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using System;
namespace Org.BouncyCastle.Asn1.Cms
{
public class Attribute
: Asn1Encodable
{
public static Attribute GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is Attribute attribute)
return attribute;
#pragma warning disable CS0618 // Type or member is obsolete
return new Attribute(Asn1Sequence.GetInstance(obj));
#pragma warning restore CS0618 // Type or member is obsolete
}
public static Attribute GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
#pragma warning disable CS0618 // Type or member is obsolete
return new Attribute(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
#pragma warning restore CS0618 // Type or member is obsolete
}
private readonly DerObjectIdentifier m_attrType;
private readonly Asn1Set m_attrValues;
[Obsolete("Use 'GetInstance' instead")]
public Attribute(Asn1Sequence seq)
{
int count = seq.Count;
if (count != 2)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_attrType = DerObjectIdentifier.GetInstance(seq[0]);
m_attrValues = Asn1Set.GetInstance(seq[1]);
}
public Attribute(DerObjectIdentifier attrType, Asn1Set attrValues)
{
m_attrType = attrType ?? throw new ArgumentNullException(nameof(attrType));
m_attrValues = attrValues ?? throw new ArgumentNullException(nameof(attrValues));
}
public DerObjectIdentifier AttrType => m_attrType;
public Asn1Set AttrValues => m_attrValues;
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* Attribute ::= SEQUENCE {
* attrType OBJECT IDENTIFIER,
* attrValues SET OF AttributeValue
* }
* </pre>
*/
public override Asn1Object ToAsn1Object() => new DerSequence(m_attrType, m_attrValues);
}
}
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