RLWE-based ciphertext-policy attribute proxy re-encryption |
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Authors: | En ZHANG Yaoyao PEI Jiao DU |
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Affiliation: | 1. College of Computer and Information Engineering,Henan Normal University,Xinxiang 453007,China;2. Engineering Lab of Intelligence Bussiness &Internet of Things of Henan Province,Xinxiang 453007,China;3. College of Mathematics and Information Science,Henan Normal University,Xinxiang 453007,China |
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Abstract: | To solve LWE-based proxy re-encryption schemes cannot achieve fine-grained access and low efficiency problem,a ciphertext-policy attribute-based proxy re-encryption scheme was proposed.The scheme based on linear secret sharing scheme,RLWE and attribute encryption could shorten the key size,reduce the ciphertext space and improve the efficiency of encryption and decryption.At the same time,the linear secret sharing matrix was used as an access matrix to meet the requirements of authorized person fine-grained commissioning control and to resist the collusion between the agent and the authorized person.In addition,the proposed scheme is shown to be secure under the ring learning with errors assumption in the standard model. |
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Keywords: | proxy re-encryption RLWE attribute encryption linear secret sharing scheme fine-grained access |
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