org.bouncycastle.asn1.cms.OriginatorPublicKey Maven / Gradle / Ivy

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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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/******    DO NOT EDIT THIS CLASS bc-java SOURCE FILE     ******/
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package org.bouncycastle.asn1.cms;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * RFC 5652:
 * Content encryption key delivery mechanisms.
 * 
 * 
 * OriginatorPublicKey ::= SEQUENCE {
 *     algorithm AlgorithmIdentifier,
 *     publicKey BIT STRING 
 * }
 * 
 */
public class OriginatorPublicKey
    extends ASN1Object
{
    private AlgorithmIdentifier algorithm;
    private DERBitString        publicKey;
    
    public OriginatorPublicKey(
        AlgorithmIdentifier algorithm,
        byte[]              publicKey)
    {
        this.algorithm = algorithm;
        this.publicKey = new DERBitString(publicKey);
    }

    private OriginatorPublicKey(
        ASN1Sequence seq)
    {
        algorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(0));
        publicKey = (DERBitString)seq.getObjectAt(1);
    }
    
    /**
     * Return an OriginatorPublicKey object from a tagged object.
     *
     * @param obj the tagged object holding the object we want.
     * @param explicit true if the object is meant to be explicitly
     *              tagged false otherwise.
     * @exception IllegalArgumentException if the object held by the
     *          tagged object cannot be converted.
     */
    public static OriginatorPublicKey getInstance(
        ASN1TaggedObject    obj,
        boolean             explicit)
    {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }
    
    /**
     * Return an OriginatorPublicKey object from the given object.
     * 
     * Accepted inputs:
     * 

     *  null → null
     * 
 {@link OriginatorPublicKey} object
     * 
 {@link org.bouncycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with OriginatorPublicKey structure inside
     * 
     *
     * @param obj the object we want converted.
     * @exception IllegalArgumentException if the object cannot be converted.
     */
    public static OriginatorPublicKey getInstance(
        Object obj)
    {
        if (obj instanceof OriginatorPublicKey)
        {
            return (OriginatorPublicKey)obj;
        }
        
        if (obj != null)
        {
            return new OriginatorPublicKey(ASN1Sequence.getInstance(obj));
        }

        return null;
    } 

    public AlgorithmIdentifier getAlgorithm()
    {
        return algorithm;
    }

    public DERBitString getPublicKey()
    {
        return publicKey;
    }

    /** 
     * Produce an object suitable for an ASN1OutputStream.
     */
    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector  v = new ASN1EncodableVector();

        v.add(algorithm);
        v.add(publicKey);

        return new DERSequence(v);
    }
}