Initial Commit

iTechSharp/srcbc/crypto/tls/Certificate.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections;
+using System.IO;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Crypto.Tls
+{
+	/**
+	* A representation for a certificate chain as used by an tls server.
+	*/
+	public class Certificate
+	{
+		/**
+		* The certificates.
+		*/
+		internal X509CertificateStructure[] certs;
+
+		/**
+		* Parse the ServerCertificate message.
+		*
+		* @param is The stream where to parse from.
+		* @return A Certificate object with the certs, the server has sended.
+		* @throws IOException If something goes wrong during parsing.
+		*/
+		internal static Certificate Parse(
+			Stream inStr)
+		{
+			X509CertificateStructure[] certs;
+			int left = TlsUtilities.ReadUint24(inStr);
+			ArrayList tmp = new ArrayList();
+			while (left > 0)
+			{
+				int size = TlsUtilities.ReadUint24(inStr);
+				left -= 3 + size;
+				byte[] buf = new byte[size];
+				TlsUtilities.ReadFully(buf, inStr);
+				MemoryStream bis = new MemoryStream(buf, false);
+				Asn1InputStream ais = new Asn1InputStream(bis);
+				Asn1Object o = ais.ReadObject();
+				tmp.Add(X509CertificateStructure.GetInstance(o));
+//				if (bis.available() > 0)
+				if (bis.Position < bis.Length)
+				{
+					throw new ArgumentException("Sorry, there is garbage data left after the certificate");
+				}
+			}
+//			certs = new X509CertificateStructure[tmp.size()];
+//			for (int i = 0; i < tmp.size(); i++)
+//			{
+//				certs[i] = (X509CertificateStructure)tmp.elementAt(i);
+//			}
+			certs = (X509CertificateStructure[]) tmp.ToArray(typeof(X509CertificateStructure));
+			return new Certificate(certs);
+		}
+
+		/**
+		* Private constructure from an cert array.
+		*
+		* @param certs The certs the chain should contain.
+		*/
+		private Certificate(
+			X509CertificateStructure[] certs)
+		{
+			this.certs = certs;
+		}
+
+		/// <returns>An array which contains the certs, this chain contains.</returns>
+		public X509CertificateStructure[] GetCerts()
+		{
+//			X509CertificateStructure[] result = new X509CertificateStructure[certs.Length];
+//			Array.Copy(certs, 0, result, 0, certs.Length);
+//			return result;
+			return (X509CertificateStructure[]) certs.Clone();
+		}
+	}
+}