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- W4308231291 abstract "Abstract Cloud based data sharing addresses the limited storage availability problem for resource-constrained users. However, most of the techniques for secure data sharing with high access control are computationally intensive. Proxy re-encryption technique is computationally light and provides secure and efficient cloud based data sharing. However, proxy re-encryption has a single semi-trust proxy for all intermediate re-encryption processes which makes it a single point of failure and vulnerable to several attacks. We propose a threshold proxy re-encryption with the proactive property. The shares of re-encryption keys are sent to all proxies using shamir secret sharing. The shares may get leaked with passage of time or when any proxy leaves or joins the network, then, secret needs to be changed every time. The proactive property in threshold proxy re-encryption helps renew the shares without changing the secret. PB-TPRE scheme is collusion resistant against the proxies, users ,and cloud. We present a concrete construction for PB-TPRE that satisfies indistinguishability under chosen-plaintext attacks with a random oracle model and formally proves its security. We compared and discussed PB-TPRE scheme with other threshold proxy re-encryption schemes and found it to be efficient and secure for cloud based data sharing applications" @default.
- W4308231291 created "2022-11-09" @default.
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- W4308231291 date "2022-11-03" @default.
- W4308231291 modified "2023-10-16" @default.
- W4308231291 title "Threshold-Proxy Re-Encryption Scheme with Proactive Property for Secure Data Sharing on Cloud" @default.
- W4308231291 doi "https://doi.org/10.21203/rs.3.rs-2224898/v1" @default.
- W4308231291 hasPublicationYear "2022" @default.
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