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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.

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
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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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 ereated 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
Transcribed Image Text: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 ereated 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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