A Method for Encrypted Storage and Retrieval of Time Field of Building Structure Test Data

Abstract

The invention discloses a method for encrypting storage and retrieval of time field of building structure test data. The method comprises an encryption process of collecting the real-time data and receiving and analyzing to obtain the collector number, sampling value, sampling unit and sampling time; converting the sampling time into Unix timestamp, and encrypting the Unix timestamp by AES and retrievable encryption, and encrypting the other data by AES respectively, and storing all the data in the relational database; a retrieval process of respectively converting the start and end times of the time retrieval conditions into Unix timestamps, retrievably encrypting the Unix timestamps, and taking the two encrypted results as the lower bound and the upper bound of the fields for retrieval;decrypting the data in the retrieval record by AES, and forming the original data together to complete the retrieval. The method of the invention integrates the ciphertext obtained by two encryption methods and is respectively used for time retrieval and time decryption of encrypted data, which can ensure the safety of time field and the retrievability of time field.

Description

technical field [0001] The invention relates to a method for encrypted retrieval of architectural data, in particular to a method for encrypted storage and retrieval of time fields of architectural structure test data. Background technique [0002] Building structure test is an important link in the process of building structure design, construction and research. Building structure test can detect whether the structure design is safe and reliable. The building structure test uses various collectors to collect field data, and the collected results are received and stored by the host computer provided by each manufacturer. With the rapid development of cloud computing, many users choose to store data in the cloud to reduce storage costs. Therefore, for some structural experiments with high data security requirements, it is necessary to encrypt the collected data and then store it in the cloud database. Since the traditional encryption method is not retrievable, that is, the c...

AI Technical Summary

Problems solved by technology

This type of encryption method needs to take into account both ciphertext retrievability and ciphertext recovery. At the same time, in order to ensure the security performance of encryption, it is usually necessary to design a complex encryption process.

For building structure tests, the local host needs to receive a large amount of data in real time and store them in real time after encryption. An overly complex encryption algorithm will bring great computing pressure to the local host.

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