Barometer Logger – Day 3
Today’s goal was to make WiFi work.First I tried sample code on WiFi Usage on Seeed Studio. Scanning access points and connecting to a...
Barometer Logger – Day 2
After completing the LED blinker, the “Hello world” for micro controller projects, the next thing is just going straight to the barometer sensor.I first...
Barometer Logger – Day 1
There are several reasons I could have headache – I mean the real, physical headache – like, just before catching a cold, or when...
gluplot – a glucose level plot app with annotations
I had a Freestyle Libre sensor, a CGM (Continuous Glucose Monitoring) useful for diabetic or pre-diabetic patients, which allows you to measure your glucose...
C++ Implementation of Elliptic Curve
In my previous post, I implemented basic finite field and elliptic curve math and confirmed the public key generated in my code matches with...
WordPress glitches
Recently, I had trouble with updating on this site – WordPress doesn’t allow me to update any changes. Pressing “Update” button takes just long...
Understanding Elliptic Curve Cryptography
It’s getting tough but you can not avoid this modern cryptography technology called elliptic curve cryptography (ECC). The basic expression looks as simple as...
OTP (One Time Password) Card
I had to issue an OTP card so that I can change the maximum amount of bank transfer in the banking app. To strengthen...
RSA – public key cryptosystem
RSA is a very famous public key cryptosystem and I think it’s one of the greatest inventions of software engineering/information technology. It shouldn’t hurt...
GMP for big integer arithmetic
Now I’m back to my cryptography study after a long rest. My next target is RSA algorithm which requires big integer arithmetics. I decided...