SSCP · Question #666
Which of the following binds a subject name to a public key value?
The correct answer is A. A public-key certificate. A public-key certificate (most commonly an X.509 certificate) cryptographically binds a subject's identity (name or other identifying information) to their public key. This binding is verified and digitally signed by a trusted Certificate Authority (CA), ensuring that users can…
Question
Options
- AA public-key certificate
- BA public key infrastructure
- CA secret key infrastructure
- DA private key certificate
How the community answered
(27 responses)- A96% (26)
- B4% (1)
Explanation
A public-key certificate (most commonly an X.509 certificate) cryptographically binds a subject's identity (name or other identifying information) to their public key. This binding is verified and digitally signed by a trusted Certificate Authority (CA), ensuring that users can trust the association between the identity and the key. A PKI (Public Key Infrastructure) is the broader system and framework that manages certificates, not the binding artifact itself. There is no such thing as a 'secret key certificate' or 'private key certificate' in standard PKI - private keys are never published in certificates.
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