SafeAlgorithmHandle.cs

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using System;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
 
namespace Internal.NativeCrypto;
 
internal sealed class SafeAlgorithmHandle : Microsoft.Win32.SafeHandles.SafeBCryptHandle
{
    protected sealed override bool ReleaseHandle()
    {
        uint num = BCryptCloseAlgorithmProvider(handle, 0);
        return num == 0;
    }
 
    [DllImport("BCrypt.dll")]
    private static extern uint BCryptCloseAlgorithmProvider(IntPtr hAlgorithm, int dwFlags);
}