Question

Developed and published by Whitfield Diffieand Martin Hellman in 1976, ______________ is a cryptographic protocol that allows two parties to establish a shared key over an insecure channel. It was the first publically described asymmetric algorithm and is often used for the key exchange of symmetric keys. A) RSA (Rivest–Shamir–Adleman)

B) ECC (Elliptic Curve Cryptography)

C) DH (Diffie-Hellman)

D) AES (Advanced Encryption Standard)

Answer 1

The correct answer to the cryptographic protocol developed by Whitfield Diffie and Martin Hellman in 1976 for key exchange over an insecure channel is C) DH (Diffie-Hellman). The DH key exchange was groundbreaking as the first publicly described asymmetric algorithm and remains a foundation of modern cryptography.

Step-by-step explanation:

Developed and published by Whitfield Diffie and Martin Hellman in 1976, Diffie-Hellman (DH) is a cryptographic protocol that allows two parties to establish a shared key over an insecure channel. It was the first publicly described asymmetric algorithm and is often used for the key exchange of symmetric keys. The correct answer is C) DH (Diffie-Hellman).

The DH key exchange is a method where two parties can jointly agree on a shared secret that will be used as a key in subsequent encryption processes. What makes this method special is that, even if the exchange process is observed by a third party, they cannot easily determine the shared secret, providing a secure way to start communication even over a compromised channel. The significance of the DH protocol in the field of cryptography cannot be understated, as it laid the groundwork for many security protocols in use today.