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Preventing excessive use of security keys in a wireless communications security system
Preventing excessive use of security keys in a wireless communications security system
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机译:防止在无线通信安全系统中过度使用安全密钥
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摘要
A start value is x bits in size and is used to provide an initial value to an n-bit security count value. A wireless communications device establishes channels with a compatible device, and releases channels established with the compatible device. For every channel established by the wireless communications device, a corresponding terminal value is obtained. A terminal value for a channel is the highest value reached by the x most significant bits (MSBX) of an n-bit security count value associated with the channel. The security count value is used to encipher data transmitted along the channel. A final value that is obtained that is the greatest value of all the terminal values. Finally, a start value is stored in the memory of the wireless device that is at least as large as the final value.
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机译:起始值的大小为x位,用于将初始值提供给n位安全计数值。无线通信设备与兼容设备建立信道,并释放与兼容设备建立的信道。对于无线通信设备建立的每个信道,获得相应的终端值。通道的终值是与该通道关联的n位安全计数值的x个最高有效位(MSB X Sub>)达到的最大值。安全计数值用于加密沿通道传输的数据。获得的最终值是所有终端值中的最大值。最终,至少与最终值一样大的初始值存储在无线设备的存储器中。
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