1 | /* |
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2 | * Copyright (c) 1996 |
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3 | * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * 3. All advertising materials mentioning features or use of this software |
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14 | * must display the following acknowledgement: |
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15 | * This product includes software developed by Bill Paul. |
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16 | * 4. Neither the name of the author nor the names of any co-contributors |
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17 | * may be used to endorse or promote products derived from this software |
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18 | * without specific prior written permission. |
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19 | * |
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20 | * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND |
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21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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23 | * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE |
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24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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30 | * SUCH DAMAGE. |
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31 | * |
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32 | * $FreeBSD: src/include/rpcsvc/crypt.x,v 1.3 1999/08/27 23:45:08 peter Exp $ |
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33 | */ |
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34 | |
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35 | #ifndef RPC_HDR |
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36 | %#ifndef lint |
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37 | %static const char rcsid[] = |
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38 | % "$FreeBSD: src/include/rpcsvc/crypt.x,v 1.3 1999/08/27 23:45:08 peter Exp $"; |
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39 | %#endif |
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40 | #endif |
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41 | |
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42 | /* |
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43 | * This protocol definition exists because of the U.S. government and |
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44 | * its stupid export laws. We can't export DES code from the United |
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45 | * States to other countries (even though the code already exists |
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46 | * outside the U.S. -- go figure that one out) but we need to make |
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47 | * Secure RPC work. The normal way around this is to break the DES |
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48 | * code out into a shared library; we can then provide a dummy lib |
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49 | * in the base OS and provide the real lib in the secure dist, which |
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50 | * the user can install later. But we need Secure RPC for NIS+, and |
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51 | * there are several system programs that use NIS+ which are statically |
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52 | * linked. We would have to provide replacements for these programs |
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53 | * in the secure dist, but there are a lot, and this is a pain. The |
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54 | * shared lib trick won't work for these programs, and we can't change |
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55 | * them once they're compiled. |
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56 | * |
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57 | * One solution for this problem is to do the DES encryption as a system |
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58 | * call; no programs need to be changed and we can even supply the DES |
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59 | * support as an LKM. But this bloats the kernel. Maybe if we have |
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60 | * Secure NFS one day this will be worth it, but for now we should keep |
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61 | * this mess in user space. |
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62 | * |
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63 | * So we have this second solution: we provide a server that does the |
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64 | * DES encryption for us. In this case, the server is keyserv (we need |
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65 | * it to make Secure RPC work anyway) and we use this protocol to ship |
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66 | * the data back and forth between keyserv and the application. |
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67 | */ |
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68 | |
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69 | enum des_dir { ENCRYPT_DES, DECRYPT_DES }; |
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70 | enum des_mode { CBC_DES, ECB_DES }; |
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71 | |
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72 | struct desargs { |
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73 | u_char des_key[8]; /* key (with low bit parity) */ |
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74 | des_dir des_dir; /* direction */ |
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75 | des_mode des_mode; /* mode */ |
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76 | u_char des_ivec[8]; /* input vector */ |
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77 | opaque desbuf<>; |
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78 | }; |
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79 | |
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80 | struct desresp { |
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81 | opaque desbuf<>; |
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82 | u_char des_ivec[8]; |
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83 | int stat; |
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84 | }; |
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85 | |
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86 | program CRYPT_PROG { |
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87 | version CRYPT_VERS { |
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88 | desresp |
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89 | DES_CRYPT(desargs) = 1; |
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90 | } = 1; |
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91 | } = 600100029; |
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