There are three typical ways to use nonces as challenges. Suppose N a is a nonce generated

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There are three typical ways to use nonces as challenges. Suppose N_a is a nonce generated by A, A and B share key K, and f() is a function (such as an increment). The three usages are image text in transcribed

Describe situations for which each usage is appropriate.

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Cryptography And Network Security

ISBN: 9780136097044

5th Edition

Authors: William Stallings

Question Posted: Jan 27, 2024 12:01 PM

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There are three typical ways to use nonces as challenges. Suppose N a is a nonce generated

Question:

Usage 1 (1) AB: Na (2) BA: E(K, N) Usage 2 (1) AB: E(K, N) (2) B A: Na Usage 3 (1) AB: E(K, N) (2) BA: E(K, f(Na))

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All three really serve the same purpose The difference is in th...View the full answer

Cryptography And Network Security

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