Module 53 - Public Key Cryptography : An Introduction

Information Security 3
Public Key Cryptography: An Introduction

[econadv]

Towards the end, where nonce is encrypted using public key, it was wrongly said that Bob can verify Alice. The fact that public key is public, so an attacker can also sign nonce using the public key. The nonce is only helping with liveness of the sender, it helps avoid replay attack.