Class FowlerNollVo128
Provides an implementation of the FVN (Fowler–Noll–Vo) non-cryptographic hashing algorithm for 128-bit hash values. This class cannot be inherited. Implements the FowlerNollVoHash
public sealed class FowlerNollVo128 : FowlerNollVoHash, IHash, IConfigurable<FowlerNollVoOptions>- Inheritance
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FowlerNollVo128
- Implements
- Inherited Members
Examples
The following example demonstrates how to compute 128-bit FNV-1a and FNV-1 hash values using FowlerNollVo128, with configurable algorithm variant and byte order.
using System;
using System.Text;
using Cuemon;
using Cuemon.Security;
namespace MyApp.Examples
{
public class FowlerNollVo128Example
{
public void Demonstrate()
{
// Create a FNV-1a 128-bit hash (default algorithm).
var fnv = new FowlerNollVo128();
Console.WriteLine($"Bits: {fnv.Bits}"); // 128
Console.WriteLine($"Algorithm: {fnv.Options.Algorithm}"); // Fnv1a
// Compute hash of a UTF-8 encoded string.
var data = Encoding.UTF8.GetBytes("Hello, World!");
var hash = fnv.ComputeHash(data);
Console.WriteLine($"Hash (hex): {hash.ToHexadecimalString()}");
Console.WriteLine($"Hash (b64): {hash.ToBase64String()}");
// Use FNV-1 instead of FNV-1a.
var fnv1 = new FowlerNollVo128(o => o.Algorithm = FowlerNollVoAlgorithm.Fnv1);
var hashFnv1 = fnv1.ComputeHash(data);
Console.WriteLine($"FNV-1 hash: {hashFnv1}");
// Little-endian byte order.
var fnvLe = new FowlerNollVo128(o => o.ByteOrder = Endianness.LittleEndian);
var hashLe = fnvLe.ComputeHash(data);
Console.WriteLine($"LE hash: {hashLe.ToHexadecimalString()}");
// Verify hash with the built-in offset basis for empty input.
var emptyHash = fnv.ComputeHash(Array.Empty<byte>());
Console.WriteLine($"Offset basis hash: {emptyHash.ToHexadecimalString()}");
}}
}
Constructors
FowlerNollVo128(Action<FowlerNollVoOptions>)
Initializes a new instance of the FowlerNollVo128 class.
public FowlerNollVo128(Action<FowlerNollVoOptions> setup = null)Parameters
setupAction<FowlerNollVoOptions>The FowlerNollVoOptions which may be configured.