一个通过控制系统时间来达到限制软件使用期限的算法程序

加密算法 Test Driver for Crypto++, a C++ Class Library of Cryptographic Primitives: - To generate an RSA key cryptest g - To encrypt and decrypt a string using RSA cryptest r - To calculate MD5, SHS, and RIPEMD-160 message digests: cryptest m file - To encrypt and decrypt a string using DES-EDE in CBC mode: cryptest t - To encrypt or decrypt a file cryptest e|d input output - To share a file into shadows: cryptest s file (make sure file has no extension, if you re running this under DOS) - To reconstruct a file from shadows: cryptest j output file1 file2 [....] - To gzip a file: cryptest z input output - To gunzip a file: cryptest u input output - To run validation tests: cryptest v - To run benchmarks: cryptest b [time for each benchmark in seconds] -encryption algorithm Test Driver for Crypto. a Class C Library of spreadsheets Prim

可以绘制出常用的混沌图形，描述出混沌的发展趋势与概貌-Can be used to map out the chaotic graphics, described a chaotic development trends and profiles

个人编的rsa的源代码，算出public―private key；其中有Euclid，Extend Euclid的实现，以及Millar-Rabin test的实现，和加密/解密-Rsa personal series of source code, calculate the public-private key including Euclid, Extend Euclid realization, as well as the Millar-Rabin test realization, and the encryption/decryption

测试对字符串的MD4。运行环境：vs2008 （注意选择“多字符”编译）-Testing of the string MD4. Operating environment: vs2008 (attention to the selection " multi-character" compilation)

我写的利用IDEA算法的加密程序，并含文件切割和合并功能。-I write using IDEA algorithm encryption procedures, and documents containing cutting and consolidation functions.

Find the highest (maximum) and lowest (minimum) grades in an array of 25 integer grades. Print the array and print the highest and lowest grades, labeled appropriately.-Find the highest (maximum) and lowest (minimum) grades in an array of 25 integer grades. Print the array and print the highest and lowest grades, labeled appropriately.

采用高级加密标准aes算法针对流媒体加密程序-Using the Advanced Encryption Standard algorithm aes encryption for streaming media

线性移位寄存器是流密码的重要组成部分，该程序就是实现该方法。- The linearity shift register is the stream cipher important constituent, this procedure realizes this method.

用VC做的一个画直线和曲线的程序。-VC do a painting line and curve procedure.

My stuff is aimed at teaching, not efficiency. The others are probably much better implementations. The last one has both C++ and Java versions where my stuff is all C. So lots of choices!