Import OpenSSL 1.1.0f

2017-09-07 16:27:43 -07:00
parent ccd3ab4aff
commit f4b81cb7c9
3340 changed files with 325158 additions and 557542 deletions
--- a/crypto/dh/dh_lib.c
+++ b/crypto/dh/dh_lib.c
@@ -1,74 +1,17 @@
-/* crypto/dh/dh_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 "cryptlib.h"
+#include "internal/cryptlib.h"
 #include <openssl/bn.h>
-#include <openssl/dh.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
-
-#ifdef OPENSSL_FIPS
-# include <openssl/fips.h>
-#endif
-
-const char DH_version[] = "Diffie-Hellman" OPENSSL_VERSION_PTEXT;
+#include "dh_locl.h"
+#include <openssl/engine.h>

 static const DH_METHOD *default_DH_method = NULL;

@@ -79,16 +22,8 @@ void DH_set_default_method(const DH_METHOD *meth)

 const DH_METHOD *DH_get_default_method(void)
 {
-    if (!default_DH_method) {
-#ifdef OPENSSL_FIPS
-        if (FIPS_mode())
-            return FIPS_dh_openssl();
-        else
-            return DH_OpenSSL();
-#else
+    if (!default_DH_method)
        default_DH_method = DH_OpenSSL();
-#endif
-    }
    return default_DH_method;
 }

@@ -103,10 +38,8 @@ int DH_set_method(DH *dh, const DH_METHOD *meth)
    if (mtmp->finish)
        mtmp->finish(dh);
 #ifndef OPENSSL_NO_ENGINE
-    if (dh->engine) {
-        ENGINE_finish(dh->engine);
-        dh->engine = NULL;
-    }
+    ENGINE_finish(dh->engine);
+    dh->engine = NULL;
 #endif
    dh->meth = meth;
    if (meth->init)
@@ -121,130 +54,100 @@ DH *DH_new(void)

 DH *DH_new_method(ENGINE *engine)
 {
-    DH *ret;
+    DH *ret = OPENSSL_zalloc(sizeof(*ret));

-    ret = (DH *)OPENSSL_malloc(sizeof(DH));
    if (ret == NULL) {
        DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
-        return (NULL);
+        return NULL;
+    }
+
+    ret->references = 1;
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL) {
+        DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(ret);
+        return NULL;
    }

    ret->meth = DH_get_default_method();
 #ifndef OPENSSL_NO_ENGINE
+    ret->flags = ret->meth->flags;  /* early default init */
    if (engine) {
        if (!ENGINE_init(engine)) {
            DHerr(DH_F_DH_NEW_METHOD, ERR_R_ENGINE_LIB);
-            OPENSSL_free(ret);
-            return NULL;
+            goto err;
        }
        ret->engine = engine;
    } else
        ret->engine = ENGINE_get_default_DH();
    if (ret->engine) {
        ret->meth = ENGINE_get_DH(ret->engine);
-        if (!ret->meth) {
+        if (ret->meth == NULL) {
            DHerr(DH_F_DH_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->p = NULL;
-    ret->g = NULL;
-    ret->length = 0;
-    ret->pub_key = NULL;
-    ret->priv_key = NULL;
-    ret->q = NULL;
-    ret->j = NULL;
-    ret->seed = NULL;
-    ret->seedlen = 0;
-    ret->counter = NULL;
-    ret->method_mont_p = NULL;
-    ret->references = 1;
-    ret->flags = ret->meth->flags & ~DH_FLAG_NON_FIPS_ALLOW;
-    CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
+    ret->flags = ret->meth->flags;
+
+    if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data))
+        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_DH, ret, &ret->ex_data);
-        OPENSSL_free(ret);
+        DHerr(DH_F_DH_NEW_METHOD, ERR_R_INIT_FAIL);
+err:
+        DH_free(ret);
        ret = NULL;
    }
-    return (ret);
+
+    return ret;
 }

 void DH_free(DH *r)
 {
    int i;
+
    if (r == NULL)
        return;
-    i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
-#ifdef REF_PRINT
-    REF_PRINT("DH", r);
-#endif
+
+    CRYPTO_atomic_add(&r->references, -1, &i, r->lock);
+    REF_PRINT_COUNT("DH", r);
    if (i > 0)
        return;
-#ifdef REF_CHECK
-    if (i < 0) {
-        fprintf(stderr, "DH_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_DH, r, &r->ex_data);

