Data Exchange1. Detail the series of steps involved in the initial key exchange, and the steps involved in sending a message M from Alice to Bob, both at Alice’s and at Bob’s end. Please see attached for full description.
Secure Data Exchange
Suppose Alice and Bob want to exchange data securely. They want confidentiality (encryption), integrity and authentication (MAC), and non-repudiation (Digital Signatures). They want the bulk encryption to be done using symmetric cipher “X”, with MAC function “H”. Both have signed and certified RSA keys. You may assume both parties have already exchanged and verified the validity of the public RSA keys of the other party.
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