CrcDotNET 1.0.1

There is a newer version of this package available.
See the version list below for details.

dotnet add package CrcDotNET --version 1.0.1

NuGet\Install-Package CrcDotNET -Version 1.0.1

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="CrcDotNET" Version="1.0.1" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="CrcDotNET" Version="1.0.1" />
                    

                            Directory.Packages.props

<PackageReference Include="CrcDotNET" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add CrcDotNET --version 1.0.1

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: CrcDotNET, 1.0.1"

#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.

#addin nuget:?package=CrcDotNET&version=1.0.1
                    

                            Install as a Cake Addin

#tool nuget:?package=CrcDotNET&version=1.0.1
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Crc.NET

.NET Standard library for calculating any CRC checksums

Motivation

I recently wrote a C++ library crc.h, this is more or less a direct C# port of it, since our codebase consists of both C++ and C# it was useful to have a native C# implementation of it.

Usage

The main class is CrcBase, it implements System.Security.Cryptography.HashAlgorithm. There are child classes for popular bit lengths: Crc8Base, Crc16Base, Crc32Base

Configurable parameters are:

Size The bit width of the CRC checksum
Polynomial A polynomial to use for CRC computation
InitialValue Initial value of the checksum
FinalXorValue Value to XOR the rsult with after finishing computation
ReflectInput Whether or not the input is reflected (bit order reversed)
ReflectOutput Whether or not the result is reflected (bit order reversed)
ExpectedCheck A checksum of an ASCII string "123456789". Used as a correctness check. Optional

By providing constructor parameters or deriving child classes, you can construct any CRC implementation. For example:

class Crc32 : Crc32Base
{
    public Crc32() : base(0x04C11DB7, 0xFFFFFFFF, 0xFFFFFFFF, true, true)
    {
    }
}

The usage is then quite simple:

Crc32 crc = new Crc32();
byte[] bytes = Encoding.ASCII.GetBytes("abc123");
byte[] resultBytes = crc.ComputeHash(bytes);
uint resultNum = BitConverter.ToUInt32(resultBytes, 0);

The library uses a 256-length lookup table to compute 8 bits of the checksum at the same time for performance reasons. For reflected input, the table is reflected instead. Although more optimizations could be made for specific implementations with concrete parameters, the main goal was generality and customizability. Due to the lookup table however, it should be quite fast. As always - benchmark first, optimize only as needed.

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. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.
.NET Core	netcoreapp1.0 was computed. netcoreapp1.1 was computed. netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed.
.NET Standard	netstandard1.3 is compatible. netstandard1.4 was computed. netstandard1.5 was computed. netstandard1.6 was computed. netstandard2.0 was computed. netstandard2.1 was computed.
.NET Framework	net46 was computed. 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	tizen30 was computed. tizen40 was computed. tizen60 was computed.
Universal Windows Platform	uap was computed. uap10.0 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 1.3
- NETStandard.Library (>= 1.6.1)

NuGet packages (2)

Showing the top 2 NuGet packages that depend on CrcDotNET:

Package	Downloads
RFPPF RF-Networks Protocol Parser Framework	21.5K
OrbiPacket C# Implementation of the OrbiPacket protocol.	1.3K

GitHub repositories

This package is not used by any popular GitHub repositories.