X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Frsa%2Frsa_lib.c;h=4f93cbcc4301c052016ffcc47fa3089014cce38c;hp=1430d5b0f303bbb0536fb2971db6fec4224b76c5;hb=11ed851db0c49f9fdd534fbd8a2791266f32c5b8;hpb=4b45c6e52b208deff7da333d1c7f84bcd3986609

diff --git a/crypto/rsa/rsa_lib.c b/crypto/rsa/rsa_lib.c
index 1430d5b0f3..4f93cbcc43 100644
--- a/crypto/rsa/rsa_lib.c
+++ b/crypto/rsa/rsa_lib.c
@@ -1,73 +1,20 @@
-/* crypto/rsa/rsa_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 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 "cryptlib.h"
+#include "internal/cryptlib.h"
 #include <openssl/lhash.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;
+#include <openssl/engine.h>
+#include "rsa_locl.h"
 
 static const RSA_METHOD *default_RSA_meth = NULL;
 
@@ -89,7 +36,7 @@ const RSA_METHOD *RSA_get_default_method(void)
 #ifdef RSA_NULL
         default_RSA_meth = RSA_null_method();
 #else
-        default_RSA_meth = RSA_PKCS1_SSLeay();
+        default_RSA_meth = RSA_PKCS1_OpenSSL();
 #endif
     }
 
@@ -112,10 +59,8 @@ int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
     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)
@@ -125,73 +70,56 @@ int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
 
 RSA *RSA_new_method(ENGINE *engine)
 {
-    RSA *ret;
+    RSA *ret = OPENSSL_zalloc(sizeof(*ret));
 
-    ret = OPENSSL_malloc(sizeof(RSA));
     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
         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)
@@ -201,72 +129,46 @@ 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_atomic_add(&r->references, -1, &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);
 
-    if (r->n != NULL)
-        BN_clear_free(r->n);
-    if (r->e != NULL)
-        BN_clear_free(r->e);
-    if (r->d != NULL)
-        BN_clear_free(r->d);
-    if (r->p != NULL)
-        BN_clear_free(r->p);
-    if (r->q != NULL)
-        BN_clear_free(r->q);
-    if (r->dmp1 != NULL)
-        BN_clear_free(r->dmp1);
-    if (r->dmq1 != NULL)
-        BN_clear_free(r->dmq1);
-    if (r->iqmp != NULL)
-        BN_clear_free(r->iqmp);
-    if (r->blinding != NULL)
-        BN_BLINDING_free(r->blinding);
-    if (r->mt_blinding != NULL)
-        BN_BLINDING_free(r->mt_blinding);
-    OPENSSL_free_locked(r->bignum_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->p);
+    BN_clear_free(r->q);
+    BN_clear_free(r->dmp1);
+    BN_clear_free(r->dmq1);
+    BN_clear_free(r->iqmp);
+    BN_BLINDING_free(r->blinding);
+    BN_BLINDING_free(r->mt_blinding);
+    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();
-    }
-#endif
-    return ((i > 1) ? 1 : 0);
-}
+    int i;
 
-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)
-{
-    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
-                                   new_func, dup_func, free_func);
+    if (CRYPTO_atomic_add(&r->references, 1, &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)
@@ -299,18 +201,18 @@ int RSA_memory_lock(RSA *r)
     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) {
+    if ((p = OPENSSL_malloc((off + j) * sizeof(*p))) == NULL) {
         RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE);
         return (0);
     }
-    memset(p, 0, (off + j) * sizeof(BN_ULONG));
+    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((char *)bn_array_el(bn, i), (char *)b, bn_sizeof_BIGNUM());
-        memcpy((char *)ul, bn_get_words(b), sizeof(BN_ULONG) * bn_get_top(b));
+        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);
@@ -327,3 +229,131 @@ int RSA_security_bits(const RSA *rsa)
 {
     return BN_security_bits(BN_num_bits(rsa->n), -1);
 }
+
+int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
+{
+    /* If the fields 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).
+     *
+     * It is an error to give the results from get0 on r
+     * as input parameters.
+     */
+    if (n == r->n || e == r->e
+        || (r->d != NULL && d == r->d))
+        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_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
+{
+    /* If the fields in r are NULL, the corresponding input
+     * parameters MUST be non-NULL.
+     *
+     * It is an error to give the results from get0 on r
+     * as input parameters.
+     */
+    if (p == r->p || q == r->q)
+        return 0;
+
+    if (p != NULL) {
+        BN_free(r->p);
+        r->p = p;
+    }
+    if (q != NULL) {
+        BN_free(r->q);
+        r->q = q;
+    }
+
+    return 1;
+}
+
+int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
+{
+    /* If the fields in r are NULL, the corresponding input
+     * parameters MUST be non-NULL.
+     *
+     * It is an error to give the results from get0 on r
+     * as input parameters.
+     */
+    if (dmp1 == r->dmp1 || dmq1 == r->dmq1 || iqmp == r->iqmp)
+        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;
+}
+
+void RSA_get0_key(const RSA *r, BIGNUM **n, BIGNUM **e, 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, BIGNUM **p, BIGNUM **q)
+{
+    if (p != NULL)
+        *p = r->p;
+    if (q != NULL)
+        *q = r->q;
+}
+
+void RSA_get0_crt_params(const RSA *r,
+                         BIGNUM **dmp1, BIGNUM **dmq1, BIGNUM **iqmp)
+{
+    if (dmp1 != NULL)
+        *dmp1 = r->dmp1;
+    if (dmq1 != NULL)
+        *dmq1 = r->dmq1;
+    if (iqmp != NULL)
+        *iqmp = r->iqmp;
+}
+
+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;
+}
+
+ENGINE *RSA_get0_engine(RSA *r)
+{
+    return r->engine;
+}