5. Diffie-Hellman key exchange. Alice and Bob use Diffie-Hellman key exchange protocol to communicate in secret....
Question1: Alice and Bob use the Diffie–Hellman key exchange technique with a common prime q = 1 5 7 and a primitive root a = 5. a. If Alice has a private key XA = 15, find her public key YA. b. If Bob has a private key XB = 27, find his public key YB. c. What is the shared secret key between Alice and Bob? Question2: Alice and Bob use the Diffie-Hellman key exchange technique with a common...
Diffie-Hellman Key Exchange: Alice and Bob wants to agree on a key. First, both agree on p = 23 and g = 5 which is public. Alice chooses her secret key xA = 8 and Bob xB = 14. (a) What will be the shared secret key? (b) DH Key exchange is vulnerable to the following attack. Adversary sits between Alice and Bob, intercepting all messages. Alice and Bob thinks they talk to each other while in fact both talking...
In a Diffie-Hellman Key Exchange, Martha and John have chosen prime value q = 19 and primitive root a = 10. If Martha's secret key is 4 and John's secret key is 6, determine the following three values: The value Martha sends to John. The value John send to Martha The shared key they exchanged.
Find Alice and Bob’s secret number in Diffie-Hellman key exchange if g=5, p=103, A = 102, B = 94.
The Diffie-Hellman key exchange is vulnerable to the following type of attack. An opponent Carol intercepts Alice’s public value and sends her own public value to Bob. When Bob transmits his public value, Carol substitutes it with her own and sends it to Alice. After this exchange, Carol simply decrypts any messages sent out by Alice or Bob, and then reads and possibly modifies them before re-encrypting with the appropriate key and transmitting them to the other party. Choose all...
users A and B use the Diffie-Hellman key exchange technique with a common prime p=107 and a primitive root g=5. If user A has private key 112 and publick key 3 and user B has private key 146 and publick key 19 Find the following Ans If user C just joined the group and his private key is 6. what is the security key between A and C? what is the security key between B and C?
Answer all of it asap Discrete mathematics Problem 10 (10 pts) Alice and Bob would like to exchange a key using the Diffie-Hellman protocol that uses the following public information: the cyclic group Zio, and 5 as its base element. Alice: If she chooses 3 as her private key, which element does she send to Bob. Bob: If he chooses 4 as his private key, which element does he send to Alice Key-Exchanged: What is their Private Key exchanged. Problem...
The Diffie-Hellman key exchange is vulnerable to the following type of attack. An opponent Carol intercepts Alice’s public value and sends her own public value to Bob. When Bob transmits his public value, Carol substitutes it with her own and sends it to Alice. After this exchange, Carol simply decrypts any messages sent out by Alice or Bob, and then reads and possibly modifies them before re-encrypting with the appropriate key and transmitting them to the other party. Choose all...
describe the simple protocol for classical cryptographic key exchange. assume alice and bob want to communicate and cathy is the trusted third party
The Diffie-Hellman public-key encryption algorithm is an alternative key exchange algorithm that is used by protocols such as IPSec for communicating parties to agree on a shared key. The DH algorithm makes use of a large prime number p and another large number, g that is less than p. Both p and g are made public (so that an attacker would know them). In DH, Alice and Bob each independently choose secret keys, ?? and ??, respectively. Alice then computes...