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?
A.
Key escrow
B.
Digital signatures
C.
PKI
D.
Hashing
PKI
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The only possible choices if you are dealing with encryption is PKI or possibly Key escrow. Escrow is basically a situation where you pay someone to hold a copy of your key in case of future losses. Not really relevant here. Not a huge fan of PKI but since the core concept of encryption is using the recipient’s public key to encrypt, accessing the public key via public key infrastructure is the correct answer.
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I thought PKI required person A to send person B A’s public key so B can use that key to encrypt the message. How does person B get the key if A can’t send it to them?
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