1*c9496f6bSchristos /* crypto/des/rpc_enc.c */
2*c9496f6bSchristos /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3*c9496f6bSchristos * All rights reserved.
4*c9496f6bSchristos *
5*c9496f6bSchristos * This package is an SSL implementation written
6*c9496f6bSchristos * by Eric Young (eay@cryptsoft.com).
7*c9496f6bSchristos * The implementation was written so as to conform with Netscapes SSL.
8*c9496f6bSchristos *
9*c9496f6bSchristos * This library is free for commercial and non-commercial use as long as
10*c9496f6bSchristos * the following conditions are aheared to. The following conditions
11*c9496f6bSchristos * apply to all code found in this distribution, be it the RC4, RSA,
12*c9496f6bSchristos * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13*c9496f6bSchristos * included with this distribution is covered by the same copyright terms
14*c9496f6bSchristos * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15*c9496f6bSchristos *
16*c9496f6bSchristos * Copyright remains Eric Young's, and as such any Copyright notices in
17*c9496f6bSchristos * the code are not to be removed.
18*c9496f6bSchristos * If this package is used in a product, Eric Young should be given attribution
19*c9496f6bSchristos * as the author of the parts of the library used.
20*c9496f6bSchristos * This can be in the form of a textual message at program startup or
21*c9496f6bSchristos * in documentation (online or textual) provided with the package.
22*c9496f6bSchristos *
23*c9496f6bSchristos * Redistribution and use in source and binary forms, with or without
24*c9496f6bSchristos * modification, are permitted provided that the following conditions
25*c9496f6bSchristos * are met:
26*c9496f6bSchristos * 1. Redistributions of source code must retain the copyright
27*c9496f6bSchristos * notice, this list of conditions and the following disclaimer.
28*c9496f6bSchristos * 2. Redistributions in binary form must reproduce the above copyright
29*c9496f6bSchristos * notice, this list of conditions and the following disclaimer in the
30*c9496f6bSchristos * documentation and/or other materials provided with the distribution.
31*c9496f6bSchristos * 3. All advertising materials mentioning features or use of this software
32*c9496f6bSchristos * must display the following acknowledgement:
33*c9496f6bSchristos * "This product includes cryptographic software written by
34*c9496f6bSchristos * Eric Young (eay@cryptsoft.com)"
35*c9496f6bSchristos * The word 'cryptographic' can be left out if the rouines from the library
36*c9496f6bSchristos * being used are not cryptographic related :-).
37*c9496f6bSchristos * 4. If you include any Windows specific code (or a derivative thereof) from
38*c9496f6bSchristos * the apps directory (application code) you must include an acknowledgement:
39*c9496f6bSchristos * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40*c9496f6bSchristos *
41*c9496f6bSchristos * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42*c9496f6bSchristos * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43*c9496f6bSchristos * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44*c9496f6bSchristos * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45*c9496f6bSchristos * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46*c9496f6bSchristos * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47*c9496f6bSchristos * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48*c9496f6bSchristos * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49*c9496f6bSchristos * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50*c9496f6bSchristos * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51*c9496f6bSchristos * SUCH DAMAGE.
52*c9496f6bSchristos *
53*c9496f6bSchristos * The licence and distribution terms for any publically available version or
54*c9496f6bSchristos * derivative of this code cannot be changed. i.e. this code cannot simply be
55*c9496f6bSchristos * copied and put under another distribution licence
56*c9496f6bSchristos * [including the GNU Public Licence.]
57*c9496f6bSchristos */
58*c9496f6bSchristos
59*c9496f6bSchristos #include "rpc_des.h"
60*c9496f6bSchristos #include "des_locl.h"
61*c9496f6bSchristos
62*c9496f6bSchristos int _des_crypt(char *buf,int len,struct desparams *desp);
_des_crypt(char * buf,int len,struct desparams * desp)63*c9496f6bSchristos int _des_crypt(char *buf, int len, struct desparams *desp)
64*c9496f6bSchristos {
65*c9496f6bSchristos des_key_schedule ks;
66*c9496f6bSchristos int enc;
67*c9496f6bSchristos
68*c9496f6bSchristos des_set_key_unchecked(&desp->des_key,ks);
69*c9496f6bSchristos enc=(desp->des_dir == ENCRYPT)?DES_ENCRYPT:DES_DECRYPT;
70*c9496f6bSchristos
71*c9496f6bSchristos if (desp->des_mode == CBC)
72*c9496f6bSchristos des_ecb_encrypt((const_des_cblock *)desp->UDES.UDES_buf,
73*c9496f6bSchristos (des_cblock *)desp->UDES.UDES_buf,ks,
74*c9496f6bSchristos enc);
75*c9496f6bSchristos else
76*c9496f6bSchristos {
77*c9496f6bSchristos des_ncbc_encrypt(desp->UDES.UDES_buf,desp->UDES.UDES_buf,
78*c9496f6bSchristos len,ks,&desp->des_ivec,enc);
79*c9496f6bSchristos #ifdef undef
80*c9496f6bSchristos /* len will always be %8 if called from common_crypt
81*c9496f6bSchristos * in secure_rpc.
82*c9496f6bSchristos * Libdes's cbc encrypt does not copy back the iv,
83*c9496f6bSchristos * so we have to do it here. */
84*c9496f6bSchristos /* It does now :-) eay 20/09/95 */
85*c9496f6bSchristos
86*c9496f6bSchristos a=(char *)&(desp->UDES.UDES_buf[len-8]);
87*c9496f6bSchristos b=(char *)&(desp->des_ivec[0]);
88*c9496f6bSchristos
89*c9496f6bSchristos *(a++)= *(b++); *(a++)= *(b++);
90*c9496f6bSchristos *(a++)= *(b++); *(a++)= *(b++);
91*c9496f6bSchristos *(a++)= *(b++); *(a++)= *(b++);
92*c9496f6bSchristos *(a++)= *(b++); *(a++)= *(b++);
93*c9496f6bSchristos #endif
94*c9496f6bSchristos }
95*c9496f6bSchristos return(1);
96*c9496f6bSchristos }
97*c9496f6bSchristos
98