2 1. A long-winded, encrypted transmission has been intercepted. Frequency analysis of the entire transmis-sion reveals that the most most used letter in the ciphertext is an R whereas the least used character inthe ciphertext is an X. Use this information to break the cipher and decrypt the following excerpt fromthe transmission. Assume an affine cipher was used for encryption.SMRER TL CJ LQJJC2. The following ciphertext message was encrypted using Vigenére Cipher cipher with keyword JEDI.MS. RZ MS QWC. XKMAI LÀ WS WZH.Determine the plaintext message.3. The following ciphertext message was encrypted using the RSA algorithn and public key (2021,97).1259 0854 1647 1139Determine the plaintext message.4. Using the EIGamal eryptosystem, ereate and encrypt a message for me. The plaintext message mustbe a recognizable word or phrase and at least eight alphabetic characters long. Divide the numericalplaintext into two digit blocks. Use a unique ephemeral key (j) to encrypt each block. My public key is(89,14, 8).5. The following two lines of ciphertext were created using a Verman cipher and Baudot code,01011 11010 00110 10110 01001 01100 10101 10011 01111 1001100001 01101 10110 00001 11000 01000 00000 01101 10101 10011Using the first line of Chapter 2 in our textbook as the key, determine the plaintext message.6. The ciphertext

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Answered: 2. The following ciphertext message was…

2. The following ciphertext message was encrypted using Vigenére Cipher cipher with keyword JEDI. MS. RZ MS QWC. XKMAI LA WS WZH. Determine the plaintext message.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

1. A long-winded, encrypted transmission has been intercepted. Frequency analysis of the entire transmis-
sion reveals that the most most used letter in the ciphertext is 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 JEDI.
MS. RZ MS QWC. XKMAI LÀ WS WZH.
Determine the plaintext message.
3. The following ciphertext message was encrypted using the RSA algorithn and public key (2021,97).
1259 0854 1647 1139
Determine the plaintext message.
4. Using the EIGamal eryptosystem, ereate and encrypt a message for me. The plaintext message must
be a recognizable word or phrase and at least eight alphabetic characters long. Divide the numerical
plaintext into two digit blocks. Use a unique ephemeral key (j) to encrypt each block. My public key is
(89,14, 8).
5. The following two lines of ciphertext were created using a Verman cipher 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

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