NullFX.CRC 1.1.10

dotnet add package NullFX.CRC --version 1.1.10
NuGet\Install-Package NullFX.CRC -Version 1.1.10
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="NullFX.CRC" Version="1.1.10" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add NullFX.CRC --version 1.1.10
#r "nuget: NullFX.CRC, 1.1.10"
#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 NullFX.CRC as a Cake Addin
#addin nuget:?package=NullFX.CRC&version=1.1.10

// Install NullFX.CRC as a Cake Tool
#tool nuget:?package=NullFX.CRC&version=1.1.10

NullFX CRC build Quality Gate Status

NullFX CRC is a small set of CRC utilities written in native C# released under the MIT License


GitHub Package Page Package Page


dotnet add PROJECT package NullFX.CRC --version 1.1.10


Each CRC library uses a common ComputeChecksum format. It accepts a byte array which can be obtained by converting text / numbers / structures etc into an array, then passing the byte array into ComputeChecksum for it's CRC.

The ComputeChecksum method also has a params argument parameter allowing individual bytes to be passed into the method one at a time rather than as an array.

If a checksum needs to be performed on a segment of an array, rather than creating a copy of the array to perform the CRC on, you can pass in the entire buffer and specify the section of the array in which to perform the CRC calculation, saving time and memory:

// using text
var text = "I am string content";
// convert text to a byte array
var textBuffer = System.Text.Encoding.UTF8.GetBytes ( text );

// get the CRC for the text
var textCrc = NullFX.CRC.Crc32.ComputeChecksum ( textBuffer );
Console.WriteLine ( "Text CRC: {0:X8}", textCrc );

// use a large number
var aNumber = 0xDEADBEEF;
// convert that to a byte array
var numberBuffer = System.BitConverter.GetBytes ( aNumber );

// get the CRC for the number
var numberCrc = NullFX.CRC.Crc32.ComputeChecksum ( numberBuffer );
Console.WriteLine ( "Number CRC: {0:X8}", numberCrc );

// bytes as params
var randomCrc = NullFX.CRC.Crc32.ComputeChecksum ( 0x01, 0x02, 0x03, 0x04 );
Console.WriteLine ( "Random bytes CRC: {0:X8}", randomCrc );

/// checksum of a subset of an array. perform the CRC on bytes at indices
// 2, 3, 4 and 5
var bytes = new byte[] { 0xFE, 0x2C, 0xED, 0x4B, 0x88, 0x31, 0x07, 0xBE };
var segmentedBytesCrc = Crc32.ComputeChecksum ( bytes, 2, 4 );
Console.WriteLine ( "Segment of bytes CRC: {0:X8}", segmentedBytesCrc );


Text CRC: 3AD00FD2
Number CRC: 1A5A601F
Random bytes CRC: B63CFBCD
Segment of bytes CRC: DB1A36A1

API Information

Crc8, and Crc32's ComputeChecksum have 2 different signatures

ComputeChecksum(byte[] bytes)


ComputeChecksum(byte[] bytes, int start, int length )

Crc16 has one additional initial parameter ( Crc16Algorithm ) where Crc16Algorithm is one of the following:

  • Standard CRC 16
  • CRC 16 CCITT with initial values of 0, FFFF and 1D0F
    • CRC 16 CCITT Kermit
  • Modbus

ComputeChecksum ( Crc16Algorithm algorithm, byte[] bytes )


ComputeChecksum ( Crc16Algorithm algorithm, byte[] bytes, int start, int length )


Note: this repository is also mirrored on GitLab

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  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 is compatible.  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 is compatible. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net40 is compatible.  net403 was computed.  net45 is compatible.  net451 was computed.  net452 was computed.  net46 is compatible.  net461 was computed.  net462 was computed.  net463 was computed.  net47 is compatible.  net471 was computed.  net472 was computed.  net48 is compatible.  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.
  • .NETCoreApp 3.1

    • No dependencies.
  • .NETFramework 4.0

    • No dependencies.
  • .NETFramework 4.5

    • No dependencies.
  • .NETFramework 4.6

    • No dependencies.
  • .NETFramework 4.7

    • No dependencies.
  • .NETFramework 4.8

    • No dependencies.
  • .NETStandard 2.0

    • No dependencies.
  • net6.0

    • No dependencies.
  • net7.0

    • No dependencies.

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Version Downloads Last updated
1.1.10 38,532 10/9/2023
1.1.9 115 10/9/2023
1.1.8 19,686 7/7/2023
1.1.7 10,663 3/22/2023
1.1.6 7,262 2/8/2023
1.1.5 6,969 7/12/2022
1.1.4 4,860 4/30/2022
1.1.3 392,078 11/4/2021
1.1.2 4,568 5/7/2021
1.1.1 5,351 9/17/2020
1.0.1 45,947 2/23/2018
1.0.0 1,533 11/3/2017