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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.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;
import org.bouncycastle.util.Arrays;

/**
 *  *     SequenceOfOctetString ::= SEQUENCE (SIZE(0..MAX)) OF OCTET STRING (SIZE(0..MAX))
 * 
 */
public class SequenceOfOctetString
    extends ASN1Object
{
    private byte[][] octetStrings;

    private SequenceOfOctetString(ASN1Sequence seq)
    {
         this.octetStrings = toByteArrays(seq);
    }

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

        return null;
    }

    public int size()
    {
        return octetStrings.length;
    }

    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector();

        for (int i = 0; i != octetStrings.length; i++)
        {
            v.add(new DEROctetString(Arrays.clone(octetStrings[i])));
        }

        return new DERSequence(v);
    }

    static byte[][] toByteArrays(ASN1Sequence seq)
    {
        byte[][] octetStrings = new byte[seq.size()][];
        for (int i = 0; i != seq.size(); i++)
        {
            octetStrings[i] = ASN1OctetString.getInstance(seq.getObjectAt(i)).getOctets();
        }

        return octetStrings;
    }
}