
     break;

out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));

/* c4 */
do {
     c4 = str.charCodeAt(i++) & 0xff;
     if(c4 == 61)
  return out;
     c4 = base64DecodeChars[c4];
} while(i < len && c4 == -1);
if(c4 == -1)
     break;
out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
    }
    return out;
}

function utf16to8(str) {
var out, i, len, c;

    out = "";
    len = str.length;
    for(i = 0; i < len; i++) {
c = str.charCodeAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) {
     out += str.charAt(i);
} else if (c > 0x07FF) {
     out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
     out += String.fromCharCode(0x80 | ((c >> ņ) & 0x3F));
     out += String.fromCharCode(0x80 | ((c >> ŀ) & 0x3F));
} else {
     out += String.fromCharCode(0xC0 | ((c >> ņ) & 0x1F));
     out += String.fromCharCode(0x80 | ((c >> ŀ) & 0x3F));
}
    }
    return out;
}

function utf8to16(str) {
var out, i, len, c;
var char2, char3;

    out = "";
    len = str.length;
    i = 0;
    while(i < len) {
c = str.charCodeAt(i++);
switch(c >> 4)
{
   case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
     // 0xxxxxxx
     out += str.charAt(i-1);
     break;
   case 12: case 13:
     // 110x xxxx ಊxx xxxx
     char2 = str.charCodeAt(i++);
     out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
     break;
   case 14:
     // 1110 xxxx ಊxx xxxx ಊxx xxxx
     char2 = str.charCodeAt(i++);
     char3 = str.charCodeAt(i++);
     out += String.fromCharCode(((c & 0x0F) << 12) |
        ((char2 & 0x3F) << 6) |
        ((char3 & 0x3F) << 0));
     break;
}
    }

return out;
}

function doit() {
    var f = document.f
    f.output.value = base64encode(utf16to8(f.source.value))
    f.decode.value = utf8to16(base64decode(f.output.value))
}
</script>
<H1>Base64</H1>
<FORM NAME="f">
原码<BR>
<TEXTAREA NAME="source" ROWS=4 COLS=60 WRAP="soft"></TEXTAREA><BR><BR>
Base64 encode<BR>
<TEXTAREA NAME="output" ROWS=4 COLS=60 WRAP="soft"></TEXTAREA><BR><BR>
Base64 decode<BR>
<TEXTAREA NAME="decode" ROWS=4 COLS=60 WRAP="soft"></TEXTAREA><BR><BR>
<INPUT TYPE=BUTTON VALUE="转换" ONCLICK="doit()">
</FORM>

字符的加密解密

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin

直观的页面加密

<SCRIPT LANGUAGE="JavaScript">
function pass()
{
var user1="test"//用户名，可以更改掉
var user2="test"//密码，改掉
var pass1=document.myform.password.value
var user10=document.myform.user.value
if (pass1 == user2&&user10==user1)
{alert("成功登录...欢迎你")
document.write("<HTML>")
document.write("<body bgcolor='#fef4d9'>")
document.write("<center><p><font size='6'color='darkblue'>欢迎进入!!</p>")
document.write("<p><a href='http://www.sina.com.cn'>新浪网</a><br>")
document.write("</html>")}
else
{
alert("登录失败")}
}
function change()
{
document.bgColor=('#fef4d9')
}
function pass6()
{
var user11="test"//可以修改用户名
var pass11="test"//可以修改密码
var usern=document.myform2.muser.value
var userp=document.myform2.mpass.value
if(usern==user11&&userp==pass11)
{alert("登录成功...欢迎你")//或改为其他成功登录的语句
document.write("<HTML>")
document.write("<body bgcolor='#fef4d9'>")
document.write("<center><p><font size='6'color='darkblue'>请选择你想要去的地方!!</p>")
document.write("<font size='4'><a href='http://www.sohu.com'>搜狐</a><br>")
document.write("<font size='4'><a href='http://www.sina.com.cn'>新浪</a><br>")
document.write("<font size='4'><a href='http://www.163.com'>网易</a><br>")
document.write("<font size='4'><a href='http://www.cctv.com'>央视国际</a>")
document.write("<p><font color='darkblue'>请选择进入</p>")
document.write("</html>")}
else
{alert("登录失败")}
}
</SCRIPT>
<font color="red">
<center>
<FORM name="myform">
<h3>用户登录</h3>
用户名:
<INPUT TYPE="text"name="user">
<br>
密码:
<input type="password"name="password">
<br>
<input type="button"Value="进入"onClick="pass()">
<input type="button"value="重置">
</form>
<form name="myform2">
<h3>管理登录</h3>
管理员帐号:
<input type="text"name="muser">
<br>
管理员密码:
<input type="password"name="mpass">
<br>
<input type="button"value="进入"onClick="pass6()">
<input type="reset"value="重置">
</form>
说明：所以的用户名和密码均为：test(用户名和密码可以在源代码中改变)

