May 2024
Intermediate to advanced
309 pages
13h 33m
English
Content preview from Data Communications and Computer Networks by Pearson
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Network Security 281
The main problem in secret key cryptography is getting the sender and receiver to agree on the
secret key without anyone else finding out. If the key is compromised, the security offered by secret key
cryptography is severely reduced or eliminated. Secret key cryptography assumes that the parties who
share a key rely upon each other not to disclose the key and protect it against modification. If they are in
separate physical locations, they must trust on a medium such as courier, or a phone system, to prevent
the disclosure of the secret key. Anyone who overhears or intercepts the key in transit can
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