challenge-response


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challenge-response

[′chal·ənj ri′späns]
(computer science)
A method of identifying and authenticating persons seeking access to a computing system; each user is issued a device resembling a pocket calculator and is given a different problem to solve (the challenge), to which the calculator provides part of the answer, each time the person seeks authentication.
References in periodicals archive ?
In this paper, a multiple key agreement scheme is presented which is identity-based and uses the challenge-response method to verify the identities of the two sides of the protocol.
The authentication protocol which we propose in this section is based on a challenge-response authentication protocol like CRAMMD5 [2] which uses a cryptographic hash function.
The Web server then calls to a standard RADIUS server, which computes the same challenge-response value; if the two match, then the user's identity is authenticated.
Challenge-response is a method of filtering spam whereby all senders are blocked by default.
The challenge-response feature supports both the YubiKey OTP algorithm, as well as standard HMAC-SHA1.
The ICard is available as a challenge-response authentication card, and can be used with either a web or software interface.
Using a CAPTCHA challenge-response, users are required to enter a unique id before sending each text message.
Spam Arrest LLC is a Seattle-based company that protects its members' inboxes from unwanted communications, utilizing its patented challenge-response system.
Other functionalities of Digipass include e-signatures, host authentication, challenge-response and more.
New, patent-pending security features supporting Akonix's 360-Degree Security for Real-Time Communications(TM) include a unique challenge-response system for ensuring that 'poisoned Web addresses' cannot be sent through instant messenger systems.
URL challenge-response - protects against social engineering attacks and 'URL poisoning', the hiding of a live and dangerous hyperlink behind what appears to be a legitimate URL.
Reviewing all options available, we found that VASCO's Digipass product has a combination of unique features - including Web site authentication, challenge-response and digital signatures - that will provide our clients with high levels of security.