Verifiable memory leakage prevention dynamic searchable encryption method and cloud server

Abstract

The invention belongs to the technical field of cloud computing and discloses a verifiable memory leakage prevention dynamic searchable encryption method and a cloud server. A data owner is used for establishing an index and an encryption file set, outsourcing the index and the encryption file set to the cloud server, submitting a keyword trap door search related file to the cloud server and verifying returned search results. The data owner also can be used for updating the encryption file set. The cloud server is used for storing the encryption file set and the index, carrying out searching on the index according to a trap door, returning corresponding results and evidences and updating the corresponding evidences according to the updating operation of the data owner. The invention provides the first memory information leakage prevention and verifiable dynamic searchable symmetric encryption scheme. The key security and the search result accuracy and integrity are ensured. The problemthat the key generation of physical unclonable functions is instable is solved, and a relatively reliable key generation mechanism is established.

Description

technical field [0001] The invention belongs to the technical field of cloud computing, and in particular relates to a verifiable anti-memory leakage dynamic searchable encryption method and a cloud server. Background technique [0002] In the information age, more and more resources are gathered on the Internet. In order to efficiently manage and utilize Internet resources, cloud computing appears in people's sight as a scalable and high-throughput computing paradigm. Cloud computing can provide powerful data storage capabilities, and more and more individuals and companies are willing to outsource data to cloud servers. Cloud outsourcing storage services can reduce the huge local data management overhead of data owners. However, data outsourcing will inevitably bring some data security and privacy issues. Therefore, the data owner usually outsources the encrypted data, but this brings about the problem of how to perform keyword retrieval on the ciphertext. In order to ...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is that the existing symmetric searchable encryption methods cannot resist memory attacks and malicious servers at the same time, which is manifested in the following two aspects: First, the existing verifiable symmetric encryption methods for malicious servers Searchable encryption methods simply assume that the key is stored in non-volatile memory. Once an attacker uses methods such as side channel attacks to obtain the key in memory, the verification of these verifiable symmetric searchable encryption methods will become invalid. ; Second, the existing symmetric searchable encryption method against memory attack cannot verify the search results

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