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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
4 | * This package is an SSL implementation written | |
5 | * by Eric Young (eay@cryptsoft.com). | |
6 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 7 | * |
d02b48c6 RE |
8 | * This library is free for commercial and non-commercial use as long as |
9 | * the following conditions are aheared to. The following conditions | |
10 | * apply to all code found in this distribution, be it the RC4, RSA, | |
11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
12 | * included with this distribution is covered by the same copyright terms | |
13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 14 | * |
d02b48c6 RE |
15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
16 | * the code are not to be removed. | |
17 | * If this package is used in a product, Eric Young should be given attribution | |
18 | * as the author of the parts of the library used. | |
19 | * This can be in the form of a textual message at program startup or | |
20 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 21 | * |
d02b48c6 RE |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * 1. Redistributions of source code must retain the copyright | |
26 | * notice, this list of conditions and the following disclaimer. | |
27 | * 2. Redistributions in binary form must reproduce the above copyright | |
28 | * notice, this list of conditions and the following disclaimer in the | |
29 | * documentation and/or other materials provided with the distribution. | |
30 | * 3. All advertising materials mentioning features or use of this software | |
31 | * must display the following acknowledgement: | |
32 | * "This product includes cryptographic software written by | |
33 | * Eric Young (eay@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
d02b48c6 RE |
52 | * The licence and distribution terms for any publically available version or |
53 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
54 | * copied and put under another distribution licence | |
55 | * [including the GNU Public Licence.] | |
56 | */ | |
57 | ||
58 | #include <stdio.h> | |
ec577822 | 59 | #include <openssl/crypto.h> |
b39fc560 | 60 | #include "internal/cryptlib.h" |
ec577822 | 61 | #include <openssl/lhash.h> |
18125f7f | 62 | #include "internal/bn_int.h" |
ec577822 | 63 | #include <openssl/rsa.h> |
721688c2 | 64 | #include <openssl/rand.h> |
0b13e9f0 | 65 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 66 | # include <openssl/engine.h> |
0b13e9f0 | 67 | #endif |
d02b48c6 | 68 | |
0f113f3e | 69 | static const RSA_METHOD *default_RSA_meth = NULL; |
d02b48c6 | 70 | |
6b691a5c | 71 | RSA *RSA_new(void) |
0f113f3e MC |
72 | { |
73 | RSA *r = RSA_new_method(NULL); | |
c554155b | 74 | |
0f113f3e MC |
75 | return r; |
76 | } | |
d02b48c6 | 77 | |
cb78486d | 78 | void RSA_set_default_method(const RSA_METHOD *meth) |
0f113f3e MC |
79 | { |
80 | default_RSA_meth = meth; | |
81 | } | |
d02b48c6 | 82 | |
cb78486d | 83 | const RSA_METHOD *RSA_get_default_method(void) |
0f113f3e MC |
84 | { |
85 | if (default_RSA_meth == NULL) { | |
deb4d50e | 86 | #ifdef RSA_NULL |
0f113f3e | 87 | default_RSA_meth = RSA_null_method(); |
deb4d50e | 88 | #else |
b0700d2c | 89 | default_RSA_meth = RSA_PKCS1_OpenSSL(); |
deb4d50e | 90 | #endif |
0f113f3e | 91 | } |
