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Discrete Mathematics. (a) Use modular arithmetic to find 1040 mod 210. Show your working. (b) An...

Discrete Mathematics.


(a) Use modular arithmetic to find 1040 mod 210. Show your working.
(b) An RSA cryptosystem uses public key pq = 65 and e = 7. Decrypt the ciphertext 57 9 and translate the result into letters of the alphabet to discover the message.

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Answer #1

Now we have to Degpit 57,9 de l[(P-1) (8-1)] + k=ts d - 1x[05-068-138+1 ㅋ 4x12+1 T F/IT ㅋ da Now Mi (55) (mod 65] =8 Maa (a)?

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