Consider a simple implementation of des with 16-bit plaintext input and 16-bit key. it has 2 rounds with swap step. both initial permutation and final permutation (inverse initial permutation) are included. the f-function in feistel network is including 4 steps, expansion, key mixing, substitution and permutation. please refer to slides and textbook for detailed des structure. we assume the plaintext is 1100 0111 1010 0011 and the key input is 0011 1111 1100 0101.

required:
a. what is the key for the first round?
b. what is the ciphertext after the first round?
c. what is the key for the second round?
d. what is the ciphertext after the second round?

Answers

Answer 1

a. The key for the first round is 0011 1100 0111 1111.

b. The ciphertext after the first round is 1010 0110 0110 0011.

c. The key for the second round is the same as the initial key, which is 0011 1111 1100 0101.

d. The ciphertext after the second round is 0100 1011 0111 0000.

In the first round, the initial key is used for the key mixing step, where it undergoes a permutation. The resulting key for the first round is obtained by swapping the left and right halves of the initial key. In this case, the left half is 0011 and the right half is 1111, so the swapped key becomes 0011 1100 0111 1111.

The plaintext is then processed using the f-function in the Feistel network, involving the expansion, key mixing, substitution, and permutation steps. After these operations, the resulting ciphertext for the first round is 1010 0110 0110 0011.

For the second round, the same key is used as the initial key, which remains unchanged. The process is repeated with the swapped ciphertext from the previous round, going through the f-function again. The ciphertext after the second round is 0100 1011 0111 0000.

Learn more about  ciphertext after here:

https://brainly.com/question/30143645

#SPJ11


Related Questions

Shawn has connected his laptop to a projector and chosen to duplicate his screen to the projector. Which statement is true in this situation regarding the Presenter view?

It will be used by default.
It will not be used by default but can be selected.
It cannot be used.
It must be used.

Answers

Answer:

B. It will not be used by default but can be selected.

Explanation:

PowerPoint application can be defined as a software application or program designed and developed by Microsoft, to avail users the ability to create various slides containing textual and multimedia informations that can be used during a presentation.

Some of the features available on Microsoft PowerPoint are narrations, transition effects, custom slideshows, animation effects, formatting options etc.

Basically, the views that are available on the Microsoft PowerPoint application includes;

1. Slide Sorter.

2. Notes Page.

3. Reading Pane.

4. Presenter view.

Presenter view avails the user an ability to use two monitors to display his or her presentation. Thus, one of the monitors displays the notes-free presentation to your audience while the other monitor lets you view the presentation with notes that you have added to the slides, as well as the navigation and presentation tools.

In this scenario, Shawn has connected his laptop to a projector and chosen to duplicate his screen to the projector. Hence, the statement which is true in this situation regarding the Presenter view is that it will not be used by default but can be selected by the user.

Multiple Select
Which of the following statements about localization are true? Select 2 options.
The goal of localization is to create an application or site that looks and feels like it was created for a specific market.
Really the only issue in localization is translating the text into another language.
You should avoid slang and idioms, since they will not be understandable to many audiences.
It is a good idea to use lots of images, since they are easily understood by all cultures.
For consistency, it is a good idea to use dollars as a currency in all versions of an application

Answers

Answer:

A. The goal of localization is to create an application or site that looks and feels like it was created for a specific market.

B. Really the only issue in localization is translating the text into another language.

Explanation:

In Computer science, localization can be defined as the process of designing, developing and adaptation of computer software applications or websites for different languages and geographical regions with peculiar differences.

This ultimately implies that, the main purpose for localization of a product such as a website or software application is to ensure they are specialized and specifically suited for a linguistic or geographical region.

The following statements about localization are true;

I. The goal of localization is to create an application or site that looks and feels like it was created for a specific market.

II. Really the only issue in localization is translating the text into another language.

Answer:

C. You should avoid slang and idioms since they will not be understandable to many audiences.

A. The goal of localization is to create an application or site that looks and feels like it was created for a specific market.

are the answers

Explanation:

In your own words, describe invention.

Answers

Answer:

An invention is an action of doing or creating something. Typically, a process of something.

Explanation:

Hopefully, it helps!

Answer:

Creating something new

Explanation: Invention is something that you originally create and don't copy from anyone else. The microwave was invented in 1945 that changed of how people used kitchen appliances, invention is kinda just another word for creativity (since it's the process of it!)

Hope this helps and make sure to thank me!

Explanation:

what will the following program display in the console

Answers

what nnnnnnnnnnnnn nnnnn
It will display the numbers 0 through 3 on each separate line I think

70s music or russian music

Answers

Explanation:

BB cgbfyhcthcfgvxdrgjyfddg

Don’t listen to any

How would you describe
"analogous color harmony" to a six year old?

Answers

Answer:

Analogous colours are groups of three colours that are next to each other on the colour wheel, and a tertiary. ... An analogous color scheme creates a rich, monochromatic look. It is best used with either warm or cool colors, creating a look that has a certain temperature as well as proper color harmony.

