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-rw-r--r--src/lib/libcrypto/rsa/rsa_chk.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/src/lib/libcrypto/rsa/rsa_chk.c b/src/lib/libcrypto/rsa/rsa_chk.c
deleted file mode 100644
index b7666e0fed..0000000000
--- a/src/lib/libcrypto/rsa/rsa_chk.c
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1/* $OpenBSD: rsa_chk.c,v 1.18 2023/07/08 12:26:45 beck Exp $ */
2/* ====================================================================
3 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 */
50
51#include <openssl/bn.h>
52#include <openssl/err.h>
53#include <openssl/rsa.h>
54
55#include "bn_local.h"
56#include "rsa_local.h"
57
58int
59RSA_check_key(const RSA *key)
60{
61 BIGNUM *i, *j, *k, *l, *m;
62 BN_CTX *ctx;
63 int r;
64 int ret = 1;
65
66 if (!key->p || !key->q || !key->n || !key->e || !key->d) {
67 RSAerror(RSA_R_VALUE_MISSING);
68 return 0;
69 }
70
71 i = BN_new();
72 j = BN_new();
73 k = BN_new();
74 l = BN_new();
75 m = BN_new();
76 ctx = BN_CTX_new();
77 if (i == NULL || j == NULL || k == NULL || l == NULL || m == NULL ||
78 ctx == NULL) {
79 ret = -1;
80 RSAerror(ERR_R_MALLOC_FAILURE);
81 goto err;
82 }
83
84 if (BN_is_one(key->e)) {
85 ret = 0;
86 RSAerror(RSA_R_BAD_E_VALUE);
87 }
88 if (!BN_is_odd(key->e)) {
89 ret = 0;
90 RSAerror(RSA_R_BAD_E_VALUE);
91 }
92
93 /* p prime? */
94 r = BN_is_prime_ex(key->p, BN_prime_checks, NULL, NULL);
95 if (r != 1) {
96 ret = r;
97 if (r != 0)
98 goto err;
99 RSAerror(RSA_R_P_NOT_PRIME);
100 }
101
102 /* q prime? */
103 r = BN_is_prime_ex(key->q, BN_prime_checks, NULL, NULL);
104 if (r != 1) {
105 ret = r;
106 if (r != 0)
107 goto err;
108 RSAerror(RSA_R_Q_NOT_PRIME);
109 }
110
111 /* n = p*q? */
112 r = BN_mul(i, key->p, key->q, ctx);
113 if (!r) {
114 ret = -1;
115 goto err;
116 }
117
118 if (BN_cmp(i, key->n) != 0) {
119 ret = 0;
120 RSAerror(RSA_R_N_DOES_NOT_EQUAL_P_Q);
121 }
122
123 /* d*e = 1 mod lcm(p-1,q-1)? */
124
125 r = BN_sub(i, key->p, BN_value_one());
126 if (!r) {
127 ret = -1;
128 goto err;
129 }
130 r = BN_sub(j, key->q, BN_value_one());
131 if (!r) {
132 ret = -1;
133 goto err;
134 }
135
136 /* now compute k = lcm(i,j) */
137 r = BN_mul(l, i, j, ctx);
138 if (!r) {
139 ret = -1;
140 goto err;
141 }
142 r = BN_gcd_ct(m, i, j, ctx);
143 if (!r) {
144 ret = -1;
145 goto err;
146 }
147 r = BN_div_ct(k, NULL, l, m, ctx); /* remainder is 0 */
148 if (!r) {
149 ret = -1;
150 goto err;
151 }
152
153 r = BN_mod_mul(i, key->d, key->e, k, ctx);
154 if (!r) {
155 ret = -1;
156 goto err;
157 }
158
159 if (!BN_is_one(i)) {
160 ret = 0;
161 RSAerror(RSA_R_D_E_NOT_CONGRUENT_TO_1);
162 }
163
164 if (key->dmp1 != NULL && key->dmq1 != NULL && key->iqmp != NULL) {
165 /* dmp1 = d mod (p-1)? */
166 r = BN_sub(i, key->p, BN_value_one());
167 if (!r) {
168 ret = -1;
169 goto err;
170 }
171
172 r = BN_mod_ct(j, key->d, i, ctx);
173 if (!r) {
174 ret = -1;
175 goto err;
176 }
177
178 if (BN_cmp(j, key->dmp1) != 0) {
179 ret = 0;
180 RSAerror(RSA_R_DMP1_NOT_CONGRUENT_TO_D);
181 }
182
183 /* dmq1 = d mod (q-1)? */
184 r = BN_sub(i, key->q, BN_value_one());
185 if (!r) {
186 ret = -1;
187 goto err;
188 }
189
190 r = BN_mod_ct(j, key->d, i, ctx);
191 if (!r) {
192 ret = -1;
193 goto err;
194 }
195
196 if (BN_cmp(j, key->dmq1) != 0) {
197 ret = 0;
198 RSAerror(RSA_R_DMQ1_NOT_CONGRUENT_TO_D);
199 }
200
201 /* iqmp = q^-1 mod p? */
202 if (BN_mod_inverse_ct(i, key->q, key->p, ctx) == NULL) {
203 ret = -1;
204 goto err;
205 }
206
207 if (BN_cmp(i, key->iqmp) != 0) {
208 ret = 0;
209 RSAerror(RSA_R_IQMP_NOT_INVERSE_OF_Q);
210 }
211 }
212
213err:
214 BN_free(i);
215 BN_free(j);
216 BN_free(k);
217 BN_free(l);
218 BN_free(m);
219 BN_CTX_free(ctx);
220
221 return (ret);
222}
223LCRYPTO_ALIAS(RSA_check_key);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-23 15:11:09 +0000