Abstract
With the widespread use of WeChat Mini Programs, their security has attracted more and more attention. The WeChat Mini Program can be accessed by scanning a WeChat Mini Program code. We should protect the code thus to protect the Mini Program. In this paper, based on studying the function in each pattern of WeChat Mini Program codes, a visual secret sharing (VSS) scheme for WeChat Mini Program codes (MPCVSS) with (n,n)(n≥4) threshold is proposed to control and identify the users of Mini Program. MPCVSS combines the error-correcting characteristic of WeChat Mini Program codes with the theory of VSS. A secret WeChat Mini Program code is shared into n shared codes slightly modified from n cover codes. Each shared code is a valid code that can be scanned and decoded correctly. The secret code can be recovered by XORing n shares. The recovered code can be decoded as the same secret Mini Program. Theoretical analysis and experiments show that the proposed VSS scheme is practical and feasible.
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