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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.sig;

import org.bouncycastle.bcpg.SignatureSubpacket;

/**
 * packet giving signature creation time.
 */
public class PreferredAlgorithms 
    extends SignatureSubpacket
{    
    private static byte[] intToByteArray(
        int[]    v)
    {
        byte[]    data = new byte[v.length];
        
        for (int i = 0; i != v.length; i++)
        {
            data[i] = (byte)v[i];
        }
        
        return data;
    }
    
    public PreferredAlgorithms(
        int        type,
        boolean    critical,
        boolean    isLongLength,
        byte[]     data)
    {
        super(type, critical, isLongLength, data);
    }
    
    public PreferredAlgorithms(
        int        type,
        boolean    critical,
        int[]      preferences)
    {
        super(type, critical, false, intToByteArray(preferences));
    }

    public int[] getPreferences()
    {
        int[]    v = new int[data.length];
        
        for (int i = 0; i != v.length; i++)
        {
            v[i] = data[i] & 0xff;
        }
        
        return v;
    }
}