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using System;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Esf
{
public class SignerAttribute
: Asn1Encodable
{
private Asn1Sequence claimedAttributes;
private AttributeCertificate certifiedAttributes;
public static SignerAttribute GetInstance(
object obj)
{
if (obj == null || obj is SignerAttribute)
return (SignerAttribute) obj;
if (obj is Asn1Sequence)
return new SignerAttribute(obj);
throw new ArgumentException(
"Unknown object in 'SignerAttribute' factory: "
+ Platform.GetTypeName(obj),
"obj");
}
private SignerAttribute(
object obj)
{
Asn1Sequence seq = (Asn1Sequence) obj;
DerTaggedObject taggedObject = (DerTaggedObject) seq[0];
if (taggedObject.TagNo == 0)
{
claimedAttributes = Asn1Sequence.GetInstance(taggedObject, true);
}
else if (taggedObject.TagNo == 1)
{
certifiedAttributes = AttributeCertificate.GetInstance(taggedObject);
}
else
{
throw new ArgumentException("illegal tag.", "obj");
}
}
public SignerAttribute(
Asn1Sequence claimedAttributes)
{
this.claimedAttributes = claimedAttributes;
}
public SignerAttribute(
AttributeCertificate certifiedAttributes)
{
this.certifiedAttributes = certifiedAttributes;
}
public virtual Asn1Sequence ClaimedAttributes
{
get { return claimedAttributes; }
}
public virtual AttributeCertificate CertifiedAttributes
{
get { return certifiedAttributes; }
}
/**
*
* <pre>
* SignerAttribute ::= SEQUENCE OF CHOICE {
* claimedAttributes [0] ClaimedAttributes,
* certifiedAttributes [1] CertifiedAttributes }
*
* ClaimedAttributes ::= SEQUENCE OF Attribute
* CertifiedAttributes ::= AttributeCertificate -- as defined in RFC 3281: see clause 4.1.
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector();
if (claimedAttributes != null)
{
v.Add(new DerTaggedObject(0, claimedAttributes));
}
else
{
v.Add(new DerTaggedObject(1, certifiedAttributes));
}
return new DerSequence(v);
}
}
}
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