Overview#

Challenge-response typically describes an Authentication Method which uses a request-Response messaging pattern.

Challenge-response is a family of protocols in which one party presents a question ("challenge") and another party must provide a valid answer ("response") to be authenticated.[1]

The simplest example of a Challenge-response protocol is password authentication, where the challenge is asking for the password and the valid response is the correct password.

More Information#

There might be more information for this subject on one of the following:

• Basic Authentication Scheme
• Challenge-response Authentication Mechanism
• HTTP Authentication Framework
• M-04-04 Level of Assurance (LOA)
• Methods to Set NSPM Challenge-Responses
• NSPM Setting Challenge Answers
• NTLM SSP
• NovellS Challenge Response System
• Salted Challenge Response Authentication Mechanism
• Shared Secret
• The SRP Authentication and Key Exchange System

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• [#1] - Challenge-response authentication - based on information obtained 2016-06-05-