/* * Copyright (c) 1996 * Bill Paul <wpaul@ctr.columbia.edu>. 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. */ #ifndef RPC_HDR %#include <sys/cdefs.h> %__FBSDID("$FreeBSD: src/include/rpcsvc/crypt.x,v 1.5 2003/05/04 02:51:42 obrien Exp $"); #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;