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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 1.8. Note: this package includes the NTRU encryption algorithms.

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package org.bouncycastle.asn1.cmc;

import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.x509.Extension;

class Utils
{
    static BodyPartID[] toBodyPartIDArray(ASN1Sequence bodyPartIDs)
    {
        BodyPartID[] ids = new BodyPartID[bodyPartIDs.size()];

        for (int i = 0; i != bodyPartIDs.size(); i++)
        {
            ids[i] = BodyPartID.getInstance(bodyPartIDs.getObjectAt(i));
        }

        return ids;
    }

    static BodyPartID[] clone(BodyPartID[] ids)
    {
        BodyPartID[] tmp = new BodyPartID[ids.length];

        System.arraycopy(ids, 0, tmp, 0, ids.length);

        return tmp;
    }

    static Extension[] clone(Extension[] ids)
    {
        Extension[] tmp = new Extension[ids.length];

        System.arraycopy(ids, 0, tmp, 0, ids.length);

        return tmp;
    }
}