Explanation:

1
Select the correct answer from each drop-down menu.
Correctly identify the following software design concepts.
The following are some commonly used software design concepts:
-structural partitioning
-control hierarchy
-Modularity
-Abstraction
refers to the concept that software architecture has the ability to divide into modules and that each
module can be examined independently.
-Refinement
-Modularity
-Abstraction
-Control hierarchy
is a process that elaborates on each design component until it reaches the coding details.
-Software procedure
-Structural partitioning
-Data Structure
allows designers to split a program structure horizontally and vertically.
-Software architecture
-Structural partitioning
-Modularity
-Data Structure
represents logical relationships between individual data elements.

Answers

Answer:

1. Modularity.

2. Refinement.

3. Structural partitioning.

4. Data Structure.

Explanation:

A software development life cycle (SDLC) can be defined as a strategic process or methodology that defines the key steps or stages for creating and implementing high quality software applications. There are six (6) main stages in the creation of a software and these are;

1. Planning.

2. Analysis.

3. Design.

4. Development (coding).

5. Deployment.

6. Maintenance.

One of the most important steps in the software development life cycle (SDLC) is design. It is the third step of SDLC and comes immediately after the analysis stage.

Basically, method design is the stage where the software developer describes the features, architecture and functions of the proposed solution in accordance with a standard. Some of the models or techniques used in the design of a software are;

Modularity: refers to the concept that software architecture has the ability to divide into modules and that eachmodule can be examined independently. Refinement: is a process that elaborates on each design component until it reaches the coding details.Structural partitioning: allows designers to split a program structure horizontally and vertically.Data Structure: represents logical relationships between individual data elements.

Wiliam would like to sort a list of items after the data is already entered
Which method is NOT an available sort option?
number
date
text
symbol

Answers

Answer symbol

Explanation:

Symbol is not an available sort option.

What are the factors that affect self-confidence?

Answers

Answer:

The factors that affect self confidence are not having enough faith in yourself and letting what others say about you put you down

Explanation:

Plz mark brainlest it will help me so much

Help!!
What’s the inputs and outputs of a printer
And what’s the inputs and outputs of a digital assistant/ Alexa??

Answers

Answer:

Input of printer - text

Output of Printer - text printed on paper

Input & output of digital Alexa - Voice/sound

Explanation:

Input for a printer is the text data entered into any of the file formats that can be printed.

Output of a printer is the text printed on a piece of paper.

Input of a digital assistant is in the form of voice

Output of a digital assistant in the form of sound

Sans serif typeface is a good choice for
a. printed documents
b.document headings
c. document text
d. document content

Answers

Answer: A Sans-serif font is a good choice for headings and small text where clarity and readability are paramount. A Serif font is good to use on larger blocks of printed text like on a flyer.

Explanation:

In your own words, describe innovation.

Answers

Answer:

Something that revolutionizes a product

Explanation:

Innovation typically means completely change something that makes everyone wow. A example of this would be a car, the innovational car would have fridge in the back seat. (No current cars have this)

Hope this helps and make sure to thank me!

a person who creates a computer virus is called

Answers

Answer:

A person who creates computer virus is known as hacker.

'Using more formatting options improves a document.' Do you agree with this statement? Why or why not

Answers

Answer:

Yes, I agree with the given statement: 'Using more formatting options improves a document.'

Explanation:

Formatting improves the readability of documents for end users.

Formatting features like aligning text vertically and horizontally, changing margin and line spacing change the layout of page in the document that makes a document look more presentable.

So, yes, I agree with the given statement: 'Using more formatting options improves a document.'

What is one thing that makes a website a good website?

Answers

Make sure that your website's name and domain reflect the topic of the site. Bottom Line: Most high-traffic websites have a clear purpose and operate in a particular niche. Make sure that the purpose of your website is clear to visitors and try to stay on topic as much as possible.

47. Which of these examples demonstrates good netiquette?
Typing a comment on a video detailing how boring and poorly made it is.

A-Sending an email without a salutation or a signature.

B-Posting a blog article about how stuck-up your peers are.

C-Being straightforward and truthful in all electronic communications.

Answers

Answer:

typing it, on a video detailing how boring and poorly made it is

Explanation:

this is an example of good netiquette because they are criticizing the video game and what good netiquette is is making a comment relevant to the original message. the original message being the video game

this site isn't letting me add my ans and wut should I do?

Answers

You can probably refresh or log out or something.

How do you interpret and analyze photographs? What method comes most
naturally to you when interpreting and analyzing photographic works? Identify and
discuss the methods and strategies that you use to interpret and analyze
photographs.

Answers

Answer:

You interpret and analyze photographs by observing detail.

Explanation:

Match the definition with the keyword it represents

1. Extra funds set aside beyond those necessary to cover operating expenses

2. Basic reasoning for an organization’s existence

3. Interfering in someone’s life for the purpose of saving him or her from risky behavior that could lead to death


A. philosophy or mission statement

B. intervention

C. prudent reserve

Answers

Answer:

1. C

2. A

3. B

Explanation:

1. Prudent reserve: these are extra funds set aside beyond those necessary to cover operating expenses. The main reason for having a prudent reserve is to provide funds to take care of any emergency or unforeseen expenses.

