c#实现 sha224算法（java对应HMAC-SHA224）

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public static string Hex(byte[] data)         {             var sb = new StringBuilder();             foreach (var t in data)             {                 sb.Append(t.ToString("X2"));             }               return sb.ToString();         }           /// <summary>         /// 哈希计算         /// </summary>         /// <param name="data">输入字符串</param>         /// <param name="key">密钥KEY</param>         /// <param name="algorithm">密文算法，参考Algorithms.cs中提供的HMac algorithm</param>         /// <returns>哈希值</returns>         public static string HMacSHA224(string data, string key, string algorithm = YAlgorithms.HMacSHA224)         {             return Hex(Compute(data, key, algorithm));         }           /// <summary>         /// 哈希计算         /// </summary>         /// <param name="data">输入字符串</param>         /// <param name="key">密钥KEY</param>         /// <param name="algorithm">密文算法，参考Algorithms.cs中提供的HMac algorithm</param>         /// <returns>哈希值</returns>         public static byte[] Compute(string data, string key, string algorithm = YAlgorithms.HMacSHA224)         {             var keyParameter = new Org.BouncyCastle.Crypto.Parameters.KeyParameter(Encoding.UTF8.GetBytes(key));             var input = Encoding.UTF8.GetBytes(data);             var mac = Org.BouncyCastle.Security.MacUtilities.GetMac(algorithm);             mac.Init(keyParameter);             mac.BlockUpdate(input, 0, input.Length);             return Org.BouncyCastle.Security.MacUtilities.DoFinal(mac);         }

　　

引入dll：BouncyCastle.dll

调用：var data=

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1	HMacSHA224

("123456","keytest对应你们key");   

改为自己的