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UGC-NET | UGC NET CS 2015 Dec – II | Question 25

  • Last Updated : 02 May, 2018

Using p = 3, q = 13, d = 7 and e = 3 in the RSA algorithm, what is the value of ciphertext for a plain text 5 ?

(A) 8
(B) 16
(C) 26
(D) 33


Answer: (A)

Explanation:
p = 3, q = 13, d = 7, e = 3, M = 5, C = ?
C = Me mod n
n = p * q
= 3 * 13
= 39
C = 53 mod 39
= 8
So, option (A) is correct.


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