Initial Commit

iTechSharp/srcbc/asn1/x509/TBSCertificateStructure.cs

@@ -0,0 +1,189 @@
+using System;
+
+using Org.BouncyCastle.Asn1.Pkcs;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+    /**
+     * The TbsCertificate object.
+     * <pre>
+     * TbsCertificate ::= Sequence {
+     *      version          [ 0 ]  Version DEFAULT v1(0),
+     *      serialNumber            CertificateSerialNumber,
+     *      signature               AlgorithmIdentifier,
+     *      issuer                  Name,
+     *      validity                Validity,
+     *      subject                 Name,
+     *      subjectPublicKeyInfo    SubjectPublicKeyInfo,
+     *      issuerUniqueID    [ 1 ] IMPLICIT UniqueIdentifier OPTIONAL,
+     *      subjectUniqueID   [ 2 ] IMPLICIT UniqueIdentifier OPTIONAL,
+     *      extensions        [ 3 ] Extensions OPTIONAL
+     *      }
+     * </pre>
+     * <p>
+     * Note: issuerUniqueID and subjectUniqueID are both deprecated by the IETF. This class
+     * will parse them, but you really shouldn't be creating new ones.</p>
+     */
+	public class TbsCertificateStructure
+		: Asn1Encodable
+	{
+		internal Asn1Sequence            seq;
+		internal DerInteger              version;
+		internal DerInteger              serialNumber;
+		internal AlgorithmIdentifier     signature;
+		internal X509Name                issuer;
+		internal Time                    startDate, endDate;
+		internal X509Name                subject;
+		internal SubjectPublicKeyInfo    subjectPublicKeyInfo;
+		internal DerBitString            issuerUniqueID;
+		internal DerBitString            subjectUniqueID;
+		internal X509Extensions          extensions;
+
+		public static TbsCertificateStructure GetInstance(
+			Asn1TaggedObject	obj,
+			bool				explicitly)
+		{
+			return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+		}
+
+		public static TbsCertificateStructure GetInstance(
+			object obj)
+		{
+			if (obj is TbsCertificateStructure)
+			{
+				return (TbsCertificateStructure) obj;
+			}
+
+			if (obj is Asn1Sequence)
+			{
+				return new TbsCertificateStructure((Asn1Sequence) obj);
+			}
+
+			throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+		}
+
+		internal TbsCertificateStructure(
+			Asn1Sequence seq)
+		{
+			int seqStart = 0;
+
+			this.seq = seq;
+
+			//
+			// some certficates don't include a version number - we assume v1
+			//
+			if (seq[0] is DerTaggedObject)
+			{
+				version = DerInteger.GetInstance(seq[0]);
+			}
+			else
+			{
+				seqStart = -1;          // field 0 is missing!
+				version = new DerInteger(0);
+			}
+
+			serialNumber = DerInteger.GetInstance(seq[seqStart + 1]);
+
+			signature = AlgorithmIdentifier.GetInstance(seq[seqStart + 2]);
+			issuer = X509Name.GetInstance(seq[seqStart + 3]);
+
+			//
+			// before and after dates
+			//
+			Asn1Sequence  dates = (Asn1Sequence)seq[seqStart + 4];
+
+			startDate = Time.GetInstance(dates[0]);
+			endDate = Time.GetInstance(dates[1]);
+
+			subject = X509Name.GetInstance(seq[seqStart + 5]);
+
+			//
+			// public key info.
+			//
+			subjectPublicKeyInfo = SubjectPublicKeyInfo.GetInstance(seq[seqStart + 6]);
+
+			for (int extras = seq.Count - (seqStart + 6) - 1; extras > 0; extras--)
+			{
+				DerTaggedObject extra = (DerTaggedObject) seq[seqStart + 6 + extras];
+
+				switch (extra.TagNo)
+				{
+					case 1:
+						issuerUniqueID = DerBitString.GetInstance(extra, false);
+						break;
+					case 2:
+						subjectUniqueID = DerBitString.GetInstance(extra, false);
+						break;
+					case 3:
+						extensions = X509Extensions.GetInstance(extra);
+						break;
+				}
+			}
+		}
+
+		public int Version
+		{
+			get { return version.Value.IntValue + 1; }
+		}
+
+		public DerInteger VersionNumber
+		{
+			get { return version; }
+		}
+
+		public DerInteger SerialNumber
+		{
+			get { return serialNumber; }
+		}
+
+		public AlgorithmIdentifier Signature
+		{
+			get { return signature; }
+		}
+
+		public X509Name Issuer
+		{
+			get { return issuer; }
+		}
+
+		public Time StartDate
+		{
+			get { return startDate; }
+		}
+
+		public Time EndDate
+		{
+			get { return endDate; }
+		}
+
+		public X509Name Subject
+		{
+			get { return subject; }
+		}
+
+		public SubjectPublicKeyInfo SubjectPublicKeyInfo
+		{
+			get { return subjectPublicKeyInfo; }
+		}
+
+		public DerBitString IssuerUniqueID
+		{
+			get { return issuerUniqueID; }
+        }
+
+		public DerBitString SubjectUniqueID
+        {
+			get { return subjectUniqueID; }
+        }
+
+		public X509Extensions Extensions
+        {
+			get { return extensions; }
+        }
+
+		public override Asn1Object ToAsn1Object()
+        {
+            return seq;
+        }
+    }
+}