Data processing method, device and system and storage medium

Some embodiments of the invention provide a data processing method, device and system and a computer readable storage medium. The method comprises the following steps: a first device obtains a first substring set of a first character string set, wherein the first substring set comprises N characters at a first set position in each character string in the first character string set; the second device obtains a second substring set of the second character string set, wherein the second substring set comprises N characters of each character string in the second character string set at the first set position; the second device matches the second substring set with the first substring set to obtain a first matching result; and the first device and the second device screen a third character string set and a fourth character string set from the first character string set according to the first matching result, wherein the third character string set and the fourth character string set are used for determining an inte