1 files changed, 88 insertions, 0 deletions
diff --git a/Crypto/src/asn1/x9/OtherInfo.cs b/Crypto/src/asn1/x9/OtherInfo.cs
new file mode 100644
index 000000000..21863bd17
--- /dev/null
+++ b/Crypto/src/asn1/x9/OtherInfo.cs
@@ -0,0 +1,88 @@
+using System.Collections;
+
+namespace Org.BouncyCastle.Asn1.X9
+{
+ /**
+ * ANS.1 def for Diffie-Hellman key exchange OtherInfo structure. See
+ * RFC 2631, or X9.42, for further details.
+ */
+ public class OtherInfo
+ : Asn1Encodable
+ {
+ private KeySpecificInfo keyInfo;
+ private Asn1OctetString partyAInfo;
+ private Asn1OctetString suppPubInfo;
+
+ public OtherInfo(
+ KeySpecificInfo keyInfo,
+ Asn1OctetString partyAInfo,
+ Asn1OctetString suppPubInfo)
+ {
+ this.keyInfo = keyInfo;
+ this.partyAInfo = partyAInfo;
+ this.suppPubInfo = suppPubInfo;
+ }
+
+ public OtherInfo(
+ Asn1Sequence seq)
+ {
+ IEnumerator e = seq.GetEnumerator();
+
+ e.MoveNext();
+ keyInfo = new KeySpecificInfo((Asn1Sequence) e.Current);
+
+ while (e.MoveNext())
+ {
+ DerTaggedObject o = (DerTaggedObject) e.Current;
+
+ if (o.TagNo == 0)
+ {
+ partyAInfo = (Asn1OctetString) o.GetObject();
+ }
+ else if ((int) o.TagNo == 2)
+ {
+ suppPubInfo = (Asn1OctetString) o.GetObject();
+ }
+ }
+ }
+
+ public KeySpecificInfo KeyInfo
+ {
+ get { return keyInfo; }
+ }
+
+ public Asn1OctetString PartyAInfo
+ {
+ get { return partyAInfo; }
+ }
+
+ public Asn1OctetString SuppPubInfo
+ {
+ get { return suppPubInfo; }
+ }
+
+ /**
+ * Produce an object suitable for an Asn1OutputStream.
+ * <pre>
+ * OtherInfo ::= Sequence {
+ * keyInfo KeySpecificInfo,
+ * partyAInfo [0] OCTET STRING OPTIONAL,
+ * suppPubInfo [2] OCTET STRING
+ * }
+ * </pre>
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ Asn1EncodableVector v = new Asn1EncodableVector(keyInfo);
+
+ if (partyAInfo != null)
+ {
+ v.Add(new DerTaggedObject(0, partyAInfo));
+ }
+
+ v.Add(new DerTaggedObject(2, suppPubInfo));
+
+ return new DerSequence(v);
+ }
+ }
+}
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