Keybi | 65. DIY Mechanical keyboard, firmware based on the Nitrokey Pro source code: https://github.com/cyril-L/keybi_firmware

@cyril #mechanicalkeyboards #keyboards

@cyril I was thinking in a similar direction lately - DIY keyboard with build-in token security AND random number generator.
I see your project is using "Nitrokey Pro" not "Pro 2" (the newer one). The "Pro 2" has:
True random number generator (TRNG): 40 kbit/s - according to the description here: https://shop.nitrokey.com/shop/product/nk-pro-2-nitrokey-pro-2-3

I can't find a description for the older model. Does it have build-in TRNG?

@nitrokey

@_1751015 @cyril Yes it has. Here is the old factsheet: https://www.nitrokey.com/files/doc/Nitrokey_Pro_1_factsheet.pdf

@nitrokey @_1751015 I did not look at the code, but I think the STM32F103 has no hardware way to generate true random numbers. So I guess it would get entropy from ADC or user inputs?