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1 | /* crypto/des/rpc_enc.c */ |
2 | /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include "rpc_des.h" | |
60 | #include "des_locl.h" | |
61 | #include "des_ver.h" | |
62 | ||
63 | #ifndef NOPROTO | |
64 | int _des_crypt(char *buf,int len,struct desparams *desp); | |
65 | #else | |
66 | int _des_crypt(); | |
67 | #endif | |
68 | ||
69 | int _des_crypt(buf, len, desp) | |
70 | char *buf; | |
71 | int len; | |
72 | struct desparams *desp; | |
73 | { | |
74 | des_key_schedule ks; | |
75 | int enc; | |
76 | ||
77 | des_set_key((des_cblock *)desp->des_key,ks); | |
78 | enc=(desp->des_dir == ENCRYPT)?DES_ENCRYPT:DES_DECRYPT; | |
79 | ||
80 | if (desp->des_mode == CBC) | |
81 | des_ecb_encrypt((des_cblock *)desp->UDES.UDES_buf, | |
82 | (des_cblock *)desp->UDES.UDES_buf,ks,enc); | |
83 | else | |
84 | { | |
85 | des_ncbc_encrypt((des_cblock *)desp->UDES.UDES_buf, | |
86 | (des_cblock *)desp->UDES.UDES_buf, | |
87 | (long)len,ks, | |
88 | (des_cblock *)desp->des_ivec,enc); | |
89 | #ifdef undef | |
90 | /* len will always be %8 if called from common_crypt | |
91 | * in secure_rpc. | |
92 | * Libdes's cbc encrypt does not copy back the iv, | |
93 | * so we have to do it here. */ | |
94 | /* It does now :-) eay 20/09/95 */ | |
95 | ||
96 | a=(char *)&(desp->UDES.UDES_buf[len-8]); | |
97 | b=(char *)&(desp->des_ivec[0]); | |
98 | ||
99 | *(a++)= *(b++); *(a++)= *(b++); | |
100 | *(a++)= *(b++); *(a++)= *(b++); | |
101 | *(a++)= *(b++); *(a++)= *(b++); | |
102 | *(a++)= *(b++); *(a++)= *(b++); | |
103 | #endif | |
104 | } | |
105 | return(1); | |
106 | } | |
107 |