What is a Cryptographic Nonce? | Security Encyclopedia

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What is a Nonce? - Cryptographic Nonce from SearchSecurity

A natural question is whether we can use a nonce and public key cryptography to solve the end-point authentication problem in Section 8.4. Consider the following natural protocol: (1) Alice sends the message "I am Al ice" to Bob. (2) Bob chooses a nonce, R, and sends it to Alice. (3) Alice uses her private key to encrypt the nonce and sends the resulting value to Bob. (4) Bob applies Alice's public key to the received message. Thus, Bob computes R and authenticates Alice. a. Diagram this protoco