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java前后端加密解密crypto-js_java crypto

news 来源：原创 2024/7/7 6:49:35

}

let srcs = CryptoJS.enc.Utf8.parse(word);

var encrypted = CryptoJS.AES.encrypt(srcs, key, {

iv: iv,

mode: CryptoJS.mode.CBC,

padding: CryptoJS.pad.ZeroPadding

});

return CryptoJS.enc.Base64.stringify(encrypted.ciphertext);

}

/**

1. AES 解密：字符串 key iv 返回base64

2. 3. @return {string}

*/

export function Decrypt(word, keyStr, ivStr) {

let key = KEY;

let iv = IV;

if (keyStr) {

key = CryptoJS.enc.Utf8.parse(keyStr);

iv = CryptoJS.enc.Utf8.parse(ivStr);

}

let base64 = CryptoJS.enc.Base64.parse(word);

let src = CryptoJS.enc.Base64.stringify(base64);

let decrypt = CryptoJS.AES.decrypt(src, key, {

iv: iv,

mode: CryptoJS.mode.CBC,

padding: CryptoJS.pad.ZeroPadding

});

let decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);

return decryptedStr.toString();

}

三、前端页面引入并加密数据

import {Encrypt} from ‘…/…/secrt.js’

//text为需要加密的内容

var userId= Encrypt(text);

四、后端解密数据

1.pom引用

2.创建工具类

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

public class SecretUtil {
   /***
   * key和iv值可以随机生成,确保与前端的key,iv对应
   */
   private static String KEY = “abcdefgh12345678”;
   private static String IV = “12345678abcdefgh”;

/***
   * 加密
   *
   * @param data 要加密的数据
   * @return encrypt
   */
   public static String encrypt(String data) {
       return encrypt(data, KEY, IV);
   }

   /***

* 解密
   * @param data 要解密的数据
   */
   public static String desEncrypt(String data) {
       return desEncrypt(data, KEY, IV);
   }

/**
   * 加密方法
   */
   private static String encrypt(String data, String key, String iv) {
       try {
           // "算法/模式/补码方式"NoPadding PkcsPadding
           Cipher cipher = Cipher.getInstance(“AES/CBC/NoPadding”);
           int blockSize = cipher.getBlockSize();
           byte[] dataBytes = data.getBytes();
           int plaintextLength = dataBytes.length;
           if (plaintextLength % blockSize != 0) {
               plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
           }
           byte[] plaintext = new byte[plaintextLength];
           System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
           SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), “AES”);
           IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
           cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
           byte[] encrypted = cipher.doFinal(plaintext);

return new Base64().encodeToString(encrypted);
       } catch (Exception e) {