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umka21 [38]
3 years ago
9

How can you encrypt and decrypt a message in cryptography

Computers and Technology
1 answer:
ser-zykov [4K]3 years ago
5 0
There are two main types of encryption - <span>symmetric and asymmetric. 

Using symmetric encryption, you use a single secret key that is used to both encrypt and decrypt the data. This form of encryption has been used way before computers! Without this key it is very hard to decrypt a message. However, the issue with this is that if you want to send an encrypted message, you also have to send a key to them, and </span>if your somebody unintended intercepts the key, they can read the message.

What's the solution? Asymmetric cryptography or public key encryption. Asymmetric cryptography uses encryption that splits the key into two smaller keys. One of the keys is public and one is kept private. A good metaphor for understanding this is the public key is the lock, and the private key is the key. You can encrypt a message to send to somebody with their public key, locking it, which they can then decrypt, unlock, with their private key. And vice versa. So with this kind of encryption it's very difficult to decrypt a message for anybody but the owner as it's much harder to steal when it doesn't need to leave their computer, but easy to encrypt messages to send to them

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PSYCHO15rus [73]

If the internet document identifies the author, the textbook recommends that you type the author's name into the internet search box.

<h3>What is an internet document?</h3>

These are those documents that are gotten from the a search on the internet. To cite such items there are certain guidelines that are to be followed.

A simple search on a search engine would show you the most important details that this author possesses.

Read more on internet documents here:

brainly.com/question/14715750

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What should you do in order to have access to the header and footer tools? Open the View tab. Open the Page Setup dialog box. Op
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Answer:

Step 1  - Open the View tab.

Step 2 - Open the Page Setup dialog box

Step 3 - Open the header and footer tool.

Step 4 - Click OK.

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In order to access to the header and footer tools

Step 1  - Open the View tab.

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Write a program that checks whether a positive number given by an input from the user is greater than 5 and less than 20 with ja
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Answer:

Program written in Java is as follows

See comments for explanations

import java.util.Scanner;

public class CheckRange {

public static void main (String [] args)

{

// This line allows the program accept user input

Scanner input = new Scanner(System.in);

//This line declares variable for user input

int num;

//This line prompts user for input

System.out.print("Number: ");

//This line gets user input

num = input.nextInt();

/* The following if statement checks if the user input is greater than 5 and less than 20 */

if (num > 5 && num <= 20)

{

/* This line is executed if the above condition is true */

System.out.print(num+" is greater than 5 and less than 20");

}

else

{

/*If the condition is not true, this line is executed*/

System.out.print(num+" is not within specified range");

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// The if condition ends here

}

}

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3 years ago
What does DOS stand for?
anygoal [31]

Answer:

Disk Operating System

Explanation:

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