org.bouncycastle.asn1.cmp.KemBMParameter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcutil-fips Show documentation

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.

The newest version!

package org.bouncycastle.asn1.cmp;

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.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 *  *  KemBMParameter ::= SEQUENCE {
 *      kdf              AlgorithmIdentifier{KEY-DERIVATION, {...}},
 *      len              INTEGER (1..MAX),
 *      mac              AlgorithmIdentifier{MAC-ALGORITHM, {...}}
 *   }
 * 
 */
public class KemBMParameter
    extends ASN1Object
{
    private final AlgorithmIdentifier kdf;
    private final ASN1Integer len;
    private final AlgorithmIdentifier mac;

    private KemBMParameter(ASN1Sequence seq)
    {
        if (seq.size() != 3)
        {
            throw new IllegalArgumentException("sequence size should 3");
        }

        kdf = AlgorithmIdentifier.getInstance(seq.getObjectAt(0));
        len = ASN1Integer.getInstance(seq.getObjectAt(1));
        mac = AlgorithmIdentifier.getInstance(seq.getObjectAt(2));
    }

    public KemBMParameter(
        AlgorithmIdentifier kdf,
        ASN1Integer len,
        AlgorithmIdentifier mac)
    {
        this.kdf = kdf;
        this.len = len;
        this.mac = mac;
    }

    public KemBMParameter(
        AlgorithmIdentifier kdf,
        long len,
        AlgorithmIdentifier mac)
    {
        this(kdf, new ASN1Integer(len), mac);
    }

    public static KemBMParameter getInstance(Object o)
    {
        if (o instanceof KemBMParameter)
        {
            return (KemBMParameter)o;
        }

        if (o != null)
        {
            return new KemBMParameter(ASN1Sequence.getInstance(o));
        }

        return null;
    }

    public AlgorithmIdentifier getKdf()
    {
        return kdf;
    }

    public ASN1Integer getLen()
    {
        return len;
    }

    public AlgorithmIdentifier getMac()
    {
        return mac;
    }

    /**
     *      *  KemBMParameter ::= SEQUENCE {
     *      kdf              AlgorithmIdentifier{KEY-DERIVATION, {...}},
     *      len              INTEGER (1..MAX),
     *      mac              AlgorithmIdentifier{MAC-ALGORITHM, {...}}
     *    }
     * 
     *
     * @return a basic ASN.1 object representation.
     */
    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector(3);

        v.add(kdf);
        v.add(len);
        v.add(mac);

        return new DERSequence(v);
    }
}