2DES

加密解决算法，有兴趣的可以瞧瞧，不太清楚如何使用-encrpt

说明：  据加密在计算机安全中的应用。。。。凑字凑字凑字(The application of data encryption in computer security)

删除系统某存储区中的证书， 代码参考msdn-removal system of a storage area of the certificate, a code reference VARIANT

凯撒密码作为一种最为古老的对称加密体制，在古罗马的时候都已经很流行，他的基本思想是：通过把字母移动一定的位数来实现加密和解密。例如，如果密匙是把明文字母的位数向后移动三位，那么明文字母B就变成了密文的E，依次类推，X将变成A，Y变成B，Z变成C，由此可见，位数就是凯撒密码加密和解密的密钥。个人原创。(Caesar password as one of the most ancient symmetric encryption system in ancient Rome have been very popular, his basic idea is: by the letters move a certain number of bits to achieve encryption and decryption. For example, if the key is the number of bits of plaintext letters backward move three, the plaintext letter B into a ciphertext E, and so on, X will become Y-become a B,, and Z becomes C Thus, the median is the Caesar cipher encryption and decryption keys. Personal originality.)

SIMPLOGIN

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本实验为编程实现 UDP 协议下使用 RSA 算法对信息的加密解密，用于两端之间的通讯 功能，开发平台为 win8.1， 开发环境 Eclipse， 开发语言 Java。(This experiment under the UDP protocol for programming using the RSA algorithm for encryption and decryption of information, for communication between the two ends of Function development platform is win8.1, the Eclipse development environment, programming language Java.)

说明：  验证sm2工具，具有加密、解密、签名、验签等功能(Verification SM2 tool, with encryption, decryption, signature, signature verification and other functions)

密码学算法-小型证书机构CA系统的认证系统-cryptography algorithm-small agencies CA certificate of authentication system

一种通过判断网卡地址来控制软件使用期限的算法，简单有效。-Address of a card through the control software to determine the use of time algorithms, simple and effective.