-/* crypto/rsa/rsa_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/crypto.h>
#include "internal/cryptlib.h"
-#include <openssl/lhash.h>
+#include "internal/refcount.h"
#include "internal/bn_int.h"
-#include <openssl/rsa.h>
-#include <openssl/rand.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
-
-const char RSA_version[] = "RSA" OPENSSL_VERSION_PTEXT;
-
-static const RSA_METHOD *default_RSA_meth = NULL;
+#include <openssl/engine.h>
+#include <openssl/evp.h>
+#include "internal/evp_int.h"
+#include "rsa_locl.h"
RSA *RSA_new(void)
{
- RSA *r = RSA_new_method(NULL);
-
- return r;
-}
-
-void RSA_set_default_method(const RSA_METHOD *meth)
-{
- default_RSA_meth = meth;
-}
-
-const RSA_METHOD *RSA_get_default_method(void)
-{
- if (default_RSA_meth == NULL) {
-#ifdef RSA_NULL
- default_RSA_meth = RSA_null_method();
-#else
- default_RSA_meth = RSA_PKCS1_SSLeay();
-#endif
- }
-
- return default_RSA_meth;
+ return RSA_new_method(NULL);
}
const RSA_METHOD *RSA_get_method(const RSA *rsa)
if (mtmp->finish)
mtmp->finish(rsa);
#ifndef OPENSSL_NO_ENGINE
- if (rsa->engine) {
- ENGINE_finish(rsa->engine);
- rsa->engine = NULL;
- }
+ ENGINE_finish(rsa->engine);
+ rsa->engine = NULL;
#endif
rsa->meth = meth;
if (meth->init)
RSA *RSA_new_method(ENGINE *engine)
{
- RSA *ret;
+ RSA *ret = OPENSSL_zalloc(sizeof(*ret));
- ret = OPENSSL_malloc(sizeof(*ret));
if (ret == NULL) {
RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
return NULL;
}
+ ret->references = 1;
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+
ret->meth = RSA_get_default_method();
#ifndef OPENSSL_NO_ENGINE
+ ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
if (engine) {
if (!ENGINE_init(engine)) {
RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
- OPENSSL_free(ret);
- return NULL;
+ goto err;
}
ret->engine = engine;
- } else
+ } else {
ret->engine = ENGINE_get_default_RSA();
+ }
if (ret->engine) {
ret->meth = ENGINE_get_RSA(ret->engine);
- if (!ret->meth) {
+ if (ret->meth == NULL) {
RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
- ENGINE_finish(ret->engine);
- OPENSSL_free(ret);
- return NULL;
+ goto err;
}
}
#endif
- ret->pad = 0;
- ret->version = 0;
- ret->n = NULL;
- ret->e = NULL;
- ret->d = NULL;
- ret->p = NULL;
- ret->q = NULL;
- ret->dmp1 = NULL;
- ret->dmq1 = NULL;
- ret->iqmp = NULL;
- ret->references = 1;
- ret->_method_mod_n = NULL;
- ret->_method_mod_p = NULL;
- ret->_method_mod_q = NULL;
- ret->blinding = NULL;
- ret->mt_blinding = NULL;
- ret->bignum_data = NULL;
ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) {
-#ifndef OPENSSL_NO_ENGINE
- if (ret->engine)
- ENGINE_finish(ret->engine);
-#endif
- OPENSSL_free(ret);
- return (NULL);
+ goto err;
}
