9.10 Assume that you generate an authenticated and encrypted message by first applying the RSA transformation determined by your private key, and then enciphering the message using recipient's public key (note that you do NOT use hash function before the first transformation). Will this scheme work correctly [i.e., give the possibility to reconstruct the original message at the recipient's side, for all possible relations between the sender's modulus nS and the recipient's modulus nR (nS 7 nR, nS 6 nR, nS = nR)]? Explain your answer. In case your answer is "no," how would you correct this scheme? | |
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