Dexter wants to set up his own public keys. He chooses p = 23 and q = 37 with e = 7. Answer the following using RSA cryptographic method: a) Encrypt the message ‘100’ and find the CIPHER number (C) to be sent. [5] C = Me mod pq b) Find the decryption key ‘d’. c) Now decrypt the message ‘10’ (this is the CIPHER message received). M = Cd mod pq.

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