cid 119e8f1b456a3612b45c3bd1ac7a9e129007d6b84feae2a179c78c49c82caf6b · original · open access · via wikipedia
Title: HMAC-based one-time password Authors: Venue: Wikipedia Year: unknown Canonical: wiki:hmac-based-one-time-password URL: https://en.wikipedia.org/wiki/HMAC-based_one-time_password Collector: wikipedia OA: true ABSTRACT HMAC-based one-time password (HOTP) is a cryptographic algorithm based on a one-time password (OTP) and hash-based message authentication code (HMAC). At setup time, a client and server share a secret and other initialization settings. In future exchanges, when a client attempts to access a server, a challenge is sent from the server to the client and the client then uses the previously exchanged secret and computes a value to be used as the server's challenge response.