js加密，java解密
在做项目的时候，通常需要js加密" title="js加密">js加密，java解密，在网上找了一下，一个基于rsa的加密，解密方案。
js加密：
<!DOCTYPE html><html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="jsencrypt.min.js"></script>
<script type="text/javascript">
var encrypt = new JSEncrypt();
encrypt.setPublicKey("MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJK+CtxbfTYxQofcZ48yFb+MabIniIwG
" +
"5lhykq7y20Xe/7lcWQW1qL870LCsuWjlKy/GL+A5G2xta57a4Qy8Z78CAwEAAQ==");
console.log("这是123456的密文："+encrypt.encrypt("123456"));
</script>
</head>
<body>
2132
<a href="/authLogin">登录</a>
</body>
</html>
下载地址：https://codeload.github.com/travist/jsencrypt/zip/master
java解密：
package com.oauth.client;import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;
import javax.crypto.Cipher;
import org.apache.commons.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author lpf
* 在线密钥http://travistidwell.com/jsencrypt/demo/index.html
* pkcs8转码：http://tool.chacuo.net/cryptrsapkcs1pkcs8
*/
public class RSACoder {
private static Logger logger = LoggerFactory.getLogger(RSACoder.class);
public static final String KEY_ALGORITHM = "RSA";
public static final String SIGNATURE_ALGORITHM = "MD5withRSA";
private static final String PUBLIC_KEY = "RSAPublicKey";
private static final String PRIVATE_KEY = "RSAPrivateKey";
public static void main(String[] args) throws Exception {
String encryptAndBase64ByPublicKey = RSACoder.encryptAndBase64ByPublicKey("这里445545输入密文", publicKey);
System.out.println( encryptAndBase64ByPublicKey );
byte[] de = RSACoder.decryptBase64AndRSAByPrivateKey(encryptAndBase64ByPublicKey);
System.out.println(new String(de) );
de = RSACoder.decryptBase64AndRSAByPrivateKey(
"UfuAgO1OeEJ3rzxrkjZcnwxNtDwDp1yuaEgrDzT6p6cw9FRusZwb8MwCTf+rFVAvitXBUPrV/7Kr/cIoB3u7Fw=="
); System.out.println( new String(de) );
}
/**公钥，请换掉这里的key，乱写的**/
public static String publicKey = "MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJK+CtxbfTYxQofcZ48yFb+MabIniIwG
" +
"5lhykq7y20Xe/7lcWQW1qL870LCsuWjlKy/GL+A5G2xta57a4Qy8Z78CAwEAAQ==";
/**私钥，请换掉这里的key，乱写的**/
public static String privateKey =
"MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAkr4K3Ft9NjFCh9xn
" +
"jzIVv4xpsieIjAbmWHKSrvLbRd7/uVxZBbWovzvQsKy5aOUrL8Yv4DkbbG1rntrh
" +
"DLxnvwIDAQABAkBxuQJlwCmLpCVxcSh421HrfwAy51x1WKuPhEuVdfTlcj1yeqdD
" +
"I39QEH4ruXuZGNODsJrykRDruu8kW7gR6PmxAiEA1OhTrw3XaRmdDynIJ99UpiMz
" +
"m7DsbJjmBNqkcR3or/MCIQCwcWhXZefQHbPk4QGVkRUmE3UE2eKvyj7LsCr2lUEo
" +
"BQIgfn1o+l+m0vI8tX2FROsSR4IybxU14W8VeVzMxceXLrECIBG3ETbVMHUgxlMQ
" +
"lEwkCO+NvI4EIlJsB+oDggzH54bRAiEAoWP+zcIYPt1F3DSjGJJ0zwdFmuo2gNKE
" +
"gn2aM6Yg0Po=";
static {
init();
}
public static void init() {
/**
* 生成key
*/
// Map<String, Key> keyMap;
// try {
// keyMap = RSACoder.initKey();
// publicKey = RSACoder.getPublicKey(keyMap);
// privateKey = RSACoder.getPrivateKey(keyMap);
// } catch (Exception e) {
// // TODO Auto-generated catch block
// logger.error("初始化前端js加密秘钥失败：",e);
// }
logger.info("公钥:
" + publicKey);
logger.info("私钥：
" + privateKey);
}
public static byte[] decryptBASE64(String key) {
return Base64.decodeBase64(key);
}
public static String encryptBASE64(byte[] bytes) {
return Base64.encodeBase64String(bytes);
}
public static byte[] decryptBase64AndRSAByPrivateKey(String data)throws Exception{
return decryptByPrivateKey(RSACoder.decryptBASE64(data),privateKey);
}
/**
* 私钥解密
* @param data 要解密的base64编码的数据；
* @param key 私钥的base64编码数据；
* @return
* @throws Exception
*/
public static byte[] decryptAndBase64ByPrivateKey(String data, String key) throws Exception{
return decryptByPrivateKey(RSACoder.decryptBASE64(data),key);
}
/**
* 公钥加密
* 返回base64字符串
* @param data
* @param key
* @return
* @throws Exception
*/
public static String encryptAndBase64ByPublicKey(String data,String key) throws Exception {
return encryptBASE64(encryptByPublicKey(data,key));
}
/**
*
* 用私钥对信息生成数字签名
*
* @param data 加密数据
* @param privateKey 私钥
* @return
* @throws Exception
*/
public static String sign(byte[] data, String privateKey) throws Exception {
// 解密由base64编码的私钥
byte[] keyBytes = decryptBASE64(privateKey);
// 构造PKCS8EncodedKeySpec对象
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
// KEY_ALGORITHM 指定的加密算法
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
