/*
 * Copyright (c) 2023 Proton AG
 *
 * This file is part of ProtonVPN.
 *
 * ProtonVPN is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ProtonVPN is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ProtonVPN.  If not, see <https://www.gnu.org/licenses/>.
 */

using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using ProtonVPN.Api.Extensions;

namespace ProtonVPN.Api.Handlers.TlsPinning;

public class PublicKeyInfoHash
{
    private readonly X509Certificate _certificate;

    public PublicKeyInfoHash(X509Certificate certificate)
    {
        _certificate = certificate;
    }

    public string Value()
    {
        byte[] digest = SHA256.HashData(_certificate.GetSubjectPublicKeyInfo());

        return Convert.ToBase64String(digest);
    }
}