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authorcvs2svn <admin@example.com>2000-04-30 04:58:23 +0000
committercvs2svn <admin@example.com>2000-04-30 04:58:23 +0000
commit9cc1eacd8366faaa248a9aca9120fb7427c2a58e (patch)
tree9304b7a65ac1d9eeb42cdd518d69fd21eb2b47af /src/lib/libcrypto/rsa/rsa_eay.c
parente71289f71fad3f153975fd8fbf1f0f35dbda7f28 (diff)
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This commit was manufactured by cvs2git to create tag 'OPENBSD_2_7_BASE'.OPENBSD_2_7_BASE
Diffstat (limited to 'src/lib/libcrypto/rsa/rsa_eay.c')
-rw-r--r--src/lib/libcrypto/rsa/rsa_eay.c299
1 files changed, 0 insertions, 299 deletions
diff --git a/src/lib/libcrypto/rsa/rsa_eay.c b/src/lib/libcrypto/rsa/rsa_eay.c
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1
2/* This file has been explicitly broken by ryker for OpenBSD, July
3 * 1, 1998. In spite of the title, there is no implementation of the
4 * RSA algorithm left in this file. All these routines will return an
5 * error and fail when called. They exist as stubs and can be
6 * ressurected from the bit bucket by someone in the free world once
7 * the RSA algorithm is no longer subject to patent problems. Eric
8 * Young's original copyright is below.
9 */
10
11/* crypto/rsa/rsa_eay.c */
12/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
13 * All rights reserved.
14 *
15 * This package is an SSL implementation written
16 * by Eric Young (eay@cryptsoft.com).
17 * The implementation was written so as to conform with Netscapes SSL.
18 *
19 * This library is free for commercial and non-commercial use as long as
20 * the following conditions are aheared to. The following conditions
21 * apply to all code found in this distribution, be it the RC4, RSA,
22 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
23 * included with this distribution is covered by the same copyright terms
24 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
25 *
26 * Copyright remains Eric Young's, and as such any Copyright notices in
27 * the code are not to be removed.
28 * If this package is used in a product, Eric Young should be given attribution
29 * as the author of the parts of the library used.
30 * This can be in the form of a textual message at program startup or
31 * in documentation (online or textual) provided with the package.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * "This product includes cryptographic software written by
44 * Eric Young (eay@cryptsoft.com)"
45 * The word 'cryptographic' can be left out if the rouines from the library
46 * being used are not cryptographic related :-).
47 * 4. If you include any Windows specific code (or a derivative thereof) from
48 * the apps directory (application code) you must include an acknowledgement:
49 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
50 *
51 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 *
63 * The licence and distribution terms for any publically available version or
64 * derivative of this code cannot be changed. i.e. this code cannot simply be
65 * copied and put under another distribution licence
66 * [including the GNU Public Licence.]
67 */
68
69#include <stdio.h>
70#include "cryptlib.h"
71#include <openssl/bn.h>
72#include <openssl/rsa.h>
73#include <openssl/rand.h>
74
75#ifndef RSA_NULL
76
77static int RSA_eay_public_encrypt(int flen, unsigned char *from,
78 unsigned char *to, RSA *rsa,int padding);
79static int RSA_eay_private_encrypt(int flen, unsigned char *from,
80 unsigned char *to, RSA *rsa,int padding);
81static int RSA_eay_public_decrypt(int flen, unsigned char *from,
82 unsigned char *to, RSA *rsa,int padding);
83static int RSA_eay_private_decrypt(int flen, unsigned char *from,
84 unsigned char *to, RSA *rsa,int padding);
85static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *i, RSA *rsa);
86static int RSA_eay_init(RSA *rsa);
87static int RSA_eay_finish(RSA *rsa);
88static RSA_METHOD rsa_pkcs1_eay_meth={
89 "Eric Young's PKCS#1 RSA",
90 RSA_eay_public_encrypt,
91 RSA_eay_public_decrypt,
92 RSA_eay_private_encrypt,
93 RSA_eay_private_decrypt,
94 RSA_eay_mod_exp,
95 BN_mod_exp_mont,
96 RSA_eay_init,
97 RSA_eay_finish,
98 0,
99 NULL,
100 };
101
102RSA_METHOD *RSA_PKCS1_SSLeay(void)
103 {
104 return(&rsa_pkcs1_eay_meth);
105 }
106
107static int RSA_eay_public_encrypt(int flen, unsigned char *from,
108 unsigned char *to, RSA *rsa, int padding)
