package com.trilead.ssh2.packets;

import com.trilead.ssh2.DHGexParameters;

/**
 * PacketKexDhGexRequest.
 *
 * @author Christian Plattner, plattner@trilead.com
 * @version $Id: PacketKexDhGexRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
 */
public class PacketKexDhGexRequest {
    byte[] payload;

    int min;
    int n;
    int max;

    public PacketKexDhGexRequest(DHGexParameters para) {
        this.min = para.getMin_group_len();
        this.n = para.getPref_group_len();
        this.max = para.getMax_group_len();
    }

    public byte[] getPayload() {
        if (payload == null) {
            TypesWriter tw = new TypesWriter();
            tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST);
            tw.writeUINT32(min);
            tw.writeUINT32(n);
            tw.writeUINT32(max);
            payload = tw.getBytes();
        }

        return payload;
    }
}