a) Construct a Playfair key matrix with the keyword "secret" b) Use the matrix created in a) to encrypt the message "attackistonight"
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a) Construct a Playfair key matrix with the keyword "secret"
b) Use the matrix created in a) to encrypt the message "attackistonight"
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- What is the difference between clc and clear commands? B I A- CLC: Clear the contents of the command window without any effect on all variables in the working environment Clear: Clear all variables from the workspace D (丁欣朔) 11:44:57 Create a matrix 20 by 20. Fill it in the following way. Each matrix entry in the intersection of two middle rows and two middle columns should be assigned number 10, and all other matrix entries should be assigned number 5. A- BI A=10*ones(20,20) - 5*eye(20,20)-5fliplr(eye(20,20))Bullet-point the boots' functions.A certain computer password consists of 3 through 5 uppercase letters chosen from the 26 letters in the Roman alphabet, with repetitions allowed. a, How many different passwords can be formed? b) How many different passwords have no repeated letter? c) What is the value of p after exiting the nested loop? p:= 1 for i:= 1 to 3 for j := 1 to 3 p:= p · i ·j next j next i
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- Scenario: You have been tasked with building a URL file validator for a web crawler. A web crawler is an application that fetches a web page, extracts the URLs present in that page, and then recursively fetches new pages using the extracted URLs. The end goal of a web crawler is to collect text data, images, or other resources present in order to validate resource URLs or hyperlinks on a page. URL validators can be useful to validate if the extracted URL is a valid resource to fetch. In this scenario, you will build a URL validator that checks for supported protocols and file types.Please give me correct solution.SE case study homework (PLAGIARISM WILL BE DETECTED !!!) Please provide an upload link for the file This case study is about a simplified Payphone coin system.1. The minimum price of a communication is 10 ryals.2. After the introduction of the currency, the user has 2 minutes to dial his number (this time iscounted by a time counter).3. The line can be free or busy.4. The Payphone consumes money as soon as the called person picks up and at each time unitgenerated by the counter.5. You can add pieces of money at any time.6. At the time of the hang-up, the balance of the currency introduced (the rest of the money) isreturned. Required work:From this statement, you are asked to:1. Establish the use case diagram of this statement.2. Construct a sequence diagram that describes the nominal scenario of Payphoning use case inthis statement.
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