What technology should be used for the verified and secure exchange of public keys between entities Tom0123456789 and Dan9876543210?

Question

Options

• APassword-Authenticated Key Exchange
• BEncrypted Key Exchange
• CKey Encapsulation Mechanism
• DInitial Key Sharing

• A
  86% (55)
• B
  9% (6)
• C
  3% (2)
• D
  2% (1)

Explanation

Password-Authenticated Key Exchange (PAKE) is a cryptographic protocol that allows two parties to securely establish a shared key (or exchange public keys) based on a password, without exposing the password to attackers, even if they are able to observe the communication. It ensures that the exchange of keys is secure and authenticated, preventing man-in-the-middle attacks or impersonation. PAKE is useful when you need to verify the identity of the entities (in this case, Tom0123456789 and Dan9876543210) and securely exchange keys using a password as part of the authentication process. While Encrypted Key Exchange (EKE) is a method for secure key exchange, it is more specific to encrypting the actual exchange of keys and might not necessarily provide password Key Encapsulation Mechanism (KEM) is a technique used in post-quantum cryptography for securely transmitting a symmetric key, but it does not involve verifying entities through Initial Key Sharing is a more general term and does not refer to a specific cryptographic protocol. It lacks the security guarantees provided by a PAKE protocol.

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