Method and device for identifying illegal data of second party by first party

• Main Authors: DU JIFENG, CAI XIAOJUAN, YOU ZHIQIANG, YANG YUNBO, WANG ZHAOKAI, BIAN YANG, CHEN LIFENG, ZHAO DONG, ZHANG WEIQI
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The embodiment of the invention provides a method and device for identifying illegal data of a second party by a first party. The method is performed by a first party. The method comprises the steps of obtaining a first data fragment set of a second party; jointly determining a random sampling proportion for randomly sampling the first data fragment set with the second party; determining a reference random number for each first data fragment in combination with the second party, wherein the reference random numbers conform to uniform distribution; sampling a specified first data fragment from the first data fragment set by using the first sampling proportion fragment and the first reference random number fragment in combination with the second party; each specified first data fragment is combined with a second party to compare the to-be-identified data corresponding to the specified first data fragment with the numerical range which the to-be-identified data should accord with; and determining that illegal da