using System; namespace Org.BouncyCastle.Asn1.Cms { public class Attribute : Asn1Encodable { private readonly DerObjectIdentifier m_attrType; private readonly Asn1Set m_attrValues; public DerObjectIdentifier AttrType => m_attrType; public Asn1Set AttrValues => m_attrValues; public static Attribute GetInstance(object obj) { if (obj == null) return null; Attribute attribute = obj as Attribute; if (attribute != null) return attribute; return new Attribute(Asn1Sequence.GetInstance(obj)); } public static Attribute GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new Attribute(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); } public static Attribute GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new Attribute(Asn1Sequence.GetTagged(taggedObject, declaredExplicit)); } [Obsolete("Use 'GetInstance' instead")] public Attribute(Asn1Sequence seq) { int count = seq.Count; if (count != 2) throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq"); m_attrType = DerObjectIdentifier.GetInstance(seq[0]); m_attrValues = Asn1Set.GetInstance(seq[1]); } public Attribute(DerObjectIdentifier attrType, Asn1Set attrValues) { if (attrType == null) throw new ArgumentNullException("attrType"); m_attrType = attrType; if (attrValues == null) throw new ArgumentNullException("attrValues"); m_attrValues = attrValues; } public override Asn1Object ToAsn1Object() { return new DerSequence(m_attrType, m_attrValues); } } }