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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
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xiaobofenjie
和自回归模型一起写的小波模型，里面用到了自回归，自回归模型已上传(Since the regression model and the wavelet model with writing, which used the autoregressive, autoregressive models have been uploaded)
- 2010-05-25 14:57:39下载
- 积分：1
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C-Kalman
卡拉曼滤波器的c语言实现！非常好！很可以初学者使用！(Karaman filter c language! Very good!)
- 2011-10-21 15:59:29下载
- 积分：1
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hanningwindow
该程序是加上汉宁窗，用来检测谐波次数比较近的谐波(hanning FFT)
- 2009-03-28 11:02:27下载
- 积分：1
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LPSolvetoolbox
工具箱 (整数线性规划工具箱)
Matlab中使用(Kit (Integer Linear Programming Kit) Matlab using)
- 2009-05-22 22:06:24下载
- 积分：1
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zuiyousuanfa-huibian
matlab最优算法程序汇编以及相关常用的程序代码(Matlab the optimal algorithm program compilation and related common code)
- 2013-03-14 21:50:38下载
- 积分：1
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ruilixindaoguji
matlab环境下对时变，多径信道进行估计，服从瑞利分布。。。(Prediction program of wireless channel in Matlab environment)
- 2015-03-27 11:29:26下载
- 积分：1
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spatiograms
matlab code for spatiograms of images
- 2010-12-30 01:47:35下载
- 积分：1
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MAT
MATLAB函数大全_A-Z，可以看看，很不错的(MATLAB function Daquan _AZ, very good)
- 2015-01-04 17:20:45下载
- 积分：1
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msf7
绘制模糊标记为7时的隶属函数图像的源程序(Draw for the 7:00 mark of the fuzzy membership function image of the source)
- 2010-08-09 15:02:24下载
- 积分：1
