#yyds干货盘点# java通过mysql的加解密函数实现敏感字段存储

 java通过mysql的加解密函数实现敏感字段存储

1.AES加解密工具类：

public class AESUtils {

    public static String encrypt(String password, String strKey) {
        try {
            SecretKey key = generateMySQLAESKey(strKey,"ASCII");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] cleartext = password.getBytes("UTF-8");
            byte[] ciphertextBytes = cipher.doFinal(cleartext);
            return new String(Hex.encodeHex(ciphertextBytes));

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String decrypt(String content, String aesKey){
        try {
            SecretKey key = generateMySQLAESKey(aesKey,"ASCII");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] cleartext = Hex.decodeHex(content.toCharArray());
            byte[] ciphertextBytes = cipher.doFinal(cleartext);
            return new String(ciphertextBytes, "UTF-8");

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (DecoderException e) {
            e.printStackTrace();
        }
        return null;
    }


    public static SecretKeySpec generateMySQLAESKey(final String key, final String encoding) {
        try {
            final byte[] finalKey = new byte[16];
            int i = 0;
            for(byte b : key.getBytes(encoding))
                finalKey[i++%16] ^= b;
            return new SecretKeySpec(finalKey, "AES");
        } catch(UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }
    }

    public static String getAesKey(){
        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for(int i = 0; i < 16; i++){
            sb.append(random.nextInt(10));
        }
        return sb.toString();
    }

   public static void main(String[] args){
       String abc = "1";
       String aeskey = "3532263592381276";
       String a1= encrypt(abc, aeskey);
       System.out.println("加密后：" + a1);
       System.out.println("解密后：" +decrypt(a1, aeskey));
   }

   
}

运行main方法结果：

加密后：62b778a8ccaa40cce4c9e4e42c693665
解密后：1

2.mysql的sql加解密：

生成16随机盐：3532263592381276

select  concat((SELECT CEILING(RAND()*9000000000000000+1000000000000000)),'');

加密：62B778A8CCAA40CCE4C9E4E42C693665

SELECT (HEX(AES_ENCRYPT(1,"3532263592381276")))

解密：1

SELECT AES_DECRYPT(UNHEX("62B778A8CCAA40CCE4C9E4E42C693665"),"3532263592381276")

3.实现效果：

java工具类加解密和mysql的加解密效果是一样的。