package org.bouncycastle.asn1.pkcs;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;
public class Attribute
implements DEREncodable
{
private DERObjectIdentifier attrType;
private ASN1Set attrValues;
/**
* return an Attribute object from the given object.
*
* @param o the object we want converted.
* @exception IllegalArgumentException if the object cannot be converted.
*/
public static Attribute getInstance(
Object o)
{
if (o == null || o instanceof Attribute)
{
return (Attribute)o;
}
if (o instanceof ASN1Sequence)
{
return new Attribute((ASN1Sequence)o);
}
throw new IllegalArgumentException("unknown object in factory");
}
public Attribute(
ASN1Sequence seq)
{
attrType = (DERObjectIdentifier)seq.getObjectAt(0);
attrValues = (ASN1Set)seq.getObjectAt(1);
}
public Attribute(
DERObjectIdentifier attrType,
ASN1Set attrValues)
{
this.attrType = attrType;
this.attrValues = attrValues;
}
public DERObjectIdentifier getAttrType()
{
return attrType;
}
public ASN1Set getAttrValues()
{
return attrValues;
}
/**
* Produce an object suitable for an ASN1OutputStream.
* <pre>
* Attribute ::= SEQUENCE {
* attrType OBJECT IDENTIFIER,
* attrValues SET OF AttributeValue
* }
* </pre>
*/
public DERObject getDERObject()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(attrType);
v.add(attrValues);
return new DERSequence(v);
}
}