if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
-#ifndef OPENSSL_NO_ENGINE
- if (ret->engine)
- ENGINE_finish(ret->engine);
-#endif
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
- OPENSSL_free(ret);
- ret = NULL;
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_INIT_FAIL);
+ goto err;
}
- return (ret);
+
+ return ret;
+
+err:
+ RSA_free(ret);
+ return NULL;
}
void RSA_free(RSA *r)
if (r == NULL)
return;
- i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_RSA);
-#ifdef REF_PRINT
- REF_PRINT("RSA", r);
-#endif
+ CRYPTO_DOWN_REF(&r->references, &i, r->lock);
+ REF_PRINT_COUNT("RSA", r);
if (i > 0)
return;
-#ifdef REF_CHECK
- if (i < 0) {
- fprintf(stderr, "RSA_free, bad reference count\n");
- abort();
- }
-#endif
+ REF_ASSERT_ISNT(i < 0);
if (r->meth->finish)
r->meth->finish(r);
#ifndef OPENSSL_NO_ENGINE
- if (r->engine)
- ENGINE_finish(r->engine);
+ ENGINE_finish(r->engine);
#endif
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
+ CRYPTO_THREAD_lock_free(r->lock);
+
BN_clear_free(r->n);
BN_clear_free(r->e);
BN_clear_free(r->d);
BN_clear_free(r->dmp1);
BN_clear_free(r->dmq1);
BN_clear_free(r->iqmp);
+ RSA_PSS_PARAMS_free(r->pss);
+ sk_RSA_PRIME_INFO_pop_free(r->prime_infos, rsa_multip_info_free);
BN_BLINDING_free(r->blinding);
BN_BLINDING_free(r->mt_blinding);
- OPENSSL_free_locked(r->bignum_data);
+ OPENSSL_free(r->bignum_data);
OPENSSL_free(r);
}
int RSA_up_ref(RSA *r)
{
- int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
-#ifdef REF_PRINT
- REF_PRINT("RSA", r);
-#endif
-#ifdef REF_CHECK
- if (i < 2) {
- fprintf(stderr, "RSA_up_ref, bad reference count\n");
- abort();
+ int i;
+
+ if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("RSA", r);
+ REF_ASSERT_ISNT(i < 2);
+ return i > 1 ? 1 : 0;
+}
+
+int RSA_set_ex_data(RSA *r, int idx, void *arg)
+{
+ return CRYPTO_set_ex_data(&r->ex_data, idx, arg);
+}
+
+void *RSA_get_ex_data(const RSA *r, int idx)
+{
+ return CRYPTO_get_ex_data(&r->ex_data, idx);
+}
+
+int RSA_security_bits(const RSA *rsa)
+{
+ int bits = BN_num_bits(rsa->n);
+
+ if (rsa->version == RSA_ASN1_VERSION_MULTI) {
+ /* This ought to mean that we have private key at hand. */
+ int ex_primes = sk_RSA_PRIME_INFO_num(rsa->prime_infos);
+
+ if (ex_primes <= 0 || (ex_primes + 2) > rsa_multip_cap(bits))
+ return 0;
}
-#endif
- return ((i > 1) ? 1 : 0);
+ return BN_security_bits(bits, -1);
}
-int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
{
- return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
- new_func, dup_func, free_func);
+ /* If the fields n and e in r are NULL, the corresponding input
+ * parameters MUST be non-NULL for n and e. d may be
+ * left NULL (in case only the public key is used).
