using System; namespace Org.BouncyCastle.Asn1.Esf { public class SignaturePolicyIdentifier : Asn1Encodable, IAsn1Choice { private readonly SignaturePolicyId m_sigPolicy; public SignaturePolicyId SignaturePolicyId => m_sigPolicy; public static SignaturePolicyIdentifier GetInstance(object obj) { if (obj == null) return null; SignaturePolicyIdentifier signaturePolicyIdentifier = obj as SignaturePolicyIdentifier; if (signaturePolicyIdentifier != null) return signaturePolicyIdentifier; if (obj is Asn1Null) return new SignaturePolicyIdentifier(); return new SignaturePolicyIdentifier(SignaturePolicyId.GetInstance(obj)); } public static SignaturePolicyIdentifier GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return Asn1Utilities.GetInstanceFromChoice(taggedObject, declaredExplicit, GetInstance); } public SignaturePolicyIdentifier() { m_sigPolicy = null; } public SignaturePolicyIdentifier(SignaturePolicyId signaturePolicyId) { if (signaturePolicyId == null) throw new ArgumentNullException("signaturePolicyId"); m_sigPolicy = signaturePolicyId; } public override Asn1Object ToAsn1Object() { return m_sigPolicy?.ToAsn1Object() ?? DerNull.Instance; } } }