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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 and up.

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package org.bouncycastle.asn1.cmc;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;

/**
 *  * OtherMsg ::= SEQUENCE {
 *     bodyPartID        BodyPartID,
 *     otherMsgType      OBJECT IDENTIFIER,
 *     otherMsgValue     ANY DEFINED BY otherMsgType }
 * 
 */
public class OtherMsg
    extends ASN1Object
{
    private final BodyPartID bodyPartID;
    private final ASN1ObjectIdentifier otherMsgType;
    private final ASN1Encodable otherMsgValue;

    public OtherMsg(BodyPartID bodyPartID, ASN1ObjectIdentifier otherMsgType, ASN1Encodable otherMsgValue)
    {
        this.bodyPartID = bodyPartID;
        this.otherMsgType = otherMsgType;
        this.otherMsgValue = otherMsgValue;
    }

    private OtherMsg(ASN1Sequence seq)
    {
        if (seq.size() != 3)
        {
            throw new IllegalArgumentException("incorrect sequence size");
        }
        this.bodyPartID = BodyPartID.getInstance(seq.getObjectAt(0));
        this.otherMsgType = ASN1ObjectIdentifier.getInstance(seq.getObjectAt(1));
        this.otherMsgValue = seq.getObjectAt(2);
    }

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

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

        return null;
    }

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

    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector(3);

        v.add(bodyPartID);
        v.add(otherMsgType);
        v.add(otherMsgValue);

        return new DERSequence(v);
    }

    public BodyPartID getBodyPartID()
    {
        return bodyPartID;
    }

    public ASN1ObjectIdentifier getOtherMsgType()
    {
        return otherMsgType;
    }

    public ASN1Encodable getOtherMsgValue()
    {
        return otherMsgValue;
    }
}