// 取私钥匙对象
PrivateKey priKey = keyFactory.generatePrivate(pkcs8KeySpec);
// 用私钥对信息生成数字签名
Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
signature.initSign(priKey);
signature.update(data);
return encryptBASE64(signature.sign());
}
/**
* 校验数字签名
*
* @param data 加密数据
* @param publicKey 公钥
* @param sign 数字签名
* @return 校验成功返回true 失败返回false
* @throws Exception
*/
public static boolean verify(byte[] data, String publicKey, String sign)
throws Exception {
// 解密由base64编码的公钥
byte[] keyBytes = decryptBASE64(publicKey);
// 构造X509EncodedKeySpec对象
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
// KEY_ALGORITHM 指定的加密算法
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
// 取公钥匙对象
PublicKey pubKey = keyFactory.generatePublic(keySpec);
Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM);
signature.initVerify(pubKey);
signature.update(data);
// 验证签名是否正常
return signature.verify(decryptBASE64(sign));
}
/**
* 使用私钥解密
* @param data
* @param privateKey
* @return
* @throws Exception
*/
public static byte[] decryptByPrivateKey(byte[] data, Key privateKey) throws Exception{
// 对数据解密
Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, privateKey);
return cipher.doFinal(data);
}
public static byte[] decryptByPrivateKey(byte[] data, String key) throws Exception{
// 对密钥解密
byte[] keyBytes = decryptBASE64(key);
// 取得私钥
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key privateKey = keyFactory.generatePrivate(pkcs8KeySpec);
return decryptByPrivateKey(data,privateKey);
}
/**
* 解密<br>
* 用私钥解密
*
* @param data
* @param key
* @return
* @throws Exception
*/
public static byte[] decryptByPrivateKey(String data, String key)
throws Exception {
return decryptByPrivateKey(decryptBASE64(data),key);
}
/**
* 解密<br>
* 用公钥解密
*
* @param data
* @param key
* @return
* @throws Exception
*/
public static byte[] decryptByPublicKey(byte[] data, String key)
throws Exception {
// 对密钥解密
byte[] keyBytes = decryptBASE64(key);
// 取得公钥
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key publicKey = keyFactory.generatePublic(x509KeySpec);
// 对数据解密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.DECRYPT_MODE, publicKey);
return cipher.doFinal(data);
}
/**
* 加密<br>
* 用公钥加密
*
* @param data
* @param key
* @return
* @throws Exception
*/
public static byte[] encryptByPublicKey(String data, String key)
throws Exception {
// 对公钥解密
byte[] keyBytes = decryptBASE64(key);
// 取得公钥
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key publicKey = keyFactory.generatePublic(x509KeySpec);
// 对数据加密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
return cipher.doFinal(data.getBytes());
}
/**
* 加密<br>
* 用私钥加密
*
* @param data
* @param key
* @return
* @throws Exception
*/
public static byte[] encryptByPrivateKey(byte[] data, String key)
throws Exception {
// 对密钥解密
byte[] keyBytes = decryptBASE64(key);
// 取得私钥
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key privateKey = keyFactory.generatePrivate(pkcs8KeySpec);
// 对数据加密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, privateKey);
return cipher.doFinal(data);
}
/**
* 取得私钥
*
* @param keyMap
* @return
* @throws Exception
*/
public static String getPrivateKey(Map<String, Key> keyMap)
throws Exception {
Key key = (Key) keyMap.get(PRIVATE_KEY);
return encryptBASE64(key.getEncoded());
}
/**
* 取得公钥
*
* @param keyMap
* @return
* @throws Exception
*/
public static String getPublicKey(Map<String, Key> keyMap)
throws Exception {
Key key = keyMap.get(PUBLIC_KEY);
return encryptBASE64(key.getEncoded());
}
/**
* 初始化密钥
*
* @return
* @throws NoSuchAlgorithmException
* @throws Exception
*/
public static Map<String, Key> initKey() throws NoSuchAlgorithmException {
KeyPairGenerator keyPairGen = KeyPairGenerator
.getInstance(KEY_ALGORITHM);
keyPairGen.initialize(1024);
KeyPair keyPair = keyPairGen.generateKeyPair();
Map<String, Key> keyMap = new HashMap<String, Key>(2);
keyMap.put(PUBLIC_KEY, keyPair.getPublic());// 公钥
keyMap.put(PRIVATE_KEY, keyPair.getPrivate());// 私钥
return keyMap;
}
}
在写私钥的时候，报了一个错误
Caused by: java.security.InvalidKeyException: IOException : algid parse error, not a sequence
需要私钥进行pkcs8转码：http://tool.chacuo.net/cryptrsapkcs1pkcs8
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