Data processing method and apparatus, computer device and computer storage medium

Patent metadata

Field	Value
Publication number	US-12388641-B2
Application number	US-202218256275-A
Country	US
Kind code	B2
Filing date	Jan 25, 2022
Priority date	Feb 9, 2021
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

The present disclosure provides a data processing method and apparatus, a computer device and a computer storage medium, wherein the method includes: performing blinding processing on target information to be transmitted to obtain blinded information; acquiring a plurality of pieces of first encryption information obtained by respectively performing encryption processing on the blinded information by a plurality of service participation ends; performing data fusion on the plurality of pieces of first encryption information to obtain second encryption information; and performing de-blinding processing on the second encryption information to obtain third encryption information as a ciphertext identification corresponding to the target information.

First claim

What is claimed is:

1. A data processing method, comprising:
performing blinding processing on target information to be transmitted to obtain blinded information;
acquiring a plurality of pieces of first encryption information obtained by respectively performing encryption processing on the blinded information by a plurality of service participation ends;
performing data fusion on the plurality of pieces of first encryption information to obtain second encryption information;
performing de-blinding processing on the second encryption information to obtain third encryption information as a ciphertext identification corresponding to the target information, wherein the ciphertext identification corresponding to the target information is used for replacing the target information to be used in a service in which the plurality of service participation ends jointly participate.

2. The method according to claim 1 , wherein the performing blinding processing on target information to be transmitted to obtain blinded information comprises:
performing hash processing on the target information to be transmitted to obtain hash values;
selecting a target random number, and performing blinding processing on the hash values based on a blinding coefficient corresponding to the target random number to obtain the blinded information;
and correspondingly, the performing de-blinding processing on the second encryption information to obtain third encryption information comprises:
determining a de-blinding coefficient corresponding to the target random number, and performing de-blinding processing on the second encryption information in accordance with the de-blinding coefficient to obtain the third encryption information.

3. The method according to claim 1 , wherein the performing data fusion on the plurality of pieces of first encryption information to obtain second encryption information comprises:
performing a multiplication operation on the plurality of pieces of first encryption information, and using a result of the multiplication operation as the second encryption information; or,
performing a division operation on the plurality of pieces of first encryption information to obtain a result, and using the result of the division operation as the second encryption information.

4. The method according to claim 1 , further comprising:
performing legality verification on the third encryption information, wherein the legality verification is used for verifying whether there is illegal first encryption information in the plurality of pieces of first encryption information provided by the plurality of service participation ends;
when the third encryption information does not satisfy legality, determining an illegal target service participation end from the plurality of service participation ends;
performing data re-fusion based on first encryption information generated by other service participation ends than the target service participation end to generate second encryption information, and updating the ciphertext identification corresponding to the target information based on re-synthesized second encryption information; or, sending a ciphertext correction instruction to the target service participation end, acquiring updated first encryption information returned by the target service participation end in response to the ciphertext correction instruction, and updating the ciphertext identification corresponding to the target information based on the updated first encryption information.

5. The method according to claim 1 , further comprising:
sending a multimedia resource launch strategy request to a demand-side platform, the multimedia resource launch strategy request comprising the ciphertext identification corresponding to the target information;
receiving a target multimedia resource launch strategy returned by the demand-side platform, the target multimedia resource launch strategy being a launch strategy determined by the demand-side platform based on the ciphertext identification corresponding to the target information;
performing multimedia resource launch in accordance with the target multimedia resource launch strategy.

6. The method according to claim 1 , further comprising:
when there is a newly added service participation end, sending the target information to the newly added service participation end, and updating the ciphertext identification corresponding to the target information in accordance with first encryption information returned by the newly added service participation end.

7. The method according to claim 1 , further comprising:
when there is a service participation end applying for exit, performing identity legality verification on the service participation end applying for exit, and when legality is verified, updating the ciphertext identification corresponding to the target information based on a private key provided by the service participation end applying for exit.

8. A computer device, comprising a processor and a storage, the storage having stored thereon machine-readable instructions executable by the processor, the processor being configured to execute the machine-readable instructions stored in the storage which, when executed by the processor, implement the following data processing operations:
performing blinding processing on target information to be transmitted to obtain blinded information;
acquiring a plurality of pieces of first encryption information obtained by respectively performing encryption processing on the blinded information by a plurality of service participation ends;
performing data fusion on the plurality of pieces of first encryption information to obtain second encryption information;
performing de-blinding processing on the second encryption information to obtain third encryption information as a ciphertext identification corresponding to the target information, wherein the ciphertext identification corresponding to the target information is used for replacing the target information to be used in a service in which the plurality of service participation ends jointly participate.

9. The computer device according to claim 8 , wherein the performing blinding processing on target information to be transmitted to obtain blinded information comprises:
performing hash processing on the target information to be transmitted to obtain hash values;
selecting a target random number, and performing blinding processing on the hash values based on a blinding coefficient corresponding to the target random number to obtain the blinded information;
and correspondingly, the performing de-blinding processing on the second encryption information to obtain third encryption information comprises:
determining a de-blinding coefficient corresponding to the target random number, and performing de-blinding processing on the second encryption information in accordance with the de-blinding coefficient to obtain the third encryption information.

10. The computer device according to claim 8 , wherein the performing data fusion on the plurality of pieces of first encryption information to obtain second encryption information comprises:
performing a multiplication operation on the plurality of pieces of first encryption information, and using a result of the multiplication operation as the second encryption information; or,
performing a division operation on the plurality of pieces of first encryption information to obtain a result, and using the result of the division operation as the second encryption information.

11. The computer device according to claim 8 , wherein the machine-readable instructions stored in the storage, when executed by the processor, furt

Assignees

• Beijing Bytedance Network Tech Co Ltd

Inventors

• He Peixuan
• Ding Baozeng
• Cai Quanwei
• Wu Ye
• Feng Wei

Classifications

• H04L9/3257

  using blind signatures · CPC title

• H04L9/0869

  involving random numbers or seeds · CPC title

• H04L2209/08

  Randomization, e.g. dummy operations or using noise · CPC title

• H04L9/3073

  involving pairings, e.g. identity based encryption [IBE], bilinear mappings or bilinear pairings, e.g. Weil or Tate pairing · CPC title

• H04L2209/46

  Secure multiparty computation, e.g. millionaire problem · CPC title