-    if (r->p != NULL)
-        BN_clear_free(r->p);
-    if (r->g != NULL)
-        BN_clear_free(r->g);
-    if (r->q != NULL)
-        BN_clear_free(r->q);
-    if (r->j != NULL)
-        BN_clear_free(r->j);
-    if (r->seed)
-        OPENSSL_free(r->seed);
-    if (r->counter != NULL)
-        BN_clear_free(r->counter);
-    if (r->pub_key != NULL)
-        BN_clear_free(r->pub_key);
-    if (r->priv_key != NULL)
-        BN_clear_free(r->priv_key);
+    CRYPTO_THREAD_lock_free(r->lock);
+
+    BN_clear_free(r->p);
+    BN_clear_free(r->g);
+    BN_clear_free(r->q);
+    BN_clear_free(r->j);
+    OPENSSL_free(r->seed);
+    BN_clear_free(r->counter);
+    BN_clear_free(r->pub_key);
+    BN_clear_free(r->priv_key);
    OPENSSL_free(r);
 }

 int DH_up_ref(DH *r)
 {
-    int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);
-#ifdef REF_PRINT
-    REF_PRINT("DH", r);
-#endif
-#ifdef REF_CHECK
-    if (i < 2) {
-        fprintf(stderr, "DH_up, bad reference count\n");
-        abort();
-    }
-#endif
-    return ((i > 1) ? 1 : 0);
-}
+    int i;

-int DH_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_DH, argl, argp,
-                                   new_func, dup_func, free_func);
+    if (CRYPTO_atomic_add(&r->references, 1, &i, r->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("DH", r);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
 }

 int DH_set_ex_data(DH *d, int idx, void *arg)
@@ -257,7 +160,125 @@ void *DH_get_ex_data(DH *d, int idx)
    return (CRYPTO_get_ex_data(&d->ex_data, idx));
 }

+int DH_bits(const DH *dh)
+{
+    return BN_num_bits(dh->p);
+}
+
 int DH_size(const DH *dh)
 {
    return (BN_num_bytes(dh->p));
 }
+
+int DH_security_bits(const DH *dh)
+{
+    int N;
+    if (dh->q)
+        N = BN_num_bits(dh->q);
+    else if (dh->length)
+        N = dh->length;
+    else
+        N = -1;
+    return BN_security_bits(BN_num_bits(dh->p), N);
+}
+
+
+void DH_get0_pqg(const DH *dh,
+                 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+{
+    if (p != NULL)
+        *p = dh->p;
+    if (q != NULL)
+        *q = dh->q;
+    if (g != NULL)
+        *g = dh->g;
+}
+
+int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+{
+    /* If the fields p and g in d are NULL, the corresponding input
+     * parameters MUST be non-NULL.  q may remain NULL.
+     */
+    if ((dh->p == NULL && p == NULL)
+        || (dh->g == NULL && g == NULL))
+        return 0;
+
+    if (p != NULL) {
+        BN_free(dh->p);
+        dh->p = p;
+    }
+    if (q != NULL) {
+        BN_free(dh->q);
+        dh->q = q;
+    }
+    if (g != NULL) {
+        BN_free(dh->g);
+        dh->g = g;
+    }
+
+    if (q != NULL) {
+        dh->length = BN_num_bits(q);
+    }
+
+    return 1;
+}
+
+long DH_get_length(const DH *dh)
+{
+    return dh->length;
+}
+
+int DH_set_length(DH *dh, long length)
+{
+    dh->length = length;
+    return 1;
+}
+
+void DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
+{
+    if (pub_key != NULL)
+        *pub_key = dh->pub_key;
+    if (priv_key != NULL)
+        *priv_key = dh->priv_key;
+}
+
+int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
+{
+    /* If the field pub_key in dh is NULL, the corresponding input
+     * parameters MUST be non-NULL.  The priv_key field may
+     * be left NULL.
+     */
+    if (dh->pub_key == NULL && pub_key == NULL)
+        return 0;
+
+    if (pub_key != NULL) {
+        BN_free(dh->pub_key);
+        dh->pub_key = pub_key;
+    }
+    if (priv_key != NULL) {
+        BN_free(dh->priv_key);
+        dh->priv_key = priv_key;
+    }
+
+    return 1;
+}
+
+void DH_clear_flags(DH *dh, int flags)
+{
+    dh->flags &= ~flags;
+}
+
+int DH_test_flags(const DH *dh, int flags)
+{
+    return dh->flags & flags;
+}
+
+void DH_set_flags(DH *dh, int flags)
+{
+    dh->flags |= flags;
+}
+
+ENGINE *DH_get0_engine(DH *dh)
+{
+    return dh->engine;
+}