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diff --git a/core/lib/libtomcrypt/src/misc/mem_neq.c b/core/lib/libtomcrypt/src/misc/mem_neq.c
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+++ b/core/lib/libtomcrypt/src/misc/mem_neq.c
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+/*
+ * Copyright (c) 2001-2007, Tom St Denis
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+ */
+
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ */
+#include "tomcrypt.h"
+
+/**
+   @file mem_neq.c
+   Compare two blocks of memory for inequality.
+   Steffen Jaeckel
+*/
+
+/**
+   Compare two blocks of memory for inequality.
+
+   The usage is similar to that of standard memcmp(), but you can only test
+   if the memory is equal or not - you can not determine by how much the
+   first different byte differs.
+
+   @param a     The first memory region
+   @param b     The second memory region
+   @param len   The length of the area to compare (octets)
+
+   @return 0 when a and b are equal for len bytes, else they are not equal.
+*/
+int mem_neq(const void *a, const void *b, size_t len)
+{
+   unsigned char ret = 0;
+   const unsigned char* pa;
+   const unsigned char* pb;
+
+   LTC_ARGCHK(a != NULL);
+   LTC_ARGCHK(b != NULL);
+
+   pa = a;
+   pb = b;
+
+   while (len-- > 0) {
+      ret |= *pa ^ *pb;
+      ++pa;
+      ++pb;
+   }
+
+   ret |= ret >> 4;
+   ret |= ret >> 2;
+   ret |= ret >> 1;
+   ret &= 1;
+
+   return ret;
+}
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */