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SSCP · Question #666

SSCP Question #666: Real Exam Question with Answer & Explanation

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 t

Submitted by viktor_hu· Apr 18, 2026Cryptography

Question

Which of the following binds a subject name to a public key value?

Options

  • AA public-key certificate
  • BA public key infrastructure
  • CA secret key infrastructure
  • DA private key certificate

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.

Topics

#Public-key certificate#Digital certificate#PKI#Public key

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