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package org.bouncycastle.asn1.x9;
import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Null;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.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.&id({CurveNames}),
* implicitlyCA NULL
* }
* </pre>
*/
public ASN1Primitive toASN1Primitive()
{
return (ASN1Primitive)params;
}
}
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