Using RSA algorithm what is the value of cipher test c if the plain text e = 7 and P = 5, q = 16 & n = 832. Determine the Euler’s totient function for the plain text?(a) 47(b) 584(c) 428(d) 60I have been asked this question at a job interview.This key question is from Cryptography in division Number Theory and Cryptography of Discrete Mathematics

Using RSA algorithm what is the value of cipher test c if the plain te

1.	Using RSA algorithm what is the value of cipher test c if the plain text e = 7 and P = 5, q = 16 & n = 832. Determine the Euler’s totient function for the plain text?(a) 47(b) 584(c) 428(d) 60I have been asked this question at a job interview.This key question is from Cryptography in division Number Theory and Cryptography of Discrete Mathematics
Answer» Right ANSWER is (d) 60 The explanation: Given PLAIN text (m) = 7, P = 5, Q = 16, where P and Q are two prime integer n = P * Q ⇒ n = 516 = 80 ⇒ Z = (P-1)(Q-1) ⇒ Z = (5-1)(16-1) = 415 = 60.

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