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2013-10-05 Jay Berkenbilt <ejb@ql.org>
+ * Replace operator[] in std::string and std::vector with "at" in
+ order to get bounds checking. This reduces the chances that
+ incorrect code will result in data exposure or buffer overruns.
+ See README.hardening for additional notes.
+
* Use cryptographically secure random number generation when
available. See additional notes in README.