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The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.asn1.icao;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERSet;
import org.bouncycastle.asn1.x509.Certificate;

/**
 * The CscaMasterList object. This object can be wrapped in a
 * CMSSignedData to be published in LDAP.
 *
 *  * CscaMasterList ::= SEQUENCE {
 *   version                CscaMasterListVersion,
 *   certList               SET OF Certificate }
 *
 * CscaMasterListVersion :: INTEGER {v0(0)}
 * 
 */

public class CscaMasterList
    extends ASN1Object
{
    private ASN1Integer version = new ASN1Integer(0);
    private Certificate[] certList;

    public static CscaMasterList getInstance(
        Object obj)
    {
        if (obj instanceof CscaMasterList)
        {
            return (CscaMasterList)obj;
        }
        else if (obj != null)
        {
            return new CscaMasterList(ASN1Sequence.getInstance(obj));
        }

        return null;
    }

    private CscaMasterList(
        ASN1Sequence seq)
    {
        if (seq == null || seq.size() == 0)
        {
            throw new IllegalArgumentException(
                "null or empty sequence passed.");
        }
        if (seq.size() != 2)
        {
            throw new IllegalArgumentException(
                "Incorrect sequence size: " + seq.size());
        }

        version = ASN1Integer.getInstance(seq.getObjectAt(0));
        ASN1Set certSet = ASN1Set.getInstance(seq.getObjectAt(1));
        certList = new Certificate[certSet.size()];
        for (int i = 0; i < certList.length; i++)
        {
            certList[i]
                = Certificate.getInstance(certSet.getObjectAt(i));
        }
    }

    public CscaMasterList(
        Certificate[] certStructs)
    {
        certList = copyCertList(certStructs);
    }

    public int getVersion()
    {
        return version.intValueExact();
    }

    public Certificate[] getCertStructs()
    {
        return copyCertList(certList);
    }

    private Certificate[] copyCertList(Certificate[] orig)
    {
        Certificate[] certs = new Certificate[orig.length];

        for (int i = 0; i != certs.length; i++)
        {
            certs[i] = orig[i];
        }

        return certs;
    }

    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector seq = new ASN1EncodableVector(2);

        seq.add(version);
        seq.add(new DERSet(certList));

        return new DERSequence(seq);
    }
}