用来注册CSP的程序，包含向注册表中写入名称，支持算法类型，在CSP选择列表中列出等。。。配合cspsign可完成CSP的注册和生成sig文件的功能-CSP registration procedures used, including to write the name of the registry to support the algorithm type, choose the CSP list and so on. . . CSP with cspsign registration t

It is encryption and decryption utility hich Works according to the "key" you choose. Once you Encrypted the Message you can send it to your friends, classmates to which you can give the key. And on their side they can Decrypt the message by the key

ElGamal algorithm not only used for data encryption can be used for digital signatures, their safety depends on the calculation of a finite field discrete logarithm this problem. Key to the method. First of all, choose a prime number p, the two rando