1 files changed, 104 insertions, 0 deletions
diff --git a/crypto/src/asn1/x509/UserNotice.cs b/crypto/src/asn1/x509/UserNotice.cs
new file mode 100644
index 000000000..2878a180f
--- /dev/null
+++ b/crypto/src/asn1/x509/UserNotice.cs
@@ -0,0 +1,104 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+    /**
+     * <code>UserNotice</code> class, used in
+     * <code>CertificatePolicies</code> X509 extensions (in policy
+     * qualifiers).
+     * <pre>
+     * UserNotice ::= Sequence {
+     *      noticeRef        NoticeReference OPTIONAL,
+     *      explicitText     DisplayText OPTIONAL}
+     *
+     * </pre>
+     *
+     * @see PolicyQualifierId
+     * @see PolicyInformation
+     */
+    public class UserNotice
+        : Asn1Encodable
+    {
+        internal NoticeReference	noticeRef;
+        internal DisplayText		explicitText;
+
+		/**
+         * Creates a new <code>UserNotice</code> instance.
+         *
+         * @param noticeRef a <code>NoticeReference</code> value
+         * @param explicitText a <code>DisplayText</code> value
+         */
+        public UserNotice(
+            NoticeReference	noticeRef,
+            DisplayText		explicitText)
+        {
+            this.noticeRef = noticeRef;
+            this.explicitText = explicitText;
+        }
+
+		/**
+         * Creates a new <code>UserNotice</code> instance.
+         *
+         * @param noticeRef a <code>NoticeReference</code> value
+         * @param str the explicitText field as a string.
+         */
+        public UserNotice(
+            NoticeReference	noticeRef,
+            string			str)
+        {
+            this.noticeRef = noticeRef;
+            this.explicitText = new DisplayText(str);
+        }
+
+		/**
+		 * Creates a new <code>UserNotice</code> instance.
+		 * <p>Useful from reconstructing a <code>UserNotice</code> instance
+		 * from its encodable/encoded form.
+		 *
+		 * @param as an <code>ASN1Sequence</code> value obtained from either
+		 * calling @{link toASN1Object()} for a <code>UserNotice</code>
+		 * instance or from parsing it from a DER-encoded stream.</p>
+		 */
+		public UserNotice(
+			Asn1Sequence seq)
+		{
+			if (seq.Count == 2)
+			{
+				noticeRef = NoticeReference.GetInstance(seq[0]);
+				explicitText = DisplayText.GetInstance(seq[1]);
+			}
+			else if (seq.Count == 1)
+			{
+				if (seq[0].ToAsn1Object() is Asn1Sequence)
+				{
+					noticeRef = NoticeReference.GetInstance(seq[0]);
+				}
+				else
+				{
+					explicitText = DisplayText.GetInstance(seq[0]);
+				}
+			}
+			else
+			{
+				throw new ArgumentException("Bad sequence size: " + seq.Count);
+			}
+        }
+
+		public override Asn1Object ToAsn1Object()
+        {
+            Asn1EncodableVector av = new Asn1EncodableVector();
+
+			if (noticeRef != null)
+            {
+                av.Add(noticeRef);
+            }
+
+			if (explicitText != null)
+            {
+                av.Add(explicitText);
+            }
+
+			return new DerSequence(av);
+        }
+    }
+}