- The ciphertext HAGO UM MHE UFUOM!
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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Question 4
Transcribed Image Text:BIon reveals that the most most used letter in the ciphertext 18 an R whereas the least used character in
the ciphertext is an X. Use this information to break the cipher and decrypt the following excerpt from
the transmission. Assume an affine cipher was used for encryption.
SMRER TL CJ LQJJC
2. The following ciphertext message was encrypted using Vigenére Cipher cipher with keyword JEDL
MS. RZ MS QWC. XKMAI LA WS WZH.
Determine the plaintext message.
3. The following ciphertext message was encrypted using the RSA algorithm and public key (2021,97).
1259 0854 1647 1139
Determine the plaintext message.
4. Using the EIGamal cryptosystem, create and encrypt a message for me. The plaintext message must
be a recognizable word or phrase and at lenst eight alphabetic characters long. Divide the numerical
plaintext into two digit blocks. Use a unique ephemeral key ()) to enerypt each block. My public key is
(89, 14, 8).
5. The following two lines of ciphertext were created using a Verman eipher and Baudot code.
01011 11010 00110 10110 01001 01100 10101 10011 01111 10011
00001 01101 10110 00001 11000 01000 00000 01101 10101 10011
Using the first line of Chapter 2 in our textbook as the key, determine the plaintext message.
6. The ciphertext
HAGO UM MHE UFUOM!
10:54 AM
65°E Supny
ךרהר
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