Encryption device, encryption method, decryption device, and decryption method

五十部 孝典 Takanori (Inventor), Andrey ボグダノフ アンドレイ (Inventor)

Research output: Patent

32 Downloads (Pure)

Abstract

[Problem] To ensure strong security in a white-box model without the use of random numbers. [Solution] This encryption device is provided with: an encryption unit which encrypts input values by means of a black-box model, in which input and output values can be recognized from the outside and intermediate values cannot be recognized from the outside; and a key generation unit which encrypts input values of the encryption unit by means of a white-box model, in which input and output values and intermediate values can be recognized from the outside, and generates an encryption key of the encryption unit.

Original languageEnglish
IPCG09C 1/ 00 A I
Patent numberWO2019031026
CountryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date10/08/2017
Priority numberJP20170156143
Publication statusPublished - 14 Feb 2019

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