This standard defines two classes of security algorithms for IEEE 802.11 networks: — Algorithms for creating and using an RSNA, called RSNA algorithms — Pre-RSNA algorithms 8.1.1 Security methods
Pre-RSNA security comprises the following algorithms: — WEP, described in 8.2.1 — IEEE 802.11 entity authentication, described in 8.2.2 RSNA security comprises the following algorithms: — TKIP, described in 8.3.2 — CCMP, described in 8.3.3 — RSNA establishment and termination procedures, including use of IEEE 802.1X authentication, described in 8.4 — Key management procedures, described in 8.5 8.1.3 RSNA 创建
STA 的 SME(站点管理实体)可通过以下四种方式之一创建 RSNA(健壮安全网络关联):
a) 在 ESS 中利用 IEEE 802.1X 认证与密钥管理(AKM)时
支持 RSNA 的 STA 的 SME 按以下步骤创建 RSNA:
辨认 AP 的 RSNA 本事:通过 AP 的信标帧(Beacon)或探测响应帧(Probe Response)确认 AP 支持 RSNA。
8.4 RSNA security association management — PMKSA: A result of a successful IEEE 802.lX exchange, preshared PMK information, or PMK cached via some other mechanism. — PTKSA: A result of a successful 4-Way Handshake. — GTKSA: A result of a successful Group Key Handshake or successful 4-Way Handshake. 8.5 Keys and key distribution
9,MAC sublayer functional description MAC子层功能描述
10,Layer management 层管理
11,MLME,MAC sublayer management entity,MAC子层管理入口
12,PHY service specification,物理层服务规范
13,PHY management,物理层管理
14,Frequency-Hopping spread spectrum (FHSS) PHY specification for the 2.4 GHz industrial, scientific, and medical (ISM) band,FHSS 跳频--已废弃
15,DSSS PHY specification for the 2.4 GHz band designated for ISM applications,802.11b
16,Infrared (IR) PHY specification 红外--已废弃
17,Orthogonal frequency division multiplexing (OFDM) PHY specification for the 5 GHz band, 802.11a
18,High Rate direct sequence spread spectrum (HR/DSSS) PHY specification,802.11b