Cryptography Assignment Help | Homework Help

Do not have enough time to write the cryptography assignment? Then, seek the help of our cryptography assignment help experts. They are available round the clock to offer you the best support required to complete cryptography assignments, homework and projects.

Our programming assignment help team is well-acquainted with various concepts related to cryptography to ensure we deliver the solution as per your guidelines. If you are looking for affordable cryptography homework help then you have reached the correct place. We solve multiple cryptography coursework daily, and some of the popular topics on which we get assignments are listed below:

Before we discuss our programming assignment help services, let us first understand the basics of Cryptography.

What Is Cryptography?

Cryptography is the art to write code secretly. The basic fundamental behind cryptography is to exchange information between two parties so that it is not stolen by the other. Cryptography is critical in various applications, especially in the military. People would use this cryptography to send messages to the authorized recipient only without letting the hackers snoop on the information in between. The company information is also exchanged through cryptography.

Significance Of Cryptography

Cryptography is considered to be the most secure and safe way to transfer confidential information over the network. Today, cryptography allows businesses to do business without taking any tension and transferring confidential data with confidence.

• Authentication - Electronic falsification is a major crime that is experienced by many people in the country. Some people are using the false signature of the other person and cheat. Cryptography would help carry out all electronic transactions securely.
• Internet - There are millions of systems that are connected over the network. The information would pass from one system to another. This is how communication takes place globally. Cryptography will help people to secure their websites and transmissions. It is also giving rise to the growth of electronic commerce.
• Access control - Cryptography allows you to gain control over cable TV and satellite. It avoids hackers from hacking cable companies and getting free cable services.
   

There are many encryption and decryption algorithms that are involved in cryptography. Thus making it difficult for students to complete the assignment correctly and on time. We help students with their cryptography assignments, homework and projects so that they can focus on what is more important.

The coding structure in cryptography is highly challenging for first-year students to understand. It needs a lot of practice to get hold of the subject. If the student does not understand the subject and writes the assignment, it results in poor grades. If you do not want to put your valuable grades at stake, then you must hire us. We provide instant and affordable Cryptography Homework Help services.

Data Projection Techniques – Cryptography Assignment

Various techniques are used to protect the data using cryptography and most of the university cryptography assignments are based on this concept only. Here are a few uses for it

• Authentication - Authentication will let you identify the person who has created the data. The receiver would get a notification that the authorized sender sends the data that they are going to receive. There are two different types of authentication. These include – message authentication, and the other is entity authentication. It is never easy for a student to develop an algorithm that secures the data. The algorithms and various cryptography aspects would create a lot of confusion. Whenever you need help in writing a cryptography assignment, get in touch with us. There are symmetric and asymmetric algorithms that a student should know as the basics of encryption and decryption. When there is a single bug in the code, it takes a toll on the whole security algorithm.
• Data integrity - If any changes are made to the change, it is simple for the security service to detect and track those changes. The data integrity will ensure that the data that is created by the sender is the same as the one that is sent to the receiver. This ensures that there is no tampering happening. If any unauthorized person has tweaked the data, the security service will detect it immediately. However, it cannot stop the person from changing the data, but it can detect when someone tries to mess it up.
• Confidentiality - The confidentiality would let you encrypt the data with the help of different algorithms. This helps you to secure the data from unauthorized access by the person.
• Non-repudiation - This type of service in cryptography will ensure that the two parties involved in the data transmission cannot deny that they have committed to the information. The entity cannot deny sending the information to third parties. For instance, when a person has made a purchase, then he/she cannot deny that the order has not been made by them.

Assignments Based On Cryptography Techniques

The following are the three different cryptography techniques that a student must learn as part of the computer science course when they want to excel in cryptography concepts.

• Public key cryptography - It explains asymmetric encryption where there would be two key cryptosystems used to keep the connection secure between the sender and the receiver. If you are stuck in writing the assignment on this topic, you can seek our experts' help. We are available round the clock to offer you the required help.
• Secret key cryptography - This technique would make use of a single key. The sender will use this key while sending a message to the receiver, and the same key is shared with the recipient so that they can decode the message and read it. In this type of technique, there is only one key that is used for encryption and decryption. Many students get confused with this concept and look for help. Without taking stress on you, hire us. We have professionals who do extensive research in writing the assignment for you.
• Hash function - The integrity of the message is checked using the hash function to ensure that a hacker does not compromise the data. It makes use of a particular length that has value over a key.

Get The Best Cryptography Assignment Help Online

Our Programming Assignment Help experts provide affordable cryptography coursework help to global students. They ensure that students get excellent grades by adhering to the guidelines, delivering clean codes and providing well-commented solutions.

We have delivered assignment solutions on below cryptography concepts:

Example of A Simple Cryptography Code Written By Our Expert

Code for: Cryptography?Shift Cipher

Solution:
 

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        String str;
        int key;
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter string for encryption(Upper case): ");
        str = scanner.nextLine();
        str = str.toUpperCase();
        System.out.print("Enter key: ");
        key = scanner.nextInt();
        String encryptedString  = getEncryptedString(str, key);
        System.out.println("The user input a message "+str+", by encrypting with shift cipher, the corresponding Encrypted message is "+encryptedString);
        System.out.print("Enter string for decryption(Upper case): ");
        scanner.nextLine();
        str = scanner.nextLine();
        str = str.toUpperCase();
        System.out.print("Enter key: ");
        key = scanner.nextInt();
        String decryptedString = getDecryptedString(str, key);
        System.out.println("The encrypted message is "+str+", by decrypting with shift cipher, the corresponding Decrypted message is "+decryptedString);
    }

    // this function converts the string into encrypted string
    public static String getEncryptedString(String str, int key)
    {
        String newString = "";
        int x;
        for(int i =0;i         {
            if(Character.isLetter(str.charAt(i)))
            {
                x = getIndexOfChar(str.charAt(i)); // getting of character
                x = x + key;
                x = x%26;
                newString = newString + getChar(x); // encrypting the letter
            }
            else
            {
                newString = newString + str.charAt(i);
            }
            
        }
        return newString;
    }

    // this function decrypt the string 
    public static String getDecryptedString(String str, int key)
    {
        String newString = "";
        int x;
        for(int i =0;i         {
            if(Character.isLetter(str.charAt(i)))
            {
                x = getIndexOfChar(str.charAt(i)); // getting of character
                x = x - key;
                if(x < 0) // if x is less than 0
                {
                    x= x + 26;
                }
                x = x%26;
                newString = newString + getChar(x); // decrypting the letter
            }
            else
            {
                newString = newString + str.charAt(i);
            }
            
        }
        return newString;
    }

    // this function gets the index of array in character
    public static int getIndexOfChar(char c)  
    {
        char arr[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
        for(int i =0;i         {
            if(arr[i] == c)
            {
                return i;
            }
        }
        return 0;
    }

    // this function gets the char of array in character at a particular index
    public static char getChar(int index)
    {
        char arr[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
        return arr[index];
    }
}