Title:
BLOCKCHAIN PRIVACY DATA QUERY METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/082664
Kind Code:
A1
Abstract:
A blockchain privacy data query method and apparatus, applied to blockchain nodes in a blockchain network. The method comprises: receiving a query transaction, initiated by a query party, for target private data, the target private data being encrypted and stored at each blockchain node in the blockchain network (102); determining a query quota, allocated to the query party, for the target private data (104); and when a data query condition is met, reading the target private data into the trusted execution environment of the blockchain nodes for decryption so as to obtain the corresponding decrypted data by the query party, and decreasingly updating the query quota, wherein the data query condition comprises that the query quota has not been exhausted (106).
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Inventors:
LIU QI (CN)
YAN YING (CN)
YAN YING (CN)
Application Number:
PCT/CN2020/110741
Publication Date:
May 06, 2021
Filing Date:
August 24, 2020
Export Citation:
Assignee:
ALIPAY HANGZHOU INF TECH CO LTD (CN)
International Classes:
G06F21/62; G06F16/2458
Domestic Patent References:
| WO2019072297A2 | 2019-04-18 | |||
| WO2019120318A2 | 2019-06-27 |
Foreign References:
| CN111222157A | 2020-06-02 | |||
| CN109214197A | 2019-01-15 | |||
| CN110032884A | 2019-07-19 | |||
| CN109792386A | 2019-05-21 | |||
| CN110049066A | 2019-07-23 |
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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