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【Java】 AES加密，解密

作者:思无邪_NO1 / 发布于2015/3/5/ 623


	private static final String password = "test";
	private static SecretKeySpec keypSpec;
	private static Cipher cipher;
	
	private static void init(){
	
	 try {
	
	 KeyGenerator kenGen = KeyGenerator.getInstance("AES");
	 SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
	 secureRandom.setSeed(password.getBytes());
	 kenGen.init(128, secureRandom);
	
	 SecretKey secretKey = kenGen.generateKey();
	 byte[] encodeFormat = secretKey.getEncoded();
	
	 keypSpec = new SecretKeySpec(encodeFormat, "AES");
	
	 cipher = Cipher.getInstance("AES");
	
	 } catch (Exception e) {
	 log.error("init AES Key fail", e);
	 }
	 }
	
	 public final static byte[] AESencrypt(String content){
	
	 byte[] result = null;
	
	 try {
	
	 init();
	
	 byte[] byteContent = content.getBytes("UTF-8");
	 cipher.init(Cipher.ENCRYPT_MODE, keypSpec);
	
	 result = cipher.doFinal(byteContent);
	
	 } catch (Exception e) {
	 log.error("encrypt AES fail", e);
	 }
	
	 return result;
	 }
	
	 public final static String AESdecrypt(byte[] content){
	
	 String result = null;
	
	 try {
	
	 init();
	
	 cipher.init(Cipher.DECRYPT_MODE, keypSpec);
	
	 result = new String(cipher.doFinal(content),"UTF-8");
	
	 } catch (Exception e) {
	 log.error("decrypt AES fail", e);
	 }
	
	 return result;
	 }

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