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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 "bn.h"
72#include "rsa.h"
73#include "rand.h"
74
75#ifndef NOPROTO
76static int RSA_eay_public_encrypt(int flen, unsigned char *from,
77 unsigned char *to, RSA *rsa,int padding);
78static int RSA_eay_private_encrypt(int flen, unsigned char *from,
79 unsigned char *to, RSA *rsa,int padding);
80static int RSA_eay_public_decrypt(int flen, unsigned char *from,
81 unsigned char *to, RSA *rsa,int padding);
82static int RSA_eay_private_decrypt(int flen, unsigned char *from,
83 unsigned char *to, RSA *rsa,int padding);
84static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *i, RSA *rsa);
85static int RSA_eay_init(RSA *rsa);
86static int RSA_eay_finish(RSA *rsa);
87#else
88static int RSA_eay_public_encrypt();
89static int RSA_eay_private_encrypt();
90static int RSA_eay_public_decrypt();
91static int RSA_eay_private_decrypt();
92static int RSA_eay_mod_exp();
93static int RSA_eay_init();
94static int RSA_eay_finish();
95#endif
96
97static RSA_METHOD rsa_pkcs1_eay_meth={
98 "Eric Young's PKCS#1 RSA",
99 RSA_eay_public_encrypt,
100 RSA_eay_public_decrypt,
101 RSA_eay_private_encrypt,
102 RSA_eay_private_decrypt,
103 RSA_eay_mod_exp,
104 BN_mod_exp_mont,
105 RSA_eay_init,
106 RSA_eay_finish,
107 0,
108 NULL,
109 };
110
111RSA_METHOD *RSA_PKCS1_SSLeay()
112 {
113 return(&rsa_pkcs1_eay_meth);
114 }
115
116static int RSA_eay_public_encrypt(flen, from, to, rsa, padding)
117int flen;
118unsigned char *from;
119unsigned char *to;
120RSA *rsa;
121int padding;
122 {
123 BIGNUM *f=NULL,*ret=NULL;
124 int i,j,k,num=0,r= -1;
125 unsigned char *buf=NULL;
126 BN_CTX *ctx=NULL;
127
128 /* Body of this routine removed for OpenBSD - will return
129 * when the RSA patent expires
130 */
131
132err:
133 if (ctx != NULL) BN_CTX_free(ctx);
134 if (f != NULL) BN_free(f);
135 if (ret != NULL) BN_free(ret);
136 if (buf != NULL)
137 {
138 memset(buf,0,num);
139 Free(buf);
140 }
141 return(r);
142 }
143
144static int RSA_eay_private_encrypt(flen, from, to, rsa, padding)
145int flen;
146unsigned char *from;
147unsigned char *to;
148RSA *rsa;
149int padding;
150 {
151 BIGNUM *f=NULL,*ret=NULL;
152 int i,j,k,num=0,r= -1;
153 unsigned char *buf=NULL;
154 BN_CTX *ctx=NULL;
155
156 /* Body of this routine removed for OpenBSD - will return
157 * when the RSA patent expires
158 */
159
160err:
161 if (ctx != NULL) BN_CTX_free(ctx);
162 if (ret != NULL) BN_free(ret);
163 if (f != NULL) BN_free(f);
164 if (buf != NULL)
165 {
166 memset(buf,0,num);
167 Free(buf);
168 }
169 return(r);
170 }
171
172static int RSA_eay_private_decrypt(flen, from, to, rsa,padding)
173int flen;
174unsigned char *from;
175unsigned char *to;
176RSA *rsa;
177int padding;
178 {
179 BIGNUM *f=NULL,*ret=NULL;
180 int j,num=0,r= -1;
181 unsigned char *p;
182 unsigned char *buf=NULL;
183 BN_CTX *ctx=NULL;
184
185 /* Body of this routine removed for OpenBSD - will return
186 * when the RSA patent expires
187 */
188
189err:
190 if (ctx != NULL) BN_CTX_free(ctx);
191 if (f != NULL) BN_free(f);
192 if (ret != NULL) BN_free(ret);
193 if (buf != NULL)
194 {
195 memset(buf,0,num);
196 Free(buf);
197 }
198 return(r);
199 }
200
201static int RSA_eay_public_decrypt(flen, from, to, rsa, padding)
202int flen;
203unsigned char *from;
204unsigned char *to;
205RSA *rsa;
206int padding;
207 {
208 BIGNUM *f=NULL,*ret=NULL;
209 int i,num=0,r= -1;
210 unsigned char *p;
211 unsigned char *buf=NULL;
212 BN_CTX *ctx=NULL;
213
214
215 /* Body of this routine removed for OpenBSD - will return
216 * when the RSA patent expires
217 */
218
219err:
220 if (ctx != NULL) BN_CTX_free(ctx);
221 if (f != NULL) BN_free(f);
222 if (ret != NULL) BN_free(ret);
223 if (buf != NULL)
224 {
225 memset(buf,0,num);
226 Free(buf);
227 }
228 return(r);
229 }
230
231static int RSA_eay_mod_exp(r0, I, rsa)
232BIGNUM *r0;
233BIGNUM *I;
234RSA *rsa;
235 {
236 BIGNUM *r1=NULL,*m1=NULL;
237 int ret=0;
238 BN_CTX *ctx;
239
240 if ((ctx=BN_CTX_new()) == NULL) goto err;
241 m1=BN_new();
242 r1=BN_new();
243 if ((m1 == NULL) || (r1 == NULL)) goto err;
244
245 /* Body of this routine removed for OpenBSD - will return
246 * when the RSA patent expires
247 */
248err:
249 if (m1 != NULL) BN_free(m1);
250 if (r1 != NULL) BN_free(r1);
251 BN_CTX_free(ctx);
252 return(ret);
253 }
254
255static int RSA_eay_init(rsa)
256RSA *rsa;
257 {
258 rsa->flags|=RSA_FLAG_CACHE_PUBLIC|RSA_FLAG_CACHE_PRIVATE;
259 return(1);
260 }
261
262static int RSA_eay_finish(rsa)
263RSA *rsa;
264 {
265 if (rsa->method_mod_n != NULL)
266 BN_MONT_CTX_free((BN_MONT_CTX *)rsa->method_mod_n);
267 if (rsa->method_mod_p != NULL)
268 BN_MONT_CTX_free((BN_MONT_CTX *)rsa->method_mod_p);
269 if (rsa->method_mod_q != NULL)
270 BN_MONT_CTX_free((BN_MONT_CTX *)rsa->method_mod_q);
271 return(1);
272 }
273
274
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