Protocol Security

Definitions

1. The security properties and protections of a communication protocol, including authentication, confidentiality, integrity, replay resistance, and downgrade safety. Protocol security depends on design, implementation, configuration, and how the protocol is used within a larger system.

   In plain English: How well a communication protocol protects data and resists attack.

   Example: "The issue was not just a weak cipher suite but a broader protocol security failure around unauthenticated negotiation."

Related Terms

• Cipher Suite
• Cryptographic Nonce
• Cryptographic Primitive
• Key Agreement
• Key Exchange
• Authentication Protocol
• Cryptographic Protocol
• Null Cipher