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 language | English |
|---|---|
| IPC | G09C 1/ 00 A I |
| Patent number | WO2019031026 |
| Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
| Priority date | 10/08/2017 |
| Priority number | JP20170156143 |
| Publication status | Published - 14 Feb 2019 |