Unlock instant, AI-driven research and patent intelligence for your innovation.

Data key updating method and device

A data key and update method technology, which is applied in the security field and can solve security risks and other issues

Pending Publication Date: 2022-01-25
HUAWEI TECH CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In some embodiments, the aforementioned data key for processing the data message is immutable, once the data key is cracked, it may bring certain security risks

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data key updating method and device
  • Data key updating method and device
  • Data key updating method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0500] Embodiments of the present application provides a method for updating the data key can be avoided because the key is decrypted and data security risks.

[0501] To facilitate understanding, embodiments possible application scenario of the first embodiment of the present application are described.

[0502] See figure 1 The picture shows a schematic view of an exemplary application scenario.

[0503] like figure 1 The in-vehicle information box (telematics-box, T-Box) comprises a network access device (networkaccess device, NAD) 101 and a microcontroller (micro controller unit, MCU) 102. Wherein, NAD 101 may be in communication equipment and exterior, MCU 102 may, for example the vehicle and the other vehicle communication MCU other devices. in:

[0504] NAD sufficient computing resources 101, the central processor 101 of the NAD (central processing unit, CPU) computing power is relatively strong.

[0505] MCU relatively less computing resource 102, e.g., random access memory...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention provides a data key updating method. A first data key is stored in a first communication device, and the first data key is used for processing a data message interacted between the first communication device and a second communication device in an aging period of the first data key. The first communication device receives a first protocol message sent by the second communication device in the aging period of the first data key, the first protocol message is not a message based on MKA, the first protocol message comprises a first data key material, and the first data key material is used for generating a second data key. The second data key is used for processing the data message interacted between the first communication device and the second communication device in the aging period of the second data key. Therefore, the data key stored in the first communication device is no longer unchanged, so that the possibility that the data key in the first communication device is cracked is reduced, and the security risk caused by cracking of the data key is correspondingly avoided.

Description

[0001] The present application requests the Chinese Patent Office on July 25, 2020, and the application number is 202010740829.0, the present invention is the priority of Chinese patent applications for "a safety communication method, device and system", and all of its content is incorporated herein. Application. Technical field [0002] The present application relates to the field of safety technology, and more particularly to an update method and apparatus for a data key. Background technique [0003] In order to ensure the data security of the two communication devices such as the first communication device and the second communication device, the data packets interact between the two communication devices can be processed by the data key, for example, encryption. The key is encrypted on the important information in the data packet, and can also utilize the integrity computing key to calculate the integrity verification information of the data packet. [0004] In some embodimen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L9/40H04L9/08
CPCH04L63/083H04L63/06H04L63/123H04L9/0891H04L9/0869H04L63/0442H04L9/0838H04L9/3273H04L2463/062H04L63/068H04L63/0846H04L63/0876H04L9/085H04L9/0861
Inventor 盛德胡中华张舒王静怡张浩
Owner HUAWEI TECH CO LTD