Shared secret

A shared secret is a piece of information, such as a password, encryption key, or cryptographic token, that is known only to a specific set of parties. It is used in various security contexts to ensure secure communication and authentication between users, devices, or systems. **Key characteristics of a shared secret:** 1. **Confidentiality**: The shared secret should remain confidential between the parties involved. If it is exposed to unauthorized individuals, the security of the communication is compromised.