1 files changed, 79 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/asn1/isismtt/x509/Restriction.java b/core/src/main/java/org/spongycastle/asn1/isismtt/x509/Restriction.java
new file mode 100644
index 00000000..bd3f782b
--- /dev/null
+++ b/core/src/main/java/org/spongycastle/asn1/isismtt/x509/Restriction.java
@@ -0,0 +1,79 @@
+package org.spongycastle.asn1.isismtt.x509;
+
+import org.spongycastle.asn1.ASN1Object;
+import org.spongycastle.asn1.ASN1Primitive;
+import org.spongycastle.asn1.x500.DirectoryString;
+
+/**
+ * Some other restriction regarding the usage of this certificate.
+ *
+ * <pre>
+ *  RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
+ * </pre>
+ */
+public class Restriction
+    extends ASN1Object
+{
+    private DirectoryString restriction;
+
+    public static Restriction getInstance(Object obj)
+    {
+        if (obj instanceof Restriction)
+        {
+            return (Restriction)obj;
+        }
+
+        if (obj != null)
+        {
+            return new Restriction(DirectoryString.getInstance(obj));
+        }
+
+        return null;
+    }
+
+    /**
+     * Constructor from DirectoryString.
+     * <p/>
+     * The DirectoryString is of type RestrictionSyntax:
+     * <p/>
+     * <pre>
+     *      RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
+     * </pre>
+     *
+     * @param restriction A DirectoryString.
+     */
+    private Restriction(DirectoryString restriction)
+    {
+        this.restriction = restriction;
+    }
+
+    /**
+     * Constructor from a given details.
+     *
+     * @param restriction The describtion of the restriction.
+     */
+    public Restriction(String restriction)
+    {
+        this.restriction = new DirectoryString(restriction);
+    }
+
+    public DirectoryString getRestriction()
+    {
+        return restriction;
+    }
+
+    /**
+     * Produce an object suitable for an ASN1OutputStream.
+     * <p>
+     * Returns:
+     * <pre>
+     *      RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
+     * </pre>
+     *
+     * @return a DERObject
+     */
+    public ASN1Primitive toASN1Primitive()
+    {
+        return restriction.toASN1Primitive();
+    }
+}