Arduino MicroView Time-based One-time Password (TOTP) Token Generator
Tested with Google Authenticator. Works well, enjoy.
** Reqired Libraries **
MicroView http://learn.microview.io/ sha1 For HMAC-SHA1 hash this implementation uses the code from Cathedrow / Cryptosuite ( https://github.com/Cathedrow/Cryptosuite ). However a small change was added to sha1.h and sha1.c: The method size_t Sha1Class::writebytes(const uint8_t* data, int length) TOTP https://github.com/lucadentella/ArduinoLib_TOTP Time http://www.pjrc.com/teensy/td_libs_Time.html DS1307RTC http://www.pjrc.com/teensy/td_libs_DS1307RTC.html