org.bouncycastle.asn1.DLApplicationSpecific Maven / Gradle / Ivy
package org.bouncycastle.asn1;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* A DER encoding version of an application specific object.
*/
public class DLApplicationSpecific
extends ASN1ApplicationSpecific
{
DLApplicationSpecific(
boolean isConstructed,
int tag,
byte[] octets)
{
super(isConstructed, tag, octets);
}
/**
* Create an application specific object from the passed in data. This will assume
* the data does not represent a constructed object.
*
* @param tag the tag number for this object.
* @param octets the encoding of the object's body.
*/
public DLApplicationSpecific(
int tag,
byte[] octets)
{
this(false, tag, octets);
}
/**
* Create an application specific object with a tagging of explicit/constructed.
*
* @param tag the tag number for this object.
* @param object the object to be contained.
*/
public DLApplicationSpecific(
int tag,
ASN1Encodable object)
throws IOException
{
this(true, tag, object);
}
/**
* Create an application specific object with the tagging style given by the value of constructed.
*
* @param constructed true if the object is constructed.
* @param tag the tag number for this object.
* @param object the object to be contained.
*/
public DLApplicationSpecific(
boolean constructed,
int tag,
ASN1Encodable object)
throws IOException
{
super(constructed || object.toASN1Primitive().isConstructed(), tag, getEncoding(constructed, object));
}
private static byte[] getEncoding(boolean explicit, ASN1Encodable object)
throws IOException
{
byte[] data = object.toASN1Primitive().getEncoded(ASN1Encoding.DL);
if (explicit)
{
return data;
}
else
{
int lenBytes = getLengthOfHeader(data);
byte[] tmp = new byte[data.length - lenBytes];
System.arraycopy(data, lenBytes, tmp, 0, tmp.length);
return tmp;
}
}
/**
* Create an application specific object which is marked as constructed
*
* @param tagNo the tag number for this object.
* @param vec the objects making up the application specific object.
*/
public DLApplicationSpecific(int tagNo, ASN1EncodableVector vec)
{
super(true, tagNo, getEncodedVector(vec));
}
private static byte[] getEncodedVector(ASN1EncodableVector vec)
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
for (int i = 0; i != vec.size(); i++)
{
try
{
bOut.write(((ASN1Object)vec.get(i)).getEncoded(ASN1Encoding.DL));
}
catch (IOException e)
{
throw new ASN1ParsingException("malformed object: " + e, e);
}
}
return bOut.toByteArray();
}
/* (non-Javadoc)
* @see org.bouncycastle.asn1.ASN1Primitive#encode(org.bouncycastle.asn1.DEROutputStream)
*/
void encode(ASN1OutputStream out, boolean withTag) throws IOException
{
int flags = BERTags.APPLICATION;
if (isConstructed)
{
flags |= BERTags.CONSTRUCTED;
}
out.writeEncoded(withTag, flags, tag, octets);
}
}