Quiz Entry - updated: 2026.07.14
What is the difference between identity, authenticity, and authentication?
Identity is who you claim to be, authenticity is whether that claim is genuine, and authentication is the process of verifying that claim.
| Concept | Definition | Example |
|---|---|---|
| Identity | A claimed attribute — who or what something says it is | "I am user alice@company.com" |
| Authenticity | The property of being genuine — the claim is true | Alice really is who she claims to be |
| Authentication | The process of verifying identity — proving the claim | Checking Alice's password, certificate, or biometric |
How they connect in practice:
- User claims an identity (enters username)
- System requests authentication (asks for proof)
- User provides credentials (password, token, fingerprint)
- If verified, the identity is considered authentic
Authentication factors:
- Something you know — password, PIN
- Something you have — smart card, phone, hardware token
- Something you are — fingerprint, face, iris
Tip: Think of it as a sequence: Claim → Prove → Trust. Identity is the claim, authentication is the proof, authenticity is the trust that results.
Go deeper:
Authentication (Wikipedia EN) — verifying a claimed identity and the difference between identification and authentication.- Multi-factor authentication (Wikipedia EN) — combining know/have/are factors to make proof stronger.