Secure Sharing Method of Big Data Based on ECC Encryption Algorithm and Casual Transmission

Due to the large amount of computation required for authentication and matching in the data sharing phase, there is a certain delay in the real-time performance of the corresponding efficiency. Therefore, this paper proposes the research on the security sharing method of big data based on ECC encryption algorithm and casual transmission. After encrypting the shared data by using the point operation and group algorithm in ECC pairing, a digital signature for the shared data is designed; OT (3-out-of-l OT) mechanism is introduced into the sharing protocol to realize the matching of wildcard patterns between two security parties. In the test results, the increase in attribute vector length did not have a significant impact on the computational cost of the data sharing stage. The specific computational cost remained stable within 2.0 * 103 byts, and the sharing time was within 35.0ms. Compared with the control group, it had a significant advantage.