A Fine-grained Conditional Proxy Broadcast ReEncryption Policy for File Sharing System

Ren, Yongjun and Liu, Yepeng and Qian, Chengshan (2019) A Fine-grained Conditional Proxy Broadcast ReEncryption Policy for File Sharing System. In: Mobimedia 2019, 29-30 Oct 2019, Wehai, China.

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Abstract

With the proliferation of electronic devices, cloud storage has become an integral part of synchronizing files between devices. However, data stored on the cloud is vulnerable to unauthorized access during the sharing process. The traditional conditional proxy broadcast re-encryption solution is suitable for the above application scenarios but does not support flexible control of conditions. This article describes the concept of fine-grained conditional proxy broadcast re-encryption (FGC-BPRE). The scheme utilizes an access tree to generate a re-encryption key. If the ciphertext keyword satisfies the conditions in the access tree, the proxy can convert the user's ciphertext into a new ciphertext for a group of users. In addition, this paper also constructs a fine-grained conditional proxy broadcast re-encryption scheme and verifies the security of selective ciphertext attacks without oracles.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: conditional proxy, re-encryption proxy, broadcast re-encryption, cloud storage, secure
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
QA75 Electronic computers. Computer science
Depositing User: EAI Editor I.
Date Deposited: 09 Sep 2020 06:44
Last Modified: 09 Sep 2020 06:44
URI: https://eprints.eudl.eu/id/eprint/82

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