Time based One Time Password

• 30초 단위로 인증번호를 생성하고 인증번호를 입력하면 인증 완료
• 2 Factor Authentication

프로세스

1. Sign up
2. QR code scan in Authentificator App

• https://apps.apple.com/app/google-authenticator/id388497605
• https://apps.apple.com/app/microsoft-authenticator/id983156458
• https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2
• https://play.google.com/store/apps/details?id=com.azure.authenticator

3. Login with 6-digit code in Authentificator App

Key Uri Format

• otpauth://TYPE/LABEL?PARAMETERS
  • TYPE: totp or hotp
  • https://github.com/google/google-authenticator/wiki/Key-Uri-Format

ref

• https://github.com/kenu/totp
• https://blog.shahednasser.com/how-to-add-authentication-with-google-authenticator-in-node-js/