static void CreateSign()
{
Console.WriteLine("Enter text:");
string input = Console.ReadLine();
byte[] hash = FNVHash.Calculate(input);
Console.WriteLine("Hash: {0}", string.Join(' ', hash));
RSA rsa = new RSA();
string sign = rsa.Encrypt(hash);
Console.WriteLine("Message: {0}", input);
Console.WriteLine("Sign: {0}", sign);
}
static void CheckSign()
{
Console.WriteLine();
Console.WriteLine("Check sign");
Console.WriteLine("Enter message:");
string message = Console.ReadLine();
Console.WriteLine("Enter sign:");
string sign = Console.ReadLine();
Console.WriteLine("Open key:");
Console.WriteLine("Enter e:");
int e = int.Parse(Console.ReadLine());
Console.WriteLine("Enter r:");
int r = int.Parse(Console.ReadLine());
string hash = string.Join(" ", FNVHash.Calculate(message));
Console.WriteLine("Hash: {0}", hash);
string[] signNums = sign.Split(' ');
int[] convertedSign = Array.ConvertAll(signNums, s => int.Parse(s));
RSA rsa = new RSA();
string decryptedHash = rsa.Decrypt(convertedSign, e, r);
Console.WriteLine("Decrypted hash: {0}", decryptedHash);
if (decryptedHash == hash)
{
Console.WriteLine("True");
}
else
{
Console.WriteLine("False");
}
}