Soenneker.Hashing.XxHash 11.0.129

Prefix Reserved
.NET 11.0 This package targets .NET 11.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Soenneker.Hashing.XxHash --version 11.0.129
                    


                    

                
NuGet\Install-Package Soenneker.Hashing.XxHash -Version 11.0.129
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="Soenneker.Hashing.XxHash" Version="11.0.129" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Soenneker.Hashing.XxHash" Version="11.0.129" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Soenneker.Hashing.XxHash" />
                    


                            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 Soenneker.Hashing.XxHash --version 11.0.129
                    


                    

                
#r "nuget: Soenneker.Hashing.XxHash, 11.0.129"
#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. 
#:package Soenneker.Hashing.XxHash@11.0.129
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Soenneker.Hashing.XxHash&version=11.0.129
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Soenneker.Hashing.XxHash&version=11.0.129
                    


                            Install as a Cake Tool

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Soenneker.Hashing.XxHash

Fast XXH3 64-bit hashing for byte spans and UTF-8 text, with integer and canonical 16-character lowercase hexadecimal outputs.

XXH3 is non-cryptographic. Use it for hash-table keys, cache keys, partition selection, deduplication hints, and accidental-corruption checks. Do not use it for passwords, signatures, authentication tokens, or adversarial integrity checks.

Installation

dotnet add package Soenneker.Hashing.XxHash

Hash UTF-8 text

using Soenneker.Hashing.XxHash;

string hex = XxHash3Util.Hash("customer:42");
// 16 lowercase hex characters

ulong numeric = XxHash3Util.HashToUInt64("customer:42");

String and character-span overloads encode text as UTF-8 before hashing, so the same Unicode text produces the same result across processes.

Hash bytes or use a seed

ReadOnlySpan<byte> payload = ...;

ulong standard = XxHash3Util.HashToUInt64(payload);
ulong partitioned = XxHash3Util.HashUtf8ToUInt64(payload, seed: 17);

A seed produces a different deterministic hash family; it is not a secret key and does not make XXH3 cryptographically secure.

Compare a stored text hash

string expected = XxHash3Util.Hash(value);
bool matches = XxHash3Util.Verify(value, expected);

Verify() accepts exactly 16 hexadecimal characters and returns false for malformed values or a mismatch. This comparison is a convenience check, not constant-time authentication.

Character inputs up to the internal threshold are UTF-8 encoded on the stack; larger inputs use a pooled byte array. Byte-span hashing itself does not allocate. Null string overload arguments throw ArgumentNullException; span overloads naturally support empty input.

Product Compatible and additional computed target framework versions.
.NET net11.0 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
11.0.135 0 11/11/2026
11.0.133 0 11/11/2026
11.0.132 53 11/11/2026
11.0.131 287 11/10/2026
11.0.130 81 11/10/2026
11.0.129 2,401 11/3/2026
11.0.128 714 11/3/2026
11.0.127 259 11/2/2026
11.0.126 3,034 10/26/2026
11.0.125 85 10/26/2026
11.0.124 393 10/26/2026
11.0.123 308 10/26/2026
4.0.122 1,418 10/25/2026
4.0.121 2,764 10/15/2026
4.0.120 113 10/15/2026
4.0.118 568 10/14/2026
4.0.115 1,124 10/14/2026
4.0.109 862 10/12/2026
4.0.107 916 10/12/2026
4.0.106 1,139 10/11/2026
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Updated Soenneker.Extensions.Spans.Readonly.Chars to 11.0.155