-
poly
A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet.
The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.
- 2015-02-27 14:52:28下载
- 积分：1
-
CPPPPrimer
本书是久负盛名的C++经典教程引，其内容是C++大师Stanley B. Lippman丰富的实践经验和C++标准委员会原负责人Josée Lajoie对C++标准深入理解的完美结合，已经帮助全球无数程序员学会了C++。(Book is the most famous classic c++ tutorial, its content is c++ master Stanley b. Lippman wealth of practical experience and c++ standards committee of the original charge Josee Lajoie on c++ standard in-depth understanding of the perfect combination, has helped the world many programmers learned c++.)
- 2013-11-24 19:39:08下载
- 积分：1
-
code
Hough Transform for Iris
- 2014-01-01 08:53:07下载
- 积分：1
-
tiaozhibianma
研究无线通信中的调制编码的性能，分析编码调制在信道中的性能。(Study of wireless communication in the modulation coding performance, analyzing the performance of coded modulation in the channel.)
- 2009-11-15 11:31:52下载
- 积分：1
-
matlab
主要是些matlab的常用指令，对大家可能会有所帮助(Mainly those commonly used matlab instructions may help to everyone)
- 2010-05-09 14:47:15下载
- 积分：1
-
STBC22
STBC--Alamouti 2X2 matlab仿真(STBC Almouti with 2receivers and 2 transmitters, simulation using matlab)
- 2010-05-25 12:57:16下载
- 积分：1
-
MATLAB_curve_fitting
MATLAB CODING FOR CURVE FILTERING
- 2014-10-15 12:47:07下载
- 积分：1
-
RCB
说明： 对对角加载算法进行了分析,基于 RCB算法提出了一种可以抑制运动干扰的稳健波束形成器。可根据干扰位置的统计模型进行零陷扩宽,从而有效的抑制运动干扰。(An implementation algorithm of Robust Capon Beamforming is presented. This algorithm is advanced and widely used in the field of signal processing and communication.)
- 2020-09-09 10:38:03下载
- 积分：1
-
parzen
说明： Parzen窗估计法的C语言代码和Matlab应用的动态链接库。(Parzen window estimation method of C language code and Matlab applications, dynamic link library.)
- 2008-09-22 11:20:39下载
- 积分：1
-
corr
相关系数法计算两个向量的相关系数 MATLAB代码(Correlation coefficient method to calculate the correlation coefficient of two vectors MATLAB code)
- 2011-08-30 17:04:42下载
- 积分：1
