Hitachi Astemo Ltd.

Shun Kinugasa

Yusuke Abe

Kenji Ando

Kosuke Sumiya

Atsushi Hironaka

An electronic control device according to the present invention for resuming an interrupted encrypted writing process, wherein a first data block included in the updated data is encrypted by using a second data block, and when the writing processing for writing the first data block to the storage unit is interrupted while in progress, updated data which includes both the first data block and the second data block is reacquired, after which the first data block is decoded again by using the reacquired second data block.

Electronic control device with secure resumption of interrupted write processing

Provided is a technique for enabling software having different memory maps to be written in a nonvolatile memory of an electronic control device in reprogramming of control software. The electronic control device includes a microcomputer including a CPU and a nonvolatile memory. The nonvolatile memory includes activation software, control software, and validity confirmation information for confirming validity of the control software. A storage area of the validity confirmation information in the nonvolatile memory is different from a storage area of the activation software.

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Hitachinaka, Japan

Shun Kinugasa