云端核心医学信息秘密动态分享方案

摘要

针对可视密码中的欺骗、不诚实等问题，以核心医学信息为载体，利用素数域上的椭圆曲线，研究并实现了一种适用于云端核心医学信息的秘密动态分享方案。通过选取合适的椭圆曲线参数值，对原始信息进行一次加密，在椭圆曲线加密体制下，对分享的子信息，使用私钥进行再次加密认证。通过加密、动态分享以及Lagrange插值多项式方案的融合，提高了现存方案的安全性、隐蔽性，达到了秘密信息分享的高效性、实用性。实验结果表明，本方案也具有较高的计算效率以及信息恢复效率。%In view of the problems of deception and dishonesty in visual cryptography ,the dynamic sha‐ring scheme of core medical information in the cloud is studied and realized in this paper by taking the core medical information as the carrier and using the elliptic curve of prime number field .By selecting the appro‐priate parameters of elliptic curve ,the original information is encrypted once ,and the shared sub informa‐tion is encrypted and identified again with the private key in the elliptic curve encryption system .Through encryption ,dynamic sharing and Lagrange interpolation polynomial scheme ,the security and concealment of the existing scheme is improved to achieve the high efficiency and practicality of the secret information sha‐ring .The experimental results show that this scheme is also efficient in computation and information re‐trieval .