deb4d50e | 92 | |
0f113f3e MC |
93 | return default_RSA_meth; |
94 | } | |
ce8b2574 | 95 | |
29c1f061 | 96 | const RSA_METHOD *RSA_get_method(const RSA *rsa) |
0f113f3e MC |
97 | { |
98 | return rsa->meth; | |
99 | } | |
cb78486d GT |
100 | |
101 | int RSA_set_method(RSA *rsa, const RSA_METHOD *meth) | |
0f113f3e MC |
102 | { |
103 | /* | |
104 | * NB: The caller is specifically setting a method, so it's not up to us | |
105 | * to deal with which ENGINE it comes from. | |
106 | */ | |
107 | const RSA_METHOD *mtmp; | |
108 | mtmp = rsa->meth; | |
109 | if (mtmp->finish) | |
110 | mtmp->finish(rsa); | |
0b13e9f0 | 111 | #ifndef OPENSSL_NO_ENGINE |
7c96dbcd RS |
112 | ENGINE_finish(rsa->engine); |
113 | rsa->engine = NULL; | |
0b13e9f0 | 114 | #endif |
0f113f3e MC |
115 | rsa->meth = meth; |
116 | if (meth->init) | |
117 | meth->init(rsa); | |
118 | return 1; | |
119 | } | |
ce8b2574 | 120 | |
5270e702 | 121 | RSA *RSA_new_method(ENGINE *engine) |
0f113f3e MC |
122 | { |
123 | RSA *ret; | |
d02b48c6 | 124 | |
64b25758 | 125 | ret = OPENSSL_zalloc(sizeof(*ret)); |
0f113f3e MC |
126 | if (ret == NULL) { |
127 | RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE); | |
128 | return NULL; | |
129 | } | |
d02b48c6 | 130 | |
0f113f3e | 131 | ret->meth = RSA_get_default_method(); |
0b13e9f0 | 132 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
133 | if (engine) { |
134 | if (!ENGINE_init(engine)) { | |
135 | RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB); | |
136 | OPENSSL_free(ret); | |
137 | return NULL; | |
138 | } | |
139 | ret->engine = engine; | |
140 | } else | |
141 | ret->engine = ENGINE_get_default_RSA(); | |
142 | if (ret->engine) { | |
143 | ret->meth = ENGINE_get_RSA(ret->engine); | |
7c96dbcd | 144 | if (ret->meth == NULL) { |
0f113f3e MC |
145 | RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB); |
146 | ENGINE_finish(ret->engine); | |
147 | OPENSSL_free(ret); | |
148 | return NULL; | |
149 | } | |
150 | } | |
0b13e9f0 | 151 | #endif |
0c9de428 | 152 | |
0f113f3e | 153 | ret->references = 1; |
0f113f3e MC |
154 | ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; |
155 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) { | |
fdb2c6e4 | 156 | #ifndef OPENSSL_NO_ENGINE |
412bafdc | 157 | ENGINE_finish(ret->engine); |
fdb2c6e4 | 158 | #endif |
0f113f3e | 159 | OPENSSL_free(ret); |
d188a536 | 160 | return NULL; |
0f113f3e | 161 | } |
fdb2c6e4 | 162 | |
d188a536 AG |
163 | ret->lock = CRYPTO_THREAD_lock_new(); |
164 | if (ret->lock == NULL) { | |
0b13e9f0 | 165 | #ifndef OPENSSL_NO_ENGINE |
412bafdc | 166 | ENGINE_finish(ret->engine); |
0b13e9f0 | 167 | #endif |
0f113f3e MC |
168 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data); |
169 | OPENSSL_free(ret); | |
d188a536 AG |
170 | return NULL; |
171 | } | |
172 | ||
173 | if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { | |
174 | RSA_free(ret); | |
0f113f3e MC |
175 | ret = NULL; |
176 | } | |
d188a536 AG |
177 | |
178 | return ret; | |
0f113f3e | 179 | } |
d02b48c6 | 180 | |
6b691a5c | 181 | void RSA_free(RSA *r) |
0f113f3e MC |
182 | { |
183 | int i; | |
d02b48c6 | 184 | |
0f113f3e MC |
185 | if (r == NULL) |
186 | return; | |
d02b48c6 | 187 | |
d188a536 | 188 | CRYPTO_atomic_add(&r->references, -1, &i, r->lock); |
f3f1cf84 | 189 | REF_PRINT_COUNT("RSA", r); |
0f113f3e MC |
190 | if (i > 0) |
