Suppose n 589 1931 and let e 53. bobs encryption, Ask an Expert

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a/Suppose n = 589 = 19*31 and let e = 53. Bob's encryption function is E(M) = Me mod n.
what is his decryption function?
b/Suppose n = 589 = 19*31 and let d = 53. Bob's decryption function is D(N) = Nd mod n.
what is his encryption function?

prob2

a/let n = 171121; this number is the product of two primes.

The four square roots of 56248 in Zn , are 68918, 75406, 95715 and 102203.

without using the trial division factor n.

b/find all the values of √17985 in Z34571

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