package com.util.aes;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.Base64Utils;
/**
* 使用AES对字符串进行加密
* @author dell
*
*/
public class Aes {
static Logger logAes = LoggerFactory.getLogger(Aes.class);
/**
* 加密
*
* @paramcontent需要加密的内容
* @parampassword加密密码
* @return
*/
public static byte[] encrypt(String content, String password) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");// 创建密码器
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
byte[] result = cipher.doFinal(byteContent);
return result;// 加密
} catch (NoSuchAlgorithmException e) {
logAes.error("NoSuchAlgorithmException="+e.getMessage());
} catch (NoSuchPaddingException e) {
logAes.error("NoSuchPaddingException="+e.getMessage());
} catch (InvalidKeyException e) {
logAes.error("InvalidKeyException", e);
} catch (UnsupportedEncodingException e) {
logAes.error("加密异常", e);
} catch (IllegalBlockSizeException e) {
logAes.error("加密异常", e);
} catch (BadPaddingException e) {
logAes.error("加密异常", e);
}
return null;
}
/**
* 解密
*
* @paramcontent待解密内容
* @parampassword解密密钥
* @return
*/
public static byte[] decrypt(byte[] content, String password) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(password.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");// 创建密码器
cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
byte[] result = cipher.doFinal(content);
return result;// 加密
} catch (NoSuchAlgorithmException e) {
logAes.error("解密异常", e);
} catch (NoSuchPaddingException e) {
logAes.error("解密异常", e);
} catch (InvalidKeyException e) {
logAes.error("解密异常", e);
} catch (IllegalBlockSizeException e) {
logAes.error("解密异常", e);
} catch (BadPaddingException e) {
logAes.error("解密异常", e);
}
return null;
}
/**
* 加密
*
* @paramcontent需要加密的内容
* @parampassword加密密码
* @return
*/
public static byte[] encrypt2(String content, String password) {
try {
SecretKeySpec key = new SecretKeySpec(password.getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
byte[] byteContent = content.getBytes("utf-8");//编码格式
cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
byte[] result = cipher.doFinal(byteContent);
return result;// 加密
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return null;
}
public static void main(String[] args) {
//待加密内容
String content = "bocetest123";
//秘钥
String password = "12345678";
// 加密
System.out.println("加密前：" + content);
byte[] encryptResult = encrypt(content, password);
String tt4 = Base64Utils.encodeToString(encryptResult);
System.out.println(new String(tt4));
// 解密
byte[] decryptResult = decrypt(encryptResult, password);
System.out.println("解密后：" + new String(decryptResult));
}
}