The traceability of data leakage remains a foundational challenge faced by big data. Traditional data tracing technology is mainly based on digital fingerprint to embed lengthy code into digital works such as video, while the structured data with limited embedding space has not been given adequate consideration. In this paper, we propose a chameleon short signature by improving Khalili's chameleon hash function and combining Boneh's signature algorithm to achieve a oneto-many signature with a shorter message length under the same security premise. Then, we construct a traitor tracing model based on the proposed signature and design a cascade chain to complete credible data sharing and undeniable leaker detection. Security and simulation analysis show that the traitor tracing model achieves trusted data sharing and efficient traitor tracing for structured data.

No abstract

No abstract

No abstract