具有前向安全特性的地理目标强盲签名方案

A Strong Blind Signature Scheme of Geographic Target with Forward-Secure Characteristic

面对地理空间数据安全性存在的隐患问题,常规空间数据加密方法已经难以确保有效的安全性。现提出同时具有前向安全特性和强盲性的数字签名方案,并对给定的地理目标进行加密,通过实验验证效果俱佳。本方案中,实现了用大数分解难问题和基于求解离散对数困难性问题的有机结合来保证方案的体制安全性和强盲性,同时用主密钥机制保证方案的前向安全特性,使得安全机制更加健壮,应用范围更广。

Facing the potential problems in the security of geospatial data, the conventional spatial data encryption method is hard to ensure effective security. The digital signature scheme with both the forward-secure characteristic and the strong blindness is proposed in this paper to encrypt the given geographical object. The experimental results show that the effect is excellent. In this scheme, the difficult problem of large number decomposition is linked organically with the problem of solving discrete logarithm, which can assure the system security and the strong blindness of the scheme. Meanwhile, the master key mechanism assures the forward-secure characteristic of the scheme,which makes the security mechanism more robust and has a wider range of application.