SignerInfo.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » Cms » C# / CSharp Open Source

Home
C# / CSharp Open Source
1.2.6.4 mono .net core
2.2.6.4 mono core
3.Aspect Oriented Frameworks
4.Bloggers
5.Build Systems
6.Business Application
7.Charting Reporting Tools
8.Chat Servers
9.Code Coverage Tools
10.Content Management Systems CMS
11.CRM ERP
12.Database
13.Development
14.Email
15.Forum
16.Game
17.GIS
18.GUI
19.IDEs
20.Installers Generators
21.Inversion of Control Dependency Injection
22.Issue Tracking
23.Logging Tools
24.Message
25.Mobile
26.Network Clients
27.Network Servers
28.Office
29.PDF
30.Persistence Frameworks
31.Portals
32.Profilers
33.Project Management
34.RSS RDF
35.Rule Engines
36.Script
37.Search Engines
38.Sound Audio
39.Source Control
40.SQL Clients
41.Template Engines
42.Testing
43.UML
44.Web Frameworks
45.Web Service
46.Web Testing
47.Wiki Engines
48.Windows Presentation Foundation
49.Workflows
50.XML Parsers
C# / C Sharp
C# / C Sharp by API
C# / CSharp Tutorial
C# / CSharp Open Source » PDF » iTextSharp 
iTextSharp » Org » BouncyCastle » Asn1 » Cms » SignerInfo.cs
using System;
using System.Collections;

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

namespace Org.BouncyCastle.Asn1.Cms{
    public class SignerInfo
        : Asn1Encodable
    {
        private DerInteger              version;
        private SignerIdentifier        sid;
        private AlgorithmIdentifier     digAlgorithm;
        private Asn1Set                 authenticatedAttributes;
        private AlgorithmIdentifier     digEncryptionAlgorithm;
        private Asn1OctetString         encryptedDigest;
        private Asn1Set                 unauthenticatedAttributes;

        public static SignerInfo GetInstance(
            object obj)
        {
            if (obj == null || obj is SignerInfo)
            {
                return (SignerInfo) obj;
            }

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

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

    public SignerInfo(
            SignerIdentifier        sid,
            AlgorithmIdentifier     digAlgorithm,
            Asn1Set                 authenticatedAttributes,
            AlgorithmIdentifier     digEncryptionAlgorithm,
            Asn1OctetString         encryptedDigest,
            Asn1Set                 unauthenticatedAttributes)
        {
            if (sid.IsTagged)
            {
                this.version = new DerInteger(3);
            }
            else
            {
                this.version = new DerInteger(1);
            }

      this.sid = sid;
            this.digAlgorithm = digAlgorithm;
            this.authenticatedAttributes = authenticatedAttributes;
            this.digEncryptionAlgorithm = digEncryptionAlgorithm;
            this.encryptedDigest = encryptedDigest;
            this.unauthenticatedAttributes = unauthenticatedAttributes;
        }

    public SignerInfo(
            Asn1Sequence seq)
        {
            IEnumerator e = seq.GetEnumerator();

            e.MoveNext();
            version = (DerInteger) e.Current;

      e.MoveNext();
            sid = SignerIdentifier.GetInstance(e.Current);

      e.MoveNext();
            digAlgorithm = AlgorithmIdentifier.GetInstance(e.Current);

      e.MoveNext();
            object obj = e.Current;

      if (obj is Asn1TaggedObject)
            {
                authenticatedAttributes = Asn1Set.GetInstance((Asn1TaggedObject) obj, false);

        e.MoveNext();
                digEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(e.Current);
            }
            else
            {
                authenticatedAttributes = null;
                digEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(obj);
            }

      e.MoveNext();
            encryptedDigest = DerOctetString.GetInstance(e.Current);

      if (e.MoveNext())
            {
                unauthenticatedAttributes = Asn1Set.GetInstance((Asn1TaggedObject) e.Current, false);
            }
            else
            {
                unauthenticatedAttributes = null;
            }
        }

    public DerInteger Version { get { return version; } }

    public SignerIdentifier SignerID { get { return sid; } }

    public Asn1Set AuthenticatedAttributes { get { return authenticatedAttributes; } }

    public AlgorithmIdentifier DigestAlgorithm { get { return digAlgorithm; } }

    public Asn1OctetString EncryptedDigest { get { return encryptedDigest; } }

    public AlgorithmIdentifier DigestEncryptionAlgorithm { get { return digEncryptionAlgorithm; } }

    public Asn1Set UnauthenticatedAttributes { get { return unauthenticatedAttributes; } }

    /**
         * Produce an object suitable for an Asn1OutputStream.
         * <pre>
         *  SignerInfo ::= Sequence {
         *      version Version,
         *      SignerIdentifier sid,
         *      digestAlgorithm DigestAlgorithmIdentifier,
         *      authenticatedAttributes [0] IMPLICIT Attributes OPTIONAL,
         *      digestEncryptionAlgorithm DigestEncryptionAlgorithmIdentifier,
         *      encryptedDigest EncryptedDigest,
         *      unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL
         *  }
         *
         *  EncryptedDigest ::= OCTET STRING
         *
         *  DigestAlgorithmIdentifier ::= AlgorithmIdentifier
         *
         *  DigestEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
         * </pre>
         */
        public override Asn1Object ToAsn1Object()
        {
            Asn1EncodableVector v = new Asn1EncodableVector(
        version, sid, digAlgorithm);

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

      v.Add(digEncryptionAlgorithm, encryptedDigest);

      if (unauthenticatedAttributes != null)
            {
                v.Add(new DerTaggedObject(false, 1, unauthenticatedAttributes));
            }

      return new DerSequence(v);
        }
    }
}
www.java2v.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.