August 8th is Happy Hacking Day in Japan, because "Happy Hacking" sounds like 8 8.

This year, I put a speaker to FSM-55 so that we can enjoy some application.

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NeuG is an implementatio of True Random Number Generator, based on the sampling noise of ADCs (A/D converters).

It runs on STM32F103, and it outputs random bits at the rate of more than 80 kB/sec (kB = 1000-byte). The interface is USB, and it behaves as a device of …

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This was originally a story written to my imaginary/sworn(?) elder sister and her daughter in Singapore.

It began with "Hello, ..., It's long time since..."

NOTE: In this article, we discuss a possible side channel attack (of gniibe). Although we discuss the vulnerability by an …

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In my public key cryptography project, this is deadly needed: non-electrical manual computer^Wcalculator, so that I can manually compute digital signature.

Here is a figure to show the basic design of its register of 64-bit.

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It's 3-3 abacus. You may know that Japanese abacus adopts 1-4 system, while Chinese …

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