2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/crypto.h>
12 #include "internal/cryptlib.h"
13 #include <openssl/lhash.h>
14 #include "internal/bn_int.h"
15 #include <openssl/rand.h>
16 #include <openssl/engine.h>
19 static const RSA_METHOD *default_RSA_meth = NULL;
23 RSA *r = RSA_new_method(NULL);
28 void RSA_set_default_method(const RSA_METHOD *meth)
30 default_RSA_meth = meth;
33 const RSA_METHOD *RSA_get_default_method(void)
35 if (default_RSA_meth == NULL) {
37 default_RSA_meth = RSA_null_method();
39 default_RSA_meth = RSA_PKCS1_OpenSSL();
43 return default_RSA_meth;
46 const RSA_METHOD *RSA_get_method(const RSA *rsa)
51 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
54 * NB: The caller is specifically setting a method, so it's not up to us
55 * to deal with which ENGINE it comes from.
57 const RSA_METHOD *mtmp;
61 #ifndef OPENSSL_NO_ENGINE
62 ENGINE_finish(rsa->engine);
71 RSA *RSA_new_method(ENGINE *engine)
73 RSA *ret = OPENSSL_zalloc(sizeof(*ret));
76 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
81 ret->lock = CRYPTO_THREAD_lock_new();
82 if (ret->lock == NULL) {
83 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
88 ret->meth = RSA_get_default_method();
89 #ifndef OPENSSL_NO_ENGINE
90 ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
92 if (!ENGINE_init(engine)) {
93 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
98 ret->engine = ENGINE_get_default_RSA();
100 ret->meth = ENGINE_get_RSA(ret->engine);
101 if (ret->meth == NULL) {
102 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
108 ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
109 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) {
113 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
114 RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_INIT_FAIL);
125 void RSA_free(RSA *r)
132 CRYPTO_atomic_add(&r->references, -1, &i, r->lock);
133 REF_PRINT_COUNT("RSA", r);
136 REF_ASSERT_ISNT(i < 0);
140 #ifndef OPENSSL_NO_ENGINE
141 ENGINE_finish(r->engine);
144 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
146 CRYPTO_THREAD_lock_free(r->lock);
153 BN_clear_free(r->dmp1);
154 BN_clear_free(r->dmq1);
155 BN_clear_free(r->iqmp);
156 BN_BLINDING_free(r->blinding);
157 BN_BLINDING_free(r->mt_blinding);
158 OPENSSL_free(r->bignum_data);
162 int RSA_up_ref(RSA *r)
166 if (CRYPTO_atomic_add(&r->references, 1, &i, r->lock) <= 0)
169 REF_PRINT_COUNT("RSA", r);
170 REF_ASSERT_ISNT(i < 2);
171 return ((i > 1) ? 1 : 0);
174 int RSA_set_ex_data(RSA *r, int idx, void *arg)
176 return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
179 void *RSA_get_ex_data(const RSA *r, int idx)
181 return (CRYPTO_get_ex_data(&r->ex_data, idx));
184 int RSA_memory_lock(RSA *r)
188 BIGNUM *bn, **t[6], *b;
199 k = bn_sizeof_BIGNUM() * 6;
200 off = k / sizeof(BN_ULONG) + 1;
202 for (i = 0; i < 6; i++)
203 j += bn_get_top(*t[i]);
204 if ((p = OPENSSL_malloc((off + j) * sizeof(*p))) == NULL) {
205 RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE);
208 memset(p, 0, sizeof(*p) * (off + j));
210 ul = (BN_ULONG *)&(p[off]);
211 for (i = 0; i < 6; i++) {
213 *(t[i]) = bn_array_el(bn, i);
214 memcpy(bn_array_el(bn, i), b, bn_sizeof_BIGNUM());
215 memcpy(ul, bn_get_words(b), sizeof(*ul) * bn_get_top(b));
216 bn_set_static_words(bn_array_el(bn, i), ul, bn_get_top(b));
221 /* I should fix this so it can still be done */
222 r->flags &= ~(RSA_FLAG_CACHE_PRIVATE | RSA_FLAG_CACHE_PUBLIC);
228 int RSA_security_bits(const RSA *rsa)
230 return BN_security_bits(BN_num_bits(rsa->n), -1);
233 int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
235 /* If the fields n and e in r are NULL, the corresponding input
236 * parameters MUST be non-NULL for n and e. d may be
237 * left NULL (in case only the public key is used).
239 if ((r->n == NULL && n == NULL)
240 || (r->e == NULL && e == NULL))
259 int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
261 /* If the fields p and q in r are NULL, the corresponding input
262 * parameters MUST be non-NULL.
264 if ((r->p == NULL && p == NULL)
265 || (r->q == NULL && q == NULL))
280 int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
282 /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input
283 * parameters MUST be non-NULL.
285 if ((r->dmp1 == NULL && dmp1 == NULL)
286 || (r->dmq1 == NULL && dmq1 == NULL)
287 || (r->iqmp == NULL && iqmp == NULL))
306 void RSA_get0_key(const RSA *r,
307 const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
317 void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
325 void RSA_get0_crt_params(const RSA *r,
326 const BIGNUM **dmp1, const BIGNUM **dmq1,
337 void RSA_clear_flags(RSA *r, int flags)
342 int RSA_test_flags(const RSA *r, int flags)
344 return r->flags & flags;
347 void RSA_set_flags(RSA *r, int flags)
352 ENGINE *RSA_get0_engine(RSA *r)