1 files changed, 81 insertions, 0 deletions
diff --git a/Crypto/src/asn1/isismtt/x509/Restriction.cs b/Crypto/src/asn1/isismtt/x509/Restriction.cs
new file mode 100644
index 000000000..c97766999
--- /dev/null
+++ b/Crypto/src/asn1/isismtt/x509/Restriction.cs
@@ -0,0 +1,81 @@
+using System;
+
+using Org.BouncyCastle.Asn1.X500;
+
+namespace Org.BouncyCastle.Asn1.IsisMtt.X509
+{
+ /**
+ * Some other restriction regarding the usage of this certificate.
+ * <p/>
+ * <pre>
+ * RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
+ * </pre>
+ */
+ public class Restriction
+ : Asn1Encodable
+ {
+ private readonly DirectoryString restriction;
+
+ public static Restriction GetInstance(
+ object obj)
+ {
+ if (obj is Restriction)
+ return (Restriction) obj;
+
+ if (obj is IAsn1String)
+ return new Restriction(DirectoryString.GetInstance(obj));
+
+ throw new ArgumentException("Unknown object in GetInstance: " + obj.GetType().Name, "obj");
+ }
+
+ /**
+ * Constructor from DirectoryString.
+ * <p/>
+ * The DirectoryString is of type RestrictionSyntax:
+ * <p/>
+ * <pre>
+ * RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
+ * </pre>
+ *
+ * @param restriction A IAsn1String.
+ */
+ private Restriction(
+ DirectoryString restriction)
+ {
+ this.restriction = restriction;
+ }
+
+ /**
+ * Constructor from a given details.
+ *
+ * @param restriction The description of the restriction.
+ */
+ public Restriction(
+ string restriction)
+ {
+ this.restriction = new DirectoryString(restriction);
+ }
+
+ public virtual DirectoryString RestrictionString
+ {
+ get { return restriction; }
+ }
+
+ /**
+ * Produce an object suitable for an Asn1OutputStream.
+ * <p/>
+ * Returns:
+ * <p/>
+ * <pre>
+ * RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
+ * <p/>
+ * </pre>
+ *
+ * @return an Asn1Object
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ return restriction.ToAsn1Object();
+ }
+ }
+}
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