CISSP Practice Exam 2025 – Complete Prep Guide

The Counter Mode CBC MAC Protocol (CCMP) ensures data integrity as a fundamental aspect of its design. CCMP is used within the IEEE 802.11i standard for wireless security and is specifically tailored to provide confidentiality, integrity, and authenticity to data communications in wireless networks.

Data integrity means that the information has not been altered during transmission, ensuring that any unintended modifications can be detected. CCMP uses a combination of the Counter Mode for encryption and the Cipher Block Chaining Message Authentication Code (CBC-MAC) for integrity, which allows devices to verify that the received data matches what was originally sent, thus protecting against tampering.

While encryption is essential for confidentiality, CCMP's primary role includes mechanisms that validate both the data integrity and the source authenticity. This makes it more than just an encryption protocol; it is a security protocol designed to combat various threats such as replay attacks and unauthorized data modifications.

High-speed data transmission and multi-user access are not specific functions of CCMP. Speed is influenced by other factors within the network structure rather than the protocol itself, and multi-user access is a general feature of many network protocols, not just CCMP. Overall, the critical function of CCMP is to ensure that the data remains intact and trustworthy during