仿真平台内核初版 -tlib库 包含<sparc arm riscv powerPC>

lib/Packet.Net/PacketDotNet/Tcp/MD5Signature.cs

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+/*
+This file is part of PacketDotNet
+
+PacketDotNet is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+PacketDotNet is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with PacketDotNet.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+ *  Copyright 2010 Evan Plaice <evanplaice@gmail.com>
+ */
+using System;
+using MiscUtil.Conversion;
+using PacketDotNet.Utils;
+
+namespace PacketDotNet.Tcp
+{
+    /// <summary>
+    /// MD5 Signature
+    ///  Carries the MD5 Digest used by the BGP protocol to
+    ///   ensure security between two endpoints
+    /// </summary>
+    /// <remarks>
+    /// References:
+    ///  http://datatracker.ietf.org/doc/rfc2385/
+    /// </remarks>
+    public class MD5Signature : Option
+    {
+        #region Constructors
+
+        /// <summary>
+        /// Creates a MD5 Signature Option
+        /// </summary>
+        /// <param name="bytes">
+        /// A <see cref="System.Byte[]"/>
+        /// </param>
+        /// <param name="offset">
+        /// A <see cref="System.Int32"/>
+        /// </param>
+        /// <param name="length">
+        /// A <see cref="System.Int32"/>
+        /// </param>
+        public MD5Signature(byte[] bytes, int offset, int length) :
+            base(bytes, offset, length)
+        { }
+
+        #endregion
+
+        #region Properties
+
+        /// <summary>
+        /// The MD5 Digest
+        /// </summary>
+        public byte[] MD5Digest
+        {
+            get
+            {
+                byte[] data = new byte[Length - MD5DigestFieldOffset];
+                Array.Copy(Bytes, MD5DigestFieldOffset, data, 0, data.Length);
+                return data;
+            }
+        }
+
+        #endregion
+
+        #region Methods
+
+        /// <summary>
+        /// Returns the Option info as a string
+        /// </summary>
+        /// <returns>
+        /// A <see cref="System.String"/>
+        /// </returns>
+        public override string ToString()
+        {
+            return "[" + Kind.ToString() + ": MD5Digest=0x" + MD5Digest.ToString() + "]";
+        }
+
+        #endregion
+
+        #region Members
+
+        // the offset (in bytes) of the MD5 Digest field
+        const int MD5DigestFieldOffset = 2;
+
+        #endregion
+    }
+}