static void Main(string[] args)
{
var cipher = new VigenereCipher();
string language;
while (true)
{
Console.Write("Enter the required language (\"RU\" or \"EN\"): ");
var answer = Console.ReadLine();
if (answer == "RU")
{
language = "RU";
break;
}
else if (answer == "EN")
{
language = "EN";
break;
}
}
Console.Write("Enter text: ");
var message = Console.ReadLine().ToUpper();
Console.Write("Enter key: ");
var key = Console.ReadLine().ToUpper();
var encryptedText = cipher.Encrypt(language, message, key);
Console.WriteLine("Encrypted message: {0}", encryptedText);
Console.WriteLine("Decrypted message: {0}", cipher.Decrypt(language, encryptedText, key));
Console.ReadLine();
}
public static void ShowAnswers()
{
Console.WriteLine("Showing Vigenere decryption:");
var currentKey = FileHelper.GetKey("VigenereFirstTask.txt");
var currentMessage = FileHelper.GetMessage("VigenereFirstTask.txt");
Console.WriteLine($"Vigenere first decryption. Key = {currentKey}:");
foreach (var decryption in VigenereCipher.Decrypt(currentMessage, currentKey))
{
Console.Write(decryption);
}
currentMessage = FileHelper.GetMessage("VigenereSecondTask.txt");
Console.WriteLine($"{Environment.NewLine}Vigenere second decryption.");
foreach (var decryption in VigenereCipher.DecryptFromFrequencies(currentMessage, 7))
{
Console.WriteLine(decryption);
}
currentMessage = FileHelper.GetMessage("VigenereThirdTask.txt");
Console.WriteLine($"Vigenere third decryption.");
foreach (var decryption in VigenereCipher.DecryptFromFrequencies(currentMessage, 6))
{
Console.WriteLine(decryption);
}
currentKey = FileHelper.GetKey("VigenereFouthTask.txt");
currentMessage = FileHelper.GetMessage("VigenereFouthTask.txt");
Console.WriteLine($"Vigenere fourth decryption. Key = {currentKey}:");
foreach (var decryption in VigenereAutoKeyCipher.Decrypt(currentMessage, currentKey))
{
Console.WriteLine(decryption);
}
}
static void Main(string[] args)
{
string alphabet = "abcdefghijklmnopqrstuvwxyz";
VigenereCipher cipher = new VigenereCipher(alphabet);
string key = "battista";
string plainText = "this is a test message.";
string cipherText = cipher.Encrypt(plainText, key);
string decipheredText = cipher.Decrypt(cipherText, key);
Console.WriteLine($"Plaintext: {plainText}");
Console.WriteLine($"Key: {key}");
Console.WriteLine($"Lengthen Key: {cipher.LengthenKey(key, plainText)}");
Console.WriteLine($"Ciphertext: {cipherText}");
Console.WriteLine($"Deciphered: {decipheredText}");
}
//User gives message and key and the message will be decrypted
public static void Decrypt()
{
Console.WriteLine("Your Message: ");
string message = Console.ReadLine();
Console.WriteLine("Your Key: ");
string key = Console.ReadLine();
string decryption = VigenereCipher.Decrypt(message, key);
for (int i = 0; i <= 100; i++)
{
Console.Write($"\rDecrypting: {i}% ");
Thread.Sleep(25);
}
Thread.Sleep(1000);
Console.WriteLine("\rDecrypted message: " + decryption);
}