The RSA Algorithm
E(D(M)) = M: (2) c) Eand Dare easy to compute. d) The publicity of Edoes not compromise the secrecy of D, meaning you cannot easily gure out Dfrom E. With a given E, we are still not given an e cient way of computing D. If C= E(M) is the ciphertext, then trying to gure out Dby trying to satisfy an Min E(M) = Cis unreasonably di cult: the number
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