Question

Which Authentication Encryption approach is taken by the SSL/TLS protocol?

(a) Hashing followed by encryption (H→E)

(b) Encryption followed by authentication (E→A)

(c) Authentication followed by encryption (A→E)

(d) Independently encrypt and authenticate (E + A)

This question was posed to me by my college director while I was bunking the class.

This question is from CCM, GCM and Key Wrapping in division Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

Answer 1

Correct option is (c) Authentication followed by encryption (A→E)

The explanation is: Authentication followed by encryption (A→E) is the AE approach taken by the SSL/TLS protocol.