Check a return value in the SRP code

[openssl.git] / crypto / bn / rsaz_exp.c

diff --git a/crypto/bn/rsaz_exp.c b/crypto/bn/rsaz_exp.c
index d85e612bf7b4fe8996d20c591a9e4863171312fc..2dbcb88ac3b06d90beee5f06dbcce91c840d7e57 100644 (file)
--- a/crypto/bn/rsaz_exp.c
+++ b/crypto/bn/rsaz_exp.c
@@ -1,44 +1,16 @@
-/*****************************************************************************
-*                                                                            *
-*  Copyright (c) 2012, Intel Corporation                                     *
-*                                                                            *
-*  All rights reserved.                                                      *
-*                                                                            *
-*  Redistribution and use in source and binary forms, with or without        *
-*  modification, are permitted provided that the following conditions are    *
-*  met:                                                                      *
-*                                                                            *
-*  *  Redistributions of source code must retain the above copyright         *
-*     notice, this list of conditions and the following disclaimer.          *
-*                                                                            *
-*  *  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.                                                          *
-*                                                                            *
-*  *  Neither the name of the Intel Corporation nor the names of its         *
-*     contributors may be used to endorse or promote products derived from   *
-*     this software without specific prior written permission.               *
-*                                                                            *
-*                                                                            *
-*  THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""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 INTEL CORPORATION 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      *
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-*                                                                            *
-******************************************************************************
-* Developers and authors:                                                    *
-* Shay Gueron (1, 2), and Vlad Krasnov (1)                                   *
-* (1) Intel Corporation, Israel Development Center, Haifa, Israel            *
-* (2) University of Haifa, Israel                                            *
-*****************************************************************************/
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2012, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (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
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ */
 
 #include <openssl/opensslconf.h>
 #include "rsaz_exp.h"
@@ -244,7 +216,7 @@ void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
 
         rsaz_1024_sqr_avx2(result, result, m, k0, 5);
 
-        wvalue = *((unsigned short *)&p_str[index / 8]);
+        wvalue = (p_str[(index / 8) + 1] << 8) | p_str[index / 8];
         wvalue = (wvalue >> (index % 8)) & 31;
         index -= 5;