In Linux/POSIX/UNIX programs, errors are reported by the operating system and C library with the errno variable. What's the portable and thread-safe way to deal with them in C++? If you are like me, and know Linux better than C++, the answer might not be obvious. But it is simple: throw an std::system_error exception of … Continue reading Handling errno in multi-threaded C++ code
RC4 is an obsolete cipher that was widely used just a decade ago, despite the fact that it has an exploitable statistical bias. This post shows how to compute the bias, using the neat modern C++ trick of parallel execution policies for the algorithms library, or for_each(std::execution::par). Complete code is available on GitHub. std::for_each() applies … Continue reading RC4 keystream bias, or parallel processing made easy with for_each/accumulate
Null Hypothesis 