Cisco Technology, Inc.

Kevin Holcomb

Yaron Sella

Raghuram S Sudhaakar

Subhasri Dhesikan

Santosh Ramrao Patil

Joel Abraham Obstfeld

Andrew Michael McPhee

Aumen Kwok Lee

Michael Lui

In one embodiment, a device may transmit, via a network to an application, a series of sensor measurements captured by the device, each sensor measurement having an associated timestamp based on a clock of the device. The device may receive, from the application, an indication that at least a portion of the series of sensor measurement were not received by the application. The device may determine, for those sensor measurements not received by the application, timestamp differences between their timestamps and a current time of the clock of the apparatus, after receiving the indication. The device may resend the portion of the series of sensor measurements to the application and their timestamp differences.

Sensor measurement timestamp differences

In one embodiment, a depassivating circuit includes a battery, a resistive load coupled to the battery, and a magnetic field sensor. The magnetic field sensor detects a presence of a magnetic field. The magnetic field sensor depassivates the battery by causing current from the battery to flow through the resistive load, in response to the presence of the magnetic field. The magnetic field sensor detects removal of the magnetic field. The magnetic field sensor ends depassivation of the battery, in response to the removal of the magnetic field.

Depassivating circuitry for sensor batteries

In one embodiment, methods, systems, and apparatus are described in which data to be used by a processor is stored in a memory. Network communications with a data center are enabled via a network interface. The processor maintains a reporting policy for reporting anomalous events to the data center, the reporting policy having at least one rule for determining a reporting action to be taken by the processor in response to an anomalous event. The processor further monitors the IoT device for a report of an occurrence of the anomalous event. The processor performs the reporting action according to the at least one rule, in response to the report of the occurrence of the anomalous event. An episodic update to the reporting policy from the data center may be received at the processor, which modifies the reporting policy in accordance with the update. Related methods, systems, and apparatus are also described.

Alert throttling

In one embodiment, a sender node in a serial network identifies a message identifier for a packet to be sent by the sender node. The sender node selects a cyclical redundancy check (CRC) initialization vector associated with the message identifier. The sender node generates a CRC value for the packet, based on the selected initialization vector. The sender node sends the packet via the serial network. The sent packet includes the message identifier and the generated CRC value. In turn, a receiver node that receives the packet uses the generated CRC value to authenticate the sender node.

Using CRC for sender authentication in a serial network

The secure chain of trust steps to boot-up a computing device are split between the shutdown procedure of the computing device and the boot-up procedure of the computing device to reduce the time required for the computing device to boot-up. The main image associated with a central processing unit of the computing device is validated during the shutdown procedure of the computing device such that the operating system for the central processing unit is available when the computing device receives an action to power on. The boot-up time for the computing device is reduced, which allows the computing device to boot-up within an established time frame.

Split chain of trust for secure device boot

Many modern devices and machines (e.g., Internet of Things (IoT) devices and connected vehicles (CV)) include wireless interfaces that permit external devices to communicate with the devices and machines. These wireless interfaces can be attacked by malicious actors who can affect the operation of the devices or machines. Embodiments herein describe a user controlled actuator (e.g., a knob, set of buttons, switches, etc.) for responding to a wireless attack. Using the actuator, the user can set a response level depending on the threat. Each threat level can elicit a predefined action or set of actions from a control system in the device or machine.

User interface for responding to wireless attacks

In one embodiment, a vehicle having a plurality of network interfaces communicates with a first communication network via a first one of the network interfaces. The vehicle receives performance data regarding the first communication network and one or more other communication network, wherein the received performance data is associated with a particular location. The vehicle determines in advance of arriving at the particular location that the vehicle should switch from communicating with the first communication network to communicating with a selected one of the one or more other communication network, based on the received performance data. At the particular location, the vehicle switches from communicating with the first communication network via the first network interface to communicating with the selected communication network via a second one of the plurality of network interfaces.

Optimizing communications across multiple network interfaces of a connected vehicle

In one embodiment, a technique for performing component self-tests for an in-vehicle network of a vehicle is provided that illustratively comprises: retrieving, by a device in communication with an in-vehicle network (IVN) of a vehicle, a memory sector address of a memory of a component connected to the IVN when a first startup of the vehicle begins, the memory sector address stored in non-volatile memory; performing, by the device, a memory test on a first part of the memory starting at the memory sector address for a predetermined increment during the first startup of the vehicle; and replacing, by the device, the memory sector address with an incremented memory sector address in the non-volatile memory, the incremented memory sector address indicative of the memory sector address incremented by the predetermined increment.

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Apex, NC, United States of America

Kevin Holcomb