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Raj.KamalRaj.Kamal
Raj.Kamal
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Raj.Kamal
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Added Cryptography project
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‎Cryptography/App.config

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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
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</startup>
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</configuration>

‎Cryptography/CryptProgram.cs

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using System.IO;
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using System.Text;
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using System;
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using CommandLineParser.Arguments;
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using CommandLineParser.Exceptions;
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using System.Text.RegularExpressions;
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namespace Cryptography
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{
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class CryptProgram
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{
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static void Main(string[] args)
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{
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CommandLineParser.CommandLineParser parser = new CommandLineParser.CommandLineParser();
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var p = new CommandLineOptions();
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Regex r = new Regex("(.*)=(.*)");
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Match m = r.Match(args[0]);
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parser.AcceptEqualSignSyntaxForValueArguments = true;
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parser.PreserveValueQuotesForEqualsSignSyntax = true;
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parser.AllowShortSwitchGrouping = false;
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parser.AcceptHyphen = true;
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parser.ExtractArgumentAttributes(p);
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try {
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parser.ParseCommandLine(args);
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}
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catch (CommandLineException e) {
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Console.WriteLine(e.Message);
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parser.ShowUsage();
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}
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parser.ShowParsedArguments();
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var encrypter = new Encrypter();
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string text, pass, code;
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text = p.text;
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pass = p.key;
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if (p.decrypt == false) {
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code = encrypter.Encrypt(text, pass);
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Console.Write("Encrypted: ");
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Console.Write(code);
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}
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else {
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try {
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code = encrypter.Decrypt(text, pass);
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Console.Write(code);
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Console.Write(code);
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}
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catch(FormatException fex){
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Console.WriteLine("Format Exception: text is not in ocrrect format. \r\nException message: "+fex.Message);
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}
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Console.Write("Decrypted: ");
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}
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}
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}
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class CommandLineOptions
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{
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[ValueArgument(typeof(string), "text", Description = "Plain/Cipher Text")]
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public string text { get; set; }
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[ValueArgument(typeof(string), "key", Description = "Encryption Key")]
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public string key { get; set; }
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/* SwitchArguments - for on/off boolean logic */
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[SwitchArgument('d', "decrypt", false, Description = "Set this to decrypt")]
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public bool decrypt { get; set; }
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/* SwitchArguments - for on/off boolean logic */
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[SwitchArgument('e', "encrypt", false, Description = "Set this to decrypt")]
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public bool encrypt { get; set; }
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}
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}

‎Cryptography/Cryptography.csproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{1CD41E18-C241-4F3E-A9D1-25249C818AB1}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<RootNamespace>Cryptography</RootNamespace>
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<AssemblyName>Cryptography</AssemblyName>
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<TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="CommandLineArgumentsParser, Version=3.0.11.0, Culture=neutral, PublicKeyToken=16ad7bf6f4a1666c, processorArchitecture=MSIL">
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<HintPath>..\packages\CommandLineArgumentsParser.3.0.11\lib\net45\CommandLineArgumentsParser.dll</HintPath>
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<Private>True</Private>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="encrypter.cs" />
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<Compile Include="CryptProgram.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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<None Include="packages.config" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
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Other similar extension points exist, see Microsoft.Common.targets.
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<Target Name="BeforeBuild">
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</Target>
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<Target Name="AfterBuild">
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</Target>
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-->
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</Project>

‎Cryptography/Properties/AssemblyInfo.cs

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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("Cryptography")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("Cryptography")]
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[assembly: AssemblyCopyright("Copyright © 2017")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// The following GUID is for the ID of the typelib if this project is exposed to COM
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[assembly: Guid("85f02b4a-6a31-4722-89f9-0332ac9909a0")]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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// You can specify all the values or you can default the Build and Revision Numbers
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// by using the '*' as shown below:
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]

‎Cryptography/encrypter.cs

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Security.Cryptography;
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using System.IO;
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namespace Cryptography
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{
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public class Encrypter
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{
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public byte[] randomBytes { get; set; }
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public Encrypter(byte[] secretBytes = null)
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{
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if (secretBytes == null)
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secretBytes = new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x5d, 0x75, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 };
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this.randomBytes = secretBytes;
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}
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public string Encrypt(string clearText, string EncryptionKey)
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{
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byte[] clearBytes = Encoding.Unicode.GetBytes(clearText);
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using (Aes encryptor = Aes.Create()) {
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Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, this.randomBytes);
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encryptor.Key = pdb.GetBytes(32);
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encryptor.IV = pdb.GetBytes(16);
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using (MemoryStream ms = new MemoryStream()) {
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using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write)) {
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cs.Write(clearBytes, 0, clearBytes.Length);
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cs.Close();
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}
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clearText = Convert.ToBase64String(ms.ToArray());
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}
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}
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return clearText;
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}
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public string Decrypt(string cipherText, string EncryptionKey)
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{
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cipherText = cipherText.Replace(" ", "+");
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byte[] cipherBytes = Convert.FromBase64String(cipherText);
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using (Aes encryptor = Aes.Create()) {
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Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, this.randomBytes);
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encryptor.Key = pdb.GetBytes(32);
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encryptor.IV = pdb.GetBytes(16);
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using (MemoryStream ms = new MemoryStream()) {
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using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write)) {
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cs.Write(cipherBytes, 0, cipherBytes.Length);
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cs.Close();
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}
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cipherText = Encoding.Unicode.GetString(ms.ToArray());
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}
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}
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return cipherText;
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}
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}
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}

‎Cryptography/packages.config

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<?xml version="1.0" encoding="utf-8"?>
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<packages>
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<package id="CommandLineArgumentsParser" version="3.0.11" targetFramework="net45" />
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</packages>

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