Method of encryption

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Let us call a method of encryption valid if it is possible to recover the original
plaintext from the encrypted word.
For example let K = 1010 and consider the following two possible ways to
encrypt a plaintext of length 4.

  1. Bitwise XOR with K. Then the original plaintext can be recovered by
    doing another XOR with K.
  2. Bitwise OR with K. Then the original cannot be recovered1 in general.
    To demonstrate this consider the following two plaintexts 1000 and 0000.
    They will both be encrypted into 1010 hence there is no way to know the
    original plaintext from the word 1010.
    Let K = 1010101010. Please answer the following questions.
  3. 20 marks. Provide an algorithm for Feistel encryption of a plaintext of
    length 20 with the underlying encryption being bitwise OR with K.
  4. 20 marks. Is this encryption valid? Please give YES/NO answer only.
  5. 60 marks. Justify the answer you gave for the second question. In
    particular, if you answered YES then please provide a decryption algorithm
    and explain why this algorithm would always return the original plaintext.

Sample Solution

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When a book has been made into a movie, one should read the book before watching the movie.

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You have to argue that When a book has been made into a movie, one should read the book before watching the movie.

For this paper, we will do something a little different. You are going to write an argument in which you consider the arguments, as well as the counter-arguments. This type of argument still follows the spirit of the 5-paragraph essay given in the sample essay I have provided you, except that added paragraphs are needed to discuss the counter-arguments.

“What does it mean to be educated?”

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Schools (pp. 293-324) AND WRITE A BRIEF SUMMARY
2-COMPLETE ATTACHED STUDY GUIDE #4
3-COMPLETE ATTACHED QUIZ
4-Observe all three (3) virtual classrooms and write a paragraph on each reflection should focus on the analysis of a brief key quotation from the assigned readings from the current week, explaining its meaning, interpreting its significance, and connecting it to the course themes
https://youtu.be/dj9WerPMBRk
https://youtu.be/Sl72MXNBEZ4
https://youtu.be/zxzU2TmFLiw
“What does it mean to be educated?”

Sample Solution

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Entering Sales

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Part 1

As a sales manager at Lopes Athletics Productions, you are required to report your sales numbers weekly and share them with the vice president of sales. Create an Excel spreadsheet that provides the following information.

Total sales for each type of video.
Total sales of all videos.
Percentage of total sales for each type of video.
A bar chart that summarizes the sales data.
The data needed for the spreadsheet is as follows. In all, you will need to create at least four columns; Video Type, Unit Price, Total Sales (for each type of video), and Percentage of Total Sales (for each type of video.

Pilates sold 156 videos at $29.99 each.
Step sold 392 videos at $14.99 each.
Weight Training sold 147 videos at $54.99 each.
Kickboxing sold 282 videos at $29.99 each.
Yoga sold 165 videos at $34.99 each.
Add a second worksheet to your workbook.

Insert a chart in a bar format linked to data on your first worksheet.
This bar chart should reflect the total sales of each type of video.
Review the rubric to see how the spreadsheet will be assessed
Part 2

Create a PowerPoint presentation with a minimum of five slides based upon the Excel spreadsheet you created in Part 1 of this assignment.

Utilize the bar chart from the spreadsheet as a graphic element on at least one slide in the presentation. The presentation should summarize the following information for the vice president of sales:

Sample Solution

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