cipher prep

logging in soon
This commit is contained in:
Malloc of Kuzkycyziklistan 2017-05-17 16:06:16 -05:00
parent cb68ad8c2a
commit 3fb9399440
10 changed files with 174 additions and 4 deletions

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@ -1 +0,0 @@
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@ -65,6 +65,7 @@
<HintPath>packages\System.Data.SQLite.Linq.1.0.105.0\lib\net46\System.Data.SQLite.Linq.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="System.Numerics" />
<Reference Include="System.Runtime.Serialization" />
<Reference Include="System.Security" />
<Reference Include="System.Xml.Linq" />
@ -96,6 +97,8 @@
<Compile Include="DAL\Users.cs">
<DependentUpon>ScapeDb.tt</DependentUpon>
</Compile>
<Compile Include="Encryption\KeyExchange.cs" />
<Compile Include="Encryption\Cipher.cs" />
<Compile Include="Socks\ActiveConnection.cs" />
<Compile Include="Entrypoint.cs" />
<Compile Include="Socks\PendingConnection.cs" />

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@ -0,0 +1,38 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CircleScape.Encryption {
class Cipher {
static void ksa(byte[] state, byte[] key) {
int i, j = 0, t;
for(i = 0; i < 256; ++i)
state[i] = (byte)i;
for(i = 0; i < 256; ++i) {
j = (j + state[i] + key[i % key.Length]) % 256;
t = state[i];
state[i] = state[j];
state[j] = (byte)t;
}
}
static void prga(byte[] state, byte[] cipher) {
int i = 0, j = 0, x, t;
for(x = 0; x < cipher.Length; ++x) {
i = (i + 1) % 256;
j = (j + state[i]) % 256;
t = state[i];
state[i] = state[j];
state[j] = (byte)t;
cipher[x] = state[(state[i] + state[j]) % 256];
}
}
// http://bradconte.com/rc4_c
}
}

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@ -0,0 +1,17 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Numerics;
namespace CircleScape.Encryption {
class KeyExchange {
private BigInteger Secret;
public BigInteger Generator { get; private set; }
public BigInteger Modulus { get; private set; }
public BigInteger PrivateKey { get; private set; }
// https://security.stackexchange.com/questions/45963/diffie-hellman-key-exchange-in-plain-english/45971#45971
}
}

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@ -6,10 +6,14 @@ using System.Text;
using System.Threading.Tasks;
using CircleScape.DAL;
using System.Numerics;
using Square;
namespace CircleScape {
class Entrypoint {
static void Main(string[] args) {
var a = Square.Random.NextPrime(512 / 8);
Console.WriteLine(a.ToString("X"));
var server = new Kneesocks.Server<PendingConnection>(6770, PoolManager.Pending);
server.Start();

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@ -41,8 +41,6 @@ namespace Kneesocks {
private List<Frame> SendFrameBuffer = new List<Frame>();
private const int MaximumSendFrameSize = 0xFFFFF;
private Random Random = new Random();
protected const int PingInterval = 30;
protected const int TimeoutInterval = 120;
private byte[] PingData = Encoding.ASCII.GetBytes("woomy!");

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@ -3,6 +3,8 @@ using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Numerics;
using System.Globalization;
namespace Square {
public static class NumericExtensions {
@ -29,7 +31,7 @@ namespace Square {
public static byte[] Pack(this UInt32 value) {
return BitConverter.GetBytes(value).HostToNetworkOrder();
}
public static byte[] Pack(this Int64 value) {
return BitConverter.GetBytes(value).HostToNetworkOrder();
}
@ -37,5 +39,36 @@ namespace Square {
public static byte[] Pack(this UInt64 value) {
return BitConverter.GetBytes(value).HostToNetworkOrder();
}
public static bool IsDivisibleBy(this BigInteger value, BigInteger dividend) {
if(value.IsZero) return false;
if(value.IsOne) return true;
if(value == 2) return value.IsEven;
return (value % dividend).IsZero;
}
public static bool IsProbablePrime(this BigInteger value, int iterations = 5) {
var absValue = BigInteger.Abs(value);
if(absValue == 1) return false;
if(absValue == 2 || absValue == 3 || absValue == 5) return true;
if(absValue.IsEven || absValue.IsDivisibleBy(3) || absValue.IsDivisibleBy(5)) return false;
if(absValue < 25) return true;
for(var i = 0; i < iterations; ++i) {
var rand = Random.NextBigInt(2, absValue - 2);
if(!BigInteger.ModPow(rand, absValue - 1, absValue).IsOne) return false;
}
return true;
}
public static string ToHexString(this BigInteger value) {
return value.ToString("X").ToLower();
}
public static BigInteger HexStringToBigInt(this string value) {
return BigInteger.Parse(value, NumberStyles.HexNumber);
}
}
}

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@ -0,0 +1,74 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Numerics;
namespace Square {
public static class Random {
private static System.Random RandCtx = new System.Random();
public static int Next() {
lock(RandCtx) {
return RandCtx.Next();
}
}
public static int Next(int maxValue) {
lock(RandCtx) {
return RandCtx.Next(maxValue);
}
}
public static int Next(int minValue, int maxValue) {
lock(RandCtx) {
return RandCtx.Next(minValue, maxValue);
}
}
public static double NextDouble() {
lock(RandCtx) {
return RandCtx.NextDouble();
}
}
public static void NextBytes(byte[] buffer) {
lock(RandCtx) {
RandCtx.NextBytes(buffer);
}
}
public static byte[] NextBytes(int length) {
lock(RandCtx) {
var buffer = new byte[length];
RandCtx.NextBytes(buffer);
return buffer;
}
}
public static BigInteger NextPrime(int byteCount) {
var bytes = new byte[byteCount];
BigInteger prime;
do {
NextBytes(bytes);
prime = BigInteger.Abs(new BigInteger(bytes)) | 1;
} while(!prime.IsProbablePrime());
return prime;
}
public static BigInteger NextBigInt(BigInteger minValue, BigInteger maxValue) {
var byteCount = maxValue.ToByteArray().Length;
var randomNumber = BigInteger.Abs(new BigInteger(NextBytes(byteCount)));
var delta = maxValue - minValue + 1;
return minValue + (randomNumber % delta);
}
public static BigInteger NextBigInt(int byteCount) {
return BigInteger.Abs(new BigInteger(NextBytes(byteCount)));
}
}
}

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@ -32,6 +32,7 @@
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Core" />
<Reference Include="System.Numerics" />
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="Microsoft.CSharp" />
@ -43,6 +44,7 @@
<Compile Include="ArrayExtensions.cs" />
<Compile Include="CryptoExtensions.cs" />
<Compile Include="NumericExtensions.cs" />
<Compile Include="RandomContext.cs" />
<Compile Include="StringExtensions.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
</ItemGroup>

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@ -11,6 +11,8 @@ namespace CircleScape {
class PendingConnection : Connection {
private DateTime ConnectionOpened;
protected override void OnOpen() {
ConnectionOpened = DateTime.UtcNow;
}