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Julian
2023-07-30 12:44:37 +02:00
commit d3081f97a1
32 changed files with 472 additions and 0 deletions
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3
Signing/.vscode/settings.json vendored Normal file
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{
"dotnet.defaultSolution": "Signing.sln"
}

77
Signing/Program.cs Normal file
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using System.Security.Cryptography;
using System.Text;
// ---- Hashing example
var data = "My Passwort";
HashAlgorithm sha = SHA256.Create();
byte[] result = sha.ComputeHash(Encoding.ASCII.GetBytes(data));
foreach(var byt in result)
{
Console.Write($"{byt:X}");
}
// ----
// ---- Signing
/*
Verifying a digital signature is the opposite of signing data.
Verifying a signature will tell you if the signed data has changed
or not. When a digital signature is verified, the signature is decrypted
using the public key to produce the original hash value. The data that was
signed is hashed. If the two hash values match, then the signature has been
verified. To do this, write a program.
publicKey kann verschlüssen. Nur der privat key kann aber Entschlüssen.
*/
// https://learn.microsoft.com/en-us/dotnet/standard/security/cryptographic-signatures
using SHA256 alg = SHA256.Create();
byte[] data = Encoding.ASCII.GetBytes("Hello, from the .NET Docs!");
byte[] hash = alg.ComputeHash(data);
RSAParameters sharedParameters;
byte[] signedHash;
// Generate signature
using (RSA rsa = RSA.Create())
{
sharedParameters = rsa.ExportParameters(false); //Public key
RSAPKCS1SignatureFormatter rsaFormatter = new(rsa);
rsaFormatter.SetHashAlgorithm(nameof(SHA256));
signedHash = rsaFormatter.CreateSignature(hash);
}
// Verify signature
using (RSA rsa = RSA.Create())
{
rsa.ImportParameters(sharedParameters); //Public key
RSAPKCS1SignatureDeformatter rsaDeformatter = new(rsa);
rsaDeformatter.SetHashAlgorithm(nameof(SHA256));
if (rsaDeformatter.VerifySignature(hash, signedHash))
{
Console.WriteLine("The signature is valid.");
}
else
{
Console.WriteLine("The signature is not valid.");
}
}
// ----

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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.5.002.0
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Signing", "Signing.csproj", "{446297B3-C8E1-4312-92C4-6697B6A060BB}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{446297B3-C8E1-4312-92C4-6697B6A060BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{446297B3-C8E1-4312-92C4-6697B6A060BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
{446297B3-C8E1-4312-92C4-6697B6A060BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
{446297B3-C8E1-4312-92C4-6697B6A060BB}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {7A747AF1-E00D-44CB-A976-FD91E4DD036E}
EndGlobalSection
EndGlobal

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{
"runtimeTarget": {
"name": ".NETCoreApp,Version=v7.0",
"signature": ""
},
"compilationOptions": {},
"targets": {
".NETCoreApp,Version=v7.0": {
"Signing/1.0.0": {
"runtime": {
"Signing.dll": {}
}
}
}
},
"libraries": {
"Signing/1.0.0": {
"type": "project",
"serviceable": false,
"sha512": ""
}
}
}

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Signing/bin/Debug/net7.0/Signing.runtimeconfig.json Normal file
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{
"runtimeOptions": {
"tfm": "net7.0",
"framework": {
"name": "Microsoft.NETCore.App",
"version": "7.0.0"
}
}
}

4
Signing/obj/Debug/net7.0/.NETCoreApp,Version=v7.0.AssemblyAttributes.cs Normal file
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// <autogenerated />
using System;
using System.Reflection;
[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v7.0", FrameworkDisplayName = ".NET 7.0")]

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Signing/obj/Debug/net7.0/Signing.AssemblyInfo.cs Normal file
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//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated by a tool.
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
using System;
using System.Reflection;
[assembly: System.Reflection.AssemblyCompanyAttribute("Signing")]
[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
[assembly: System.Reflection.AssemblyProductAttribute("Signing")]
[assembly: System.Reflection.AssemblyTitleAttribute("Signing")]
[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
// Von der MSBuild WriteCodeFragment-Klasse generiert.

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f0fb5878b2be5a9ef8f505c5564faa37e8efe06f

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Signing/obj/Debug/net7.0/Signing.GeneratedMSBuildEditorConfig.editorconfig Normal file
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is_global = true
build_property.TargetFramework = net7.0
build_property.TargetPlatformMinVersion =
build_property.UsingMicrosoftNETSdkWeb =
build_property.ProjectTypeGuids =
build_property.InvariantGlobalization =
build_property.PlatformNeutralAssembly =
build_property.EnforceExtendedAnalyzerRules =
build_property._SupportedPlatformList = Linux,macOS,Windows
build_property.RootNamespace = Signing
build_property.ProjectDir = C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\

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Signing/obj/Debug/net7.0/Signing.GlobalUsings.g.cs Normal file
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// <auto-generated/>
global using global::System;
global using global::System.Collections.Generic;
global using global::System.IO;
global using global::System.Linq;
global using global::System.Net.Http;
global using global::System.Threading;
global using global::System.Threading.Tasks;

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4811e0b889ffc1f96fb9ae2e9e51b979c88a2219

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Signing/obj/Debug/net7.0/Signing.csproj.FileListAbsolute.txt Normal file
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C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\bin\Debug\net7.0\Signing.exe
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\bin\Debug\net7.0\Signing.deps.json
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\bin\Debug\net7.0\Signing.runtimeconfig.json
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\bin\Debug\net7.0\Signing.dll
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\bin\Debug\net7.0\Signing.pdb
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\obj\Debug\net7.0\Signing.dll
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\obj\Debug\net7.0\refint\Signing.dll
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\obj\Debug\net7.0\Signing.pdb
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\obj\Debug\net7.0\Signing.genruntimeconfig.cache
C:\Users\gulum\Desktop\Projekte\UnderstandCrypt\Signing\obj\Debug\net7.0\ref\Signing.dll

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Signing/obj/Signing.csproj.nuget.dgspec.json Normal file
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