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n that the most common letter in the plaintext is “E”, find the key and hence obtain the plaintext.

n that the most common letter in the plaintext is “E”, find the key and hence obtain the plaintext.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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The following cipher text was sent from Bob to Alice using an XOR operation with an
unknown 8-bit key. It is discovered that the 8-bit has been repeated reused (i.e. not a OTP)
which is a fatal mistake. Given that the most common letter in the plaintext is “E”, find the
key and hence obtain the plaintext.
Cipher text: 11110000 11111001 11110000 11100011 11110000 11111011

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