cipher

Esiur/Security/Cryptography/IKeyExchanger.cs

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+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace Esiur.Security.Cryptography
+{
+    public interface IKeyExchanger
+    {
+        public ushort Identifier { get; }
+        public byte[] GetPublicKey();
+        public byte[] ComputeSharedKey(byte[] key);
+    }
+}

Esiur/Security/Cryptography/ISymetricCipher.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Esiur.Security.Cryptography
+{
+    public interface ISymetricCipher
+    {
+        public ushort Identifier { get; }
+        public byte[] Encrypt(byte[] data);
+        public byte[] Decrypt(byte[] data);
+        public byte[] SetKey(byte[] key);
+    }
+}