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using System;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Cms
{
public class RecipientKeyIdentifier
: Asn1Encodable
{
public static RecipientKeyIdentifier GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is RecipientKeyIdentifier recipientKeyIdentifier)
return recipientKeyIdentifier;
#pragma warning disable CS0618 // Type or member is obsolete
return new RecipientKeyIdentifier(Asn1Sequence.GetInstance(obj));
#pragma warning restore CS0618 // Type or member is obsolete
}
public static RecipientKeyIdentifier GetInstance(Asn1TaggedObject ato, bool explicitly)
{
#pragma warning disable CS0618 // Type or member is obsolete
return new RecipientKeyIdentifier(Asn1Sequence.GetInstance(ato, explicitly));
#pragma warning restore CS0618 // Type or member is obsolete
}
private readonly Asn1OctetString m_subjectKeyIdentifier;
private readonly Asn1GeneralizedTime m_date;
private readonly OtherKeyAttribute m_other;
public RecipientKeyIdentifier(Asn1OctetString subjectKeyIdentifier, Asn1GeneralizedTime date,
OtherKeyAttribute other)
{
m_subjectKeyIdentifier = subjectKeyIdentifier ?? throw new ArgumentNullException(nameof(subjectKeyIdentifier));
m_date = date;
m_other = other;
}
public RecipientKeyIdentifier(byte[] subjectKeyIdentifier)
: this(subjectKeyIdentifier, null, null)
{
}
public RecipientKeyIdentifier(byte[] subjectKeyIdentifier, Asn1GeneralizedTime date, OtherKeyAttribute other)
{
m_subjectKeyIdentifier = new DerOctetString(subjectKeyIdentifier);
m_date = date;
m_other = other;
}
[Obsolete("Use 'GetInstance' instead")]
public RecipientKeyIdentifier(Asn1Sequence seq)
{
int count = seq.Count, pos = 0;
if (count < 1 || count > 3)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_subjectKeyIdentifier = Asn1OctetString.GetInstance(seq[pos++]);
m_date = Asn1Utilities.ReadOptional(seq, ref pos, Asn1GeneralizedTime.GetOptional);
m_other = Asn1Utilities.ReadOptional(seq, ref pos, OtherKeyAttribute.GetOptional);
if (pos != count)
throw new ArgumentException("Unexpected elements in sequence", nameof(seq));
}
public Asn1OctetString SubjectKeyIdentifier => m_subjectKeyIdentifier;
public Asn1GeneralizedTime Date => m_date;
public OtherKeyAttribute OtherKeyAttribute => m_other;
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* RecipientKeyIdentifier ::= Sequence {
* subjectKeyIdentifier SubjectKeyIdentifier,
* date GeneralizedTime OPTIONAL,
* other OtherKeyAttribute OPTIONAL
* }
*
* SubjectKeyIdentifier ::= OCTET STRING
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(3);
v.Add(m_subjectKeyIdentifier);
v.AddOptional(m_date, m_other);
return new DerSequence(v);
}
}
}
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