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Switch-Toolbox/Switch_Toolbox_Library/HashCalculate/FNV64A1.cs
2019-11-24 20:47:41 -05:00

32 lines
839 B
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Toolbox.Library
{
public class FNV64A1
{
public static ulong Calculate(string text) {
return Calculate(Encoding.Default.GetBytes(text));
}
//https://github.com/kwsch/pkNX/blob/e8cd9cc30feb0a6f6e8cc1f6f6e04288aef0a8cb/pkNX.Containers/Misc/FnvHash.cs
public static ulong Calculate(byte[] bytes)
{
const ulong fnv64Offset = 0xCBF29CE484222645;
const ulong fnv64Prime = 0x00000100000001b3;
ulong hash = fnv64Offset;
for (var i = 0; i < bytes.Length; i++)
{
hash = hash ^ bytes[i];
hash *= fnv64Prime;
}
return hash;
}
}
}