1 files changed, 86 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/asn1/x9/X962Parameters.java b/core/src/main/java/org/spongycastle/asn1/x9/X962Parameters.java
new file mode 100644
index 00000000..7c95793f
--- /dev/null
+++ b/core/src/main/java/org/spongycastle/asn1/x9/X962Parameters.java
@@ -0,0 +1,86 @@
+package org.spongycastle.asn1.x9;
+
+import org.spongycastle.asn1.ASN1Choice;
+import org.spongycastle.asn1.ASN1Null;
+import org.spongycastle.asn1.ASN1Object;
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.ASN1Primitive;
+import org.spongycastle.asn1.ASN1TaggedObject;
+
+public class X962Parameters
+    extends ASN1Object
+    implements ASN1Choice
+{
+    private ASN1Primitive           params = null;
+
+    public static X962Parameters getInstance(
+        Object obj)
+    {
+        if (obj == null || obj instanceof X962Parameters) 
+        {
+            return (X962Parameters)obj;
+        }
+        
+        if (obj instanceof ASN1Primitive) 
+        {
+            return new X962Parameters((ASN1Primitive)obj);
+        }
+        
+        throw new IllegalArgumentException("unknown object in getInstance()");
+    }
+    
+    public static X962Parameters getInstance(
+        ASN1TaggedObject obj,
+        boolean          explicit)
+    {
+        return getInstance(obj.getObject()); // must be explicitly tagged
+    }
+    
+    public X962Parameters(
+        X9ECParameters      ecParameters)
+    {
+        this.params = ecParameters.toASN1Primitive();
+    }
+
+    public X962Parameters(
+        ASN1ObjectIdentifier  namedCurve)
+    {
+        this.params = namedCurve;
+    }
+
+    public X962Parameters(
+        ASN1Primitive           obj)
+    {
+        this.params = obj;
+    }
+
+    public boolean isNamedCurve()
+    {
+        return (params instanceof ASN1ObjectIdentifier);
+    }
+
+    public boolean isImplicitlyCA()
+    {
+        return (params instanceof ASN1Null);
+    }
+
+    public ASN1Primitive getParameters()
+    {
+        return params;
+    }
+
+    /**
+     * Produce an object suitable for an ASN1OutputStream.
+     * <pre>
+     * Parameters ::= CHOICE {
+     *    ecParameters ECParameters,
+     *    namedCurve   CURVES.&amp;id({CurveNames}),
+     *    implicitlyCA NULL
+     * }
+     * </pre>
+     */
+    public ASN1Primitive toASN1Primitive()
+    {
+        return (ASN1Primitive)params;
+    }
+}