lthash 1.0.0
dotnet add package lthash --version 1.0.0
NuGet\Install-Package lthash -Version 1.0.0
<PackageReference Include="lthash" Version="1.0.0" />
paket add lthash --version 1.0.0
#r "nuget: lthash, 1.0.0"
// Install lthash as a Cake Addin #addin nuget:?package=lthash&version=1.0.0 // Install lthash as a Cake Tool #tool nuget:?package=lthash&version=1.0.0
lthash
A C# implementation of LtHASH (Lattice Hash), a homomorphic hashing algorithm based on lattice cryptography introduced by Mihir Bellare and Daniele Micciancio in this paper. This is a simplified C# porting of the Facebook Folly C++ Library implementation of the algorithm introduced here.
Homomorphic Hashing
A homomorphic hash can simplistically be defined as a hash function such that one can compute the hash of a composite block from the hashes of the individual blocks or rather being f1 and f2 two hash functions and op1, op2 two operations it is true that:
f1(a op1 b) = f2(a) op2 f2(b)
One of the main building blocks of a homomorphic hashing function is therefore an underlying hash function (our f2). This project depends on this C# implementation of the BLAKE3 cryptographic hash function.
Example
var ltHash = new Lthash32();
// Create an initial checksum of two inputs
ltHash.Add(System.Text.Encoding.UTF8.GetBytes("apple"), System.Text.Encoding.UTF8.GetBytes("orange"));
var checksum = ltHash.GetChecksum();
// Remove the hash of "apple" from the checksum and check
// if the two checksums are equals
ltHash.Remove(System.Text.Encoding.UTF8.GetBytes("apple"));
var isEqual = ltHash.ChecksumEquals(checksum);
// Update the hash of "orange" with the new value "apple"
// and check if the two checksums are equals
ltHash.Update(System.Text.Encoding.UTF8.GetBytes("orange"), System.Text.Encoding.UTF8.GetBytes("apple"));
isEqual = ltHash.ChecksumEquals(checksum);
// Adding again the missing "orange" and check if the
// checksum is equal to the initial checksum
ltHash.Add(System.Text.Encoding.UTF8.GetBytes("orange"));
isEqual = ltHash.ChecksumEquals(checksum);
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 is compatible. 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. |
-
net5.0
- Blake3 (>= 0.3.0)
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 |
---|---|---|
1.0.0 | 347 | 6/8/2021 |