输入密码后才能进入页面

<SCRIPT LANGUAGE="JavaScript">
<!-- Hide
al="`1234567890-=~!@#$%^&*()_+qwer"
+"tyuiop[]QWERTYUIOP{}|asdfghjkl;A"
+"SDFGHJKL:zxcvbnm,./ZXCVBNM<>?";
ab1="";
bctr=0;
function ckPwd(){
tst=document.isn.username.value
+"*"+document.isn.passwrd.value+"*";
ls=document.pd.pe.value;
a=eval(ls.substring(0,2))-91;
ls=ls.substring(2,ls.length);
nls="";
flg=0;
while (ls.length>12){
ab=eval(ls.substring(0,2))-89;
ab1=(ab1==""?""+ab:ab1);
oab1=ab1;
ls=ls.substring(2,ls.length);
for (var i=0;i<ab;i++){
   nr=eval(ls.substring(0,2))-a;
   ls=ls.substring(2,ls.length);
   nls+=al.charAt(nr);
   }
nls+="*";
if (nls.indexOf(tst)>-1){
   ls="";
   flg=1;
   }
}
if (flg==1){
tstOk();
}
else{
bctr++;
if (bctr>3){
   location.href="nopass.htm";
   }
else{
   alert("对不起,用户名/密码错误."
   +" 你已试登录"+bctr+"次.");
   }
}
}

function tstOk(){
ab1=ab1+""+a;
alert("正确，开始登录!");
location.href="pwds.htm?"+ab1;
}

// End Hiding -->
</SCRIPT>
<FORM NAME="pd">


<INPUT TYPE='hidden' NAME='pe' VALUE='9393693658789606190557772053938953313395586858685868976834793758313033975834793758313033 '>
</FORM>

<FORM NAME="isn">
<TABLE BORDER=2 CELLPADDING=5 CELLSPACING=0 BGCOLOR=BLUE>
<TR><TD COLSPAN=2 ALIGN=CENTER><FONT SIZE=4 COLOR=WHITE FACE="楷体_GB2312"><B>请您输入</B></FONT></TD></TR>
<TR><TD><FONT SIZE=3 COLOR=WHITE><B>UserName:</B></FONT></TD>
<TD><INPUT TYPE="text" NAME="username" VALUE="" SIZE=10></TD></TR>
<TR><TD><FONT SIZE=3 COLOR=WHITE><B>Password:</B></FONT></TD>
<TD><INPUT TYPE="password" NAME="passwrd" VALUE="" SIZE=10></TD></TR>
<TR><TD COLSPAN=2 ALIGN=CENTER><INPUT TYPE="button" NAME="btn" VALUE=" 登录 " onClick="ckPwd();return false;"></TD></TR>
</TABLE></FORM>
<TABLE BORDER=0 WIDTH=400>
<TR><TD COLSPAN=3 ALIGN=CENTER><FONT FACE="楷体_GB2312"><B>你可以使用如下号码:</B></FONT></TD</TR>

<TR><TD><FONT FACE="helvetica,arial,geneva">登录名:John<BR>密码:4$3gb%a</TD>
<TD><FONT FACE="helvetica,arial,geneva">登录名:Mary<BR>密码:hHhHhH</TD>
<TD><FONT FACE="helvetica,arial,geneva">登录名:Humphrey<BR>密码:humphrey</TD></TR>
</TABLE>

escape()函数加密文本解密
有一种加密的办法是采用javascript的escape()函数，把某些符号、汉字等变成乱码，以达到迷惑人的目的。解密这种代码的办法是采用其反函数加以还原。下面是一个经过加密的例子：<BR>
<font color=red>
%3Chtml%3E%3Cbody%20bgcolor%3D%22white%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E</font><BR>

　　这种文件最好解密，一看就明白，关键是unescape()函数起了还原源代码的作用。要想看到加密前的代码是什么样子，可以用下面的办法(把红的字符复制到文本框中，然后解密就可以看到真相了)：
<SCRIPT LANGUAGE="Javascript">
var Words ="%3Chtml%3E%3Cbody%20bgcolor%3D%22white%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E"
var NewWords;
NewWords = unescape(Words);
NewWords=NewWords.toString();
function password(){
document.pw.txtpw.value=NewWords;
}
</SCRIPT>

秒客网

几种数据加密方法

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