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cipher

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Ahmed Zamil
2024-03-25 17:59:55 +03:00
parent 81f9f92755
commit 8ab0e811bd
21 changed files with 255 additions and 100 deletions
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8
Esiur/Esiur.csproj
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@ -1,7 +1,6 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<Description>Distributed Resources Platform</Description>
<Copyright>Ahmed Kh. Zamil</Copyright>
<PackageProjectUrl>http://www.esiur.com</PackageProjectUrl>
@ -18,6 +17,7 @@
<Product>Esiur</Product>
<LangVersion>latest</LangVersion>
<PackageLicenseFile>LICENSE</PackageLicenseFile>
<TargetFramework>netstandard2.0</TargetFramework>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
@ -83,10 +83,10 @@
<ItemGroup>
<None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
<None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
<!-- Package the Newtonsoft.Json dependency alongside the generator assembly -->
<None Include="$(PkgSystem_Text_Json)\lib\netstandard2.0\*.dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
<None Include="Tools/*" Pack="true" PackagePath="tools/" />
<None Include="$(PkgSystem_Text_Json)\lib\netstandard2.0\*.dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
<None Include="Tools/*" Pack="true" PackagePath="tools/" />
</ItemGroup>

20
Esiur/Net/IIP/DistributedConnection.cs
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@ -228,10 +228,10 @@ public partial class DistributedConnection : NetworkConnection, IStore
{
var dmn = DC.ToBytes(session.LocalAuthentication.Domain);
if (session.Encrypted)
if (session.KeyExchanger != null)
{
// create key
//var ecdh = System.Security.Cryptography.ECAlgorithm.ECDiffieHellman.Create();
var key = session.KeyExchanger.GetPublicKey();
if (session.LocalAuthentication.Method == AuthenticationMethod.Credentials)
{
@ -240,9 +240,12 @@ public partial class DistributedConnection : NetworkConnection, IStore
var un = DC.ToBytes(session.LocalAuthentication.Username);
SendParams()
.AddUInt8(0x60)
.AddUInt8(0x60 | 0x2)
.AddUInt8((byte)dmn.Length)
.AddUInt8Array(dmn)
.AddUInt16(session.KeyExchanger.Identifier)
.AddUInt16((ushort)key.Length)
.AddUInt8Array(key)
.AddUInt8Array(localNonce)
.AddUInt8((byte)un.Length)
.AddUInt8Array(un)
@ -252,9 +255,12 @@ public partial class DistributedConnection : NetworkConnection, IStore
{
SendParams()
.AddUInt8(0x70)
.AddUInt8(0x70 | 0x2)
.AddUInt8((byte)dmn.Length)
.AddUInt8Array(dmn)
.AddUInt16(session.KeyExchanger.Identifier)
.AddUInt16((ushort)key.Length)
.AddUInt8Array(key)
.AddUInt8Array(localNonce)
.AddUInt64(session.LocalAuthentication.TokenIndex)
.Done();//, dmn, localNonce, token
@ -262,10 +268,14 @@ public partial class DistributedConnection : NetworkConnection, IStore
}
else if (session.LocalAuthentication.Method == AuthenticationMethod.None)
{
// @REVIEW: MITM Attack can still occure
SendParams()
.AddUInt8(0x40)
.AddUInt8(0x40 | 0x2)
.AddUInt8((byte)dmn.Length)
.AddUInt8Array(dmn)
.AddUInt16(session.KeyExchanger.Identifier)
.AddUInt16((ushort)key.Length)
.AddUInt8Array(key)
.Done();//, dmn, localNonce, token
}
else

5
Esiur/Security/Authority/Session.cs
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@ -30,6 +30,7 @@ using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Esiur.Security.Cryptography;
namespace Esiur.Security.Authority;
public class Session
@ -50,7 +51,9 @@ public class Session
Authentication localAuth, remoteAuth;
//string domain;
public bool Encrypted { get; set; }
public IKeyExchanger KeyExchanger { get; set; } = null;
public ISymetricCipher SymetricCipher { get; set; } = null;
public Session(Authentication localAuthentication, Authentication remoteAuthentication)

14
Esiur/Security/Cryptography/IKeyExchanger.cs Normal file
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@ -0,0 +1,14 @@
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);
}
}

14
Esiur/Security/Cryptography/ISymetricCipher.cs Normal file
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@ -0,0 +1,14 @@
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);
}
}