基于椭圆曲线离散对数问题的一次签名方案。出了一个基于椭圆曲线离散对数问题的可证安全性的一次签名方案，构造了一个椭圆曲线群上的单向 函数，给出了签名方案初始化的相关算法以及椭圆曲线群上的点加算法和倍点算法，设计了签名算法和验证算法，同时证明了签名方案的安全性．-Based on elliptic curve discrete logarithm problem in a signature scheme. Out of one based on elliptic curve discrete

经典的kasumi算法描述，关注移动安全人士需要-detailed kasumi specification. people instrested in mobile security need it.

通过算法,实现进程间有限资源的安全分配,避免死锁的产生,利用银行家的算法实现.-Algorithm to achieve security allocation of limited resources in the process, to avoid deadlock generation of bankers algorithm.

With the fast progression of data exchange in electronic way,information security is becoming more important in data storage and transmission. Because of widely using images in industrial process, it is important to protect the confidential image d