FIELD: physics.
SUBSTANCE: invention relates to data protection means and can be used for joint calculations by two or more parties without disclosing secret data used to each other. Method and device generate first and second secret data sets, where first and second secret datasets use user identifiers, first secret dataset comprises user ratings mapped to user identifiers, and the second secret data set for each of the user identifiers comprises an array of user identifiers from the social environment of the respective users, user identifiers from the social environment of the selected user are used to calculate the social rating of the selected user as a function of the number of users from the social environment and user ratings from the social environment. Social ratings of users are transmitted in encrypted form.
EFFECT: technical result is securing large volumes of data belonging to different parties, and reducing memory.
33 cl, 3 dwg
