1 files changed, 142 insertions, 0 deletions
diff --git a/crypto/src/asn1/x509/SubjectDirectoryAttributes.cs b/crypto/src/asn1/x509/SubjectDirectoryAttributes.cs
new file mode 100644
index 000000000..fcb30290d
--- /dev/null
+++ b/crypto/src/asn1/x509/SubjectDirectoryAttributes.cs
@@ -0,0 +1,142 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+	/**
+	 * This extension may contain further X.500 attributes of the subject. See also
+	 * RFC 3039.
+	 *
+	 * <pre>
+	 *     SubjectDirectoryAttributes ::= Attributes
+	 *     Attributes ::= SEQUENCE SIZE (1..MAX) OF Attribute
+	 *     Attribute ::= SEQUENCE
+	 *     {
+	 *       type AttributeType
+	 *       values SET OF AttributeValue
+	 *     }
+	 *
+	 *     AttributeType ::= OBJECT IDENTIFIER
+	 *     AttributeValue ::= ANY DEFINED BY AttributeType
+	 * </pre>
+	 *
+	 * @see org.bouncycastle.asn1.x509.X509Name for AttributeType ObjectIdentifiers.
+	 */
+	public class SubjectDirectoryAttributes
+		: Asn1Encodable
+	{
+		private readonly IList attributes;
+
+		public static SubjectDirectoryAttributes GetInstance(
+			object obj)
+		{
+			if (obj == null || obj is SubjectDirectoryAttributes)
+			{
+				return (SubjectDirectoryAttributes) obj;
+			}
+
+			if (obj is Asn1Sequence)
+			{
+				return new SubjectDirectoryAttributes((Asn1Sequence) obj);
+			}
+
+			throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+		}
+
+		/**
+		 * Constructor from Asn1Sequence.
+		 *
+		 * The sequence is of type SubjectDirectoryAttributes:
+		 *
+		 * <pre>
+		 *      SubjectDirectoryAttributes ::= Attributes
+		 *      Attributes ::= SEQUENCE SIZE (1..MAX) OF Attribute
+		 *      Attribute ::= SEQUENCE
+		 *      {
+		 *        type AttributeType
+		 *        values SET OF AttributeValue
+		 *      }
+		 *
+		 *      AttributeType ::= OBJECT IDENTIFIER
+		 *      AttributeValue ::= ANY DEFINED BY AttributeType
+		 * </pre>
+		 *
+		 * @param seq
+		 *            The ASN.1 sequence.
+		 */
+		private SubjectDirectoryAttributes(
+			Asn1Sequence seq)
+		{
+            this.attributes = Platform.CreateArrayList();
+            foreach (object o in seq)
+			{
+				Asn1Sequence s = Asn1Sequence.GetInstance(o);
+				attributes.Add(AttributeX509.GetInstance(s));
+			}
+		}
+
+#if !SILVERLIGHT
+        [Obsolete]
+        public SubjectDirectoryAttributes(
+            ArrayList attributes)
+            : this((IList)attributes)
+        {
+        }
+#endif
+
+        /**
+		 * Constructor from an ArrayList of attributes.
+		 *
+		 * The ArrayList consists of attributes of type {@link Attribute Attribute}
+		 *
+		 * @param attributes The attributes.
+		 *
+		 */
+		public SubjectDirectoryAttributes(
+			IList attributes)
+		{
+            this.attributes = Platform.CreateArrayList(attributes);
+        }
+
+		/**
+		 * Produce an object suitable for an Asn1OutputStream.
+		 *
+		 * Returns:
+		 *
+		 * <pre>
+		 *      SubjectDirectoryAttributes ::= Attributes
+		 *      Attributes ::= SEQUENCE SIZE (1..MAX) OF Attribute
+		 *      Attribute ::= SEQUENCE
+		 *      {
+		 *        type AttributeType
+		 *        values SET OF AttributeValue
+		 *      }
+		 *
+		 *      AttributeType ::= OBJECT IDENTIFIER
+		 *      AttributeValue ::= ANY DEFINED BY AttributeType
+		 * </pre>
+		 *
+		 * @return a DERObject
+		 */
+		public override Asn1Object ToAsn1Object()
+		{
+            AttributeX509[] v = new AttributeX509[attributes.Count];
+            for (int i = 0; i < attributes.Count; ++i)
+            {
+                v[i] = (AttributeX509)attributes[i];
+            }
+            return new DerSequence(v);
+		}
+
+        /**
+		 * @return Returns the attributes.
+		 */
+		public IEnumerable Attributes
+		{
+			get { return new EnumerableProxy(attributes); }
+		}
+	}
+}