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公开(公告)号:KR1020120105283A
公开(公告)日:2012-09-25
申请号:KR1020110023004
申请日:2011-03-15
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and method for encrypting input information on a keyboard are provided to safely share a user area and a kernel area using a DH(Diffie-Hellman) key sharing method. CONSTITUTION: Key sharing for keyboard security is requested(S100). A keyboard input information encryption device shares an initial KEK(Key Encryption Key) of a user area and a kernel space by using a DH key sharing method(S200). The keyboard input information encryption device synchronizes the KEK before a CEK(Content Encryption Key) shared between the kernel area and the user area is updated(S300). The keyboard input information encryption device updates the CEK by using the KEK(S400). The keyboard input information encryption device decodes keyboard input information by using the CEK(S500). The keyboard input information encryption device determines the update of the CEK(S600). The keyboard input information encryption device determines the CEK update or the termination of a keyboard security module(S700). [Reference numerals] (AA) Start; (BB,DD,FF) No; (CC,EE,GG) Yes; (HH) End; (S100) Key sharing request; (S200) KEK sharing; (S300) KEK synchronization; (S400) CEK updating; (S500) Keyboard input value encryption; (S600) CEK updating?; (S700) Final field for a key board input?
Abstract translation: 目的:提供用于加密键盘上的输入信息的装置和方法,以使用DH(Diffie-Hellman)密钥共享方法来安全地共享用户区域和内核区域。 规定:请求键盘安全的密钥共享(S100)。 键盘输入信息加密装置通过使用DH密钥共享方法共享用户区域和内核空间的初始KEK(密钥加密密钥)(S200)。 键盘输入信息加密装置在更新内核区域与用户区域之间共享的CEK(内容加密密钥)之前,使KEK同步(S300)。 键盘输入信息加密装置使用KEK更新CEK(S400)。 键盘输入信息加密装置使用CEK解码键盘输入信息(S500)。 键盘输入信息加密装置确定CEK的更新(S600)。 键盘输入信息加密装置确定CEK更新或键盘安全模块的终止(S700)。 (附图标记)(AA)开始; (BB,DD,FF)否; (CC,EE,GG)是; (HH)结束; (S100)密钥共享请求; (S200)KEK共享; (S300)KEK同步; (S400)CEK更新; (S500)键盘输入值加密; (S600)CEK更新? (S700)键盘输入的最终字段?
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公开(公告)号:KR101219664B1
公开(公告)日:2013-01-21
申请号:KR1020110023004
申请日:2011-03-15
Applicant: 한국전자통신연구원
Abstract: 본 발명은 키보드 입력정보 암호화 장치 및 그 방법에 관한 것이다. 키보드 입력정보 암호화 장치는 디피 헬먼법(Diffie-Hellman, DH) 키 공유 방식을 이용하여 커널영역과 유저영역에서 암호용키(key encryption key, KEK)를 공유하는 키 공유부, 커널영역과 유저영역에서 암호용키를 이용하여 키보드 입력정보의 암호키에 해당하는 세션키(Content encryption key, CEK)를 업데이트하는 업데이트부 및 키보드 입력정보를 커널영역에서 세션키를 이용하여 암호화하는 암호화부를 포함한다.
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公开(公告)号:KR1020020097388A
公开(公告)日:2002-12-31
申请号:KR1020010035176
申请日:2001-06-20
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2656 , H04B2001/6912 , H04L27/2614
Abstract: PURPOSE: A method for synchronizing a frame using a chirp signal is provided to accurately synchronize the frame by calculating a correlation function on a time axis of a receiving signal and a synchronous chirp signal, estimating a start point of the frame, obtaining an interval between peak generation times of the correlation function and a period difference of the synchronous chirp signal when a frequency offset is generated, and estimating the frequency offset. CONSTITUTION: A frame including the first guide interval, the first synchronous burst signal, the second guide interval, the second synchronous burst signal, and a transmission frame is transmitted(S1). A receiving unit receives the frame, and detects the first synchronous burst signal and the second synchronous burst signal(S2). The receiving unit calculates correlation functions corresponding to the first and second synchronous burst signals using the first and second synchronous burst signals(S3). The receiving unit calculates peak generation times as to the calculated correlation functions(S4). The receiving unit calculates a frame start point mobility using the calculated peak generation times(S5). The receiving unit calculates a frequency offset(S6), and calculates a frame start point(S7).
Abstract translation: 目的:提供一种使用啁啾信号同步帧的方法,以通过计算接收信号和同步线性调频信号的时间轴上的相关函数来精确地同步该帧,估计帧的起始点,获得帧之间的间隔 相关函数的峰值生成时间和产生频率偏移时的同步线性调频脉冲信号的周期差,并且估计频率偏移。 构成:发送包括第一引导间隔,第一同步突发信号,第二引导间隔,第二同步突发信号和发送帧的帧(S1)。 接收单元接收该帧,并且检测第一同步脉冲串信号和第二同步脉冲信号(S2)。 接收单元使用第一和第二同步脉冲串信号计算与第一和第二同步脉冲串信号相对应的相关函数(S3)。 接收单元计算关于所计算的相关函数的峰值生成时间(S4)。 接收单元使用所计算的峰值生成时间来计算帧起点移动性(S5)。 接收单元计算频率偏移(S6),并计算帧起始点(S7)。
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