Playfair Cipher 1.not even the large number of keys in a monoalphabetic cipher provides security 2.one approach to improving security was to encrypt multiple letters 3.the Playfair Cipher is an example 4.invented by Charles Wheatstone in 1854,but named after his friend Baron Playfair Playfair Key Matrix 1.a 5X5 matrix of letters based on a keyword 2.fill in letters of keyword (sans duplicates) 3.fill rest of matrix with other letters Encrypting and Decrypting -plaintext is encrypted two letters at a time 1. if a pair is a repeated letter, insert filler like X’ 2. if both letters fall in the same row, replace each with letter to right (wrapping back to start from end) 3. if both letters fall in the same column, replace each with the letter below it (again wrapping to top from bottom) 4. otherwise each letter is replaced by the letter in the same row and in the column of the other letter of the pair
資源簡介：Playfair Cipher 1.not even the large number of keys in a monoalphabetic cipher provides security 2.one approach to improving security was to encrypt multiple letters 3.the Playfair Cipher is an example 4.invented by Charles Wheatstone i...
上傳時間： 2017-05-25
上傳用戶：變形金剛
資源簡介：The main features of the considered identification problem are that there is no an a priori separation of the variables into inputs and outputs and the approximation criterion, called misfit, does not depend on the model representation. The...
上傳時間： 2016-09-20
上傳用戶：FreeSky
資源簡介：Number of Namespaces in the project: 1 Number of Classes in the project: 6 Number of C# function(s) in the project: 2 Number of C# subroutine(s) in the project: 15 Number of VB.NET function(s) in the project: 1 Number of VB.NET subro...
上傳時間： 2013-12-09
上傳用戶：許小華
資源簡介：Ordinal Representation for Biometric Patterns. Very helpful in Large number of object to be compared. its sort of ranking based comparison.not quantitative
上傳時間： 2014-05-29
上傳用戶：bibirnovis
資源簡介：RX Library contains a large number of components, objects and routines for Borland Delphi with full source code. This library is compatible with Borland Delphi 1, 2, 3, 4 and Borland C++ Builder 1 and 3.
上傳時間： 2013-12-30
上傳用戶：daguda
資源簡介：the souce code of thinking in java (1-10),if you want to learn java ,please read it and you will get more
上傳時間： 2013-11-28
上傳用戶：363186
資源簡介：The evergoing number of electrical & electronic products, as well as the widespread use of modern house appliances by every family
上傳時間： 2014-01-10
上傳用戶：清風冷雨
資源簡介：this is the paper of " detecting the number of signals in wireless ds-cdma networks"
上傳時間： 2017-03-12
上傳用戶：kytqcool
資源簡介：page containing schematics for a very large number of mobile phones
上傳時間： 2017-04-25
上傳用戶：上善若水
資源簡介：DEMO_COND demonstrates the role of the condition number of a matrix (with respect to inversion) in the role of linear system solving. Matthias Heinkenschloss Department of Computational and Applied Mathematics Rice U...
上傳時間： 2014-01-23
上傳用戶：lwwhust
資源簡介：jeecms內容管理源代碼It is the fastest in the renovating speed, and owns the most number of softwares, also the newest sharing, downloading and publishing center for free software editions.
上傳時間： 2017-06-26
上傳用戶：1427796291
資源簡介：CarSim is an application for the simulating the (simplified) movement of cars on a two-dimensional surface. Package ope.carsim contains classes that represent the problem domain: cars and locations. Package ope.carsim.gui contains a ...
上傳時間： 2013-12-22
上傳用戶：gaome
資源簡介：The model consists of two systems, a climate control system and an electrical system. This allows for examination of the loading effects of the climate control system on the car s electrical system.
上傳時間： 2015-12-24
上傳用戶：zhengzg
資源簡介：With this foundation, you explore a development model that addresses the complete range of issues in the design of embedded communications software, including real-time operating systems, hardware and software partitioning, layering, and pr...
