Replace app with custom system?Wednesday, October 14, 2020 at 03:04pm
Many banks use the CrontoSign Swiss app or something similar (e.g. comdirect photoTAN) for the 2FA. The app is available for iOS and Android, but not everyone has such a device. Is the used protocol open? Is it possible to integrate the core functionality of the app (registration; Cronto image => confirmation code) with other UIs? I.e. is there a programming library or API that can be called to process the challenges (presumably based on some stored private key?) and obtain the numeric codes that the bank wants?