1、base64加密
在页面中引入base64.js文件，调用方法为：
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>base64加密</title>
<script type="text/javascript" src="base64.js"></script>
<script type="text/javascript">
var b = new Base64();
var str = b.encode("admin:admin");
alert("base64 encode:" + str);
//解密
str = b.decode(str);
alert("base64 decode:" + str);
</script>
</head>
<body>
</body>
</html>
2、md5加密
在页面中引用md5.js文件，调用方法为
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>md5加密</title>
<script type="text/ecmascript" src="md5.js"></script>
<script type="text/javascript">
var hash = hex_md5("123dafd");
alert(hash)
</script>
</head>
<body>
</body>
</html>
3、sha1加密
据说这是最安全的加密
页面中引入sha1.js，调用方法为
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>sha1加密</title>
<script type="text/ecmascript" src="sha1.js"></script>
<script type="text/javascript">
var sha = hex_sha1('mima123465')
alert(sha)
</script>
</head>
<body>
</body>
</html>
非常流行的javascript的md5加密
在网上看到的javascript的MD5加密，看比较好，就摘录了，供参考
<input id=test value=webasp>
<input type=button value=md onclick="alert(hex_md(test.value))">
<script>
var hexcase = ; /* hex output format. - lowercase; - uppercase */
var bpad = ""; /* base- pad character. "=" for strict RFC compliance */
var chrsz = ; /* bits per input character. - ASCII; - Unicode */
/*
* These are the functions you'll usually want to call
* They take string arguments and return either hex or base- encoded strings
*/
function hex_md(s){ return binlhex(core_md(strbinl(s), s.length * chrsz));}
function b_md(s){ return binlb(core_md(strbinl(s), s.length * chrsz));}
function hex_hmac_md(key, data) { return binlhex(core_hmac_md(key, data)); }
function b_hmac_md(key, data) { return binlb(core_hmac_md(key, data)); }
/* Backwards compatibility - same as hex_md() */
function calcMD(s){ return binlhex(core_md(strbinl(s), s.length * chrsz));}
/*
* Perform a simple self-test to see if the VM is working
*/
function md_vm_test()
{
return hex_md("abc") == "cdfbdfdef";
}
/*
* Calculate the MD of an array of little-endian words, and a bit length
*/
function core_md(x, len)
{
/* append padding */
x[len >> ] |= x << ((len) % );
x[(((len + ) >>> ) << ) + ] = len;
var a = ;
var b = -;
var c = -;
var d = ;
for(var i = ; i < x.length; i += )
{
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md_ff(a, b, c, d, x[i+ ], , -);
d = md_ff(d, a, b, c, x[i+ ], , -);
c = md_ff(c, d, a, b, x[i+ ], , );
b = md_ff(b, c, d, a, x[i+ ], , -);
a = md_ff(a, b, c, d, x[i+ ], , -);
d = md_ff(d, a, b, c, x[i+ ], , );
c = md_ff(c, d, a, b, x[i+ ], , -);
b = md_ff(b, c, d, a, x[i+ ], , -);
a = md_ff(a, b, c, d, x[i+ ], , );
d = md_ff(d, a, b, c, x[i+ ], , -);
c = md_ff(c, d, a, b, x[i+], , -);
b = md_ff(b, c, d, a, x[i+], , -);
a = md_ff(a, b, c, d, x[i+], , );
d = md_ff(d, a, b, c, x[i+], , -);
c = md_ff(c, d, a, b, x[i+], , -);
b = md_ff(b, c, d, a, x[i+], , );
a = md_gg(a, b, c, d, x[i+ ], , -);
d = md_gg(d, a, b, c, x[i+ ], , -);
c = md_gg(c, d, a, b, x[i+], , );
b = md_gg(b, c, d, a, x[i+ ], , -);
a = md_gg(a, b, c, d, x[i+ ], , -);
d = md_gg(d, a, b, c, x[i+], , );
c = md_gg(c, d, a, b, x[i+], , -);
b = md_gg(b, c, d, a, x[i+ ], , -);
a = md_gg(a, b, c, d, x[i+ ], , );
d = md_gg(d, a, b, c, x[i+], , -);
c = md_gg(c, d, a, b, x[i+ ], , -);
b = md_gg(b, c, d, a, x[i+ ], , );
a = md_gg(a, b, c, d, x[i+], , -);
d = md_gg(d, a, b, c, x[i+ ], , -);
c = md_gg(c, d, a, b, x[i+ ], , );
b = md_gg(b, c, d, a, x[i+], , -);
a = md_hh(a, b, c, d, x[i+ ], , -);
d = md_hh(d, a, b, c, x[i+ ], , -);
