Exam 312-50v13 topic 1 question 234 discussion

Answer: A My reasoning: o Both A and C looks correct – this is either multi-choice question or if not, I would choose A because using asymetric encryptions with RSA ensures confidentiality (as required by question) and signing with private key ensures non-repudiation - as you sign the document by your private key, then everyboty can verify your signature (i. e. hash of the document encrypted by your private key = digital signature) by using your public key – and you can’t disclaim / repudiate that you have signed it. o C) does not mention non-repudiation at all, even the answer sounds correct regarding encryption (confidentiality) – encrypting messages with public key of the recipient, so only they can decrypt it by their private key.

Company requires a secure email communication system that ensures both confidentiality and non-repudiation. To achieve this, a combination of symmetric and asymmetric encryption is the best approach. Here's why option C is the most suitable: - Confidentiality – This ensures that only the intended recipient can read the email. - Non-repudiation – This guarantees that the sender cannot deny sending the email.