private static void DecryptString()
{
Console.WriteLine("Enter your secret key's exponent: ");
var exp = new BigInt(Console.ReadLine());
Console.WriteLine("Enter your key's module: ");
var module = new BigInt(Console.ReadLine());
Console.WriteLine("Enter your encrypted data: ");
var encrypted = Console.ReadLine();
Console.WriteLine($"Your string is: \n{RSAEncrypter.DecryptString(exp, module, encrypted)}");
}
private static void DecryptFile(string path)
{
if (!File.Exists(path))
{
throw new FileNotFoundException("File does not exist.");
}
Console.WriteLine("Enter your key's exponent: ");
var exp = new BigInt(Console.ReadLine());
Console.WriteLine("Enter your key's module: ");
var module = new BigInt(Console.ReadLine());
Console.WriteLine($"Decrypted file saved by path: {RSAEncrypter.DecryptFile(path, exp, module)}");
}
private static void EncryptString()
{
Console.WriteLine("Enter first prime number: ");
var firstPrime = Console.ReadLine();
Console.WriteLine("Enter second prime number: ");
var secondPrime = Console.ReadLine();
Console.WriteLine("Enter your string to encrypt: ");
var(encryptedValue, publicKey, secretKey) =
RSAEncrypter.EncryptString(firstPrime, secondPrime, Console.ReadLine());
Console.WriteLine("Encrypted data:");
Console.WriteLine(encryptedValue);
Console.WriteLine($"Your secret key: (exponent: {secretKey.Exponent}; module: {secretKey.Module})");
Console.WriteLine($"Your public key: (exponent: {publicKey.Exponent}; module: {publicKey.Module})");
}
private static void EncryptFile(string path)
{
if (!File.Exists(path))
{
throw new FileNotFoundException("File does not exist.");
}
Console.WriteLine("Enter first prime number: ");
var firstPrime = Console.ReadLine();
Console.WriteLine("Enter second prime number: ");
var secondPrime = Console.ReadLine();
var(newPath, publicKey, secretKey) = RSAEncrypter.EncryptFile(path, firstPrime, secondPrime);
Console.WriteLine($"Encrypted file saved by path: {newPath}");
Console.WriteLine($"Your secret key: (exponent: {secretKey.Exponent}; module: {secretKey.Module})");
Console.WriteLine($"Your public key: (exponent: {publicKey.Exponent}; module: {publicKey.Module})");
}
