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string-data-encryption
Data Encryption by Matrix Multiplication
We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.
- 2012-06-24 02:58:53下载
- 积分:1
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EMD_with_notes
Hilbert-黄变换中的核心程序EMD[Rilling版],程序中附加了详细的中英文注释以及参考文献,可以让使用者对EMD的原理更加明确,并对HHT的理解和应用大有裨益。(EMD,originally programed by Rilling, is a core subroutine in the Hilbert-Huang Transform(HHT). This subroutine attaches a detailed notes and references both in English and Chinese. It will greatly benefits the users on the principle of EMD. Furthermore,it will help the users and schoolers much more during the application and research of HHT.)
- 2011-09-29 23:19:11下载
- 积分:1
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BPSK
滤波器高斯噪声信道模型和jake s信道模型下的加入卷积码的二进制相位调制(bpsk and convolution on the filtered gaussion noise channel model and jake s model)
- 2014-01-03 16:52:34下载
- 积分:1
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federal
说明: 联邦UKF的matlab资料,关于信息融合,希望大家借鉴。(Federal UKF the matlab data on information fusion, I hope you learn.)
- 2011-04-09 08:37:27下载
- 积分:1
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reliability
基于实时运行条件下的39节点电力系统的可靠性的编码(Based on the reliability of real-time encoding of the operating conditions of the 39-bus power system)
- 2016-08-06 13:09:28下载
- 积分:1
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lvbo
一个带通滤波器,模拟Gelileo卫星中频滤波,显示频谱。(A band-pass filter, an analog IF filter Gelileo satellite.)
- 2013-12-15 12:33:37下载
- 积分:1
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gray
fingerprint image processing such as sungularity and core point detection
- 2011-12-21 17:22:25下载
- 积分:1
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Kmean
K-means Fuzzy Clustering file
- 2009-10-15 16:03:17下载
- 积分:1
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MATLAB
完整版的频谱检测算法的MATLAB实现,有原理,有程序,有结果。(Full version of the spectrum to achieve detection algorithm of MATLAB, there are principles, procedures and results.)
- 2009-01-08 11:52:45下载
- 积分:1
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liziqun
说明: 粒子群程序,是一种有效的优化算法,用于控制(Particle swarm procedure is an effective optimization algorithm is used to control)
- 2008-10-03 16:41:42下载
- 积分:1