公开(公告)号：KR1020080060925A

公开(公告)日：2008-07-02

申请号：KR1020060135559

申请日：2006-12-27

Applicant: 삼성전자주식회사

Inventor： 김은아 ,  이정현 ,  정태철 ,  알렉시포민 ,  예브게니린스키 ,  미카일스테파노프 ,  세르게이베자트프

IPC: H04B7/26 ,  H04L1/00

CPC classification number: H04L9/14 ,  H04L9/3239 ,  H04L2209/38 ,  H04L2209/601 ,  H04W12/06 ,  H04W84/12

Abstract: A method for protecting a broadcast frame, a terminal for authenticating the broadcast frame and an AP(Access Point) for broadcasting the broadcast frame are provided to check effectiveness of a key via a symmetric encryption scheme and to authenticate a BMF(Broadcast Management Frame) as soon as the BMF is received. A method for protecting a broadcast frame comprises the following two steps. An AP broadcasts a beacon and an MBF(Maintenance Beacon Frame) to plural terminals for an MBWP(Maintenance Beacon Waiting Period). The AP broadcasts at least BMF during a BMFWP(Broadcast Maintenance Beacon Waiting Period). The step S310 can be divided into two following sub-steps. The AP generates the MBF including a previous key for a previous beacon cycle, a beacon message integrity code, a BMF number transmitted to a current beacon cycle and a message integrity code(S311) and broadcasts the MBF to the plural terminals(S312).

Abstract translation: 提供一种用于保护广播帧的方法，用于认证广播帧的终端和用于广播广播帧的AP（接入点）），以通过对称加密方案来检查密钥的有效性并且验证BMF（广播管理帧） 一旦收到BMF。 一种用于保护广播帧的方法包括以下两个步骤。 AP为MBWP（维护信标等待周期）的多个终端广播信标和MBF（维护信标帧）。 在BMFWP（广播维护信标等待期）期间，AP至少播放BMF。 步骤S310可以分为以下两个子步骤。 AP产生包括先前信标周期的先前密钥的MBF，信标消息完整性码，发送到当前信标周期的BMF号码和消息完整性码（S311），并向多个终端广播MBF（S312）。