基于新的群签名的密封式电子拍卖方案

利用一个基于分层身份思想和双线性映射的群签名，提出了一个新的安全高效的密封式电子拍卖方案。该方案除满足投标者的匿名性、健壮性、中标者的不可抵赖性和公开可验证性等一般安全性要求外，还具有步骤简略、构造方便、通信量和计算量小等特点。同时该方案实现了简单的可撤销和一次注册、多次拍卖的特性。

Sealed-bid electronic auction scheme based on new group signature

With the help of a group signature based on Hierarchical Identity-Based Signature(HIBS)and bilinear map,a new secure and efficient sealed-bid electronic auction scheme was presented.The scheme not only fulfilled the common security requirements,such as the anonymity of bidders,robustness,non-repudiation of the winner and public verifiability,but also had some other characteristics:compendiary steps,convenient construction,low cost of communications and computation,etc.Meanwhile,the scheme realized simple re...