网站前端JS加密方法RAS加密可以PHP解密
有关数据加密解密问题，有很多钟加密方式。这里我就讲我最近使用到的其中的两种方法
一、首先第一种就是RAS的加密形式，我使用这种加密形式最要是看中他的16进制加密形式类似MD5的形式，机密以后的字符串没有特殊字符
1、首先我们看html部分，我们要先导入所需要的加密JS文件
测试加密信息
2、接着我们就要注意到JS加载的其中一个文件的配置了
// Depends on jsbn.js and rng.js
// Version 1.1: support utf-8 encoding in pkcs1pad2
// convert a (hex) string to a bignum object
function parseBigInt(str,r) {
return new BigInteger(str,r);
}
function linebrk(s,n) {
var ret = "";
var i = 0;
while(i + n < s.length) {
ret += s.substring(i,i+n) + "\n";
i += n;
}
return ret + s.substring(i,s.length);
}
function byte2Hex(b) {
if(b < 0x10)
return "0" + b.toString(16);
else
return b.toString(16);
}
// PKCS#1 (type 2, random) pad input string s to n bytes, and return a bigint
function pkcs1pad2(s,n) {
if(n < s.length + 11) { // TODO: fix for utf-8
alert("Message too long for RSA");
return null;
}
var ba = new Array();
var i = s.length - 1;
while(i >= 0 && n > 0) {
var c = s.charCodeAt(i--);
if(c < 128) { // encode using utf-8
ba[--n] = c;
}
else if((c > 127) && (c < 2048)) {
ba[--n] = (c & 63) | 128;
ba[--n] = (c >> 6) | 192;
}
else {
ba[--n] = (c & 63) | 128;
ba[--n] = ((c >> 6) & 63) | 128;
ba[--n] = (c >> 12) | 224;
}
}
ba[--n] = 0;
var rng = new SecureRandom();
var x = new Array();
while(n > 2) { // random non-zero pad
x[0] = 0;
while(x[0] == 0) rng.nextBytes(x);
ba[--n] = x[0];
}
ba[--n] = 2;
ba[--n] = 0;
return new BigInteger(ba);
}
// "empty" RSA key constructor
function RSAKey() {
//千万要注意这里的公钥配置一定要与密钥是一对，生成modulus的方法我会在下面介绍
var N="DB1EA572B55F5D9C8ADF092F5DCC3559CFEA8CE8BB54E3A71DA9B1AFBD7D17CF80ADB224FE4EA5379BC782F41C137748D8F1B5A36AD62A127EF5E87EFB25C209A66BCEE9925CE09631BF2271E81123E93438646625080FF04F4F2CF532B077E3E390486DF40E7586F0AE522C873F33170222F46BDB6084F55DE6B7031E55DBE7";
this.n = parseBigInt(N,16);
//注意我们这里使用的是10001是十六进制
this.e = parseInt("10001",16);
this.d = null;
this.p = null;
this.q = null;
this.dmp1 = null;
this.dmq1 = null;
this.coeff = null;
}
// Set the public key fields N and e from hex strings
function RSASetPublic(N,E) {
if(N != null && E != null && N.length > 0 && E.length > 0) {
this.n = parseBigInt(N,16);
this.e = parseInt(E,16);
}
else
alert("Invalid RSA public key");
}
// Perform raw public operation on "x": return x^e (mod n)
function RSADoPublic(x) {
return x.modPowInt(this.e, this.n);
}
// Return the PKCS#1 RSA encryption of "text" as an even-length hex string
function RSAEncrypt(text) {
var m = pkcs1pad2(text,(this.n.bitLength()+7)>>3);
if(m == null) return null;
var c = this.doPublic(m);
if(c == null) return null;
var h = c.toString(16);
if((h.length & 1) == 0) return h; else return "0" + h;
}
// Return the PKCS#1 RSA encryption of "text" as a Base64-encoded string
//function RSAEncryptB64(text) {
// var h = this.encrypt(text);
// if(h) return hex2b64(h); else return null;
//}
// protected
RSAKey.prototype.doPublic = RSADoPublic;
// public
RSAKey.prototype.setPublic = RSASetPublic;
RSAKey.prototype.encrypt = RSAEncrypt;
//RSAKey.prototype.encrypt_b64 = RSAEncryptB64;
3、最后就是我们的PHP文件机密代码了
/*如果多处使用最好是定义一个常量*/
define("RASKEY","-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----");
/*接到的表单参数*/
$password = trim($this->options['password']);
/*这里的判断是防止没有加密，或是不是这个加密形式的密码进行解密*/
if(strlen($password) == 256){
$encrypt_data = pack("H*", $password);//对十六进制数据进行转换
/*openssl的十六进制解密*/
if(openssl_private_decrypt($encrypt_data, $decrypt_data, RASKEY)){
$password = $decrypt_data;
}
}
4、生成公约和私钥的方法
二、RSA密钥生成命令
1、生成RSA私钥
openssl>openssl genrsa -out rsa_private_key.pem 1024
得到exponent: 10001
2、生成modulus:
openssl>openssl rsa -in rsa_private_key.pem -noout -modulus
3、生成RSA公钥
openssl>openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem
4、将RSA私钥转换成PKCS8格式（==========java使用===========）
openssl>openssl pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt
注意：“>”符号后面的才是需要输入的命令。
二、基于crypto-js的加密和PHP对此加密的解密及相同加密方式，这种加密缺点就是加密后的密文存在特殊字符
1、手续我看看html的文件
测试加密信息
2、PHP解密方法
// 定义变量
$pass = "en2JprK0nMyYgbd6dQO0O0OO0O0O";
$key_base = "contentWindowHig";
$iv_base = "contentDocuments";
// 解密
$pass = str_replace(' ','+',$pass);
$encryptedData = base64_decode($pass);
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key_base, $encryptedData, MCRYPT_MODE_CBC, $iv_base);
$decrypted =trim($decrypted);