Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » C »

challenge-response

(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.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
Taking Ownership through Digital Governance

Taking ownership of our own misjudgments or simple forgetfulness takes a healthy amount of humility and some honest self-assessment. Yet sometimes... Read More »

Have We Become a World of Addicts?

It's hard to imagine our lives without smartphones. But people who suffer separation anxiety when they don't have their phones nearby may be in... Read More »

13 Best Free Android Apps

From secure messaging to document editing, our top free must-have apps have been rated, reviewed and named the best free Android apps of 2015. Read More »

QUICK REFERENCE
29 Free Android Apps for Cash-Strapped Students

From wacky alarm clocks to lecture hall tools and after class entertainment, these Android apps are a good fit for a student's life and budget. Read More »

Network Fundamentals Study Guide

A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »

Computer Architecture Study Guide

This Webopedia  study guide describes the different parts of a computer system and their relations. Read More »