【Java工具类】（27）—AES加密工具类

Java工具类（27）—AES加密工具类

package com.awifi.cloudnative.container.common.utils;import java.io.UnsupportedEncodingException;
import java.security.SecureRandom;
import java.util.Random;import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;import com.awifi.cloudnative.container.common.content.ErrorConstants;
import com.awifi.cloudnative.container.common.exception.BaseException;
import org.apache.tomcat.util.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;public class AESUtil {private static final Logger LOG = LoggerFactory.getLogger(AESUtil.class);public static final String CODE_TYPE = "UTF-8";//public static final String CODE_TYPE = "gb2312";public static final String AES_TYPE = "AES/ECB/NoPadding";private static final String ENCRYPTION = "AES";private static final String IV = "0000000000000000";public static String getKey() {Random random = new SecureRandom();StringBuilder sb = new StringBuilder();for (int i = 0; i < 16; i++) {int number = random.nextInt(3);long result = 0;switch (number) {case 0:result = Math.round(new SecureRandom().nextInt(25) + 65);sb.append((char) result);break;case 1:result = Math.round(new SecureRandom().nextInt(25) + 97);sb.append(String.valueOf((char) result));break;case 2:sb.append(String.valueOf(new SecureRandom().nextInt(10)));break;}}// sb.append("123456789012345");// sb.append("\0");return sb.toString();}//    public static void main(String args[]) {//        //生成15位字符串
//        String key = "yju5pH2e8yo6947F";
//        System.out.println("aes秘钥：" + key);
//        String sign = "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";
//        System.out.println(decrypt(sign, key));
//        String str = "{\"errorCode\":\"0\",\"errorMsg\":\"成功\"}";
//        sign = encrypt(str, key);
//        System.out.println("加密后：" + sign);
//        System.out.println("解密后：" + decrypt(sign, key));
//    }public AESUtil() {}/*** aes加密** @param cleartext 待加密串* @param key* @return base64后的加密串*/public static String encrypt(String cleartext, String password) {try {password = appendZero2Password(password);byte[] str = cleartext.getBytes(CODE_TYPE);str = completionCodeFor16Bytes(str);Cipher cipher = Cipher.getInstance(AES_TYPE);SecretKeySpec key = new SecretKeySpec(password.getBytes(), ENCRYPTION);//   IvParameterSpec iv = new IvParameterSpec(IV.getBytes());//cipher.init(Cipher.ENCRYPT_MODE, key, vi);cipher.init(Cipher.ENCRYPT_MODE, key);byte[] encryptedData = cipher.doFinal(str);String sign = Base64.encodeBase64String(encryptedData);LOG.debug("加密后的字符串：{}", sign);return sign;} catch (Exception e) {LOG.error("AES加密失败", e);throw new BaseException(ErrorConstants.ERR_EXCEPTION_000, "AES加密失败");}//   Pointer pointer = aesecb();/*  byte[] dst = new byte[200];Object object = aesecb(dst);System.out.println("pointer:" + object.getClass() + "*******");return aesecb(dst) + "";return  Base64.encodeBase64String(cleartext.getBytes());*/}/*** Aes解密** @param encrypted 待解密串* @param key* @return 原始数据*/public static String decrypt(String encrypted, String password) {try {password = appendZero2Password(password);byte[] byteMi = Base64.decodeBase64(encrypted);byteMi = completionCodeFor16Bytes(byteMi);SecretKeySpec key = new SecretKeySpec(password.getBytes(), ENCRYPTION);Cipher cipher = Cipher.getInstance(AES_TYPE);IvParameterSpec iv = new IvParameterSpec(IV.getBytes());//  cipher.init(Cipher.DECRYPT_MODE, key, iv);cipher.init(Cipher.DECRYPT_MODE, key);byte[] decryptedData = cipher.doFinal(byteMi);return new String(decryptedData, "utf-8").trim();} catch (Exception e) {LOG.error("AES解密失败" + e.getMessage());throw new BaseException(ErrorConstants.ERR_EXCEPTION_000, "AES解密失败");}/*byte[] byteMi = Base64.decodeBase64(encrypted);byte[] dst = new byte[200];return aesecb(dst) + "";byte[] decryptedData =  Base64.decodeBase64(encrypted);return new String(decryptedData).trim();*/}/*** mod16位补全** @param str 待加密串* @return 补全待加密串* @throws UnsupportedEncodingException 异常*/public static byte[] completionCodeFor16Bytes(byte[] str) throws UnsupportedEncodingException {int num = str.length;int index = 16 - num % 16;if (index == 16) {return str;}byte[] newStr = new byte[str.length + index];System.arraycopy(str, 0, newStr, 0, str.length);return newStr;}/*** mod8位补全** @param str 待加密串* @return 补全待加密串* @throws UnsupportedEncodingException 异常*/public static byte[] completionCodeFor4Bytes(byte[] str) throws UnsupportedEncodingException {int num = str.length;int index = 4 - num % 4;if (index == 4) {return str;}byte[] newStr = new byte[str.length + index];System.arraycopy(str, 0, newStr, 0, str.length);return newStr;}/*** 检验密钥并补全 \0** @return String* @throws* @author 范涌涛* @date 2020-05-12 15:22:34*/private static String appendZero2Password(String password) {if (null == password) {LOG.error("AES密钥长度错误");throw new BaseException(ErrorConstants.INNER_EXCEPTION_010, "AES密钥长度错误");}if (password.length() == 16) {return password;}StringBuilder sbBuilder = new StringBuilder(password);sbBuilder.append("\0");return sbBuilder.toString();}/** 宽带账号解密* 解密方法* @param data 要解密的数据* @param key  解密key* @param iv 解密iv* @return 解密的结果* @throws Exception*/public static String AccountdesEncrypt(String data, String key, String iv) {try {byte[] encrypted1 = new Base64().decode(data);Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);byte[] original = cipher.doFinal(encrypted1);String originalString = new String(original);return originalString.trim();} catch (Exception e) {e.printStackTrace();return null;}}
}

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【Java工具类】（27）—AES加密工具类

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