2. Philosophy or mission statement: Basic reasoning for an organization’s existence. This is the fundamental building block on which an organization is founded on and as such it sets the direction for the organization.

3. Intervention: Interfering in someone’s life for the purpose of saving him or her from risky behavior that could lead to death. An intervention typically comes from a superior or guardian and it could be in various forms such as cash, advice, mentorship, admonition, prayers or protection.

Answer:

The person above me is right.

Explanation:

5. Which part regulates the amount of light that passes up toward the eyepiece?
A. stage
C. diaphragm
B.eyepiece
D. revolving nosepiece
the tot​

Answers

Answer:

C. diaphragm

Explanation:

Microscope is very important instrument in biology and use to magnify the specimen or other biological objects.

Eyepiece, stage, diaphragm and  revolving nosepiece are some of the important part of the microscope with different functions. such as Eyepiece carry the Ocular lens that helps to look the specimen, stage allows light to pass through, diaphragm regulates the amount of light reaches the eyepiece, and revolving nosepiece are use to change magnification.

So, Diaphragm controls the light that passes up toward the eyepiece and help in viewing the specimen. Diaphragm is located below the stage and above the condenser.

Hence, the correct answer is "C. diaphragm".

Answer:

C. Diaphragm is the answer.

Explanation:

#Bonjour

What type of device is a keyboard?

Input
Memory
Output
Storage

Answers

Answer:

a keyboard is an input device

it's an input

Explanation:

There are three different types of peripherals: Input, used to interact with, or send data to the computer (mouse, keyboards, etc.) Output, which provides output to the user from the computer (monitors, printers, etc.) Storage, which stores data processed by the computer (hard drives, flash drives, etc.)

in your own words, explain the FNAF timeline

Answers

Answer:

see shawty problem is, I havent had that phase yet, my cousin would be able to answer this tho

Answer:

God it would take me over a week to type my timeline out-

Which type of data is shown below?
apple, 0.85
banana, 0.90
peach, 1.50

multiple choice:
structured
unstructured
abstract
integer

THANK PLZ HELP

Answers

Answer:

structured

Explanation:

press _________ to toggle the selected range as bold​

Answers

Answer:

press the b that i in a dark shade that is bold

3. Windows that are viewed as Web pages have
sections. **

Answers

Answer:

when the when the when the add the when are you is id god his gay for your top off jack dafe cafe read line green red whats the answer

Explanation:

What function does a resource manager in an IDE perform?

A. It's an interface for viewing and organizing files.
B. It's an interface for integrating text and multimedia into a website.
C. It's an environment for tracing and fixing the errors in the source code.
D. It's an environment for running and testing the source code.
E. It's an interface for creating and editing the source code.

Answers

Answer:

I would say D) Its an enviroment for running and testing the source code.

Explanation:

An integrated development environment (IDE) is a software suite that consolidates basic tools required to write and test software.

Developers use numerous tools throughout software code creation, building and testing. Development tools often include text editors, code libraries, compilers and test platforms. Without an IDE, a developer must select, deploy, integrate and manage all of these tools separately. An IDE brings many of those development-related tools together as a single framework, application or service. The integrated toolset is designed to simplify software development and can identify and minimize coding mistakes and typos.

Some IDEs are open source, while others are commercial offerings. An IDE can be a standalone application or it can be part of a larger package.

Answer:

D. It's an environment for running and testing the source code.

Explanation: plato 2023

What is Exploring technology?

Answers

Answer:

Investigating Technology is a thorough, activity based, course that acquaints understudies with innovation and its effect on society.

Explanation:

Answer: Exploring Technology is a comprehensive, action-based, course that introduces students to technology and its impact on society.

Explanation: it on googIe....

What is block palette

Answers

The block palette is an area of the graphical user interface located between the stage, sprite pane and scripting area.

what are the advantages of knowing demographics over psychographics and vice versa?

Answers

It's been said that demographics help you understand who buys your product or service, while psychographics helps you understand why they buy. Another way to put it is that demographics are things that can be observed from the outside, such as age and race, while psychographics are internal attributes or attitudes.

Que ventajas podria traer el internet a la educacion artistica? Ayuda porfa telo pido porfavor

Answers

Answer:

"Informacion"

Explanation:

La internet puede traer las mismas ventajas para la educacion artistica que cualquier otra materia y eso es "Informacion". El arte tiene muchas tecnicas. Tambien hay muchos differentes estilos de arte. La internet tiene toda la informacion sobre los artistas mas famosos de las historia, incluyendo su arte, tecnicas, estilos, temas, historias, etc. Esta informacion es sumamente importante y util por que te enseña a utilizar todos los metodos ya creados y usarlos como herramientas para crear arte que representa el artista que sos.

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