+ */
+ if ((r->n == NULL && n == NULL)
+ || (r->e == NULL && e == NULL))
+ return 0;
+
+ if (n != NULL) {
+ BN_free(r->n);
+ r->n = n;
+ }
+ if (e != NULL) {
+ BN_free(r->e);
+ r->e = e;
+ }
+ if (d != NULL) {
+ BN_free(r->d);
+ r->d = d;
+ }
+
+ return 1;
}
-int RSA_set_ex_data(RSA *r, int idx, void *arg)
+int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
{
- return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
+ /* If the fields p and q in r are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ */
+ if ((r->p == NULL && p == NULL)
+ || (r->q == NULL && q == NULL))
+ return 0;
+
+ if (p != NULL) {
+ BN_free(r->p);
+ r->p = p;
+ }
+ if (q != NULL) {
+ BN_free(r->q);
+ r->q = q;
+ }
+
+ return 1;
}
-void *RSA_get_ex_data(const RSA *r, int idx)
+int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
{
- return (CRYPTO_get_ex_data(&r->ex_data, idx));
+ /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ */
+ if ((r->dmp1 == NULL && dmp1 == NULL)
+ || (r->dmq1 == NULL && dmq1 == NULL)
+ || (r->iqmp == NULL && iqmp == NULL))
+ return 0;
+
+ if (dmp1 != NULL) {
+ BN_free(r->dmp1);
+ r->dmp1 = dmp1;
+ }
+ if (dmq1 != NULL) {
+ BN_free(r->dmq1);
+ r->dmq1 = dmq1;
+ }
+ if (iqmp != NULL) {
+ BN_free(r->iqmp);
+ r->iqmp = iqmp;
+ }
+
+ return 1;
}
-int RSA_memory_lock(RSA *r)
+/*
+ * Is it better to export RSA_PRIME_INFO structure
+ * and related functions to let user pass a triplet?
+ */
+int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[],
+ BIGNUM *coeffs[], int pnum)
{
- int i, j, k, off;
- char *p;
- BIGNUM *bn, **t[6], *b;
- BN_ULONG *ul;
-
- if (r->d == NULL)
- return (1);
- t[0] = &r->d;
- t[1] = &r->p;
- t[2] = &r->q;
- t[3] = &r->dmp1;
- t[4] = &r->dmq1;
- t[5] = &r->iqmp;
- k = bn_sizeof_BIGNUM() * 6;
- off = k / sizeof(BN_ULONG) + 1;
- j = 1;
- for (i = 0; i < 6; i++)
- j += bn_get_top(*t[i]);
- if ((p = OPENSSL_malloc_locked((off + j) * sizeof(BN_ULONG))) == NULL) {
- RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE);
- return (0);
+ STACK_OF(RSA_PRIME_INFO) *prime_infos, *old = NULL;
+ RSA_PRIME_INFO *pinfo;
+ int i;
+
+ if (primes == NULL || exps == NULL || coeffs == NULL || pnum == 0)
+ return 0;
+
+ prime_infos = sk_RSA_PRIME_INFO_new_reserve(NULL, pnum);
+ if (prime_infos == NULL)
+ return 0;
+
+ if (r->prime_infos != NULL)
+ old = r->prime_infos;
+
+ for (i = 0; i < pnum; i++) {
+ pinfo = rsa_multip_info_new();
+ if (pinfo == NULL)
+ goto err;
+ if (primes[i] != NULL && exps[i] != NULL && coeffs[i] != NULL) {
+ BN_free(pinfo->r);
+ BN_free(pinfo->d);
+ BN_free(pinfo->t);
+ pinfo->r = primes[i];
+ pinfo->d = exps[i];
+ pinfo->t = coeffs[i];
+ } else {
+ rsa_multip_info_free(pinfo);
+ goto err;
+ }
+ (void)sk_RSA_PRIME_INFO_push(prime_infos, pinfo);
+ }
+
+ r->prime_infos = prime_infos;
+
+ if (!rsa_multip_calc_product(r)) {
+ r->prime_infos = old;
+ goto err;
}
- memset(p, 0, sizeof(*p) * (off + j));
- bn = (BIGNUM *)p;
- ul = (BN_ULONG *)&(p[off]);
- for (i = 0; i < 6; i++) {
- b = *(t[i]);
- *(t[i]) = bn_array_el(bn, i);
- memcpy(bn_array_el(bn, i), b, bn_sizeof_BIGNUM());
- memcpy(ul, bn_get_words(b), sizeof(*ul) * bn_get_top(b));
- bn_set_static_words(bn_array_el(bn, i), ul, bn_get_top(b));
- ul += bn_get_top(b);
- BN_clear_free(b);
+
+ if (old != NULL) {
+ /*
+ * This is hard to deal with, since the old infos could
+ * also be set by this function and r, d, t should not
+ * be freed in that case. So currently, stay consistent
+ * with other *set0* functions: just free it...
