challenge-response Last modified: Tuesday, June 16, 2009
(1) A common authentication technique whereby an individual is prompted (the challenge) to provide some private information (the response). Most security systems that rely on smart cards are based on challenge-response. A user is given a code (the challenge) which he or she enters into the smart card. The smart card then displays a new code (the response) that the user can present to log in. (2) In biometrics, challenge response is the term used to describe the method by which the identification of a person is detected based on voluntary or involuntary responses. Challenge response is a type of biometric system security.
•E-mail this definition to a colleague• For internet.com pages about challenge-response . Also check out the following links! Webopedia's "Did You Know...?" Section  Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software. Webopedia's Quick Reference Section  Use this Webopedia reference section for information on common Internet and computer facts and occurrences.	Biometrics Security authentication biometric accuracy biometric engine biometrics CHAP S/key smart card Give Us Your Feedback Books challenge response Products Shop by Top Models: Ron Rhodes - The Challenge of the Cults and New Religions: The Essential Guide to Their History, Their Doctrine, and Our Response 3 store offers from $18 - $25 Charles Hauss - Comparative Politics: Domestic Responses to Global Challenges 4 store offers from $118 - $164 Philip D. Curtin - The World and the West: The European Challenge and the Overseas Response in the Age of Empire 3 store offers from $21 - $85 Effectively Countering Terrorism: The Challenges of Prevention, Preparedness and Response 2 store offers from $64 - $88 New Religious Movements: Challenge and Response 2 store offers from $37 - $42