MAC Layer Key Hierarchies and Establishment Procedures
نویسنده
چکیده
To achieve confidential communication channel between devices they must share a security association that defines the keys and algorithms used to secure the communication. In this paper, methods to create such security associations based on a pre-shared key used in WLAN and WiMedia’s UWB standards are discussed. The standards provide key agreement algorithms that operate on MAC layer based on a secret key shared by the devices. With the protocols, the devices are able to derive temporal keys for securing communication sessions. In addition to generating pair-wise keys, the standards also provide ways to distribute keys to secure group communications. In this paper, the key hierarchies and key negotiation principles are discussed. Also key generation principles on upper layers are shortly discussed.
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