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Semenov [28]
3 years ago
12

In symmetric key cryptosystem, assume that Alice and Bob have set up a common key Kab. This key is only known to Alice and Bob.

(1a) Can we achieve data origin authentication?
Computers and Technology
1 answer:
azamat3 years ago
4 0

Answer:

yes

Explanation:

If it is guranteed the key is only known to Alice and Bob and there is no risk of man in the middle attack or channel spoofing so we can achieve data origin authentication

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The program written in Java without comment is as follows

import java.util.*;

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}

Explanation:

<em>I've added the full source code as an attachment where I use comments to explain difficult lines</em>

Download java
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