109 {
110 BIGNUM f,ret;
111 int i,j,k,num=0,r= -1;
112 unsigned char *buf=NULL;
113 BN_CTX *ctx=NULL;
114
115 BN_init(&f);
116 BN_init(&ret);
117 if ((ctx=BN_CTX_new()) == NULL) goto err;
118 num=BN_num_bytes(rsa->n);
119 if ((buf=(unsigned char *)Malloc(num)) == NULL)
120 {
121 RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,ERR_R_MALLOC_FAILURE);
122 goto err;
123 }
124
125 switch (padding)
126 {
127 case RSA_PKCS1_PADDING:
128 i=RSA_padding_add_PKCS1_type_2(buf,num,from,flen);
129 break;
130#ifndef NO_SHA
131 case RSA_PKCS1_OAEP_PADDING:
132 i=RSA_padding_add_PKCS1_OAEP(buf,num,from,flen,NULL,0);
133 break;
134#endif
135 case RSA_SSLV23_PADDING:
136 i=RSA_padding_add_SSLv23(buf,num,from,flen);
137 break;
138 case RSA_NO_PADDING:
139 i=RSA_padding_add_none(buf,num,from,flen);
140 break;
141 default:
142 RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_UNKNOWN_PADDING_TYPE);
143 goto err;
144 }
145 if (i <= 0) goto err;
146
147 if (BN_bin2bn(buf,num,&f) == NULL) goto err;
148
149 if ((rsa->_method_mod_n == NULL) && (rsa->flags & RSA_FLAG_CACHE_PUBLIC))
150 {
151 if ((rsa->_method_mod_n=BN_MONT_CTX_new()) != NULL)
152 if (!BN_MONT_CTX_set(rsa->_method_mod_n,rsa->n,ctx))
153 goto err;
154 }
155
156 if (!rsa->meth->bn_mod_exp(&ret,&f,rsa->e,rsa->n,ctx,
157 rsa->_method_mod_n)) goto err;
158
159 /* put in leading 0 bytes if the number is less than the
160 * length of the modulus */
161 j=BN_num_bytes(&ret);
162 i=BN_bn2bin(&ret,&(to[num-j]));
163 for (k=0; k<(num-i); k++)
164 to[k]=0;
165
166 r=num;
167err:
168 if (ctx != NULL) BN_CTX_free(ctx);
169 BN_clear_free(&f);
170 BN_clear_free(&ret);
171 if (buf != NULL)
172 {
173 memset(buf,0,num);
174 Free(buf);
175 }
176 return(r);
177 }
178
179static int RSA_eay_private_encrypt(int flen, unsigned char *from,
180 unsigned char *to, RSA *rsa, int padding)
181 {
182 BIGNUM f,ret;
183 int i,j,k,num=0,r= -1;
184 unsigned char *buf=NULL;
185 BN_CTX *ctx=NULL;
186
187 BN_init(&f);
188 BN_init(&ret);
189
190 /* Body of this routine removed for OpenBSD - will return
191 * when the RSA patent expires
192 */
193
194err:
195 if (ctx != NULL) BN_CTX_free(ctx);
196 BN_clear_free(&ret);
197 BN_clear_free(&f);
198 if (buf != NULL)
199 {
200 memset(buf,0,num);
201 Free(buf);
202 }
203 return(r);
204 }
205
206static int RSA_eay_private_decrypt(int flen, unsigned char *from,
207 unsigned char *to, RSA *rsa, int padding)
208 {
209 BIGNUM f,ret;
210 int j,num=0,r= -1;
211 unsigned char *p;
212 unsigned char *buf=NULL;
213 BN_CTX *ctx=NULL;
214
215 BN_init(&f);
216 BN_init(&ret);
217
218 /* Body of this routine removed for OpenBSD - will return
219 * when the RSA patent expires
220 */
221
222err:
223 if (ctx != NULL) BN_CTX_free(ctx);
224 BN_clear_free(&f);
225 BN_clear_free(&ret);
226 if (buf != NULL)
227 {
228 memset(buf,0,num);
229 Free(buf);
230 }
231 return(r);
232 }
233
234static int RSA_eay_public_decrypt(int flen, unsigned char *from,
235 unsigned char *to, RSA *rsa, int padding)
236 {
237 BIGNUM f,ret;
238 int i,num=0,r= -1;
239 unsigned char *p;
240 unsigned char *buf=NULL;
241 BN_CTX *ctx=NULL;
242
243 BN_init(&f);
244 BN_init(&ret);
245
246 /* Body of this routine removed for OpenBSD - will return
247 * when the RSA patent expires
248 */
249
250err:
251 if (ctx != NULL) BN_CTX_free(ctx);
252 BN_clear_free(&f);
253 BN_clear_free(&ret);
254 if (buf != NULL)
255 {
256 memset(buf,0,num);
257 Free(buf);
258 }
259 return(r);
260 }
261
262static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
263 {
264 BIGNUM r1,m1;
265 int ret=0;
266 BN_CTX *ctx = NULL;
267
268 BN_init(&m1);
269 BN_init(&r1);
270 if ((ctx=BN_CTX_new()) == NULL) goto err;
271
272 /* Body of this routine removed for OpenBSD - will return
273 * when the RSA patent expires
274 */
275err:
276 BN_clear_free(&m1);
277 BN_clear_free(&r1);
278 BN_CTX_free(ctx);
279 return(ret);
280 }
281
282static int RSA_eay_init(RSA *rsa)
283 {
284 rsa->flags|=RSA_FLAG_CACHE_PUBLIC|RSA_FLAG_CACHE_PRIVATE;
285 return(1);
286 }
287
288static int RSA_eay_finish(RSA *rsa)
289 {
290 if (rsa->_method_mod_n != NULL)
291 BN_MONT_CTX_free(rsa->_method_mod_n);
292 if (rsa->_method_mod_p != NULL)
293 BN_MONT_CTX_free(rsa->_method_mod_p);
294 if (rsa->_method_mod_q != NULL)
295 BN_MONT_CTX_free(rsa->_method_mod_q);
296 return(1);
297 }
298
299#endif
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