In RSA if n = 51 and e = 5 what is d?
Alice has the RSA public key (n, e) = (11413, 251) and private key d = 1651. And Bob also has his own RSA public key (n’, e’) = (20413, 2221) and private key d’ = 6661. Alice wants to send the message 1314 to Bob with both authentication and non-repudiation. Use Maple, calculate what is the ciphertext sent by Alice. And Verify that Bob is able to recover the original plaintext 1314.
Consider the RSA algorithm. Let the two prime numbers, p=11 and q=41. You need to derive appropriate public key (e,n) and private key (d,n). Can we pick e=5? If yes, what will be the corresponding (d,n)? Can we pick e=17? If yes, what will be the corresponding (d,n)? (Calculation Reference is given in appendix) Use e=17, how to encrypt the number 3? You do not need to provide the encrypted value.
Using RSA Implementation: 1. Alice's RSA public key is given by (e, n) = (59, 1189). = (a) Determine Alice's private key (d, n). (b) Bob sends his first message Mi 67 to Alice, encrypting it with RSA using Alice's public key. He obtains a cypher text Cị that gets forwarded to Alice. What is Cį? (c) Bob sends his second message M2 to Alice, encrypting it with RSA using Alice's public key. Eve, who was eavesdropping on the commu-...
(16 pts) In the RSA public key cryptography system (S,N,e,d,E,D), let p = 347, q = 743, and N = 347 · 743 = 247821. (a) (8 pts) Which of the two numbers 4193, 4199 can be an encryption key, and why? If one of them can be an encryption key e, find its corresponding decryption key d. (b) (8 pts) How many possible pairs (e,d) of encryption and decryption keys can be made for the RSA system? (If you...
Derive a suitable RSA key pair (in,e) and (n,d) by hand. Pick p and q to be at least three digits each. Supply an e that is not prime.
Suppose that Marie publishes the following public RSA values n = 33 and e = 7. What is the value of the private key?
o-8. (15 points) Bob's simple toy RSA eryptosystem has public key kyub(n, e) (65,5), where n =p,-5x13-65 and e-5. I. Describe the key pair generation procedure for Bob to generate his private key kor- d. With the above given parameters, use EEA to calculate d 2. Describe RSA encryption procedure that Alice uses to encrypt her plaintext message x to its above given parameters, what will be y? ciphertext y before sending the message to Bob. Suppose Alice's message x-...
6. An RSA cryptosystem has modulus n-299, which is a product of the primes 23 and 13. Your public encoding key e-59. What is your secret decoding key d? (a) 179 (b) 205 (c 214 (d) none of these. 6. An RSA cryptosystem has modulus n-299, which is a product of the primes 23 and 13. Your public encoding key e-59. What is your secret decoding key d? (a) 179 (b) 205 (c 214 (d) none of these.
Exercise 1 (2 pts). Alice has her RSA public key (n,e) where n = 247 = 13·19 and e = 25. What is her secret key and what is her signature corresponding to the message M = 63? n=247=13 x 19
Problem 4. The plaintext P has been encrypted with RSA n = 65, e = 29 to yield the ciphertext C = 3 = P29 mod 65. Find P using the decryption key d, and prove the congruence class of P that solves this congruence is unique.