Before you go, check out these stories!

0
Hackernoon logoGlossary of Security Terms: Challenge-Response Authentication by@mozilla

Glossary of Security Terms: Challenge-Response Authentication

Author profile picture

@mozillaMozilla Contributors

Mozilla (stylized as moz://a) is a free software community founded in 1998 by members of Netscape.

In security protocols, a challenge is some data sent to the client by the server in order to generate a different response each time. Challenge-response protocols are one way to fight against replay attacks where an attacker listens to the previous messages and resends them at a later time to get the same credentials as the original message.

The HTTP authentication protocol is challenge-response based, though the "Basic" protocol isn't using a real challenge (the realm is always the same).

Learn more

ย View Previous Terms:

Credits

Author profile picture

@mozillaMozilla Contributors

Read my stories

Mozilla (stylized as moz://a) is a free software community founded in 1998 by members of Netscape.

Tags

Join Hacker Noon

Create your free account to unlock your custom reading experience.