protocol formatting test

other stuff too

protocol.md

@@ -34,10 +34,14 @@ All numbers, unless otherwise specified, are the string representation of a base
 
 #### Server to Client
 
-0. Login/registration request. 
+0. Diffie-Hellman key exchange
+| Region |     |     | Length |
+| ------ | --- | --- | ------ |
+| test | a | b | c |
 
 #### Client to Server
 
+0. Diffie-Hellman key exchange
 
 
 ## Sockstamps

server/Encryption/Cipher.cs

@@ -32,7 +32,5 @@ namespace CircleScape.Encryption {
                 cipher[x] = state[(state[i] + state[j]) % 256];
             }
         }
-
-        // http://bradconte.com/rc4_c
     }
 }

server/Encryption/KeyExchange.cs

@@ -4,14 +4,18 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Numerics;
+using Square;
 
 namespace CircleScape.Encryption {
     class KeyExchange {
         private BigInteger Secret;
-        public BigInteger Generator { get; private set; }
+        public BigInteger Generator { get; private set; } = 2;
         public BigInteger Modulus { get; private set; }
-        public BigInteger PrivateKey { get; private set; }
+        public BigInteger PrivateKey { get; private set; } = BigInteger.MinusOne;
 
-        // https://security.stackexchange.com/questions/45963/diffie-hellman-key-exchange-in-plain-english/45971#45971
+        public KeyExchange() {
+            Secret = RNG.NextPrime(512 / 8);
+            Modulus = RNG.NextPrime(512 / 8);
+        }
     }
 }

server/Entrypoint.cs

@@ -11,7 +11,7 @@ using Square;
 namespace CircleScape {
     class Entrypoint {
         static void Main(string[] args) {
-            var a = Square.Random.NextPrime(512 / 8);
+            var a = Square.RNG.NextPrime(512 / 8);
             Console.WriteLine(a.ToString("X"));
 
             var server = new Kneesocks.Server<PendingConnection>(6770, PoolManager.Pending);

server/Libraries/Square/NumericExtensions.cs

@@ -56,7 +56,7 @@ namespace Square {
             if(absValue < 25) return true;
 
             for(var i = 0; i < iterations; ++i) {
-                var rand = Random.NextBigInt(2, absValue - 2);
+                var rand = RNG.NextBigInt(2, absValue - 2);
                 if(!BigInteger.ModPow(rand, absValue - 1, absValue).IsOne) return false;
             }
 

server/Libraries/Square/RandomContext.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 using System.Numerics;
 
 namespace Square {
-    public static class Random {
+    public static class RNG {
         private static System.Random RandCtx = new System.Random();
 
         public static int Next() {