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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.8 and up. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

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package org.bouncycastle.cms;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.cms.CMSObjectIdentifiers;
import org.bouncycastle.util.Arrays;

/**
 * a holding class for a byte array of data to be processed.
 */
public class CMSProcessableByteArray
    implements CMSTypedData, CMSReadable
{
    private final ASN1ObjectIdentifier type;
    private final byte[]  bytes;

    public CMSProcessableByteArray(
        byte[]  bytes)
    {
        this(CMSObjectIdentifiers.data, bytes);
    }

    public CMSProcessableByteArray(
        ASN1ObjectIdentifier type,
        byte[]  bytes)
    {
        this.type = type;
        this.bytes = bytes;
    }

    public InputStream getInputStream()
    {
        return new ByteArrayInputStream(bytes);
    }

    public void write(OutputStream zOut)
        throws IOException, CMSException
    {
        zOut.write(bytes);
    }

    public Object getContent()
    {
        return Arrays.clone(bytes);
    }

    public ASN1ObjectIdentifier getContentType()
    {
        return type;
    }
}