package org.jeecg.common.util.encryption;
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import org.apache.shiro.codec.Base64;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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/**
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* @Description: AES 加密
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* @author: jeecg-boot
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* @date: 2022/3/30 11:48
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*/
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public class AesEncryptUtil {
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/**
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* 使用AES-128-CBC加密模式 key和iv可以相同
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*/
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private static String KEY = EncryptedString.key;
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private static String IV = EncryptedString.iv;
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/**
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* 加密方法
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* @param data 要加密的数据
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* @param key 加密key
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* @param iv 加密iv
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* @return 加密的结果
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* @throws Exception
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*/
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public static String encrypt(String data, String key, String iv) throws Exception {
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try {
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//"算法/模式/补码方式"NoPadding PkcsPadding
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Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
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int blockSize = cipher.getBlockSize();
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byte[] dataBytes = data.getBytes();
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int plaintextLength = dataBytes.length;
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if (plaintextLength % blockSize != 0) {
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plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
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}
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byte[] plaintext = new byte[plaintextLength];
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System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
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SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
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IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
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cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
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byte[] encrypted = cipher.doFinal(plaintext);
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return Base64.encodeToString(encrypted);
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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/**
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* 解密方法
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* @param data 要解密的数据
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* @param key 解密key
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* @param iv 解密iv
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* @return 解密的结果
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* @throws Exception
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*/
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public static String desEncrypt(String data, String key, String iv) throws Exception {
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//update-begin-author:taoyan date:2022-5-23 for:VUEN-1084 【vue3】online表单测试发现的新问题 6、解密报错 ---解码失败应该把异常抛出去，在外面处理
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byte[] encrypted1 = Base64.decode(data);
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Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
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SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
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IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
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cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
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byte[] original = cipher.doFinal(encrypted1);
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String originalString = new String(original);
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//加密解码后的字符串会出现\u0000
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return originalString.replaceAll("\\u0000", "");
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//update-end-author:taoyan date:2022-5-23 for:VUEN-1084 【vue3】online表单测试发现的新问题 6、解密报错 ---解码失败应该把异常抛出去，在外面处理
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}
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/**
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* 使用默认的key和iv加密
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* @param data
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* @return
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* @throws Exception
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*/
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public static String encrypt(String data) throws Exception {
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return encrypt(data, KEY, IV);
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}
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/**
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* 使用默认的key和iv解密
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* @param data
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* @return
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* @throws Exception
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*/
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public static String desEncrypt(String data) throws Exception {
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return desEncrypt(data, KEY, IV);
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}
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// /**
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// * 测试
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// */
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// public static void main(String args[]) throws Exception {
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// String test1 = "sa";
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// String test =new String(test1.getBytes(),"UTF-8");
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// String data = null;
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// String key = KEY;
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// String iv = IV;
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// // /g2wzfqvMOeazgtsUVbq1kmJawROa6mcRAzwG1/GeJ4=
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// data = encrypt(test, key, iv);
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// System.out.println("数据："+test);
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// System.out.println("加密："+data);
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// String jiemi =desEncrypt(data, key, iv).trim();
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// System.out.println("解密："+jiemi);
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// }
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}
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