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Method and device for transmitting data

A data and data group technology, applied in the field of data transmission, can solve problems such as human injury

Active Publication Date: 2022-01-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If such malfunctions involve safety-relevant components, in the worst case, people can be injured

Method used

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  • Method and device for transmitting data
  • Method and device for transmitting data
  • Method and device for transmitting data

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] figure 1 The diagram illustrates the essential features of one embodiment of the invention. Thus, 17 pairs of data sets to be transmitted are created in the sender 12, 13 at the security level of the main processor (central processing unit CPU) of said sender 12, 13, said data sets It consists of a safety-relevant data field 37 and further data fields 38 , the integrity of the first data set 16 being maintained by measures suitable for functional safety, in particular a continuity counter 36 . In a second step, the first data set 16 is handed over by the main processor 12 of the sender 12 , 13 to the hardware security module 13 of said sender 12 , 13 . In a third step, a first message authentication code 18 is calculated 19 from the first data set 16 by the hardware security module 13 of the sender 12 , 13 . In a fourth step, the first data set 16 is passed through the main processor 12 of the sender 12, 13 by means of a function which can be unambiguously reversed (i...

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Abstract

The present invention relates to methods and devices for transmitting data. A method for transmitting data, characterized in that the first data set is made by the main processor of the sender and handed over to the hardware security module of the sender by the main processor of the sender; The hardware security module calculates the first message authentication code according to the first data group; through the main processor of the sender, the first data group is mapped to the second data group by means of a function that can be clearly reversed; the second data The group is handed over to the hardware security module of the sender by the main processor of the sender; through the latter, the second data group is mapped onto the first data group by means of the inverse function of said function; through the hardware security module of the sender, the programming The plain text comprising the first data set and the first message authentication code is encrypted into a secret text; the secret text is handed over by the sender's hardware security module to the sender's main processor and sent via the latter to the receiver.

Description

technical field [0001] The invention relates to a method for transmitting data. Furthermore, the present invention also relates to a corresponding device, a corresponding computer program and a corresponding storage medium. Background technique [0002] With the ever-increasing complexity of electronic components in vehicles, the probability of malfunctions also increases. If such malfunctions involve safety-relevant components, people can be injured in the worst case. The international standard ISO 26262 (Road vehicles - Functional safety) is intended to ensure the functional safety of systems with electrical or electronic components in road vehicles. [0003] In this case, standard behavioral models provide that, within the scope of hazard analysis and risk estimation, possible hazards due to malfunctions of the systems under examination are identified in specific driving situations. Then, according to different criteria, a motor vehicle-specific safety level (automotiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40H04L9/32H04L9/06
CPCH04L9/0625H04L9/0631H04L9/32H04L63/0435H04L63/123H04L9/3234H04L2209/127G09C1/00H04L2209/72H04L9/3242
Inventor J.施拉姆B.舍汉F.阿纳特M.施赖贝尔T.哈特根W.施塔德勒
Owner ROBERT BOSCH GMBH