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path: root/crypto/src/asn1/esf/CertificateValues.cs
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using System;
using System.Collections.Generic;

using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Asn1.Esf
{
	/// <remarks>
	/// RFC 3126: 4.3.1 Certificate Values Attribute Definition
	/// <code>
	/// CertificateValues ::= SEQUENCE OF Certificate
	/// </code>
	/// </remarks>
	public class CertificateValues
		: Asn1Encodable
	{
		private readonly Asn1Sequence m_certificates;

		public static CertificateValues GetInstance(object obj)
		{
            if (obj == null)
                return null;
            if (obj is CertificateValues certificateValues)
                return certificateValues;
            return new CertificateValues(Asn1Sequence.GetInstance(obj));
		}

        public static CertificateValues GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
        {
            return GetInstance(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
        }

        private CertificateValues(Asn1Sequence seq)
		{
			if (seq == null)
				throw new ArgumentNullException(nameof(seq));

			// Validate
            seq.MapElements(element => X509CertificateStructure.GetInstance(element.ToAsn1Object()));

			m_certificates = seq;
		}

		public CertificateValues(params X509CertificateStructure[] certificates)
		{
			if (certificates == null)
				throw new ArgumentNullException(nameof(certificates));

			m_certificates = new DerSequence(certificates);
		}

		public CertificateValues(IEnumerable<X509CertificateStructure> certificates)
		{
			if (certificates == null)
                throw new ArgumentNullException(nameof(certificates));

            m_certificates = new DerSequence(Asn1EncodableVector.FromEnumerable(certificates));
		}

		public X509CertificateStructure[] GetCertificates()
		{
			return m_certificates.MapElements(element => X509CertificateStructure.GetInstance(element.ToAsn1Object()));
		}

		public override Asn1Object ToAsn1Object()
		{
			return m_certificates;
		}
 	}
}