org.bouncycastle.asn1.DERExternal Maven / Gradle / Ivy
package org.bouncycastle.asn1;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* Class representing the DER-type External
*/
public class DERExternal
extends ASN1External
{
/**
* Construct a DER EXTERNAL object, the input encoding vector must have exactly two elements on it.
*
* Acceptable input formats are:
*
* - {@link ASN1ObjectIdentifier} + data {@link DERTaggedObject} (direct reference form)
* - {@link ASN1Integer} + data {@link DERTaggedObject} (indirect reference form)
* - Anything but {@link DERTaggedObject} + data {@link DERTaggedObject} (data value form)
*
*
* @throws IllegalArgumentException if input size is wrong, or
*/
public DERExternal(ASN1EncodableVector vector)
{
super(vector);
}
/**
* Creates a new instance of DERExternal
* See X.690 for more informations about the meaning of these parameters
* @param directReference The direct reference or null if not set.
* @param indirectReference The indirect reference or null if not set.
* @param dataValueDescriptor The data value descriptor or null if not set.
* @param externalData The external data in its encoded form.
*/
public DERExternal(ASN1ObjectIdentifier directReference, ASN1Integer indirectReference, ASN1Primitive dataValueDescriptor, DERTaggedObject externalData)
{
this(directReference, indirectReference, dataValueDescriptor, externalData.getTagNo(), externalData.toASN1Primitive());
}
/**
* Creates a new instance of DERExternal.
* See X.690 for more informations about the meaning of these parameters
* @param directReference The direct reference or null if not set.
* @param indirectReference The indirect reference or null if not set.
* @param dataValueDescriptor The data value descriptor or null if not set.
* @param encoding The encoding to be used for the external data
* @param externalData The external data
*/
public DERExternal(ASN1ObjectIdentifier directReference, ASN1Integer indirectReference, ASN1Primitive dataValueDescriptor, int encoding, ASN1Primitive externalData)
{
super(directReference, indirectReference, dataValueDescriptor, encoding, externalData);
}
ASN1Primitive toDERObject()
{
return this;
}
ASN1Primitive toDLObject()
{
return this;
}
int encodedLength()
throws IOException
{
return this.getEncoded().length;
}
/* (non-Javadoc)
* @see org.bouncycastle.asn1.ASN1Primitive#encode(org.bouncycastle.asn1.DEROutputStream)
*/
void encode(ASN1OutputStream out, boolean withTag) throws IOException
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
if (directReference != null)
{
baos.write(directReference.getEncoded(ASN1Encoding.DER));
}
if (indirectReference != null)
{
baos.write(indirectReference.getEncoded(ASN1Encoding.DER));
}
if (dataValueDescriptor != null)
{
baos.write(dataValueDescriptor.getEncoded(ASN1Encoding.DER));
}
DERTaggedObject obj = new DERTaggedObject(true, encoding, externalContent);
baos.write(obj.getEncoded(ASN1Encoding.DER));
out.writeEncoded(withTag, BERTags.CONSTRUCTED, BERTags.EXTERNAL, baos.toByteArray());
}
}