A cloud storage encryption, decryption and verification method and system

Abstract

This application discloses a cloud storage encryption, decryption and verification method and system, which is applied to a data upload terminal, including: generating temporary ciphertext in advance using the encryption parameters used for encryption in the system public parameters; using the system public parameters for verification Complete data verification parameters, temporary ciphertext, plaintext data, and access structure to generate outsourced ciphertext; send outsourced ciphertext to the cloud server; this application pre-uses system public parameters for encryption when the data upload terminal has sufficient energy The encryption parameters are used to generate temporary ciphertext, and the part of the encryption process that consumes too much energy in the encryption process using the system public parameters for encryption is preprocessed in advance, so that even in the case of insufficient energy, the amount of calculation when encrypting data is reduced. And energy consumption, you can directly use the temporary ciphertext, verification parameters, plaintext data and access structure to generate outsourced ciphertext, shorten the encryption time, and reduce the amount of calculation and energy consumption.

Description

technical field [0001] The invention relates to the field of cloud storage ciphertext access control, in particular to a cloud storage encryption, decryption and verification method and system. Background technique [0002] Attribute-based encryption (ABE) is a scalable one-to-many encryption mechanism that allows users to encrypt and decrypt data based on user attributes, and is ideal for flexible and fine-grained access to encrypted data stored in the cloud control. One of the main defects of the traditional ABE scheme is that the encryption and decryption operations increase with the increase of the complexity of the access strategy, and the resulting computational overhead is a fatal bottleneck for resource-constrained mobile devices (such as mobile phones). [0003] However, in practical applications, users may need to use mobile devices to perform encryption and decryption work. The calculation amount generated by the existing encryption and decryption process consume...

AI Technical Summary

Problems solved by technology

One of the main defects of the traditional ABE scheme is that the encryption and decryption operations increase with the increase of the complexity of the access strategy, and the resulting calculation overhead is a fatal bottleneck for resource-constrained mobile devices (such as mobile phones)

[0003] In practical applications, users may need to use mobile devices to perform encryption and decryption work. The amount of calculation generated by the existing encryption and decryption process consumes too much energy, which is unbearable for mobile devices.

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