From 8d2a2cd5de40e2b94ef5007c32832ed9a063dc40 Mon Sep 17 00:00:00 2001
From: chai <215380520@qq.com>
Date: Thu, 12 Oct 2023 22:09:49 +0800
Subject: +hazel-networking

---
 .../Hazel/Dtls/IHandshakeCipherSuite.cs            | 63 ++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Tools/Hazel-Networking/Hazel/Dtls/IHandshakeCipherSuite.cs

(limited to 'Tools/Hazel-Networking/Hazel/Dtls/IHandshakeCipherSuite.cs')

diff --git a/Tools/Hazel-Networking/Hazel/Dtls/IHandshakeCipherSuite.cs b/Tools/Hazel-Networking/Hazel/Dtls/IHandshakeCipherSuite.cs
new file mode 100644
index 0000000..eedd977
--- /dev/null
+++ b/Tools/Hazel-Networking/Hazel/Dtls/IHandshakeCipherSuite.cs
@@ -0,0 +1,63 @@
+using System;
+
+namespace Hazel.Dtls
+{
+    /// <summary>
+    /// DTLS cipher suite interface for the handshake portion of
+    /// the connection.
+    /// </summary>
+    public interface IHandshakeCipherSuite : IDisposable
+    {
+        /// <summary>
+        /// Gets the size of the shared key
+        /// </summary>
+        /// <returns>Size of the shared key in bytes </returns>
+        int SharedKeySize();
+
+        /// <summary>
+        /// Calculate the size of the ServerKeyExchnage message
+        /// </summary>
+        /// <param name="privateKey">
+        /// Private key that will be used to sign the message
+        /// </param>
+        /// <returns>Size of the message in bytes</returns>
+        int CalculateServerMessageSize(object privateKey);
+
+        /// <summary>
+        /// Encodes the ServerKeyExchange message
+        /// </summary>
+        /// <param name="privateKey">Private key to use for signing</param>
+        void EncodeServerKeyExchangeMessage(ByteSpan output, object privateKey);
+
+        /// <summary>
+        /// Verifies the authenticity of a server key exchange
+        /// message and calculates the shared secret.
+        /// </summary>
+        /// <returns>
+        /// True if the authenticity has been validated and a shared key
+        /// was generated. Otherwise, false.
+        /// </returns>
+        bool VerifyServerMessageAndGenerateSharedKey(ByteSpan output, ByteSpan serverKeyExchangeMessage, object publicKey);
+
+        /// <summary>
+        /// Calculate the size of the ClientKeyExchange message
+        /// </summary>
+        /// <returns>Size of the message in bytes</returns>
+        int CalculateClientMessageSize();
+
+        /// <summary>
+        /// Encodes the ClientKeyExchangeMessage
+        /// </summary>
+        void EncodeClientKeyExchangeMessage(ByteSpan output);
+
+        /// <summary>
+        /// Verifies the validity of a client key exchange message
+        /// and calculats the hsared secret.
+        /// </summary>
+        /// <returns>
+        /// True if the client exchange message is valid and a
+        /// shared key was generated. Otherwise, false.
+        /// </returns>
+        bool VerifyClientMessageAndGenerateSharedKey(ByteSpan output, ByteSpan clientKeyExchangeMessage);
+    }
+}
-- 
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