org.bouncycastle.asn1.its.AesCcmCiphertext Maven / Gradle / Ivy
package org.bouncycastle.asn1.its;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
/**
*
* AesCcmCiphertext ::= SEQUENCE {
* nonce OCTET STRING (SIZE (12))
* ccmCiphertext Opaque -- 16 bytes longer than plaintext
* }
*
*/
public class AesCcmCiphertext
extends ASN1Object
{
private final byte[] nonce;
private final SequenceOfOctetString opaque;
private AesCcmCiphertext(ASN1Sequence seq)
{
if (seq.size() != 2)
{
throw new IllegalArgumentException("sequence not length 2");
}
nonce = Utils.octetStringFixed(ASN1OctetString.getInstance(seq.getObjectAt(0)).getOctets(), 12);
opaque = SequenceOfOctetString.getInstance(seq.getObjectAt(1));
}
public static AesCcmCiphertext getInstance(Object o)
{
if (o instanceof AesCcmCiphertext)
{
return (AesCcmCiphertext)o;
}
else if (o != null)
{
return new AesCcmCiphertext(ASN1Sequence.getInstance(o));
}
return null;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new DEROctetString(nonce));
v.add(opaque);
return new DERSequence(v);
}
}