85 lines
1.9 KiB
Java
85 lines
1.9 KiB
Java
package com.imyeyu.api.util;
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import org.springframework.stereotype.Component;
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import javax.crypto.Cipher;
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import javax.crypto.KeyGenerator;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.SecretKeySpec;
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/**
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* AES 加解密
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*
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* @author 夜雨
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* @version 2021-08-11 00:52
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*/
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@Component
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public class AES {
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/**
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* 生产密钥
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*
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* @return 密钥
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* @throws Exception 生产异常
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*/
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public byte[] initKey() throws Exception {
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KeyGenerator keyGen = KeyGenerator.getInstance("AES");
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keyGen.init(256);
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return keyGen.generateKey().getEncoded();
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}
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/**
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* 加密字符串
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*
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* @param data 待加密字符串
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* @param key 密钥
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* @return 加密结果
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* @throws Exception 加密异常
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*/
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public byte[] encrypt(String data, byte[] key) throws Exception {
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return encrypt(data.getBytes(), key);
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}
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/**
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* 加密
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*
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* @param data 待加密字节数据
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* @param key 密钥
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* @return 加密结果
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* @throws Exception 加密异常
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*/
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public byte[] encrypt(byte[] data, byte[] key) throws Exception {
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SecretKey secretKey = new SecretKeySpec(key, "AES");
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Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
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cipher.init(Cipher.ENCRYPT_MODE, secretKey); // 密钥
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return cipher.doFinal(data); // 加密返回
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}
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/**
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* 解密字符串
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*
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* @param data 待解密字节数据
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* @param key 密钥
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* @return 解密结果
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* @throws Exception 解密异常
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*/
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public byte[] decrypt(String data, byte[] key) throws Exception {
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return decrypt(data.getBytes(), key);
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}
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/**
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* 解密
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*
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* @param data 待解密字节数据
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* @param key 密钥
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* @return 解密结果
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* @throws Exception 解密异常
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*/
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public byte[] decrypt(byte[] data, byte[] key) throws Exception {
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SecretKey secretKey = new SecretKeySpec(key, "AES");
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Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
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cipher.init(Cipher.DECRYPT_MODE, secretKey);
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return cipher.doFinal(data);
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}
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}
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