191 | return; | |
f3f1cf84 | 192 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 193 | |
0f113f3e MC |
194 | if (r->meth->finish) |
195 | r->meth->finish(r); | |
0b13e9f0 | 196 | #ifndef OPENSSL_NO_ENGINE |
412bafdc | 197 | ENGINE_finish(r->engine); |
0b13e9f0 | 198 | #endif |
d02b48c6 | 199 | |
0f113f3e | 200 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data); |
7abe8305 | 201 | |
d188a536 AG |
202 | CRYPTO_THREAD_lock_free(r->lock); |
203 | ||
23a1d5e9 RS |
204 | BN_clear_free(r->n); |
205 | BN_clear_free(r->e); | |
206 | BN_clear_free(r->d); | |
207 | BN_clear_free(r->p); | |
208 | BN_clear_free(r->q); | |
209 | BN_clear_free(r->dmp1); | |
210 | BN_clear_free(r->dmq1); | |
211 | BN_clear_free(r->iqmp); | |
212 | BN_BLINDING_free(r->blinding); | |
213 | BN_BLINDING_free(r->mt_blinding); | |
4c42ebd2 | 214 | OPENSSL_free(r->bignum_data); |
0f113f3e MC |
215 | OPENSSL_free(r); |
216 | } | |
d02b48c6 | 217 | |
6ac4e8bd | 218 | int RSA_up_ref(RSA *r) |
0f113f3e | 219 | { |
d188a536 AG |
220 | int i; |
221 | ||
222 | if (CRYPTO_atomic_add(&r->references, 1, &i, r->lock) <= 0) | |
223 | return 0; | |
f3f1cf84 RS |
224 | |
225 | REF_PRINT_COUNT("RSA", r); | |
226 | REF_ASSERT_ISNT(i < 2); | |
0f113f3e MC |
227 | return ((i > 1) ? 1 : 0); |
228 | } | |
5cbc2e8b | 229 | |
dd9d233e | 230 | int RSA_set_ex_data(RSA *r, int idx, void *arg) |
0f113f3e MC |
231 | { |
232 | return (CRYPTO_set_ex_data(&r->ex_data, idx, arg)); | |
233 | } | |
58964a49 | 234 | |
29c1f061 | 235 | void *RSA_get_ex_data(const RSA *r, int idx) |
0f113f3e MC |
236 | { |
237 | return (CRYPTO_get_ex_data(&r->ex_data, idx)); | |
238 | } | |
58964a49 | 239 | |
6b691a5c | 240 | int RSA_memory_lock(RSA *r) |
0f113f3e MC |
241 | { |
242 | int i, j, k, off; | |
243 | char *p; | |
244 | BIGNUM *bn, **t[6], *b; | |
245 | BN_ULONG *ul; | |
246 | ||
247 | if (r->d == NULL) | |
248 | return (1); | |
249 | t[0] = &r->d; | |
250 | t[1] = &r->p; | |
251 | t[2] = &r->q; | |
252 | t[3] = &r->dmp1; | |
253 | t[4] = &r->dmq1; | |
254 | t[5] = &r->iqmp; | |
255 | k = bn_sizeof_BIGNUM() * 6; | |
256 | off = k / sizeof(BN_ULONG) + 1; | |
257 | j = 1; | |
258 | for (i = 0; i < 6; i++) | |
259 | j += bn_get_top(*t[i]); | |
b51bce94 | 260 | if ((p = OPENSSL_malloc((off + j) * sizeof(*p))) == NULL) { |
0f113f3e MC |
261 | RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE); |
262 | return (0); | |
263 | } | |
16f8d4eb | 264 | memset(p, 0, sizeof(*p) * (off + j)); |
0f113f3e MC |
265 | bn = (BIGNUM *)p; |
266 | ul = (BN_ULONG *)&(p[off]); | |
267 | for (i = 0; i < 6; i++) { | |
268 | b = *(t[i]); | |
269 | *(t[i]) = bn_array_el(bn, i); | |
16f8d4eb RS |
270 | memcpy(bn_array_el(bn, i), b, bn_sizeof_BIGNUM()); |
271 | memcpy(ul, bn_get_words(b), sizeof(*ul) * bn_get_top(b)); | |
0f113f3e MC |
272 | bn_set_static_words(bn_array_el(bn, i), ul, bn_get_top(b)); |
273 | ul += bn_get_top(b); | |
274 | BN_clear_free(b); | |
275 | } | |
dfeab068 | 276 | |
0f113f3e MC |
277 | /* I should fix this so it can still be done */ |
278 | r->flags &= ~(RSA_FLAG_CACHE_PRIVATE | RSA_FLAG_CACHE_PUBLIC); | |
dfeab068 | 279 | |
0f113f3e MC |
280 | r->bignum_data = p; |
281 | return (1); | |
282 | } | |
2514fa79 DSH |
283 | |
284 | int RSA_security_bits(const RSA *rsa) | |
0f113f3e MC |
285 | { |
286 | return BN_security_bits(BN_num_bits(rsa->n), -1); | |
287 | } |