CertificationRequestInfo.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » Pkcs » C# / CSharp Open Source

using System;

using Org.BouncyCastle.Asn1.X509;

namespace Org.BouncyCastle.Asn1.Pkcs{
    /**
     * Pkcs10 CertificationRequestInfo object.
     * <pre>
     *  CertificationRequestInfo ::= Sequence {
     *   version             Integer { v1(0) } (v1,...),
     *   subject             Name,
     *   subjectPKInfo   SubjectPublicKeyInfo{{ PKInfoAlgorithms }},
     *   attributes          [0] Attributes{{ CRIAttributes }}
     *  }
     *
     *  Attributes { ATTRIBUTE:IOSet } ::= Set OF Attr{{ IOSet }}
     *
     *  Attr { ATTRIBUTE:IOSet } ::= Sequence {
     *    type    ATTRIBUTE.&amp;id({IOSet}),
     *    values  Set SIZE(1..MAX) OF ATTRIBUTE.&amp;Type({IOSet}{\@type})
     *  }
     * </pre>
     */
    public class CertificationRequestInfo
        : Asn1Encodable
    {
        internal DerInteger        version = new DerInteger(0);
        internal X509Name        subject;
        internal SubjectPublicKeyInfo  subjectPKInfo;
        internal Asn1Set        attributes;

    public static CertificationRequestInfo GetInstance(
            object  obj)
        {
            if (obj is CertificationRequestInfo)
            {
                return (CertificationRequestInfo) obj;
            }

      if (obj is Asn1Sequence)
            {
                return new CertificationRequestInfo((Asn1Sequence) obj);
            }

      throw new ArgumentException("Unknown object in factory: " + obj.GetType().FullName, "obj");
    }

    public CertificationRequestInfo(
            X509Name        subject,
            SubjectPublicKeyInfo  pkInfo,
            Asn1Set          attributes)
        {
            this.subject = subject;
            this.subjectPKInfo = pkInfo;
            this.attributes = attributes;

      if (subject == null || version == null || subjectPKInfo == null)
            {
                throw new ArgumentException(
          "Not all mandatory fields set in CertificationRequestInfo generator.");
            }
        }

    private CertificationRequestInfo(
            Asn1Sequence seq)
        {
            version = (DerInteger) seq[0];

      subject = X509Name.GetInstance(seq[1]);
            subjectPKInfo = SubjectPublicKeyInfo.GetInstance(seq[2]);

      //
            // some CertificationRequestInfo objects seem to treat this field
            // as optional.
            //
            if (seq.Count > 3)
            {
                DerTaggedObject tagobj = (DerTaggedObject) seq[3];
                attributes = Asn1Set.GetInstance(tagobj, false);
            }

      if (subject == null || version == null || subjectPKInfo == null)
            {
                throw new ArgumentException(
          "Not all mandatory fields set in CertificationRequestInfo generator.");
            }
        }

    public DerInteger Version
    {
      get { return version; }
    }

    public X509Name Subject
    {
      get { return subject; }
    }

    public SubjectPublicKeyInfo SubjectPublicKeyInfo
    {
      get { return subjectPKInfo; }
    }

    public Asn1Set Attributes
    {
      get { return attributes; }
    }

    public override Asn1Object ToAsn1Object()
        {
            Asn1EncodableVector v = new Asn1EncodableVector(
        version, subject, subjectPKInfo);

      if (attributes != null)
            {
                v.Add(new DerTaggedObject(false, 0, attributes));
            }

      return new DerSequence(v);
        }
    }
}