1 files changed, 35 insertions, 0 deletions
diff --git a/crypto/src/asn1/x9/X962Parameters.cs b/crypto/src/asn1/x9/X962Parameters.cs
index 5b7eaa1de..04a5c9cbe 100644
--- a/crypto/src/asn1/x9/X962Parameters.cs
+++ b/crypto/src/asn1/x9/X962Parameters.cs
@@ -1,3 +1,5 @@
+using System;
+
using Org.BouncyCastle.Asn1;
namespace Org.BouncyCastle.Asn1.X9
@@ -7,6 +9,34 @@ namespace Org.BouncyCastle.Asn1.X9
{
private readonly Asn1Object _params;
+ public static X962Parameters GetInstance(
+ object obj)
+ {
+ if (obj == null || obj is X962Parameters)
+ {
+ return (X962Parameters)obj;
+ }
+
+ if (obj is Asn1Object)
+ {
+ return new X962Parameters((Asn1Object)obj);
+ }
+
+ if (obj is byte[])
+ {
+ try
+ {
+ return new X962Parameters(Asn1Object.FromByteArray((byte[])obj));
+ }
+ catch (Exception e)
+ {
+ throw new ArgumentException("unable to parse encoded data: " + e.Message, e);
+ }
+ }
+
+ throw new ArgumentException("unknown object in getInstance()");
+ }
+
public X962Parameters(
X9ECParameters ecParameters)
{
@@ -30,6 +60,11 @@ namespace Org.BouncyCastle.Asn1.X9
get { return (_params is DerObjectIdentifier); }
}
+ public bool IsImplicitlyCA
+ {
+ get { return (_params is Asn1Null); }
+ }
+
public Asn1Object Parameters
{
get { return _params; }
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