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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;

import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.Strings;

/**
 * Generic literal data packet.
 */
public class LiteralDataPacket
    extends InputStreamPacket
{
    int     format;
    byte[]  fileName;
    long    modDate;

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

        format = in.read();
        int    l = in.read();

        fileName = new byte[l];
        for (int i = 0; i != fileName.length; i++)
        {
            int ch = in.read();
            if (ch < 0)
            {
                throw new IOException("literal data truncated in header");
            }
            fileName[i] = (byte)ch;
        }

        modDate = ((long)in.read() << 24) | (in.read() << 16) | (in.read() << 8) | in.read();
        if (modDate < 0)
        {
            throw new IOException("literal data truncated in header");
        }
    }

    /**
     * Return the format tag of the data packet.
     */
    public int getFormat()
    {
        return format;
    }

    /**
     * Return the modification time for the file (milliseconds at second level precision).
     */
    public long getModificationTime()
    {
        return modDate * 1000L;
    }

    /**
     * Return the file name associated with the data packet.
     */
    public String getFileName()
    {
        return Strings.fromUTF8ByteArray(fileName);
    }

    /**
     * Return the file name as an uninterpreted byte array.
     */
    public byte[] getRawFileName()
    {
        return Arrays.clone(fileName);
    }
}