+ */
+ sk_RSA_PRIME_INFO_pop_free(old, rsa_multip_info_free);
}
- /* I should fix this so it can still be done */
- r->flags &= ~(RSA_FLAG_CACHE_PRIVATE | RSA_FLAG_CACHE_PUBLIC);
+ r->version = RSA_ASN1_VERSION_MULTI;
- r->bignum_data = p;
- return (1);
+ return 1;
+ err:
+ /* r, d, t should not be freed */
+ sk_RSA_PRIME_INFO_pop_free(prime_infos, rsa_multip_info_free_ex);
+ return 0;
}
-int RSA_security_bits(const RSA *rsa)
+void RSA_get0_key(const RSA *r,
+ const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
+{
+ if (n != NULL)
+ *n = r->n;
+ if (e != NULL)
+ *e = r->e;
+ if (d != NULL)
+ *d = r->d;
+}
+
+void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
+{
+ if (p != NULL)
+ *p = r->p;
+ if (q != NULL)
+ *q = r->q;
+}
+
+int RSA_get_multi_prime_extra_count(const RSA *r)
+{
+ int pnum;
+
+ pnum = sk_RSA_PRIME_INFO_num(r->prime_infos);
+ if (pnum <= 0)
+ pnum = 0;
+ return pnum;
+}
+
+int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[])
+{
+ int pnum, i;
+ RSA_PRIME_INFO *pinfo;
+
+ if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0)
+ return 0;
+
+ /*
+ * return other primes
+ * it's caller's responsibility to allocate oth_primes[pnum]
+ */
+ for (i = 0; i < pnum; i++) {
+ pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i);
+ primes[i] = pinfo->r;
+ }
+
+ return 1;
+}
+
+void RSA_get0_crt_params(const RSA *r,
+ const BIGNUM **dmp1, const BIGNUM **dmq1,
+ const BIGNUM **iqmp)
+{
+ if (dmp1 != NULL)
+ *dmp1 = r->dmp1;
+ if (dmq1 != NULL)
+ *dmq1 = r->dmq1;
+ if (iqmp != NULL)
+ *iqmp = r->iqmp;
+}
+
+int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[],
+ const BIGNUM *coeffs[])
+{
+ int pnum;
+
+ if ((pnum = RSA_get_multi_prime_extra_count(r)) == 0)
+ return 0;
+
+ /* return other primes */
+ if (exps != NULL || coeffs != NULL) {
+ RSA_PRIME_INFO *pinfo;
+ int i;
+
+ /* it's the user's job to guarantee the buffer length */
+ for (i = 0; i < pnum; i++) {
+ pinfo = sk_RSA_PRIME_INFO_value(r->prime_infos, i);
+ if (exps != NULL)
+ exps[i] = pinfo->d;
+ if (coeffs != NULL)
+ coeffs[i] = pinfo->t;
+ }
+ }
+
+ return 1;
+}
+
+void RSA_clear_flags(RSA *r, int flags)
+{
+ r->flags &= ~flags;
+}
+
+int RSA_test_flags(const RSA *r, int flags)
+{
+ return r->flags & flags;
+}
+
+void RSA_set_flags(RSA *r, int flags)
+{
+ r->flags |= flags;
+}
+
+int RSA_get_version(RSA *r)
+{
+ /* { two-prime(0), multi(1) } */
+ return r->version;
+}
+
+ENGINE *RSA_get0_engine(const RSA *r)
+{
+ return r->engine;
+}
+
+int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2)
{
- return BN_security_bits(BN_num_bits(rsa->n), -1);
+ /* If key type not RSA or RSA-PSS return error */
+ if (ctx != NULL && ctx->pmeth != NULL
+ && ctx->pmeth->pkey_id != EVP_PKEY_RSA
+ && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
+ return -1;
+ return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, p1, p2);
}
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