In an RSA system the public key (e,n) of user A is defined as (7,119). Calculate Φn and private key d. what is the cipher text when you encrypt message m=10, using the public key? -

Given Data:

• Public Key (e,n) = (7,119)
• Message m=10

Solution:

• From given data we find that e=7 and n=119.

• The formula for n is: n= p *q.

  That means, p and q should be a factor of 119. Two such numbers are 7 and 17.

  Therefore, p=17 and q=7

• Now, …