1 files changed, 123 insertions, 0 deletions
diff --git a/Crypto/src/asn1/x509/TargetInformation.cs b/Crypto/src/asn1/x509/TargetInformation.cs
new file mode 100644
index 000000000..75b18c0c9
--- /dev/null
+++ b/Crypto/src/asn1/x509/TargetInformation.cs
@@ -0,0 +1,123 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+ /**
+ * Target information extension for attributes certificates according to RFC
+ * 3281.
+ *
+ * <pre>
+ * SEQUENCE OF Targets
+ * </pre>
+ *
+ */
+ public class TargetInformation
+ : Asn1Encodable
+ {
+ private readonly Asn1Sequence targets;
+
+ /**
+ * Creates an instance of a TargetInformation from the given object.
+ * <p>
+ * <code>obj</code> can be a TargetInformation or a {@link Asn1Sequence}</p>
+ *
+ * @param obj The object.
+ * @return A TargetInformation instance.
+ * @throws ArgumentException if the given object cannot be interpreted as TargetInformation.
+ */
+ public static TargetInformation GetInstance(
+ object obj)
+ {
+ if (obj is TargetInformation)
+ {
+ return (TargetInformation) obj;
+ }
+
+ if (obj is Asn1Sequence)
+ {
+ return new TargetInformation((Asn1Sequence) obj);
+ }
+
+ throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+ }
+
+ /**
+ * Constructor from a Asn1Sequence.
+ *
+ * @param seq The Asn1Sequence.
+ * @throws ArgumentException if the sequence does not contain
+ * correctly encoded Targets elements.
+ */
+ private TargetInformation(
+ Asn1Sequence targets)
+ {
+ this.targets = targets;
+ }
+
+ /**
+ * Returns the targets in this target information extension.
+ * <p>
+ * The ArrayList is cloned before it is returned.</p>
+ *
+ * @return Returns the targets.
+ */
+ public virtual Targets[] GetTargetsObjects()
+ {
+ Targets[] result = new Targets[targets.Count];
+
+ for (int i = 0; i < targets.Count; ++i)
+ {
+ result[i] = Targets.GetInstance(targets[i]);
+ }
+
+ return result;
+ }
+
+ /**
+ * Constructs a target information from a single targets element.
+ * According to RFC 3281 only one targets element must be produced.
+ *
+ * @param targets A Targets instance.
+ */
+ public TargetInformation(
+ Targets targets)
+ {
+ this.targets = new DerSequence(targets);
+ }
+
+ /**
+ * According to RFC 3281 only one targets element must be produced. If
+ * multiple targets are given they must be merged in
+ * into one targets element.
+ *
+ * @param targets An array with {@link Targets}.
+ */
+ public TargetInformation(
+ Target[] targets)
+ : this(new Targets(targets))
+ {
+ }
+
+ /**
+ * Produce an object suitable for an Asn1OutputStream.
+ *
+ * Returns:
+ *
+ * <pre>
+ * SEQUENCE OF Targets
+ * </pre>
+ *
+ * <p>
+ * According to RFC 3281 only one targets element must be produced. If
+ * multiple targets are given in the constructor they are merged into one
+ * targets element. If this was produced from a
+ * {@link Org.BouncyCastle.Asn1.Asn1Sequence} the encoding is kept.</p>
+ *
+ * @return an Asn1Object
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ return targets;
+ }
+ }
+}
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