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Diffstat (limited to 'src/lib/libcrypto/rsa/rsa_chk.c')
-rw-r--r--src/lib/libcrypto/rsa/rsa_chk.c213
1 files changed, 0 insertions, 213 deletions
diff --git a/src/lib/libcrypto/rsa/rsa_chk.c b/src/lib/libcrypto/rsa/rsa_chk.c
deleted file mode 100644
index c247a8d80e..0000000000
--- a/src/lib/libcrypto/rsa/rsa_chk.c
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1/* $OpenBSD: rsa_chk.c,v 1.9 2014/07/10 07:43:11 jsing 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
55int
56RSA_check_key(const RSA *key)
57{
58 BIGNUM *i, *j, *k, *l, *m;
59 BN_CTX *ctx;
60 int r;
61 int ret = 1;
62
63 if (!key->p || !key->q || !key->n || !key->e || !key->d) {
64 RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_VALUE_MISSING);
65 return 0;
66 }
67
68 i = BN_new();
69 j = BN_new();
70 k = BN_new();
71 l = BN_new();
72 m = BN_new();
73 ctx = BN_CTX_new();
74 if (i == NULL || j == NULL || k == NULL || l == NULL || m == NULL ||
75 ctx == NULL) {
76 ret = -1;
77 RSAerr(RSA_F_RSA_CHECK_KEY, ERR_R_MALLOC_FAILURE);
78 goto err;
79 }
80
81 /* p prime? */
82 r = BN_is_prime_ex(key->p, BN_prime_checks, NULL, NULL);
83 if (r != 1) {
84 ret = r;
85 if (r != 0)
86 goto err;
87 RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_P_NOT_PRIME);
88 }
89
90 /* q prime? */
91 r = BN_is_prime_ex(key->q, BN_prime_checks, NULL, NULL);
92 if (r != 1) {
93 ret = r;
94 if (r != 0)
95 goto err;
96 RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_Q_NOT_PRIME);
97 }
98
99 /* n = p*q? */
100 r = BN_mul(i, key->p, key->q, ctx);
101 if (!r) {
102 ret = -1;
103 goto err;
104 }
105
106 if (BN_cmp(i, key->n) != 0) {
107 ret = 0;
108 RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_N_DOES_NOT_EQUAL_P_Q);
109 }
110
111 /* d*e = 1 mod lcm(p-1,q-1)? */
112
113 r = BN_sub(i, key->p, BN_value_one());
114 if (!r) {
115 ret = -1;
116 goto err;
117 }
118 r = BN_sub(j, key->q, BN_value_one());
119 if (!r) {
120 ret = -1;
121 goto err;
122 }
123
124 /* now compute k = lcm(i,j) */
125 r = BN_mul(l, i, j, ctx);
126 if (!r) {
127 ret = -1;
128 goto err;
129 }
130 r = BN_gcd(m, i, j, ctx);
131 if (!r) {
132 ret = -1;
133 goto err;
134 }
135 r = BN_div(k, NULL, l, m, ctx); /* remainder is 0 */
136 if (!r) {
137 ret = -1;
138 goto err;
139 }
140
141 r = BN_mod_mul(i, key->d, key->e, k, ctx);
142 if (!r) {
143 ret = -1;
144 goto err;
145 }
146
147 if (!BN_is_one(i)) {
148 ret = 0;
149 RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_D_E_NOT_CONGRUENT_TO_1);
150 }
151
152 if (key->dmp1 != NULL && key->dmq1 != NULL && key->iqmp != NULL) {
153 /* dmp1 = d mod (p-1)? */
154 r = BN_sub(i, key->p, BN_value_one());
155 if (!r) {
156 ret = -1;
157 goto err;
158 }
159
160 r = BN_mod(j, key->d, i, ctx);
161 if (!r) {
162 ret = -1;
163 goto err;
164 }
165
166 if (BN_cmp(j, key->dmp1) != 0) {
167 ret = 0;
168 RSAerr(RSA_F_RSA_CHECK_KEY,
169 RSA_R_DMP1_NOT_CONGRUENT_TO_D);
170 }
171
172 /* dmq1 = d mod (q-1)? */
173 r = BN_sub(i, key->q, BN_value_one());
174 if (!r) {
175 ret = -1;
176 goto err;
177 }
178
179 r = BN_mod(j, key->d, i, ctx);
180 if (!r) {
181 ret = -1;
182 goto err;
183 }
184
185 if (BN_cmp(j, key->dmq1) != 0) {
186 ret = 0;
187 RSAerr(RSA_F_RSA_CHECK_KEY,
188 RSA_R_DMQ1_NOT_CONGRUENT_TO_D);
189 }
190
191 /* iqmp = q^-1 mod p? */
192 if (!BN_mod_inverse(i, key->q, key->p, ctx)) {
193 ret = -1;
194 goto err;
195 }
196
197 if (BN_cmp(i, key->iqmp) != 0) {
198 ret = 0;
199 RSAerr(RSA_F_RSA_CHECK_KEY,
200 RSA_R_IQMP_NOT_INVERSE_OF_Q);
201 }
202 }
203
204err:
205 BN_free(i);
206 BN_free(j);
207 BN_free(k);
208 BN_free(l);
209 BN_free(m);
210 BN_CTX_free(ctx);
211
212 return (ret);
213}
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