SHARE
SPREAD
HELP

The Tradition of Sharing

Help your friends and juniors by posting answers to the questions that you know. Also post questions that are not available.

To start with, Sr2Jr’s first step is to reduce the expenses related to education. To achieve this goal Sr2Jr organized the textbook’s question and answers. Sr2Jr is community based and need your support to fill the question and answers. The question and answers posted will be available free of cost to all.

Sharing the knowledge gained, is a generous way to change our world for the better. -Sr2Jr

 

#
Authors:
James F. Kurose, Keith W. Ross
Chapter:
Security In Computer Networks
Exercise:
Review
Question:17 | ISBN:9780132856201 | Edition: 6

Question

What does it mean to say that a nonce is a once-in-a-lifetime value? In whose lifetime?

TextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbookTextbook

Answer

A nonce is a number that a protocol will use only once. That means that once a protocol used a nonce, it will never use that number again.

  • The lifetime is the one of the protocol.
  • In SSL, nonces are used to defend against the “connection replay attack”.
0 0

Discussions

Post the discussion to improve the above solution.