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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.tsp;

import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.cms.Attribute;

/**
 * Implementation of the CryptoInfos element defined in RFC 4998:
 * 
 * CryptoInfos ::= SEQUENCE SIZE (1..MAX) OF Attribute
 */
public class CryptoInfos
    extends ASN1Object
{
    private ASN1Sequence attributes;

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

        return null;
    }

    public static CryptoInfos getInstance(
        ASN1TaggedObject obj,
        boolean explicit)
    {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }

    private CryptoInfos(final ASN1Sequence attributes)
    {
        this.attributes = attributes;
    }

    public CryptoInfos(Attribute[] attrs)
    {
        attributes = new DERSequence(attrs);
    }

    public Attribute[] getAttributes()
    {
        Attribute[] rv = new Attribute[attributes.size()];

        for (int i = 0; i != rv.length; i++)
        {
            rv[i] = Attribute.getInstance(attributes.getObjectAt(i));
        }

        return rv;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return attributes;
    }
}