PaperTOTP标准
RFC 6238
An IETF standard document for TOTP (Time-based One-Time Password). It defines an algorithm that uses a shared secret and a timestamp to generate dynamic verification codes.
Timeline (last 90 days)
Oct 13
RFC 6238 allows the server to tolerate a certain degree of drift, typically one 30-second window before and after, i.e. a tolerance range of about 90 seconds.
Unverified50%
Sep 10
Google Authenticator adopts the RFC 6238 standard (TOTP).
Unverified50%