package com.cn.ssm.test;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
public class AESTest {
static final String ALGORITHM = "AES";
static final String CHARSET_NAME = "utf-8";
static Charset charset = Charset.forName(CHARSET_NAME);
public static SecretKey generateKay() throws NoSuchAlgorithmException {
KeyGenerator keyGenerator = KeyGenerator.getInstance(ALGORITHM);
SecureRandom secureRandom = new SecureRandom();
keyGenerator.init(secureRandom);
SecretKey secretKey = keyGenerator.generateKey();
return secretKey;
}
public static byte[] encrypt(String content, SecretKey secretKey) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {
return aes(content.getBytes(charset), Cipher.ENCRYPT_MODE, secretKey);
}
public static String decrypt(byte[] contentArray, SecretKey secretKey) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {
byte[] result = aes(contentArray, Cipher.DECRYPT_MODE, secretKey);
return new String(result,CHARSET_NAME);
}
public static byte[] aes(byte[] contentArray, int mode, SecretKey secretKey) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(mode, secretKey);
byte[] result = cipher.doFinal(contentArray);
return result;
}
public static void main(String[] args) {
String content = "hshj加密解密你好啊377843843";
try {
SecretKey secretKey = generateKay();
byte[] encryptResult = encrypt(content, secretKey);
String decryptResult = decrypt(encryptResult, secretKey);
System.out.println("加密後的結果==》"+encryptResult);
System.out.println("解密後的結果==》"+decryptResult);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
