In this column, let’s learn about hash functions as a prelude to learning about ways to save and compare passwords.

First, I’ll discuss hashing.

In the last column, we used the combination of the functions random_bytes() and [bin2hex|base64_encode]() to create tokens. What are tokens used for?

My name is Tadashi Yoshimasa. Japan is, of course, the homeland of Yukihiro Matsumoto, the creator of Ruby, and now Japan might just be the Ruby holy land.

Japan’s space program is led by the Japan Aerospace Exploration Agency (JAXA) and for some reason there is a video message on their website from Brian May, the guitarist of world-famous rock band Queen.

If You Use Linux, You Lose Out If You Can't Do This – Part 4

In the previous column, I explained Linux’s executable file format, ELF (Executable and Linkable Format).

When in Japan, Use Translation Tools Developed in Japan

The most useful language in Japan, other than Japanese, is certainly English.