公开(公告)号：US20070250938A1

公开(公告)日：2007-10-25

申请号：US11626639

申请日：2007-01-24

Applicant: Gookwon Suh ,  Srinivas Devadas

Inventor： Gookwon Suh ,  Srinivas Devadas

IPC: G08B29/00

CPC classification number: G06F21/31 ,  G06F21/73 ,  G06F2221/2129 ,  H04L9/0866 ,  H04L2209/12

Abstract: Subsets of multiple signal generator circuits embodied in a device are selected, and then a volatile value for the device is generated from the selected subsets. The volatile value may be used for authentication of the device and/or for cryptographic procedures performed on the device. The signal generator circuits may each comprise an oscillator circuit, and the selection of the subsets may be according to a comparison of the outputs of the subsets of circuits, for example, according to a comparison of output oscillation frequencies.

Abstract translation: 选择体现在设备中的多个信号发生器电路的子集，然后从所选择的子集产生装置的易失性值。 易失性值可以用于设备的认证和/或用于在设备上执行的密码过程。 信号发生器电路可以各自包括振荡器电路，并且子集的选择可以根据电路子集的输出的比较，例如根据输出振荡频率的比较。