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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 to JDK 1.7. Note: this package includes the IDEA and NTRU encryption algorithms.

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package org.bouncycastle.asn1.bc;

import java.util.Iterator;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.util.Arrays;

/**
 *  * ObjectDataSequence ::= SEQUENCE OF ObjectData
 * 
 */
public class ObjectDataSequence
    extends ASN1Object
    implements org.bouncycastle.util.Iterable
{
    private final ASN1Encodable[] dataSequence;

    public ObjectDataSequence(ObjectData[] dataSequence)
    {
        this.dataSequence = new ASN1Encodable[dataSequence.length];

        System.arraycopy(dataSequence, 0, this.dataSequence, 0, dataSequence.length);
    }

    private ObjectDataSequence(ASN1Sequence seq)
    {
        dataSequence = new ASN1Encodable[seq.size()];

        for (int i = 0; i != dataSequence.length; i++)
        {
            dataSequence[i] = ObjectData.getInstance(seq.getObjectAt(i));
        }
    }

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

        return null;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return new DERSequence(dataSequence);
    }

    public Iterator iterator()
    {
        return new Arrays.Iterator(dataSequence);
    }
}