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package org.bouncycastle.asn1;
import java.io.IOException;
/**
* Base class for ASN.1 primitive objects. These are the actual objects used to generate byte encodings.
*/
public abstract class ASN1Primitive
extends ASN1Object
{
ASN1Primitive()
{
}
/**
* Create a base ASN.1 object from a byte stream.
*
* @param data the byte stream to parse.
* @return the base ASN.1 object represented by the byte stream.
* @exception IOException if there is a problem parsing the data.
*/
public static ASN1Primitive fromByteArray(byte[] data)
throws IOException
{
ASN1InputStream aIn = new ASN1InputStream(data);
try
{
return aIn.readObject();
}
catch (ClassCastException e)
{
throw new IOException("cannot recognise object in stream");
}
}
public final boolean equals(Object o)
{
if (this == o)
{
return true;
}
return (o instanceof ASN1Encodable) && asn1Equals(((ASN1Encodable)o).toASN1Primitive());
}
public ASN1Primitive toASN1Primitive()
{
return this;
}
/**
* Return the current object as one which encodes using Distinguished Encoding Rules.
*
* @return a DER version of this.
*/
ASN1Primitive toDERObject()
{
return this;
}
/**
* Return the current object as one which encodes using Definite Length encoding.
*
* @return a DL version of this.
*/
ASN1Primitive toDLObject()
{
return this;
}
public abstract int hashCode();
abstract boolean isConstructed();
abstract int encodedLength() throws IOException;
abstract void encode(ASN1OutputStream out) throws IOException;
abstract boolean asn1Equals(ASN1Primitive o);
}
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