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BSSID Basic service set identifier. The 48-bit media access control (MAC)
address of the radio in the access point (AP) that serves the stations in
a basic service set (BSS).
CA See certificate authority (CA).
CBC-MAC See CCMP.
CCI Co-channel interference. Obstruction that occurs when one signal on a
particular frequency intrudes into a cell that is using that same
frequency for transmission. In multicell networks, systems are designed
to minimize CCI through appropriate transmission power and channel
CCMP Counter-Mode with Cipher Block Chaining Message Authentication
Code Protocol. A wireless encryption protocol based on the Advanced
Encryption Standard (AES) and defined in the IEEE 802.11i specification.
CCMP uses a symmetric key block cipher mode that provides privacy by
means of counter mode and data origin authenticity by means of
cipher block chaining message authentication code (CBC-MAC). See
also 802.11i; AES; TKIP; WPA. Compare WEP.
cell The geographical area covered by a wireless transmitter.
Network software that issues and manages security credentials and
public keys for authentication and message encryption. As part of a
public-key infrastructure (PKI), which enables secure exchanges of
information over a network, a certificate authority checks with a
registration authority (RA) to verify information provided by the
requestor of a digital certificate. If the registration authority verifies the
requestor’s information, the certificate authority can issue a certificate.
Based on the PKI implementation, the certificate content can include
the certificate’s expiration date, the owner’s public key, the owner’s
name, and other information about the public-key owner. See also
registration authority (RA).