1 files changed, 68 insertions, 0 deletions
diff --git a/Crypto/src/asn1/misc/IDEACBCPar.cs b/Crypto/src/asn1/misc/IDEACBCPar.cs
new file mode 100644
index 000000000..72a60b9dc
--- /dev/null
+++ b/Crypto/src/asn1/misc/IDEACBCPar.cs
@@ -0,0 +1,68 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.Misc
+{
+ public class IdeaCbcPar
+ : Asn1Encodable
+ {
+ internal Asn1OctetString iv;
+
+ public static IdeaCbcPar GetInstance(
+ object o)
+ {
+ if (o is IdeaCbcPar)
+ {
+ return (IdeaCbcPar) o;
+ }
+
+ if (o is Asn1Sequence)
+ {
+ return new IdeaCbcPar((Asn1Sequence) o);
+ }
+
+ throw new ArgumentException("unknown object in IDEACBCPar factory");
+ }
+
+ public IdeaCbcPar(
+ byte[] iv)
+ {
+ this.iv = new DerOctetString(iv);
+ }
+
+ private IdeaCbcPar(
+ Asn1Sequence seq)
+ {
+ if (seq.Count == 1)
+ {
+ iv = (Asn1OctetString) seq[0];
+ }
+ }
+
+ public byte[] GetIV()
+ {
+ return iv == null ? null : iv.GetOctets();
+ }
+
+ /**
+ * Produce an object suitable for an Asn1OutputStream.
+ * <pre>
+ * IDEA-CBCPar ::= Sequence {
+ * iv OCTET STRING OPTIONAL -- exactly 8 octets
+ * }
+ * </pre>
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ Asn1EncodableVector v = new Asn1EncodableVector();
+
+ if (iv != null)
+ {
+ v.Add(iv);
+ }
+
+ return new DerSequence(v);
+ }
+ }
+}
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