公开(公告)号：WO2023022708A1

公开(公告)日：2023-02-23

申请号：PCT/US2021/046318

申请日：2021-08-17

申请人： GOOGLE LLC

发明人： LIU, Liping ,  KRAHN, Darren, David ,  ZHAO, Xiangjun ,  ZHANG, Ning ,  WANG, Jian ,  PIUS, Roshan

IPC分类号： H04W12/0471 ,  H04W4/02 ,  H04L9/40 ,  G01S13/02 ,  G01S13/76 ,  G01S5/02

摘要： An ultra-wideband (UWB) ranging method comprises determining, by a first device, that the first device is within proximity of a second device. Responsive to the determination, the first device negotiates a value to use as a UWB session key for securing UWB communications with the second device. The negotiation occurs via a communication protocol different from a UWB communication protocol. The first device controls a UWB subsystem therein to encrypt information communicated via the UWB subsystem based on the negotiated value of the UWB session key instead of a default value for the UWB session key that is specified in the UWB communication protocol. The information facilitates determining the distance between the first device and the second device.

公开(公告)号：WO2022271554A1

公开(公告)日：2022-12-29

申请号：PCT/US2022/034010

申请日：2022-06-17

申请人： GOOGLE LLC

发明人： KRAHN, Darren, David

IPC分类号： G06F21/60 ,  G06F21/57 ,  G06F21/44 ,  H04L9/08 ,  H04L9/32 ,  G06F21/602 ,  H04L9/0877 ,  H04L9/0891 ,  H04L9/0894 ,  H04L9/3263

摘要： Apparatus and methods related to receiving, by a secure component and from a client computing device via a secure communication channel, input data for a task associated with the client computing device, wherein the task is based on a device identifier composition engine (DICE) protocol, and wherein the secure component is to perform a cryptographic subtask of the task; receiving, by the secure component and from the client computing device via the secure communication channel, context data associated with the cryptographic subtask; executing, by the secure component, the cryptographic subtask based on the input data and the context data; and providing, by the secure component and to the client computing device via tiie secure communication channel, an output of the cryptographic subtask.