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Brilliant_brown [7]
2 years ago
10

Explain how any simple substitution cipher that involves a permutation of the alphabet can be thought of as a special case of th

is cipher.
Computers and Technology
1 answer:
Kaylis [27]2 years ago
6 0

A simple substitution cipher takes each vector (e_i) and assigns it to the vectors [e_{\pi (i)}] in a one-to-one function so as to make them equivalent.

<h3>What is the Hill cipher?</h3>

In 1929, the Hill cipher was invented by Lester S. Hill and it can be described as a poly-graphic substitution cipher that is typically based on linear algebra and it avails a cryptographer an ability to simultaneously operate on more than three (3) symbols.

In Cryptography, the simple substitution cipher is usually viewed as a function which takes each plaintext letter (alphabet) and assigns it to a ciphertext letter. Thus, it takes each vector (e_i) and assigns it to the vectors [e_{\pi (i)}] in a one-to-one function so as to make them equivalent.

Read more on Hill cipher here: brainly.com/question/13155546

#SPJ1

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You are to design class called Employee whose members are as given below:
frozen [14]

Answer:

//The Employee Class

public class Employee {

   char name;

   long  ID;

//The constructor  

public Employee(char name, long ID) {

       this.name = name;

       this.ID = ID;

   }

//Method Get Person

   public void getPerson (char newName, long newId){

       this.ID = newName;

       this.ID = newId;

   }

//Method Print

   public void print(){

       System.out.println("The class attributes are: EmpName "+name+" EmpId "+ID);

   }

}

The working of the class is shown below in another class EmployeeTest

Explanation:

public class EmployeeTest {

   public static void main(String[] args) {

       Employee employee1 = new Employee('a', 121);

       Employee employee2 = new Employee('b', 122);

       Employee employee3 = new Employee('c', 123);

       employee1.print();

       employee2.print();

       employee3.print();

   }

}

In the EmployeeTest class, Three objects of the Employee class are created.

The method print() is then called on each instance of the class.

6 0
3 years ago
Many Web browsers allow users to open anonymous windows. During a browsing session in an anonymous window, the browser does not
Nataly_w [17]

Answer:

This question was initially incomplete. Here is the full question:

Many Web browsers allow users to open anonymous windows. During a browsing session in an anonymous window, the browser does not record a browsing history or a list of downloaded files. When the anonymous window is exited, cookies created during the session are deleted. Which of the following statements about browsing sessions in an anonymous window is true?

a) The activities of a user browsing in an anonymous window will not be visible to people who monitor the user's network, such as the system administrator.

b) Items placed in a Web store's shopping cart for future purchase during the anonymous browsing session will not be saved on the user's computer.

c) A user will not be able to log in to e-mail or social media accounts during the anonymous browsing session.

d) A user browsing in an anonymous window will be protected from viruses launched from any Web sites visited or files downloaded.

The correct answer is b) Items placed in a Web store's shopping cart for future purchase during the anonymous browsing session will not be saved on the user's computer.

Explanation:

For e-commerce sites, shopping cart information are stored as cookies on the visitor's computer such that when the website visitor leaves the website and comes back a few days later, their shopping preferences are remembered.

If the website visitor uses an anonymous window, the cookies created during the browsing session will be deleted when the anonymous website is exited and so, items placed in the shopping cart for future purchase will not be saved.

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