Otway–Rees protocol

The Otway–Rees protocol is a cryptographic key exchange protocol designed for secure communication between two parties, particularly in a networked environment. Developed by Michael Otway and Sarah Rees in the 1980s, the protocol is primarily focused on providing mutual authentication and establishing a session key for encrypted communication. Key characteristics of the Otway–Rees protocol include: 1. **Mutual Authentication**: The protocol ensures that both parties authenticate each other before establishing a secure communication channel.