/// <summary>MAC値を検証</summary>
 /// <param name="msg">メッセージ(文字列)</param>
 /// <param name="ekha">MACアルゴリズム列挙型</param>
 /// <param name="key">キー(文字列)</param>
 /// <param name="mac">MAC値(base64文字列)</param>
 /// <returns>検証結果( true:検証成功, false:検証失敗 )</returns>
 public static bool VerifyMAC(string msg, EnumKeyedHashAlgorithm ekha, string key, string mac)
 {
     return(MsgAuthCode.VerifyMAC(
                CustomEncode.StringToByte(msg, CustomEncode.UTF_8),
                ekha, CustomEncode.StringToByte(key, CustomEncode.UTF_8),
                CustomEncode.FromBase64String(mac)));
 }
        /// <summary>MAC値を検証</summary>
        /// <param name="msg">メッセージ(バイト配列)</param>
        /// <param name="ekha">MACアルゴリズム列挙型</param>
        /// <param name="key">キー(バイト配列)</param>
        /// <param name="mac">MAC値(バイト配列)</param>
        /// <returns>検証結果( true:検証成功, false:検証失敗 )</returns>
        public static bool VerifyMAC(byte[] msg, EnumKeyedHashAlgorithm ekha, byte[] key, byte[] mac)
        {
            // 文字列にしてから計算
            string paramMac = CustomEncode.ToBase64String(mac);
            string calcMac  = CustomEncode.ToBase64String(MsgAuthCode.GetMAC(msg, ekha, key));

            return(paramMac == calcMac);
        }
 /// <summary>MAC値を返す。</summary>
 /// <param name="msg">メッセージ(バイト配列)</param>
 /// <param name="ekha">MACアルゴリズム列挙型</param>
 /// <param name="key">キー(バイト配列)</param>
 /// <returns>MAC値(バイト配列)</returns>
 public static byte[] GetMAC(byte[] msg, EnumKeyedHashAlgorithm ekha, byte[] key)
 {
     return(MsgAuthCode.GetKeyedHashBytes(msg, ekha, key));
 }
 /// <summary>MAC値を返す。</summary>
 /// <param name="msg">メッセージ(文字列)</param>
 /// <param name="ekha">MACアルゴリズム列挙型</param>
 /// <param name="key">キー(文字列)</param>
 /// <returns>MAC値(base64文字列)</returns>
 public static string GetMAC(string msg, EnumKeyedHashAlgorithm ekha, string key)
 {
     return(CustomEncode.ToBase64String(MsgAuthCode.GetMAC(
                                            CustomEncode.StringToByte(msg, CustomEncode.UTF_8),
                                            ekha, CustomEncode.StringToByte(key, CustomEncode.UTF_8))));
 }