JS前端关于加密和解密
一、前端的base64使用方法<html><head><meta charset="utf-8"><title>前端的base64使用方法</title></head><body></body><script>var str = "hello";var str64 = window.btoa
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一、前端的base64使用方法
<html>
<head>
<meta charset="utf-8">
<title>前端的base64使用方法</title>
</head>
<body>
</body>
<script>
var str = "hello";
var str64 = window.btoa(str);
console.log("字符串是:" + str);
console.log("经base64编码后:" + str64);
console.log("base64解码后:" + window.atob(str64));
</script>
</html>二、base64加密
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>base64加密</title>
<script type="text/javascript" src="js/base64.js"></script>
<script type="text/javascript">
var b = new Base64();
var str = b.encode("hello");
alert("base64 encode:" + str);
//base64 encode:MTIzZGFmZA==
//解密
str = b.decode(str);
alert("base64 decode:" + str);
//base64 decode:123dafd
</script>
</head>
<body>
</body>
</html>base64.js
/**
*
* Base64 encode / decode
*
* @author haitao.tu
* @date 2010-04-26
* @email tuhaitao@foxmail.com
*
*/
function Base64() {
// private property
_keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
// public method for encoding
this.encode = function(input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = _utf8_encode(input);
while(i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if(isNaN(chr2)) {
enc3 = enc4 = 64;
} else if(isNaN(chr3)) {
enc4 = 64;
}
output = output +
_keyStr.charAt(enc1) + _keyStr.charAt(enc2) +
_keyStr.charAt(enc3) + _keyStr.charAt(enc4);
}
return output;
}
// public method for decoding
this.decode = function(input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while(i < input.length) {
enc1 = _keyStr.indexOf(input.charAt(i++));
enc2 = _keyStr.indexOf(input.charAt(i++));
enc3 = _keyStr.indexOf(input.charAt(i++));
enc4 = _keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if(enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if(enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
output = _utf8_decode(output);
return output;
}
// private method for UTF-8 encoding
_utf8_encode = function(string) {
string = string.replace(/\r\n/g, "\n");
var utftext = "";
for(var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if(c < 128) {
utftext += String.fromCharCode(c);
} else if((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
} else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
}
// private method for UTF-8 decoding
_utf8_decode = function(utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while(i < utftext.length) {
c = utftext.charCodeAt(i);
if(c < 128) {
string += String.fromCharCode(c);
i++;
} else if((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i + 1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string;
}
}三、JS函数的escape()加密 和 unescape()解密
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<!--JS函数的escape()和unescape()，分别是编码和解码字符串-->
<script type="text/javascript">
var escape1 = escape("我的名字是：mosquito~"); //编码
console.log(escape1);
var unescape1 = unescape(escape1); //解码
console.log(unescape1);
</script>
</head>
<body>
</body>
</html>四、sha1加密
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>sha1加密</title>
<script src="https://cdn.bootcss.com/js-sha1/0.6.0/sha1.js"></script>
<script type="text/javascript">
var sha1_1 = sha1("mosquito~");
console.log(sha1_1);
var sha1_2 = sha1("admin:1001");
console.log(sha1_2);
</script>
</head>
<body>
</body>
</html>五、md5加密
<!DOCTYPE HTML>
<html>
<!--关于MD5：
MD5.js是通过前台js加密的方式对用户信息，密码等私密信息进行加密处理的工具，也可称为插件。
MD5共有6种加密方法：
1， hex_md5(value)
2， b64_md5(value)
3， str_md5(value)
4， hex_hmac_md5(key, data)
5， b64_hmac_md5(key, data)
6， str_hmac_md5(key, data)
-->
<head>
<meta charset="utf-8">
<title>md5加密</title>
<script type="text/ecmascript" src="js/md5.js"></script>
<script>
var code = "123456";
var username = "123456";
var password = "123456";
var str1 = hex_md5("123456");
var str2 = b64_md5("123456");
var str3 = str_md5("123456");
var str4 = hex_hmac_md5(code,code);
var str5 = b64_hmac_md5(username,username);
var str6 = str_hmac_md5(password,password);
console.log(str1); // e10adc3949ba59abbe56e057f20f883e
console.log(str2); // 4QrcOUm6Wau+VuBX8g+IPg
console.log(str3); // áÜ9IºY«¾VàWò��>
console.log(str4); // 30ce71a73bdd908c3955a90e8f7429ef
console.log(str5); // MM5xpzvdkIw5VakOj3Qp7w
console.log(str6); // 0Îq§;Ý��9U©��t)ï
</script>
</head>
<body>
</body>
</html>六、AES/DES加密解密
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>AES/DES加密解密</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/crypto-js.min.js"></script>
<script>
var aseKey = "12345678" //秘钥必须为：8/16/32位
var message = "80018000142";
//加密
var encrypt = CryptoJS.AES.encrypt(message, CryptoJS.enc.Utf8.parse(aseKey), {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
}).toString();
console.log(encrypt); //VKrZlqykem73x8/T2oCfCQ==
//解密
var decrypt = CryptoJS.AES.decrypt(encrypt, CryptoJS.enc.Utf8.parse(aseKey), {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
}).toString(CryptoJS.enc.Utf8);
console.log(decrypt); //80018000142
</script>
</head>
<body>
</body>
</html>
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