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 …

more »

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 …

more »

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.

+-----------------------------------------------+
|<> <> <> <> <> <> <> <> <> <> <> <> <> <> <> <>|
|<> <> <> <> <> <> <> <> <> <> <> <> <> <> <> <>|
|<> <> <> <> <> <> <> <> <> <> <> <> <> <> <> <>|
|                                               |
|-----------------------------------------------|
|                                               |
|<> <> <> <> <> <> <> <> <> <> <> <> <> <> <> <>|
|<> <> <> <> <> <> <> <> <> <> <> <> <> <> <> <>|
|<> <> <> <> <> <> <> <> <> <> <> <> <> <> <> <>|
+-----------------------------------------------+

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

more »

The original article was written on 2011-11-22 about GNOME 3.0. And I need to update for GNOME 3.1x, because gnome-session-properties has gone.

more »