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) { return Asn1Utilities.GetInstanceChoice(obj, GetOptional); } public static SignaturePolicyIdentifier GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return Asn1Utilities.GetInstanceChoice(taggedObject, declaredExplicit, GetInstance); } public static SignaturePolicyIdentifier GetOptional(Asn1Encodable element) { if (element == null) throw new ArgumentNullException("element"); SignaturePolicyIdentifier signaturePolicyIdentifier = element as SignaturePolicyIdentifier; if (signaturePolicyIdentifier != null) return signaturePolicyIdentifier; SignaturePolicyId optional = SignaturePolicyId.GetOptional(element); if (optional != null) return new SignaturePolicyIdentifier(optional); if (Asn1Null.GetOptional(element) != null) return new SignaturePolicyIdentifier(); return null; } public static SignaturePolicyIdentifier GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) { return Asn1Utilities.GetTaggedChoice(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; } } }