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authorryker <>1998-10-05 20:13:14 +0000
committerryker <>1998-10-05 20:13:14 +0000
commitaeeae06a79815dc190061534d47236cec09f9e32 (patch)
tree851692b9c2f9c04f077666855641900f19fdb217 /src/lib/libcrypto/des/enc_writ.c
parenta4f79641824cbf9f60ca9d1168d1fcc46717a82a (diff)
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Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build
functionality for shared libs. Note that routines such as sslv2_init and friends that use RSA will not work due to lack of RSA in this library. Needs documentation and help from ports for easy upgrade to full functionality where legally possible.
Diffstat (limited to 'src/lib/libcrypto/des/enc_writ.c')
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diff --git a/src/lib/libcrypto/des/enc_writ.c b/src/lib/libcrypto/des/enc_writ.c
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1/* crypto/des/enc_writ.c */
2/* Copyright (C) 1995-1998 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 <errno.h>
60#include <time.h>
61#include "des_locl.h"
62
63int des_enc_write(fd, buf, len, sched, iv)
64int fd;
65char *buf;
66int len;
67des_key_schedule sched;
68des_cblock (*iv);
69 {
70#ifdef _LIBC
71 extern int srandom();
72 extern unsigned long time();
73 extern int random();
74 extern int write();
75#endif
76
77 long rnum;
78 int i,j,k,outnum;
79 static char *outbuf=NULL;
80 char shortbuf[8];
81 char *p;
82 static int start=1;
83
84 if (outbuf == NULL)
85 {
86 outbuf=(char *)malloc(BSIZE+HDRSIZE);
87 if (outbuf == NULL) return(-1);
88 }
89 /* If we are sending less than 8 bytes, the same char will look
90 * the same if we don't pad it out with random bytes */
91 if (start)
92 {
93 start=0;
94 srandom((unsigned int)time(NULL));
95 }
96
97 /* lets recurse if we want to send the data in small chunks */
98 if (len > MAXWRITE)
99 {
100 j=0;
101 for (i=0; i<len; i+=k)
102 {
103 k=des_enc_write(fd,&(buf[i]),
104 ((len-i) > MAXWRITE)?MAXWRITE:(len-i),sched,iv);
105 if (k < 0)
106 return(k);
107 else
108 j+=k;
109 }
110 return(j);
111 }
112
113 /* write length first */
114 p=outbuf;
115 l2n(len,p);
116
117 /* pad short strings */
118 if (len < 8)
119 {
120 p=shortbuf;
121 memcpy(shortbuf,buf,(unsigned int)len);
122 for (i=len; i<8; i++)
123 shortbuf[i]=random();
124 rnum=8;
125 }
126 else
127 {
128 p=buf;
129 rnum=((len+7)/8*8); /* round up to nearest eight */
130 }
131
132 if (des_rw_mode & DES_PCBC_MODE)
133 des_pcbc_encrypt((des_cblock *)p,
134 (des_cblock *)&(outbuf[HDRSIZE]),
135 (long)((len<8)?8:len),sched,iv,DES_ENCRYPT);
136 else
137 des_cbc_encrypt((des_cblock *)p,
138 (des_cblock *)&(outbuf[HDRSIZE]),
139 (long)((len<8)?8:len),sched,iv,DES_ENCRYPT);
140
141 /* output */
142 outnum=(int)rnum+HDRSIZE;
143
144 for (j=0; j<outnum; j+=i)
145 {
146 /* eay 26/08/92 I was not doing writing from where we
147 * got upto. */
148 i=write(fd,&(outbuf[j]),(unsigned int)(outnum-j));
149 if (i == -1)
150 {
151 if (errno == EINTR)
152 i=0;
153 else /* This is really a bad error - very bad
154 * It will stuff-up both ends. */
155 return(-1);
156 }
157 }
158
159 return(len);
160 }