Remember CTAP
Full name: Client to Authenticator Protocol
Memory aid: Client Talks to the Authenticator through a Protocol.
CTAP and the browser's WebAuthn API operate at different interfaces.
Study area: Identity & access · Batch 8
Relevant study for: CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline · ISC2 SSCP · Security, Compliance, and Identity Fundamentals SC-900 · Identity and Access Administrator SC-300 · ISC2 CC · Cybersecurity Architect SC-100
Practice with exam flashcards →Cybersecurity & Identity / Knowledge library
CTAP — Client to Authenticator Protocol
Connects clients with external authenticators in supported FIDO flows.
Why learn CTAP — Client to Authenticator Protocol?
Connects clients with external authenticators in supported FIDO flows.
Where it came from
CTAP and the browser's WebAuthn API operate at different interfaces.
- Memory aid (a learning cue, not the expansion): Client Talks to the Authenticator through a Protocol.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand CTAP: Client to Authenticator Protocol.
- Recall this memory aid: Client Talks to the Authenticator through a Protocol.
- Explain the practical use: Connects clients with external authenticators in supported FIDO flows.
- Explain this distinction: CTAP and the browser's WebAuthn API operate at different interfaces.
- Identify CTAP in a device specification, architecture diagram, or system inventory.
Documentation and sources
- FIDO Alliance specifications (fidoalliance.org)