90 lines
3.7 KiB
Plaintext
90 lines
3.7 KiB
Plaintext
/*
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* Copyright (c) 1996
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef RPC_HDR
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%#ifndef lint
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%static const char rcsid[] =
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% "$FreeBSD$";
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%#endif
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#endif
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/*
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* This protocol definition exists because of the U.S. government and
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* its stupid export laws. We can't export DES code from the United
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* States to other countries (even though the code already exists
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* outside the U.S. -- go figure that one out) but we need to make
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* Secure RPC work. The normal way around this is to break the DES
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* code out into a shared library; we can then provide a dummy lib
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* in the base OS and provide the real lib in the secure dist, which
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* the user can install later. But we need Secure RPC for NIS+, and
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* there are several system programs that use NIS+ which are statically
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* linked. We would have to provide replacements for these programs
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* in the secure dist, but there are a lot, and this is a pain. The
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* shared lib trick won't work for these programs, and we can't change
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* them once they're compiled.
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*
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* One solution for this problem is to do the DES encryption as a system
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* call; no programs need to be changed and we can even supply the DES
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* support as an LKM. But this bloats the kernel. Maybe if we have
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* Secure NFS one day this will be worth it, but for now we should keep
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* this mess in user space.
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*
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* So we have this second solution: we provide a server that does the
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* DES encryption for us. In this case, the server is keyserv (we need
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* it to make Secure RPC work anyway) and we use this protocol to ship
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* the data back and forth between keyserv and the application.
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*/
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enum des_dir { ENCRYPT_DES, DECRYPT_DES };
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enum des_mode { CBC_DES, ECB_DES };
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struct desargs {
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u_char des_key[8]; /* key (with low bit parity) */
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des_dir des_dir; /* direction */
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des_mode des_mode; /* mode */
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u_char des_ivec[8]; /* input vector */
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opaque desbuf<>;
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};
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struct desresp {
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opaque desbuf<>;
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u_char des_ivec[8];
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int stat;
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};
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program CRYPT_PROG {
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version CRYPT_VERS {
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desresp
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DES_CRYPT(desargs) = 1;
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} = 1;
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} = 600100029;
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