SEMICONDUCTOR DEVICE, UPDATE DATA-PROVIDING METHOD, UPDATE DATA-RECEIVING METHOD, AND PROGRAM

Title:

SEMICONDUCTOR DEVICE, UPDATE DATA-PROVIDING METHOD, UPDATE DATA-RECEIVING METHOD, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2019/142307

Kind Code:

A1

Abstract:

A semiconductor device comprising: a memory (132), a random number generation circuit (135), and a control circuit (131). The memory (132) stores key information, and the random number generation circuit (135) generates a first random number signal and a second random number signal. The control circuit (131) generates a sixth random number signal and a seventh random number signal from the first random number signal and the key information, uses the seventh random number signal for update data to generate encrypted update data, generates the first random number signal and the second random number signal as request signals to be sent to an external terminal device, receives a first response signal and a second response signal from the external device as response signals to the request signals, and generates an eighth random number signal by using the first response signal, the second random number signal, and the sixth random number signal as input signals. When the second response signal and the eighth random number signal match each other, the control circuit (131) provides the encrypted update data to the external terminal device.

Inventors:

MORIYAMA DAISUKE (JP)
SUZUKI DAISUKE (JP)

Application Number:

PCT/JP2018/001521

Publication Date:

July 25, 2019

Filing Date:

January 19, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

RENESAS ELECTRONICS CORP (JP)
MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H04L9/32; G06F21/57

Domestic Patent References:

WO2016020640A1	2016-02-11
WO2006129654A1	2006-12-07

Foreign References:

JP2017022654A	2017-01-26
JP2003150453A	2003-05-23
JP2012093921A	2012-05-17
JP2015103163A	2015-06-04
JP2014182571A	2014-09-29

Other References: