Privacy Preserving Matchmaking Method Using Cloud in Encounter Based Mobile Social Networks and System Therefor

摘要

According to an embodiment of the present invention, a matchmaking method in an encounter-based mobile social network comprises: a step of setting an encounter sharing key; a step of receiving a first matching matter-of-interest set, calculated based on a first matter-of-interest set of a first user and a second matter-of-interest set of a second user, from a second user and encrypting the same with the encounter sharing key to provide the same to the first user; a step of receiving a second matching matter-of-interest set, calculated based on the first matter-of-interest set and the second matter-of-interest set, from the first user and encrypting the same with the encounter sharing key to provide the same to the second user; a step of receiving the number of first matter-of-interest calculated based on the first matching matter-of-interest set from the first user, and receiving the number of second matter-of-interest calculated based on the second matching matter-of-interest set from the second user; and a step of matchmaking the first user and the second user as friends if the received number of first matter-of-interest and the received number of second matter-of-interest are equal.