This document summarizes a research paper on a reference model for open storage systems interconnection with mass storage using key-aggregate cryptosystem. The paper proposes a key-aggregate cryptosystem framework to efficiently and securely share encrypted data across distributed storage. This allows data owners to assign access privileges to other users without increasing key sizes. The framework aggregates multiple secret keys into a single key of the same size. It reduces costs and complexity compared to traditional approaches requiring transmission of individual decryption keys. The proposed model aims to enable practical, secure and adaptable information sharing for distributed storage applications.