The approach taken by the Transport Layer Security protocol and the Wireless Transport Layer Security Protocol involve invoking HMAC _________ for each block of output wi.
A)zero times
B)twice
C)three times
D)once

Question

Quizplus · Accepted Answer

The Transport Layer Security (TLS) protocol and the Wireless Transport Layer Security (WTLS) protocol both use HMAC twice for each block of output, once for the inner hash and once for the outer hash, as part of their cryptographic operations.

The Approach Taken by the Transport Layer Security Protocol and the Wireless