Initial Commit

iTechSharp/srcbc/asn1/tsp/TimeStampReq.cs

@@ -0,0 +1,164 @@
+using System;
+
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Asn1.Tsp
+{
+	public class TimeStampReq
+		: Asn1Encodable
+	{
+		private readonly DerInteger				version;
+		private readonly MessageImprint			messageImprint;
+		private readonly DerObjectIdentifier	tsaPolicy;
+		private readonly DerInteger				nonce;
+		private readonly DerBoolean				certReq;
+		private readonly X509Extensions			extensions;
+
+		public static TimeStampReq GetInstance(
+			object o)
+		{
+			if (o == null || o is TimeStampReq)
+			{
+				return (TimeStampReq) o;
+			}
+
+			if (o is Asn1Sequence)
+			{
+				return new TimeStampReq((Asn1Sequence) o);
+			}
+
+			throw new ArgumentException(
+				"Unknown object in 'TimeStampReq' factory: " + o.GetType().FullName);
+		}
+
+		private TimeStampReq(
+			Asn1Sequence seq)
+		{
+			int nbObjects = seq.Count;
+			int seqStart = 0;
+
+			// version
+			version = DerInteger.GetInstance(seq[seqStart++]);
+
+			// messageImprint
+			messageImprint = MessageImprint.GetInstance(seq[seqStart++]);
+
+			for (int opt = seqStart; opt < nbObjects; opt++)
+			{
+				// tsaPolicy
+				if (seq[opt] is DerObjectIdentifier)
+				{
+					tsaPolicy = DerObjectIdentifier.GetInstance(seq[opt]);
+				}
+				// nonce
+				else if (seq[opt] is DerInteger)
+				{
+					nonce = DerInteger.GetInstance(seq[opt]);
+				}
+				// certReq
+				else if (seq[opt] is DerBoolean)
+				{
+					certReq = DerBoolean.GetInstance(seq[opt]);
+				}
+				// extensions
+				else if (seq[opt] is Asn1TaggedObject)
+				{
+					Asn1TaggedObject tagged = (Asn1TaggedObject) seq[opt];
+					if (tagged.TagNo == 0)
+					{
+						extensions = X509Extensions.GetInstance(tagged, false);
+					}
+				}
+			}
+		}
+
+		public TimeStampReq(
+			MessageImprint		messageImprint,
+			DerObjectIdentifier	tsaPolicy,
+			DerInteger			nonce,
+			DerBoolean			certReq,
+			X509Extensions		extensions)
+		{
+			// default
+			this.version = new DerInteger(1);
+
+			this.messageImprint = messageImprint;
+			this.tsaPolicy = tsaPolicy;
+			this.nonce = nonce;
+			this.certReq = certReq;
+			this.extensions = extensions;
+		}
+
+		public DerInteger Version
+		{
+			get { return version; }
+		}
+
+		public MessageImprint MessageImprint
+		{
+			get { return messageImprint; }
+		}
+
+		public DerObjectIdentifier ReqPolicy
+		{
+			get { return tsaPolicy; }
+		}
+
+		public DerInteger Nonce
+		{
+			get { return nonce; }
+		}
+
+		public DerBoolean CertReq
+		{
+			get { return certReq; }
+		}
+
+		public X509Extensions Extensions
+		{
+			get { return extensions; }
+		}
+
+		/**
+		 * <pre>
+		 * TimeStampReq ::= SEQUENCE  {
+		 *  version                      INTEGER  { v1(1) },
+		 *  messageImprint               MessageImprint,
+		 *    --a hash algorithm OID and the hash value of the data to be
+		 *    --time-stamped
+		 *  reqPolicy             TSAPolicyId              OPTIONAL,
+		 *  nonce                 INTEGER                  OPTIONAL,
+		 *  certReq               BOOLEAN                  DEFAULT FALSE,
+		 *  extensions            [0] IMPLICIT Extensions  OPTIONAL
+		 * }
+		 * </pre>
+		 */
+		public override Asn1Object ToAsn1Object()
+		{
+			Asn1EncodableVector v = new Asn1EncodableVector(
+				version, messageImprint);
+
+			if (tsaPolicy != null)
+			{
+				v.Add(tsaPolicy);
+			}
+
+			if (nonce != null)
+			{
+				v.Add(nonce);
+			}
+
+			if (certReq != null && certReq.IsTrue)
+			{
+				v.Add(certReq);
+			}
+
+			if (extensions != null)
+			{
+				v.Add(new DerTaggedObject(false, 0, extensions));
+			}
+
+			return new DerSequence(v);
+		}
+	}
+}