Метод розподілу зашифрованого зображення за (k,n)-схемою з використанням коаліцій учасників

Abstract

A method for distributing an encrypted image using a (k,n)-scheme based on participant coalitions is proposed. The method involves dividing the encrypted vector into blocks, forming a set of coalitions of size k, assigning blocks to participant shares according to a combinatorial rule, and using a dealer share during recovery. Each block of the encrypted vector is associated with one participant coalition and is not included in the shares of the participants of this coalition, which reduces the size of individual shares compared with an approach in which each participant receives the full amount of encrypted data.