C#与Java AES 加密解密

2018-12-11 09:05:48来源：博客园阅读 ()

参考文档:https://www.cnblogs.com/xbzhu/p/7064642.html

前几天对接Java接口，需要C#加密参数，Java解密。奈何网上找了一堆大同小异的加解密方法都跟Jaca加密的密文不一致，Java接口也无法解密，直到看见上面链接的第二种方法。能够正常的解密Java加密的密文，说明此方法有效，但这里只有解密，我需要的是加密方法(伸手党做习惯了)，没办法读读代码看看是怎么解密的，巧了看到了 CreateDecryptor 改一下试一下解密跟Java完全一致成功！感谢博主！

这是参考文档的博主写的Demo:https://github.com/zhu-xb/AES-Cryptography

    /// <summary>
    /// AES解密
    /// </summary>
    /// <param name="data"></param>
    /// <param name="key"></param>
    /// <returns></returns>
    public static string AESDecrypt(string content, string key)
    {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(Encoding.ASCII.GetBytes(key));
        kgen.init(128, secureRandom);
        SecretKey secretKey = kgen.generateKey();
        byte[] enCodeFormat = secretKey.getEncoded();

        using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
        {
            aesProvider.Key = enCodeFormat;
            aesProvider.Mode = CipherMode.ECB;
            aesProvider.Padding = PaddingMode.PKCS7;
            using (ICryptoTransform cryptoTransform = aesProvider.CreateDecryptor())
            {
                byte[] inputBuffers = Convert.FromBase64String(content);
                byte[] results = cryptoTransform.TransformFinalBlock(inputBuffers, 0, inputBuffers.Length);
                aesProvider.Clear();
                return Encoding.UTF8.GetString(results);
            }
        }
    }

 /// <summary>
    /// AES加密
    /// </summary>
    /// <param name="data"></param>
    /// <param name="key"></param>
    /// <returns></returns>
    public static string AESEncrypt(string content, string key)
    {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(Encoding.ASCII.GetBytes(key));
        kgen.init(128, secureRandom);
        SecretKey secretKey = kgen.generateKey();
        byte[] enCodeFormat = secretKey.getEncoded();

        using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
        {
            aesProvider.Key = enCodeFormat;
            aesProvider.Mode = CipherMode.ECB;
            aesProvider.Padding = PaddingMode.PKCS7;
            using (ICryptoTransform cryptoTransform = aesProvider.CreateEncryptor())
            {
                byte[] inputBuffers = Encoding.UTF8.GetBytes(content);
                byte[] results = cryptoTransform.TransformFinalBlock(inputBuffers, 0, inputBuffers.Length);
                aesProvider.Clear();
                return Convert.ToBase64String(results);
            }
        }
    }