1 files changed, 131 insertions, 0 deletions
diff --git a/crypto/src/tls/HandshakeType.cs b/crypto/src/tls/HandshakeType.cs
new file mode 100644
index 000000000..563cd1150
--- /dev/null
+++ b/crypto/src/tls/HandshakeType.cs
@@ -0,0 +1,131 @@
+using System;
+
+namespace Org.BouncyCastle.Tls
+{
+    public abstract class HandshakeType
+    {
+        /*
+         * RFC 2246 7.4
+         */
+        public const short hello_request = 0;
+        public const short client_hello = 1;
+        public const short server_hello = 2;
+        public const short certificate = 11;
+        public const short server_key_exchange = 12;
+        public const short certificate_request = 13;
+        public const short server_hello_done = 14;
+        public const short certificate_verify = 15;
+        public const short client_key_exchange = 16;
+        public const short finished = 20;
+
+        /*
+         * RFC 3546 2.4
+         */
+        public const short certificate_url = 21;
+        public const short certificate_status = 22;
+
+        /*
+         * (DTLS) RFC 4347 4.3.2
+         */
+        public const short hello_verify_request = 3;
+
+        /*
+         * RFC 4680
+         */
+        public const short supplemental_data = 23;
+
+        /*
+         * RFC 8446
+         */
+        public const short new_session_ticket = 4;
+        public const short end_of_early_data = 5;
+        public const short hello_retry_request = 6;
+        public const short encrypted_extensions = 8;
+        public const short key_update = 24;
+        public const short message_hash = 254;
+
+        public static string GetName(short handshakeType)
+        {
+            switch (handshakeType)
+            {
+            case hello_request:
+                return "hello_request";
+            case client_hello:
+                return "client_hello";
+            case server_hello:
+                return "server_hello";
+            case certificate:
+                return "certificate";
+            case server_key_exchange:
+                return "server_key_exchange";
+            case certificate_request:
+                return "certificate_request";
+            case server_hello_done:
+                return "server_hello_done";
+            case certificate_verify:
+                return "certificate_verify";
+            case client_key_exchange:
+                return "client_key_exchange";
+            case finished:
+                return "finished";
+            case certificate_url:
+                return "certificate_url";
+            case certificate_status:
+                return "certificate_status";
+            case hello_verify_request:
+                return "hello_verify_request";
+            case supplemental_data:
+                return "supplemental_data";
+            case new_session_ticket:
+                return "new_session_ticket";
+            case end_of_early_data:
+                return "end_of_early_data";
+            case hello_retry_request:
+                return "hello_retry_request";
+            case encrypted_extensions:
+                return "encrypted_extensions";
+            case key_update:
+                return "key_update";
+            case message_hash:
+                return "message_hash";
+            default:
+                return "UNKNOWN";
+            }
+        }
+
+        public static string GetText(short handshakeType)
+        {
+            return GetName(handshakeType) + "(" + handshakeType + ")";
+        }
+
+        public static bool IsRecognized(short handshakeType)
+        {
+            switch (handshakeType)
+            {
+            case hello_request:
+            case client_hello:
+            case server_hello:
+            case certificate:
+            case server_key_exchange:
+            case certificate_request:
+            case server_hello_done:
+            case certificate_verify:
+            case client_key_exchange:
+            case finished:
+            case certificate_url:
+            case certificate_status:
+            case hello_verify_request:
+            case supplemental_data:
+            case new_session_ticket:
+            case end_of_early_data:
+            case hello_retry_request:
+            case encrypted_extensions:
+            case key_update:
+            case message_hash:
+                return true;
+            default:
+                return false;
+            }
+        }
+    }
+}