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    • 14. 发明申请
    • AUTHENTICATED KEY EXCHANGE USING DISTANCE BOUNDING PROTOCOL
    • 使用距离约束协议的认证密钥交换
    • WO2011131745A1
    • 2011-10-27
    • PCT/EP2011/056387
    • 2011-04-20
    • ETH ZÜRICHRASMUSSEN, Kasper, BonneCAPKUN, Srdjan
    • RASMUSSEN, Kasper, BonneCAPKUN, Srdjan
    • H04L9/32
    • H04W12/06G09C1/00H04K1/04H04L9/0841H04L9/3215H04L9/3271H04W12/04
    • The method for communicating between a first device and a second device comprises the steps of the first and second device communicating by exchanging messages that are based on signals that are transmitted through a plurality of communication channels; the first device sending a challenge message to the second device over one communication channel; the second device sending upon reception of the challenge message a response message to the first device through at least two communication channels that have essentially identical signal propagation velocities; the first device measuring the time elapsed between the sending of the challenge message to the reception of the response message; the first device computing its distance to the second device based on this time, knowledge about travelling speed of the challenge and the response message and the processing delay that the second device adds to generate and send the response message; wherein the second device encodes its response message essentially by choosing a subset of the at least two communication channels; generates said response message purely through an analogue signal processing means.
    • 用于在第一设备和第二设备之间进行通信的方法包括通过交换基于通过多个通信信道发送的信号的消息来进行通信的第一和第二设备的步骤; 第一设备通过一个通信信道向第二设备发送质询消息; 所述第二设备通过具有基本上相同的信号传播速度的至少两个通信信道,在接收到所述质询消息时发送响应消息给所述第一设备; 所述第一设备测量在所述询问消息发送到所述响应消息的接收之间经过的时间; 第一设备基于该时间计算其到第二设备的距离,关于质询的行进速度和响应消息的知识以及第二设备添加以产生和发送响应消息的处理延迟; 其中所述第二设备基本上通过选择所述至少两个通信信道的子集来对其响应消息进行编码; 纯粹通过模拟信号处理装置产生所述响应消息。
    • 17. 发明申请
    • A METHOD OF PROVIDING SECURE TRANSMISSION FOR FACSIMILE DATA MODEM SIGNALS
    • 提供安全传输用于FACSIMILE数据调制解调器信号的方法
    • WO00067409A3
    • 2001-01-25
    • PCT/US2000/011573
    • 2000-04-28
    • H04K1/04H04N1/44
    • H04K1/04H04N1/448
    • A method of operating a security device to secure the transmission of data between authorized modems and against interception by A method of operating a security device to secure the transmission of data between authorized modems and against interception by an unauthorized modem. The modems each implement a defined protocol that includes negotiation and data transport portions of a communications session that is conducted over a network utilizing signals selectively occurring in a plurality of frequency channels. The security device includes a first interface coupleable to a modem to exchange first predetermined signals occurring in a first plurality of frequency channels and a second interface coupleable to a network to exchange second predetermined signals occuring in a second plurality of frequency channels. A signal processor is coupled between the first and second interfaces, to implement a bi-directional conversion of the signals between the first and second plurality of frequency channels by frequency shifting the first and second predetermined signals between the first and second pluralities of frequency channels. Further, the security device can provide for a first frequency shift of greater than a predetermined frequency tolerance specified by the defined protocol for a first portion of said communications session and a second frequency shift for a second portion of the communications session.