上傳時間： 2016-01-16
上傳用戶：zyt
資源簡介：Software developers need to have a number of traits in order to practice their craft well. First, they must be good analytical thinkers and problem solvers. A developer’s primary role is to create software that solves business problems. ...
上傳時間： 2014-06-01
上傳用戶：671145514
資源簡介：Adaptive Filter. This script shows the BER performance of several types of equalizers in a static channel with a null in the passband. The script constructs and implements a linear equalizer object and a decision feedback equalizer (DFE) ob...
上傳時間： 2016-02-16
上傳用戶：yan2267246
資源簡介：Determination of number of clusters in K-Means Clustering and Application in color image segmenta
上傳時間： 2013-12-05
上傳用戶：zsjzc
資源簡介：The usage of devices in a communication network requires configuration of the device parameters and communication facilities. CANopen defines a standardised way to access these parameters
上傳時間： 2013-12-23
上傳用戶：wangzhen1990
資源簡介：this a user-mode application to detect device change on the system, i.e. plug-in a USB drive, iPod, USB wireless network card, etc.
上傳時間： 2014-01-05
上傳用戶：lmeeworm
資源簡介：In this program we calculate the sum of the incident and scattered fields in a 90 degree conducting wedge by using the analytic and Image theotem method
上傳時間： 2014-10-27
上傳用戶：lizhen9880
資源簡介：Solves the incompressible Navier-Stokes equations in a rectangular domain with prescribed velocities along the boundary. The standard setup solves a lid driven cavity problem.
上傳時間： 2013-11-25
上傳用戶：15736969615
資源簡介：目的： 1．通過波形產生的例子掌握D/A轉換的方法。 2．了解各種波形發生器的編程實現。 實驗的按鍵通過A口輸入，轉換結果由DAC1和DAC2引腳輸出。在實驗中，可以將兩個輸出接至示波器和揚聲器，通過示波器可以觀察波形輸出，另外可以聽到揚聲器持續間斷的聲...
上傳時間： 2013-12-22
上傳用戶：youke111
資源簡介：Input The first line of the input contains a single integer T (1 <= T <= 20), the number of test cases. Then T cases follow. The first line of each case contains N, and the second line contains N integers giving the time for each people to...
上傳時間： 2015-10-27
上傳用戶：plsee
資源簡介：The 87C576 includes two separate methods of programming theEPROM array, the traditional modified Quick-Pulse method, and anew On-Board Programming technique (OBP).Quick Pulse programming is a method using a number of devicepins in parallel ...
上傳時間： 2013-10-21
上傳用戶：xiaozhiqban
資源簡介：一個游戲 the hardware for the game includes a number of displays, each with a button and -- a light, that each represent a bin that can store marbles (beans). -- -- The display indicates the number of marbles in each bin at any given t...
上傳時間： 2015-06-10
上傳用戶：cc1015285075
資源簡介：This section contains a brief introduction to the C language. It is intended as a tutorial on the language, and aims at getting a reader new to C started as quickly as possible. It is certainly not intended as a substitute for any of the nu...
上傳時間： 2013-12-23
上傳用戶：liansi
資源簡介：Core JSP In recent years, a large amount of software development activity has migrated from the client to the server. The client-centric model, in which a client executes complex programs to visualize and manipulate data, is no longer co...
上傳時間： 2014-01-13
上傳用戶：duoshen1989
資源簡介：This book is distributed in the hope it will be useful, but without any warranty, without even the implied warranty of merchantability or fitness for a particular purpose.
上傳時間： 2015-10-04
上傳用戶：123456wh
資源簡介：If you learned the Queueing theorem, You certainly remember the basic model, M/M/1. This is the source code of it.
上傳時間： 2014-05-29
上傳用戶：希醬大魔王
資源簡介：The combinatorial core of the OVSF code assignment problem that arises in UMTS is to assign some nodes of a complete binary tree of height h (the code tree) to n simultaneous connections, such that no two assigned nodes (codes) are on th...
上傳時間： 2014-01-19
上傳用戶：BIBI
