Rombethor.FileSigCheck 1.1.0

.NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 
dotnet add package Rombethor.FileSigCheck --version 1.1.0                

                    
                

            
NuGet\Install-Package Rombethor.FileSigCheck -Version 1.1.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Rombethor.FileSigCheck" Version="1.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Rombethor.FileSigCheck --version 1.1.0                

                    
                

            
#r "nuget: Rombethor.FileSigCheck, 1.1.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Rombethor.FileSigCheck as a Cake Addin
#addin nuget:?package=Rombethor.FileSigCheck&version=1.1.0

// Install Rombethor.FileSigCheck as a Cake Tool
#tool nuget:?package=Rombethor.FileSigCheck&version=1.1.0

File Signature Checking

Checks the initial bytes of a file against known file signatures based on file extensions. It's a security measure, stops people uploading PDFs instead of JPGs, but does not provide 100% protection against malicious actors.

Feed a Stream of the file's contents like so:

bool result = FileSigCheck.IsValidFileSignature(filename, stream, new string[] { ".jpg", ".png", ".gif" });

If you're working with Base64 strings, you can do the following to check for b64 jpg/jpeg, png and gif images:

bool result = FileSigCheck.IsValidBase64Image(b64ImageString);

This project is a slow side-project. Collaboration is welcome.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • .NETStandard 2.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.1.0 175 5/12/2023
1.0.0 397 9/24/2021