1 /* crypto/rsa/rsa_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
60 #include <openssl/crypto.h>
62 #include <openssl/lhash.h>
63 #include <openssl/bn.h>
64 #include <openssl/rsa.h>
65 #include <openssl/rand.h>
66 #ifndef OPENSSL_NO_ENGINE
67 # include <openssl/engine.h>
71 # include <openssl/fips.h>
74 const char RSA_version[] = "RSA" OPENSSL_VERSION_PTEXT;
76 static const RSA_METHOD *default_RSA_meth = NULL;
80 RSA *r = RSA_new_method(NULL);
85 void RSA_set_default_method(const RSA_METHOD *meth)
87 default_RSA_meth = meth;
90 const RSA_METHOD *RSA_get_default_method(void)
92 if (default_RSA_meth == NULL) {
95 return FIPS_rsa_pkcs1_ssleay();
97 return RSA_PKCS1_SSLeay();
100 default_RSA_meth = RSA_null_method();
102 default_RSA_meth = RSA_PKCS1_SSLeay();
107 return default_RSA_meth;
110 const RSA_METHOD *RSA_get_method(const RSA *rsa)
115 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
118 * NB: The caller is specifically setting a method, so it's not up to us
119 * to deal with which ENGINE it comes from.
121 const RSA_METHOD *mtmp;
125 #ifndef OPENSSL_NO_ENGINE
127 ENGINE_finish(rsa->engine);
137 RSA *RSA_new_method(ENGINE *engine)
141 ret = (RSA *)OPENSSL_malloc(sizeof(RSA));
143 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
146 memset(ret,0,sizeof(RSA));
148 ret->meth = RSA_get_default_method();
149 #ifndef OPENSSL_NO_ENGINE
151 if (!ENGINE_init(engine)) {
152 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
156 ret->engine = engine;
158 ret->engine = ENGINE_get_default_RSA();
160 ret->meth = ENGINE_get_RSA(ret->engine);
162 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
163 ENGINE_finish(ret->engine);
181 ret->_method_mod_n = NULL;
182 ret->_method_mod_p = NULL;
183 ret->_method_mod_q = NULL;
184 ret->blinding = NULL;
185 ret->mt_blinding = NULL;
186 ret->bignum_data = NULL;
187 ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
188 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) {
189 #ifndef OPENSSL_NO_ENGINE
191 ENGINE_finish(ret->engine);
197 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
198 #ifndef OPENSSL_NO_ENGINE
200 ENGINE_finish(ret->engine);
202 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
209 void RSA_free(RSA *r)
216 i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_RSA);
224 fprintf(stderr, "RSA_free, bad reference count\n");
231 #ifndef OPENSSL_NO_ENGINE
233 ENGINE_finish(r->engine);
236 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
249 BN_clear_free(r->dmp1);
251 BN_clear_free(r->dmq1);
253 BN_clear_free(r->iqmp);
254 if (r->blinding != NULL)
255 BN_BLINDING_free(r->blinding);
256 if (r->mt_blinding != NULL)
257 BN_BLINDING_free(r->mt_blinding);
258 if (r->bignum_data != NULL)
259 OPENSSL_free_locked(r->bignum_data);
263 int RSA_up_ref(RSA *r)
265 int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
271 fprintf(stderr, "RSA_up_ref, bad reference count\n");
275 return ((i > 1) ? 1 : 0);
278 int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
279 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
281 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
282 new_func, dup_func, free_func);
285 int RSA_set_ex_data(RSA *r, int idx, void *arg)
287 return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
290 void *RSA_get_ex_data(const RSA *r, int idx)
292 return (CRYPTO_get_ex_data(&r->ex_data, idx));
295 int RSA_memory_lock(RSA *r)
299 BIGNUM *bn, **t[6], *b;
310 k = sizeof(BIGNUM) * 6;
311 off = k / sizeof(BN_ULONG) + 1;
313 for (i = 0; i < 6; i++)
315 if ((p = OPENSSL_malloc_locked((off + j) * sizeof(BN_ULONG))) == NULL) {
316 RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE);
320 ul = (BN_ULONG *)&(p[off]);
321 for (i = 0; i < 6; i++) {
324 memcpy((char *)&(bn[i]), (char *)b, sizeof(BIGNUM));
325 bn[i].flags = BN_FLG_STATIC_DATA;
327 memcpy((char *)ul, b->d, sizeof(BN_ULONG) * b->top);
332 /* I should fix this so it can still be done */
333 r->flags &= ~(RSA_FLAG_CACHE_PRIVATE | RSA_FLAG_CACHE_PUBLIC);