Replay Prevention

Definitions

1. The design features and controls that stop previously valid messages, tokens, or requests from being reused successfully by an attacker. Replay prevention commonly relies on nonces, timestamps, sequence numbers, short token lifetimes, and challenge-response protocols.

   In plain English: Protections that stop old valid messages from being reused in an attack.

   Example: "The protocol added replay prevention by binding each request to a nonce and rejecting duplicates outside a narrow time window."

Related Terms

• Cipher Suite
• Cryptographic Nonce
• Cryptographic Primitive
• Key Agreement
• Key Exchange
• Mutual Authentication
• Anti-Replay
• Packet Replay