How can I use PBKDF2 to derive an encryption key from a password and then access that key later without the password (i.e. with a cookie)?

I’m developing a notetaking app that will store users’ note and file data encrypted in a db and on backblaze (respectively). The app will not be end-to-end encrypted but data will be encrypted in transit (with TLS) and at rest (AES256, for… Continue reading How can I use PBKDF2 to derive an encryption key from a password and then access that key later without the password (i.e. with a cookie)?

Mechanical Switch Sci-Calc is Also a Macropad

A black OLED screen with a happy face displayed upon it is situated at the top of a squarish calculator with a 5x6 grid of white calculator keys. It floats above a graphing calculator, Nintendo Switch, aigo numpad, and an Arduino Mega on a white table. A handful of differently-colored kalih choc switches are in various places around the table.

Smartphones have replaced a desktop calculator for most folks these days, but sometimes that tactility is just what you need to get the mathematical juices flowing. Why not spruce up …read more Continue reading Mechanical Switch Sci-Calc is Also a Macropad