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Pkcs9SigningTime.cs
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Pkcs9SigningTime.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Diagnostics;
using System.Threading;
using Internal.Cryptography;
namespace System.Security.Cryptography.Pkcs
{
public sealed class Pkcs9SigningTime : Pkcs9AttributeObject
{
//
// Constructors.
//
public Pkcs9SigningTime()
: this(DateTime.Now)
{
}
public Pkcs9SigningTime(DateTime signingTime)
: base(Oids.SigningTimeOid.CopyOid(), Encode(signingTime))
{
_lazySigningTime = signingTime;
}
public Pkcs9SigningTime(byte[] encodedSigningTime)
: base(Oids.SigningTimeOid.CopyOid(), encodedSigningTime)
{
}
internal Pkcs9SigningTime(ReadOnlySpan<byte> encodedSigningTime)
: base(Oids.SigningTimeOid.CopyOid(), encodedSigningTime)
{
}
//
// Public properties.
//
public DateTime SigningTime
{
get
{
if (!_lazySigningTime.HasValue)
{
_lazySigningTime = Decode(RawData);
Interlocked.MemoryBarrier();
}
return _lazySigningTime.Value;
}
}
public override void CopyFrom(AsnEncodedData asnEncodedData)
{
base.CopyFrom(asnEncodedData);
_lazySigningTime = default(DateTime?);
}
//
// Private methods.
//
private static DateTime Decode(byte[]? rawData)
{
if (rawData == null)
return default(DateTime);
return PkcsHelpers.DecodeUtcTime(rawData);
}
private static byte[] Encode(DateTime signingTime)
{
return PkcsHelpers.EncodeUtcTime(signingTime);
}
private DateTime? _lazySigningTime;
}
}