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How TOTP Authenticator Apps Work?

Time-based One-Time Password A Time-based One-Time Password ( TOTP ) is a temporary passcode (a secret number) used to confirm a person's identity when logging into a computer system.

  • TOTP is a time-based two-factor authentication method
  • Uses shared secret key and current time for code generation
  • Three-step process: time discretization, cryptographic hashing, truncation

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