Problem 1: Consider the following protocol: Alice + Dz.(A) (m||timestamp) + Bob (1) ( where k44) is the RSA private-key

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Problem 1 Consider The Following Protocol Alice Dz A M Timestamp Bob 1 Where K44 Is The Rsa Private Key 1 (232.58 KiB) Viewed 34 times

Problem 1: Consider the following protocol: Alice + Dz.(A) (m||timestamp) + Bob (1) ( where k44) is the RSA private-key of Alice, Degay is the decryption function specified by the private key kA) m is a message from Alice to Bob, and timestamp is the current time and date. Assume that the RSA public-key cipher is secure and the public key of Alice is in the public domain (hence, everyone knows the public key of Alice). Which of the following statements is true in general? 10 marks (A) The protocol must provide the sender authentication, data integrity, and antireplay. (B) The protocol provides only the sender authentication and sender nonrepudiation. (C) The protocol provides only the data integrity and sender authentication. (D) The protocol provides only the antireplay and data integrity. (E) None of the four statements above is correct.