后台对Json数据加密、解密
1、工具类
package com.abc.er.util; import org.apache.commons.codec.binary.Base64; import javax.crypto.*; import javax.crypto.spec.SecretKeySpec; import java.security.SecureRandom; public class AesUtil { public static void main(String[] args) throws Exception { // aes + base --> aes + base String content = "{\"mac\":\"123\",\"idfa\":\"123\",\"clientIp\":\"456\",insertTime\":\"test\"}"; System.out.println("加密内容:" + content); String key = "123abc"; System.out.println("加密密钥和解密密钥:" + key); String encrypt = aesEncrypt(content, key); System.out.println("加密后:" +encrypt); String decrypt = aesDecrypt(encrypt, key); System.out.println("解密后:" + decrypt); } /** * 编码 * @param bstr * @return String */ public static String Base64encode(byte[] bstr) { return Base64.encodeBase64String(bstr); } /** * 解码 * @param str * @return string */ public static byte[] Base64decode(String str) { return Base64.decodeBase64(str); } /* * AES加密 * @param content 待加密的内容 * @param encryptKey 加密密钥 * @return 加密后的byte[] * @throws Exception */ public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); /*防止linux下 随机生成key*/ SecureRandom random = SecureRandom.getInstance("SHA1PRNG"); random.setSeed(encryptKey.getBytes()); kgen.init(128, random); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES")); return cipher.doFinal(content.getBytes("UTF-8")); } /** * AES加密为base 64 code * @param content 待加密的内容 * @param encryptKey 加密密钥 * @return 加密后的base 64 code * @throws Exception */ public static String aesEncrypt(String content, String encryptKey) throws Exception { return Base64encode(aesEncryptToBytes(content, encryptKey)); } /** * AES解密 * @param encryptBytes 待解密的byte[] * @param decryptKey 解密密钥 * @return 解密后的String * @throws Exception */ public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) { byte[] decryptBytes = new byte[0]; try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); /*防止linux下 随机生成key*/ SecureRandom random = SecureRandom.getInstance("SHA1PRNG"); random.setSeed(decryptKey.getBytes()); kgen.init(128, random); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES")); decryptBytes = cipher.doFinal(encryptBytes); return new String(decryptBytes,"UTF-8"); } catch (Exception e) { e.printStackTrace(); } return decryptKey; } /** * 将base 64 code AES解密 * @param encryptStr 待解密的base 64 code * @param decryptKey 解密密钥 * @return 解密后的string * @throws Exception */ public static String aesDecrypt(String encryptStr, String decryptKey){ return aesDecryptByBytes(Base64decode(encryptStr), decryptKey); } }
2、controller中调用
//加密stg为需要加密的方法 String strd = AesUtil.aesEncrypt(stg, "123abc"); //解密 String strd = AesUtil.aesDecrypt(stg, "123abc");