Multi-party data security computing method and system based on privacy computing

• Main Authors: LIAO FANGPING, ZHENG WEIHAI
• Format: Patent
• Language: Chinese; English
• Published: 09.09.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a multi-party data security calculation method and system based on privacy calculation, belongs to the technical field of security multi-party calculation, and is used for solving the problem of poor multi-party security calculation variance effect in related technologies. In the method and the system, a plurality of participants realize calculation of a data mean value under the condition of not leaking own data to the outside, if n participants participate in calculation, each participant divides own data into n parts and sends one part to other n-1 participants, and n-1 parts of data are sent in total, the method comprises the following steps of: receiving data sent by other n-1 participants, receiving data sent by other n-1 participants to obtain a group of data, summarizing the group of data obtained by each participant to one party, summing to calculate the sum of all data of all participants, dividing the sum by n to obtain a mean value of the data of all participants, and calcul