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Introduction to Cryptography in plain simple english. The document talks about the early day cryptography and gives some simple examples to the readers.

古典密码算法中的单表代换密码算法、移位密码算法、Vigenere密码算法。算法比较简单，用命令的方式。可以随机生成明文和密钥。-Classical cryptographic algorithm in a single table substitution cipher, transposition cipher, Vigenere cipher. Algorithm is relatively simple, way to use the command. Can be randomly generated and the key explicitly.

aes加密算法。用delphi语言实现。位数为128。-Aes encryption algorithm. Delphi use language. Median 128.

openssl编程入门(含完整示例),是一本openssl安全编程的一本入门书，相当不错、！-openssl programming entry (including a complete sample), is a security program openssl an entry book, quite good!

GOSTDSA算法的Pascal实现和例子，包括签名和确认-GOSTDSA the algorithm Pascal realization and the example, including sign and confirmed

微狗(UMI/UMC/PMH/PMI)驱动安装程序是安装在 Windows 9X/ME/NT/2K/XP/WS2003/Vista /XP64/WS2003x64/Vista64环境下的驱动的程序。- 微狗(UMI/UMC/PMH/PMI)驱动安装程序是安装在 Windows 9X/ME/NT/2K/XP/WS2003/Vista /XP64/WS2003x64/Vista64环境下的驱动的程序。

对音频信号分帧加窗,对每帧进行三阶小波变换,取其逼近系数平均值(一般为零).在此嵌入二值图像 并有对潜入水印信号进行盲检,恢复其嵌入水印-Sub-frame of the audio signal increases the Hamming window for each frame impletment third-order wavelet transform, whichever is close to the average coefficient (usually zero). according to this embedding binary image and resume its embedded watermark from the watermark signal by the Blind detection

大数计算器，有加减乘乘方求余求逆 可用于密码学的课程设计。-Large Number Calculator, there are more than addition and subtraction by inverse involution for cryptography can be used for curriculum design.

MD5 加密算法 Delphi 源码。 编译为dll文件，方便其他语言的系统调用-MD5 encryption algorithm Delphi source. Dll file to compile and facilitate language system calls