Secret sharing scheme for cloud computing using IDs

Secret sharing schemes can be used in cloud computing to allow many participants to distribute multiple data. However, the application of (k, n) secret sharing to cloud systems causes a large increase in storage capacity, making it unsuitable for systems with many secrets to distribute. Moreover, using the ramp scheme to reduce the required storage capacity causes gradual information leakage. Therefore, in this paper, we propose a new secret sharing scheme that is computationally secure and can reduce the number of shares. We compare the proposed method with conventional schemes.