Write a sketch on Arduino

Employer
[no-member:pro]Aleksandr[/no-member:pro]
Project parameters
Type of cooperationOne-time project
SectionSoftware development
Prepaymentwithout prepayment
Payment methodsBank transfer
Acceptance of requestsfrom Jul 8, 2022 until Jul 18, 2022
Project description
Good afternoon. We need an Arduino specialist. We need to write a sketch on Arduino uno, we need to make a kind of token. For two-factor authentication based on the TOTP algorithm (one-time passwords with a time interval of ~30c) + plus there should be encryption (Guest R 34.12-15 "Grasshopper"). I don’t have TZ, I should also write, I have a form of TZ in the future I can throw off. We can do some more schematics.
I can provide + video example of the device
The device consists of: arudino uno, real-time module ds3231, display lcd1602
I can provide + video example of the device
The device consists of: arudino uno, real-time module ds3231, display lcd1602