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Avalanche Effect | Hybrid Cryptography |
Bifid Cipher | Image Steganography |
Caesar Cipher | Knapsack Encryption Algorithm |
Classical Cryptography | Network Security Principles |
Difference between Cryptography and Cryptology | Difference between Steganography and Cryptography |
Quantum Cryptography | RSA Algorithm in Cryptography |
Differences- Classical and Quantum Cryptography | The CIA triad in Cryptography |
DNA Cryptography | Vernam Cipher |
Before we discuss our programming assignment help services, let us first understand the basics of 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.
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.
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.
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
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.
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:
Anonymous remailer | Encryption/decryption |
Authentication | Multivariate cryptography |
Cipher | Onion routing |
Ciphertext | Plaintext |
Code | Post-quantum cryptography |
Crypto systems | Pseudonymity |
Cryptographer | Quantum cryptography |
Cryptographic key | Secret sharing |
Digital currency | Steganography |
Digital signatures | Tabula recta |
Dining cryptographers problem | Visual cryptography |
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];
}
}