JavaScript实现AES加解密 Java实现AES加解密

超、凢脫俗 2022-10-19 13:58 261阅读 0赞

## Java版 ##

import javax.crypto.Cipher;
    import javax.crypto.spec.IvParameterSpec;
    import javax.crypto.spec.SecretKeySpec;
    import java.nio.charset.StandardCharsets;
    import java.security.Key;
    import java.security.spec.AlgorithmParameterSpec;
    import java.util.Base64;
    
    public class AESUtils { 
    
        private static final String CIPHER_ALGORITHM_CBC = "AES/CBC/PKCS5Padding";
        private static final String KEY_ALGORITHM = "AES";
    
        /** * AES加密 * * @param data 要加密的数据 * @param key key 长度16 * @param iv iv 长度16 * @return 加密后的数据byte[] * @throws Exception */
        public static byte[] encrypt(byte[] data, byte[] key, byte[] iv) throws Exception { 
            Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM_CBC);
            Key k = new SecretKeySpec(key, KEY_ALGORITHM);
            AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
            cipher.init(Cipher.ENCRYPT_MODE, k, paramSpec);
            return cipher.doFinal(data);
        }
    
        /** * AES解密 * * @param bytes 加密后的数据byte[] bytes * @param key key 长度16 * @param iv iv 长度16 * @return 解密后的数据 * @throws Exception */
        public static byte[] decrypt(byte[] bytes, byte[] key, byte[] iv) throws Exception { 
            Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM_CBC);
            Key k = new SecretKeySpec(key, KEY_ALGORITHM);
            AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
            cipher.init(Cipher.DECRYPT_MODE, k, paramSpec);
            return cipher.doFinal(bytes);
        }
    
        /** * AES加密后转base64 * * @param data 要加密的数据 * @param key key 长度16 * @param iv iv 长度16 * @return base64 * @throws Exception */
        public static String encodeToBase64String(String data, byte[] key, byte[] iv) throws Exception { 
            return Base64.getEncoder().encodeToString(encrypt(data.getBytes(StandardCharsets.UTF_8), key, iv));
        }
    
        /** * 解密经AES加密后的base64 * * @param data 经AES加密后的base64 * @param key key 长度16 * @param iv iv 长度16 * @return 解密后的数据 * @throws Exception */
        public static String decodeFromBase64String(String data, byte[] key, byte[] iv) throws Exception { 
            byte[] bytes = Base64.getDecoder().decode(data);
            return new String(decrypt(bytes, key, iv));
        }
    
        public static void main(String[] args) { 
            try { 
                byte[] key = "S0JsiZY2eHlgnRmv".getBytes();
                byte[] iv = "kezfopM2kJUn1VUN".getBytes();
                System.out.println("key:" + new String(key));
                System.out.println("iv:" + new String(iv));
                String content = "这是原始数据";
                String cipher = AESUtils.encodeToBase64String(content, key, iv);
                System.out.println("加密后的数据 -> \"" + cipher + "\"");
                String plain = AESUtils.decodeFromBase64String(cipher, key, iv);
                System.out.println("解密后的数据 -> \"" + plain + "\"");
            } catch (Exception e) { 
                e.printStackTrace();
            }
        }
    }

### 输出 ###

key:S0JsiZY2eHlgnRmv
    iv:kezfopM2kJUn1VUN
    加密后的数据 -> "cbHhL/Zmwtu6ffZL8sgIgUmAci1X9GdGIPl9/DMNOUQ="
    解密后的数据 -> "这是原始数据"

## JavaScript版 ##

### 安装 ###

npm install crypto-js --save

**github地址：[https://github.com/brix/crypto-js][https_github.com_brix_crypto-js]**

// import CryptoJS from 'crypto-js'
    let CryptoJS = require('crypto-js')
    
    /** * AES加密 * @param {string} data 要加密的数据 * @param {string} key 长度16 * @param {string} iv 长度16 * @returns 返回base64 */
    function Encrypt(data, key, iv) { 
      if (key && iv) { 
        key = CryptoJS.enc.Utf8.parse(key);
        iv = CryptoJS.enc.Utf8.parse(iv);
      }
      let srcs = CryptoJS.enc.Utf8.parse(data);
      let encrypt = CryptoJS.AES.encrypt(srcs, key, { 
        iv: iv,
        mode: CryptoJS.mode.CBC,  //AES加密的模式
        padding: CryptoJS.pad.Pkcs7
      });
      return CryptoJS.enc.Base64.stringify(encrypt.ciphertext);
    }
    
    /** * AES 解密 * @param {string} data 经AES加密后base64编码后的数据 * @param {string} key 长度16 * @param {string} iv 长度16 * @returns 解密后的数据 */
    function Decrypt(data, key, iv) { 
      if (key && iv) { 
        key = CryptoJS.enc.Utf8.parse(key);
        iv = CryptoJS.enc.Utf8.parse(iv);
      }
      let base64 = CryptoJS.enc.Base64.parse(data);
      let src = CryptoJS.enc.Base64.stringify(base64);
      let decrypt = CryptoJS.AES.decrypt(src, key, { 
        iv: iv,
        mode: CryptoJS.mode.CBC,  //AES解密的模式
        padding: CryptoJS.pad.Pkcs7
      });
      return decrypt.toString(CryptoJS.enc.Utf8).toString();
    }
    
    function test() { 
      let key = 'S0JsiZY2eHlgnRmv'
      let iv = 'kezfopM2kJUn1VUN'
      let data = '这是原始数据'
      let encrypted = Encrypt(data, key, iv)
      console.log("加密后的数据:" + encrypted)
      console.log("解密后的数据:" + Decrypt(encrypted, key, iv)) 
    }
    test()

### 输出 ###

加密后的数据:cbHhL/Zmwtu6ffZL8sgIgUmAci1X9GdGIPl9/DMNOUQ=
    解密后的数据:这是原始数据

[https_github.com_brix_crypto-js]: https://github.com/brix/crypto-js