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/*

 * Copyright (c) 1996

 *      Bill Paul .  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by Bill Paul.

 * 4. Neither the name of the author nor the names of any co-contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * $FreeBSD: src/include/rpcsvc/crypt.x,v 1.3 1999/08/27 23:45:08 peter Exp $

 */

#ifndef RPC_HDR

%#ifndef lint

%static const char rcsid[] =

%  "$FreeBSD: src/include/rpcsvc/crypt.x,v 1.3 1999/08/27 23:45:08 peter Exp $";

%#endif

#endif

/*

 * This protocol definition exists because of the U.S. government and

 * its stupid export laws. We can't export DES code from the United

 * States to other countries (even though the code already exists

 * outside the U.S. -- go figure that one out) but we need to make

 * Secure RPC work. The normal way around this is to break the DES

 * code out into a shared library; we can then provide a dummy lib

 * in the base OS and provide the real lib in the secure dist, which

 * the user can install later. But we need Secure RPC for NIS+, and

 * there are several system programs that use NIS+ which are statically

 * linked. We would have to provide replacements for these programs

 * in the secure dist, but there are a lot, and this is a pain. The

 * shared lib trick won't work for these programs, and we can't change

 * them once they're compiled.

 *

 * One solution for this problem is to do the DES encryption as a system

 * call; no programs need to be changed and we can even supply the DES

 * support as an LKM. But this bloats the kernel. Maybe if we have

 * Secure NFS one day this will be worth it, but for now we should keep

 * this mess in user space.

 *

 * So we have this second solution: we provide a server that does the

 * DES encryption for us. In this case, the server is keyserv (we need

 * it to make Secure RPC work anyway) and we use this protocol to ship

 * the data back and forth between keyserv and the application.

 */

enum des_dir { ENCRYPT_DES, DECRYPT_DES };

enum des_mode { CBC_DES, ECB_DES };

struct desargs {

        u_char des_key[8];      /* key (with low bit parity) */

        des_dir des_dir;        /* direction */

        des_mode des_mode;      /* mode */

        u_char des_ivec[8];     /* input vector */

        opaque desbuf<>;

};

struct desresp {

        opaque desbuf<>;

        u_char des_ivec[8];

        int stat;

};

program CRYPT_PROG {

        version CRYPT_VERS {

                desresp

                DES_CRYPT(desargs) = 1;

        } = 1;

} = 600100029;