IBM的MARS加密算法实现，采用VC++语言开发，包含动态链接库，可直接使用。...

AES encoding/decoding

AES Crypto PIC Code Example

VHDL implementation of the twofish cipher for 128,192 and 256 bit keys. The implementation is in library-like form All needed components up to, including the round/key schedule circuits are implemented, giving the flexibility to be combined in different architectures (iterative, rolled out/pipelined etc). Manual in English is included with more details about how to use the components and/or how to optimize some of them. All testbenches are provided (tables, variable key/text, ECB/CBC monte carlo) for 128, 192 and 256 bit key sizes, along with their respective vector files.-VHDL implementation of the twofish cipher for 128,192 and 256 bit keys. The implementation is in library-like form All needed components up to, including the round/key schedule circuits are implemented, giving the flexibility to be combined in different architectures (iterative, rolled out/pipelined etc). Manual in English is included with more details about how to use the components and/or how to optimize some

此代码提供关键时间表中的数据加密标准 (DES)，这是生成子密钥的算法的实现的。 • 输入： （长度 （64 位） 的任何字符串。 • 输出： 16 子键产生的 DES （每个 48 位长度）。 如何使用它： 1.>> K = DES_KeyScheduling %会创建一个类 "DES_KeyScheduling" 的对象。 2.>> K.KEY_STRING = "密码" %设置的加密密钥值。 3.>> K.printPC2() %打印输出的置换选择 2 （PC-2） （也称为 x 16 48 及其子键） 无压痕。用来调用函数 1 "K.printPC2(1)" 要输出带缩进值。

鉴于单纯设置一个计数器易被查出，通过修改使其不起作用。我们设计的程序可以通过数据文件，软件执行前通过关键字找到计数基数，然后计算和判别，如果在合理范围，则设定新的关键字，将计数基数放在新关键字指定的位置，并执行子程序 则启动自毁程序。

ROSSLER方程的混沌时间序列相空间重构程序-Equation ROSSLER chaotic time series phase space reconstruction procedure

设f(x)=1+x+x2+x5+x27，试分别写出实现下列移位寄存器的程序： 以f(x)为联接多项式的DSR； 以f(x)为联接多项式的LFSR。 可供选择的联接多项式： f1(x)=1+x+x4+x6+x30； f2(x)=1+ x3+ x31； f3(x)=1+ x6+ x31； f4(x)=1+ x7+ x31； f5(x)=1+ x13+ x31； -Let f (x) = 1 x x2 x5 x27, respectively try to write the following Shift Register : f (x) connected to the DSR polynomial; f (x) for connectivity polynomial LFSR. Connection options polynomial : f (x) = 1 x x4 x6 x30; F2 (x) = 1 x3 x31; f3 (x) = 1 x6 x31; f4 (x) = 1 x11 x31; f5 (x) = 1 x13 x31;

playfair的源代码，很简洁，跟网上现存的版本有所差异，但是效果是很不错的。-playfair source code is very simple, with the existing version of the web is different, but the effect is very good.

Rjindeal加密算法-Rjindeal encryption algorithm

加密与解码――密码技术剖析与实战应用中的一个例子-encryption and decryption-- Password Technology Analysis and real application of an example