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Question 12 of 46

What is PKI (Public Key Infrastructure) and what are its main components?

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PKI is a framework that manages digital keys and certificates for secure communication. It provides the infrastructure needed to create, manage, distribute, use, store, and revoke digital certificates.

Main Components:

  1. Certificate Authority (CA): Issues and manages certificates
  2. Registration Authority (RA): Verifies certificate requests before CA signs them
  3. Digital Certificates: Bind public keys to identities
  4. Certificate Repository: Stores and distributes certificates
  5. Certificate Revocation List (CRL): Lists revoked certificates
  6. Key Management: Handles key generation, storage, and lifecycle

PKI enables trust relationships between parties who have never met by establishing a chain of trust through trusted CAs.

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