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using System;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Pkcs
{
public class AttributePkcs
: Asn1Encodable
{
private readonly DerObjectIdentifier attrType;
private readonly Asn1Set attrValues;
/**
* return an Attribute object from the given object.
*
* @param o the object we want converted.
* @exception ArgumentException if the object cannot be converted.
*/
public static AttributePkcs GetInstance(
object obj)
{
AttributePkcs attr = obj as AttributePkcs;
if (obj == null || attr != null)
{
return attr;
}
Asn1Sequence seq = obj as Asn1Sequence;
if (seq != null)
{
return new AttributePkcs(seq);
}
throw new ArgumentException("Unknown object in factory: " + Platform.GetTypeName(obj), "obj");
}
private AttributePkcs(
Asn1Sequence seq)
{
if (seq.Count != 2)
throw new ArgumentException("Wrong number of elements in sequence", "seq");
attrType = DerObjectIdentifier.GetInstance(seq[0]);
attrValues = Asn1Set.GetInstance(seq[1]);
}
public AttributePkcs(
DerObjectIdentifier attrType,
Asn1Set attrValues)
{
this.attrType = attrType;
this.attrValues = attrValues;
}
public DerObjectIdentifier AttrType
{
get { return attrType; }
}
public Asn1Set AttrValues
{
get { return attrValues; }
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* Attr ::= Sequence {
* attrType OBJECT IDENTIFIER,
* attrValues Set OF AttributeValue
* }
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
return new DerSequence(attrType, attrValues);
}
}
}
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