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The Bouncy Castle Java APIs for the OpenPGP Protocol. The APIs are designed primarily to be used in conjunction 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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package org.bouncycastle.bcpg;

import java.io.IOException;

/**
 * A generic compressed data object.
 */
public class CompressedDataPacket
    extends InputStreamPacket
{
    int    algorithm;

    CompressedDataPacket(
        BCPGInputStream    in)
        throws IOException
    {
        super(in);

        algorithm = in.read();
    }

    /**
     * Gets the {@link CompressionAlgorithmTags compression algorithm} used for this packet.
     * 
     * @return the compression algorithm tag value.
     */
    public int getAlgorithm()
    {
        return algorithm;
    }
}