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What is the purpose of extended master key extension/session hash?

A.
UDP VOIP protocol extension
Answers
A.
UDP VOIP protocol extension
B.
In case of TLS1.x it is a prevention of a Man-in-the-Middle attack/disclosure of the client-server communication
Answers
B.
In case of TLS1.x it is a prevention of a Man-in-the-Middle attack/disclosure of the client-server communication
C.
Special TCP handshaking extension
Answers
C.
Special TCP handshaking extension
D.
Supplement DLP data watermark
Answers
D.
Supplement DLP data watermark
Suggested answer: B

Explanation:

The extended master key extension/session hash is a feature introduced in TLS 1.3 to prevent a Man-in-the-Middle attack/disclosure of the client-server communication. It works by generating a unique session hash for each connection, which is derived from the master key and other parameters. This session hash is then used to authenticate the application data and the end-of-handshake messages, ensuring that no one can tamper with or eavesdrop on the communication.

Reference:Check Point Security Expert R81 Course, TLS 1.3 RFC

asked 16/09/2024
MANIVANNAN POOPALASINGHAM
31 questions
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