313 (54, 89). Does the pair has been altered? that Bob's RSA modulus is mB = 187. (a) If Bob's public exponent is eg = 13 and Alice wants to encrypt the message-signature pair (x, o) = (70, 21),...

Question 2 a and b show work


Extracted text: 313 (54, 89). Does the pair has been altered? that Bob's RSA modulus is mB = 187. (a) If Bob's public exponent is eg = 13 and Alice wants to encrypt the message-signature pair (x, o) = (70, 21), calculate her encrypted pair. 37 and he receives the en- (b) If Bob's private exponent is dB ciphered message-signature pair (11, 69), what are the original plaintext and signature? Is this a valid message-signature pair? 3. You have received the following message and signature pairs that pur port to be from a person whose RSA modulus is 2573 and whose publi exponent is 59. Which message-signature pair is valid? (a) = 423, ỹ = 2123 (b) %3D