CompTIA Security+ (SY0-501) — Question 75

Two users need to securely share encrypted files via email. Company policy prohibits users from sharing credentials or exchanging encryption keys.
Which of the following can be implemented to enable users to share encrypted data while abiding by company policies?

Answer options

• A. Key escrow
• B. Digital signatures
• C. PKI
• D. Hashing

Correct answer: C

Explanation

The correct answer is C, PKI (Public Key Infrastructure), as it allows for secure key management and encryption without the need for credential sharing. Options A (Key escrow) and B (Digital signatures) do not facilitate the secure sharing of encrypted files in the manner required, while D (Hashing) is not suitable since it does not provide encryption capabilities.