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For p = 11 and q = 17 and choose e=7. Apply RSA algorithm where PT message=88 and thus find the CT.

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For p = 11 and q = 17 and choose e=7. Apply RSA algorithm where PT message=88 and thus find the CT.

(a) 23

(b) 64

(c) 11

(d) 54

The question was posed to me in an interview for internship.

The question is from Knapsack/ Merkle in chapter Public Key Cryptography and RSA of Cryptograph & Network Security

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Correct choice is (c) 11

Easiest explanation: n = pq = 11 × 19 = 187.

                            C=M^e mod n ;  C=88^7 mod 187 ; C = 11 mod 187.

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