challenge-response


Also found in: Acronyms.

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 ?
Beyond that, I do want Challengr to be more than a dating app and for the world to see the power of this Challenge-Response interaction pattern.
The authors suggested using both challenge-response authentication and digital signatures to authenticate the vehicle [16].
[19] Xianru Du, Dan Shan, Kai Zeng and L Huie, "Physical layer challenge-response authentication in wireless networks with relay," in Proc.
(ii) The audition procedure of our scheme is stateless and supports unlimited challenge-response interactions.
Although we agree that CAS scheme is already insecure against SAT solver attacks [7] and probabilistic decision tree attacks [8], in this paper we show how to increase the speed of such attacks (reduce the number of login sessions the attacker has to observe) by observing the timing information in every challenge-response round.
Protocols using virtual OTP can be viewed as a challenge-response protocol in which the challenge is not sent by the server, but is a publicly known ever changing value.
We apply the idea of challenge-response to the simple authentication protocol in the previous section.
The M-CRs is a two or more challenge-response access mechanisms where a user is expected to answer two or more CAPTCHA tests by providing multiple responses before he/she is granted access to the protected resources.
CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a challenge-response test that ensures that a response during a user logon is not computer-generated but instead is truly entered by a human hand, by requiring a user to manually enter a small amount of text displayed in an image to help prevent automated registration and fraud.</p><p>D-Link said that the new features are available on most of the products currently shipping.
CAPTCHA is a challenge-response test that ensures that a response during a user logon is not computer-generated but instead is truly entered by a human hand, by requiring a user to manually enter a small amount of text displayed in an image to help prevent automated registration and fraud.
CAPTCHA is a challenge-response test that ensures that a response during a user logon is not computer-generated but is entered by a human hand, by requiring a user to manually enter a small amount of text displayed in an image to help prevent automated registration and fraud.
Another method Challenge-Response Authentication is used to prove the identity of a user logging into the network.