c = md_hh(c, d, a, b, x[i+], , );
b = md_hh(b, c, d, a, x[i+], , -);
a = md_hh(a, b, c, d, x[i+ ], , -);
d = md_hh(d, a, b, c, x[i+ ], , );
c = md_hh(c, d, a, b, x[i+ ], , -);
b = md_hh(b, c, d, a, x[i+], , -);
a = md_hh(a, b, c, d, x[i+], , );
d = md_hh(d, a, b, c, x[i+ ], , -);
c = md_hh(c, d, a, b, x[i+ ], , -);
b = md_hh(b, c, d, a, x[i+ ], , );
a = md_hh(a, b, c, d, x[i+ ], , -);
d = md_hh(d, a, b, c, x[i+], , -);
c = md_hh(c, d, a, b, x[i+], , );
b = md_hh(b, c, d, a, x[i+ ], , -);
a = md_ii(a, b, c, d, x[i+ ], , -);
d = md_ii(d, a, b, c, x[i+ ], , );
c = md_ii(c, d, a, b, x[i+], , -);
b = md_ii(b, c, d, a, x[i+ ], , -);
a = md_ii(a, b, c, d, x[i+], , );
d = md_ii(d, a, b, c, x[i+ ], , -);
c = md_ii(c, d, a, b, x[i+], , -);
b = md_ii(b, c, d, a, x[i+ ], , -);
a = md_ii(a, b, c, d, x[i+ ], , );
d = md_ii(d, a, b, c, x[i+], , -);
c = md_ii(c, d, a, b, x[i+ ], , -);
b = md_ii(b, c, d, a, x[i+], , );
a = md_ii(a, b, c, d, x[i+ ], , -);
d = md_ii(d, a, b, c, x[i+], , -);
c = md_ii(c, d, a, b, x[i+ ], , );
b = md_ii(b, c, d, a, x[i+ ], , -);
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 md_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 md_ff(a, b, c, d, x, s, t)
{
return md_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md_gg(a, b, c, d, x, s, t)
{
return md_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md_hh(a, b, c, d, x, s, t)
{
return md_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md_ii(a, b, c, d, x, s, t)
{
return md_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
/*
* Calculate the HMAC-MD, of a key and some data
*/
function core_hmac_md(key, data)
{
var bkey = strbinl(key);
if(bkey.length > ) bkey = core_md(bkey, key.length * chrsz);
var ipad = Array(), opad = Array();
for(var i = ; i < ; i++)
{
ipad[i] = bkey[i] ^ x;
opad[i] = bkey[i] ^ xCCCC;
}
var hash = core_md(ipad.concat(strbinl(data)), + data.length * chrsz);
return core_md(opad.concat(hash), + );
}
/*
* Add integers, wrapping at ^. This uses -bit operations internally
* to work around bugs in some JS interpreters.
*/
function safe_add(x, y)
{
var lsw = (x & xFFFF) + (y & xFFFF);
var msw = (x >> ) + (y >> ) + (lsw >> );
return (msw << ) | (lsw & xFFFF);
}
/*
* Bitwise rotate a -bit number to the left.
*/
function bit_rol(num, cnt)
{
return (num << cnt) | (num >>> ( - cnt));
}
/*
* Convert a string to an array of little-endian words
* If chrsz is ASCII, characters > have their hi-byte silently ignored.
*/
function strbinl(str)
{
var bin = Array();
var mask = ( << chrsz) - ;
for(var i = ; i < str.length * chrsz; i += chrsz)
bin[i>>] |= (str.charCodeAt(i / chrsz) & mask) << (i%);
return bin;
}
/*
* Convert an array of little-endian words to a hex string.
*/
function binlhex(binarray)
{
var hex_tab = hexcase ? "ABCDEF" : "abcdef";
var str = "";
for(var i = ; i < binarray.length * ; i++)
{
str += hex_tab.charAt((binarray[i>>] >> ((i%)*+)) & xF) +
hex_tab.charAt((binarray[i>>] >> ((i%)* )) & xF);
}
return str;
}
/*
* Convert an array of little-endian words to a base- string
*/
function binlb(binarray)
{
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/";
var str = "";
for(var i = ; i < binarray.length * ; i += )
{
var triplet = (((binarray[i >> ] >> * ( i %)) & xFF) << )
| (((binarray[i+ >> ] >> * ((i+)%)) & xFF) << )
| ((binarray[i+ >> ] >> * ((i+)%)) & xFF);
for(var j = ; j < ; j++)
{
if(i * + j * > binarray.length * ) str += bpad;
else str += tab.charAt((triplet >> *(-j)) & xF);
}
}
return str;
}
</script>