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 * Copyright (c) 2005-2020 The OPC Foundation, Inc. All rights reserved.
 *
 * OPC Foundation MIT License 1.00
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
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 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
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 * ======================================================================*/

using System.Security.Cryptography;

namespace Opc.Ua.Security.Certificates
{
    /// <summary>
    /// The defaults used in the library for Certificates.
    /// </summary>
    public static class X509Defaults 
    {
        /// <summary>
        /// The default key size for RSA certificates in bits.
        /// </summary>
        /// <remarks>
        /// Supported values are 1024(deprecated), 2048, 3072 or 4096.
        /// </remarks>
        public static readonly ushort RSAKeySize = 2048;
        /// <summary>
        /// The min supported size for a RSA key.
        /// </summary>
        public static readonly ushort RSAKeySizeMin = 1024;
        /// <summary>
        /// The max supported size for a RSA key.
        /// </summary>
        public static readonly ushort RSAKeySizeMax = 4096;
        /// <summary>
        /// The default hash algorithm to use for signatures.
        /// </summary>
        /// <remarks>
        /// Supported values are SHA-1(deprecated) or 256, 384 and 512 for SHA-2.
        /// </remarks>
        public static readonly HashAlgorithmName HashAlgorithmName = HashAlgorithmName.SHA256;
        /// <summary>
        /// The default lifetime of certificates in months.
        /// </summary>
        public static readonly ushort LifeTime = 24;
        /// <summary>
        /// The recommended min serial numbers length in octets.
        /// </summary>
        public static readonly int SerialNumberLengthMin = 10;
        /// <summary>
        /// The max serial numbers length in octets.
        /// </summary>
        public static readonly int SerialNumberLengthMax = 20;
    }
}
