CryptographicOperations.cs

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using System.Runtime.CompilerServices;
 
namespace System.Security.Cryptography;
 
public static class CryptographicOperations
{
    [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.NoOptimization)]
    public static bool FixedTimeEquals(ReadOnlySpan<byte> left, ReadOnlySpan<byte> right)
    {
        if (left.Length != right.Length)
        {
            return false;
        }
        int length = left.Length;
        int num = 0;
        for (int i = 0; i < length; i++)
        {
            num |= left[i] - right[i];
        }
        return num == 0;
    }
 
    [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.NoOptimization)]
    public static void ZeroMemory(Span<byte> buffer)
    {
        buffer.Clear();
    }
}