Challenge Response Protocol Glossary Definition

Challenge Response Protocol in computer security, challenge-response authentication 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.

See also: Challenge Response .

In security and compliance work, this term helps teams describe controls, risks, identity practices, standards, audits, or protective technologies. It is relevant when managing access, reducing exposure, documenting safeguards, or demonstrating accountability.