org.testifyproject.bouncycastle.asn1.ASN1Null Maven / Gradle / Ivy
package org.testifyproject.bouncycastle.asn1;
import java.org.testifyproject.testifyproject.IOException;
/**
* A NULL object - use DERNull.INSTANCE for populating structures.
*/
public abstract class ASN1Null
extends ASN1Primitive
{
/**
* Return an instance of ASN.1 NULL from the passed in object.
*
* Accepted inputs:
*
* - null → null
*
- {@link ASN1Null} object
*
- a byte[] containing ASN.1 NULL object
*
*
*
* @param o object to be converted.
* @return an instance of ASN1Null, or null.
* @exception IllegalArgumentException if the object cannot be converted.
*/
public static ASN1Null getInstance(Object o)
{
if (o instanceof ASN1Null)
{
return (ASN1Null)o;
}
if (o != null)
{
try
{
return ASN1Null.getInstance(ASN1Primitive.fromByteArray((byte[])o));
}
catch (IOException e)
{
throw new IllegalArgumentException("failed to construct NULL from byte[]: " + e.getMessage());
}
catch (ClassCastException e)
{
throw new IllegalArgumentException("unknown object in getInstance(): " + o.getClass().getName());
}
}
return null;
}
public int hashCode()
{
return -1;
}
boolean asn1Equals(
ASN1Primitive o)
{
if (!(o instanceof ASN1Null))
{
return false;
}
return true;
}
abstract void encode(ASN1OutputStream out)
throws IOException;
public String toString()
{
return "NULL";
}
}