Audrey EXERCISES 91, her encryption exponent is 1. Suppose Alice's RSA modulus is ma = eA = 7, and her decryption exponent is da = 31. (a) Alice wants to sign the message x = 21. Calculate her...

Question 1 a and b show work


Extracted text: Audrey EXERCISES 91, her encryption exponent is 1. Suppose Alice's RSA modulus is ma = eA = 7, and her decryption exponent is da = 31. (a) Alice wants to sign the message x = 21. Calculate her signature. sent; if u # v, the is unacceptable.


Extracted text: 313 he regard the pair as likely to be authentic, or does he know that %3D the pair has been altered? 2 Suppose that Alice's RSA parameters are those given in Exercise 1 and that Bob's RSA modulus is mB = 187. 13 and Alice wants to encrypt the (a) If Bob's public exponent is eB message-signature pair (x, o) = (70, 21), calculate her encrypted pair. %3D 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? %3D