    • 一种操作安全设备以确保在授权的调制解调器之间的数据传输和通过操作安全设备的方法来确保数据在授权的调制解调器之间的传输并且被未经授权的调制解调器拦截的方法。 调制解调器各自实现定义的协议,其包括利用在多个频率信道中有选择地出现的信号通过网络进行的通信会话的协商和数据传输部分。 该安全设备包括可耦合到调制解调器以交换出现在第一多个频率信道中的第一预定信号的第一接口和可耦合到网络的第二接口,以交换在第二多个频率信道中发生的第二预定信号。 信号处理器耦合在第一和第二接口之间,以通过在第一和第二多个频率信道之间频移第一和第二预定信号来实现第一和第二多个频率信道之间的信号的双向转换。 此外,安全设备可以提供大于由所定义的协议规定的用于所述通信会话的第一部分的预定频率容限的第一频移,以及通信会话的第二部分的第二频移。
    • 18. 发明申请
    • AN APPARATUS FOR PROVIDING SECURE TRANSMISSION FOR FACSIMILE DATA MODEM SIGNALS
    • 提供安全传输用于FACSIMILE数据调制解调器信号的装置
    • WO00067467A1
    • 2000-11-09
    • PCT/US2000/011729
    • 2000-04-28
    • H04K1/04H04N1/44
    • H04K1/04H04N1/44H04N1/448
    • A security device operates to secure the transmission of data between authorized modems and against interception by an unauthorized modem. The modems each implement a defined protocol that includes negotiation and data transport portions of a communications session that is conducted over a network utilizing signals selectively occurring in a plurality of frequency channels. The security device includes a first interface coupleable to a modem to exchange first predetermined signals occurring in a first plurality of frequency channels and a second interface coupleable to a network to exchange second predetermined signals occurring in a second plurality of frequency channels. A signal processor is coupled between the first and second interfaces, to implement a bi-directional conversion of the signals between the first and second plurality of frequency channels by frequency shifting the first and second predetermined signals between the first and second pluralities of frequency channels. Further, the security device can provide for a first frequency shift of greater than a predetermined frequency tolerance specified by the defined protocol for a first portion of said communications session and a second frequency shift for a second portion of the communications session.
    • 安全设备用于确保在授权的调制解调器之间的数据传输和未经授权的调制解调器的拦截。 调制解调器各自实现定义的协议,其包括利用在多个频率信道中有选择地出现的信号通过网络进行的通信会话的协商和数据传输部分。 该安全设备包括可耦合到调制解调器以交换出现在第一多个频率信道中的第一预定信号的第一接口和可耦合到网络的第二接口,以交换出现在第二多个频率信道中的第二预定信号。 信号处理器耦合在第一和第二接口之间,以通过在第一和第二多个频率信道之间频移第一和第二预定信号来实现第一和第二多个频率信道之间的信号的双向转换。 此外,安全设备可以提供大于由所定义的协议规定的用于所述通信会话的第一部分的预定频率容限的第一频移,以及通信会话的第二部分的第二频移。
    • 19. 发明申请
    • A METHOD OF PROVIDING SECURE TRANSMISSION FOR FACSIMILE DATA MODEM SIGNALS
    • 提供安全传输用于FACSIMILE数据调制解调器信号的方法
    • WO0067409A2
    • 2000-11-09
    • PCT/US0011573
    • 2000-04-28
    • AMIK INC
    • COLLETT GORDON CGALE GARY A
    • H04K1/04H04N1/44H04K
    • H04K1/04H04N1/448
    • A method of operating a security device to secure the transmission of data between authorized modems and against interception by A method of operating a security device to secure the transmission of data between authorized modems and against interception by an unauthorized modem. The modems each implement a defined protocol that includes negotiation and data transport portions of a communications session that is conducted over a network utilizing signals selectively occurring in a plurality of frequency channels. The security device includes a first interface coupleable to a modem to exchange first predetermined signals occurring in a first plurality of frequency channels and a second interface coupleable to a network to exchange second predetermined signals occuring in a second plurality of frequency channels. A signal processor is coupled between the first and second interfaces, to implement a bi-directional conversion of the signals between the first and second plurality of frequency channels by frequency shifting the first and second predetermined signals between the first and second pluralities of frequency channels. Further, the security device can provide for a first frequency shift of greater than a predetermined frequency tolerance specified by the defined protocol for a first portion of said communications session and a second frequency shift for a second portion of the communications session.
    • 一种操作安全设备以确保在授权的调制解调器之间的数据传输和通过操作安全设备的方法来确保数据在授权的调制解调器之间的传输并且被未经授权的调制解调器拦截的方法。 调制解调器各自实现定义的协议,其包括利用在多个频率信道中有选择地出现的信号通过网络进行的通信会话的协商和数据传输部分。 该安全设备包括可耦合到调制解调器以交换出现在第一多个频率信道中的第一预定信号的第一接口和可耦合到网络的第二接口,以交换在第二多个频率信道中发生的第二预定信号。 信号处理器耦合在第一和第二接口之间,以通过在第一和第二多个频率信道之间频移第一和第二预定信号来实现第一和第二多个频率信道之间的信号的双向转换。 此外,安全设备可以提供大于由所定义的协议规定的用于所述通信会话的第一部分的预定频率容限的第一频移,以及通信会话的第二部分的第二频移。