7. The following ciphertext 261 163 196 172 217 172 89 142 76 217 209 172 ? was produced using the Merkle-Hellman Knapsack cryptosystem for a user with a private key that consists of the sequence {5, 8,17, 36, 71}, modulus m = message. 145, and multiplier a = 82. Obtain the plaintext 8. The Rabin public-key encryption scheme is similar to RSA. Research this cryptosystem and decrypt the following ciphertext: 25292168 which was encrypted for a user with public key n = 27219809. 9. Prove that 9 u,424 if and only if 9 u,n. Hint: Use identity (1) on page 288. 10. Establish the following Fibonacci identity:

7. The following ciphertext 261 163 196 172 217 172 89 142 76 217 209 172 ? was produced using the Merkle-Hellman Knapsack cryptosystem for a user with a private key that consists of the sequence {5, 8,17, 36, 71}, modulus m = message. 145, and multiplier a = 82. Obtain the plaintext 8. The Rabin public-key encryption scheme is similar to RSA. Research this cryptosystem and decrypt the following ciphertext: 25292168 which was encrypted for a user with public key n = 27219809. 9. Prove that 9 u,424 if and only if 9 u,n. Hint: Use identity (1) on page 288. 10. Establish the following Fibonacci identity:

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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