Import OpenSSL 1.1.0f

crypto/dh/dh_kdf.c

@@ -1,63 +1,24 @@
-/* crypto/dh/dh_kdf.c */
 /*
- * Written by Stephen Henson for the OpenSSL project.
- */
-/* ====================================================================
- * Copyright (c) 2013 The OpenSSL Project.  All rights reserved.
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * 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 above 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 acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
+ * 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 <e_os.h>
+
+#ifndef OPENSSL_NO_CMS
 #include <string.h>
 #include <openssl/dh.h>
 #include <openssl/evp.h>
 #include <openssl/asn1.h>
 #include <openssl/cms.h>
 
+
 /* Key derivation from X9.42/RFC2631 */
+/* Uses CMS functions, hence the #ifdef wrapper. */
 
 #define DH_KDF_MAX      (1L << 30)
 
@@ -139,7 +100,7 @@ int DH_KDF_X9_42(unsigned char *out, size_t outlen,
                  ASN1_OBJECT *key_oid,
                  const unsigned char *ukm, size_t ukmlen, const EVP_MD *md)
 {
-    EVP_MD_CTX mctx;
+    EVP_MD_CTX *mctx = NULL;
     int rv = 0;
     unsigned int i;
     size_t mdlen;
@@ -147,31 +108,33 @@ int DH_KDF_X9_42(unsigned char *out, size_t outlen,
     int derlen;
     if (Zlen > DH_KDF_MAX)
         return 0;
+    mctx = EVP_MD_CTX_new();
+    if (mctx == NULL)
+        return 0;
     mdlen = EVP_MD_size(md);
-    EVP_MD_CTX_init(&mctx);
     derlen = dh_sharedinfo_encode(&der, &ctr, key_oid, outlen, ukm, ukmlen);
     if (derlen == 0)
         goto err;
     for (i = 1;; i++) {
         unsigned char mtmp[EVP_MAX_MD_SIZE];
-        EVP_DigestInit_ex(&mctx, md, NULL);
-        if (!EVP_DigestUpdate(&mctx, Z, Zlen))
+        if (!EVP_DigestInit_ex(mctx, md, NULL)
+            || !EVP_DigestUpdate(mctx, Z, Zlen))
             goto err;
         ctr[3] = i & 0xFF;
         ctr[2] = (i >> 8) & 0xFF;
         ctr[1] = (i >> 16) & 0xFF;
         ctr[0] = (i >> 24) & 0xFF;
-        if (!EVP_DigestUpdate(&mctx, der, derlen))
+        if (!EVP_DigestUpdate(mctx, der, derlen))
             goto err;
         if (outlen >= mdlen) {
-            if (!EVP_DigestFinal(&mctx, out, NULL))
+            if (!EVP_DigestFinal(mctx, out, NULL))
                 goto err;
             outlen -= mdlen;
             if (outlen == 0)
                 break;
             out += mdlen;
         } else {
-            if (!EVP_DigestFinal(&mctx, mtmp, NULL))
+            if (!EVP_DigestFinal(mctx, mtmp, NULL))
                 goto err;
             memcpy(out, mtmp, outlen);
             OPENSSL_cleanse(mtmp, mdlen);
@@ -180,8 +143,8 @@ int DH_KDF_X9_42(unsigned char *out, size_t outlen,
     }
     rv = 1;
  err:
-    if (der)
-        OPENSSL_free(der);
-    EVP_MD_CTX_cleanup(&mctx);
+    OPENSSL_free(der);
+    EVP_MD_CTX_free(mctx);
     return rv;
 }
+#endif