User A and B use RSA algorithm to communicate over a secure channel. User A uses the prime numbers p = 31, q = 43, and e = 17 to generate his public and private keys. What is the public key of user A? What is the private key of A? What does user B need to perform encryption? Encrypt the message M = 130 to obtain the ciphertext C. Decrypt C to obtain the plaintext M.

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
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User A and B use RSA algorithm to communicate over a secure channel. User A uses the prime numbers p = 31, q = 43, and e = 17 to generate his public and private keys.

  1. What is the public key of user A?
  2. What is the private key of A?
  3. What does user B need to perform encryption?
  4. Encrypt the message M = 130 to obtain the ciphertext C.
  5. Decrypt C to obtain the plaintext M.
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