Soenneker.Hashing.XxHash 4.0.91

Prefix Reserved
.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package Soenneker.Hashing.XxHash --version 4.0.91
                    


                    

                
NuGet\Install-Package Soenneker.Hashing.XxHash -Version 4.0.91
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="4.0.91" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Soenneker.Hashing.XxHash" Version="4.0.91" />
                    


                            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 4.0.91
                    


                    

                
#r "nuget: Soenneker.Hashing.XxHash, 4.0.91"
#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@4.0.91
#: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=4.0.91
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Soenneker.Hashing.XxHash&version=4.0.91
                    


                            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 net10.0 is compatible.  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. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (13)

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Soenneker.HubSpot.Client

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Soenneker.Zoho.HttpClients

Provides cached HTTP clients for Zoho CRM access tokens and data-center API origins.
Soenneker.N8n.HttpClients

Provides cached, authenticated HTTP clients for one or more n8n servers.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
4.0.91 0 9/8/2026
4.0.90 295 9/7/2026
4.0.89 197 9/7/2026
4.0.88 292 9/7/2026
4.0.87 965 9/5/2026
4.0.86 1,088 9/4/2026
4.0.85 2,375 8/31/2026
4.0.84 542 8/31/2026
4.0.83 436 8/31/2026
4.0.82 359 8/30/2026
4.0.81 601 8/30/2026
4.0.80 1,299 8/29/2026
4.0.79 91 8/29/2026
4.0.78 3,358 8/21/2026
4.0.77 1,924 8/18/2026
4.0.75 348 8/18/2026
4.0.74 1,258 8/12/2026
4.0.73 3,659 8/7/2026
4.0.72 1,826 7/29/2026
4.0.71 1,239 7/29/2026
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Updated System.IO.Hashing to 10.0.12