Title:
METHOD FOR PROCESSING PRIVACY DATA OF BLOCK CHAIN, APPARATUS, DEVICE, AND STORAGE MEDIUM
Document Type and Number:
Japanese Patent JP2021189431
Kind Code:
A
Abstract:
To provide a method for processing privacy data of a block chain, and to provide an apparatus, a device, and a storage medium.SOLUTION: A method comprises a step of acquiring a data calculation transaction request initiated by a data user based on a privacy smart contract, where invoking data in the request are data subjected to blind removal processing by the data user. The method further comprises the steps of: acquiring homomorphically encrypted source data according to the request; invoking the privacy smart contract according to a calculation task in the request; performing calculation on the invoking data and the source data to obtain calculation result; and performing an uplink operation on the request and the calculation result to feed the request and the calculation result back to the data user of the request, for the data user to perform homomorphic decryption and the blind removal processing on the calculation result, to acquire a plaintext calculation result.SELECTED DRAWING: Figure 1
Inventors:
DUAN BING
XIAO WEI
XIAO WEI
Application Number:
JP2021026236A
Publication Date:
December 13, 2021
Filing Date:
February 22, 2021
Export Citation:
Assignee:
BAIDU ONLINE NETWORK TECHNOLOGY BEIJING CO LTD
International Classes:
G09C1/00; G06F21/62
Domestic Patent References:
| JP2002535878A | 2002-10-22 | |||
| JPH0380386A | 1991-04-05 | |||
| JP2013125039A | 2013-06-24 | |||
| JP2019035949A | 2019-03-07 |
Foreign References:
| CN109690551A | 2019-04-26 | |||
| CN110033368A | 2019-07-19 | |||
| US20160261404A1 | 2016-09-08 | |||
| US20170289111A1 | 2017-10-05 | |||
| US20200169387A1 | 2020-05-28 |
Other References:
GHADAMYARI, M. AND SAMET, S.: "Privacy-Preserving Statistical Analysis of Health Data Using Paillier Homomorphic Encryption and Per", 2019 IEEE INTERNATIONAL CONFERENCE ON BIG DATA, JPN6022028042, 2019, pages 5474 - 5479, XP033721397, ISSN: 0004977837, DOI: 10.1109/BigData47090.2019.9006231
PAILLIER, P.: "Public-Key Cryptosystems Based on Composite Degree Residuosity Classes", LECTURE NOTES IN COMPUTER SCIENCE, vol. 1592, JPN6022028043, 1999, pages 223 - 238, XP093116565, ISSN: 0004977838, DOI: 10.1007/3-540-48910-X_16
PAILLIER, P.: "Public-Key Cryptosystems Based on Composite Degree Residuosity Classes", LECTURE NOTES IN COMPUTER SCIENCE, vol. 1592, JPN6022028043, 1999, pages 223 - 238, XP093116565, ISSN: 0004977838, DOI: 10.1007/3-540-48910-X_16
Attorney, Agent or Firm:
Fukami patent office