private static void MenueSignieren()
{
int a = 1;
while (a == 1)
{
int choice = InOut.ShowMenu("Keys erzeugen", "Signieren", "Verifizieren", "Zurück");
switch (choice)
{
case 1:
Console.WriteLine("Schlüsselpaar Sender (Alice):");
RSA.Keygen();
Console.WriteLine("Schlüsselpaar Empfänger (Bob):");
RSA.Keygen();
break;
case 2:
RSASignieren.Signieren();
break;
case 3:
RSASignieren.Verifizieren();
break;
case 4:
a = 0;
break;
default:
break;
}
}
}
private static void MenueSymmetrisch()
{
int a = 1;
while (a == 1)
{
int choice = InOut.ShowMenu("Verschlüsseln", "Entschlüsseln", "Brute Force", "Zurück");
switch (choice)
{
case 1:
Console.WriteLine("Zu verschlüsselnde Nachricht eingeben:");
string klartext = Console.ReadLine();
Console.WriteLine("Schlüssel zwischen 1 und 25 eingeben:");
int key = Convert.ToInt32(Console.ReadLine());
bool prüf = Caesar.KeyPrüfen(key);
if (prüf)
{
Caesar.Verschlüsseln(klartext, key);
}
else
{
throw new Exception("Schlüssellänge Falsch!");
}
break;
case 2:
Console.WriteLine("Verschlüsselten Text eigeben:");
string geheim = Console.ReadLine();
Console.WriteLine("Schlüssel zwischen 1 und 25 eingeben:");
int key2 = Convert.ToInt32(Console.ReadLine());
bool prüf2 = Caesar.KeyPrüfen(key2);
if (prüf2)
{
Caesar.Entschlüsseln(geheim, key2);
}
else
{
throw new Exception("Schlüssellänge Falsch!");
}
break;
case 3:
Console.WriteLine("Verschlüsselten Text für Brute Force eingeben:");
string brutef = Console.ReadLine();
Caesar.BruteForce(brutef);
break;
case 4:
a = 0;
break;
default:
throw new Exception("Auswahlfehler");
}
}
}
private static void MenueAsymmetrisch()
{
int a = 1;
while (a == 1)
{
int choice2 = InOut.ShowMenu("Schlüssel erzeugen", "Verschlüsseln", "Entschlüsseln", "Zurück");
switch (choice2)
{
case 1:
RSA.Keygen();
break;
case 2:
Console.Write("Klartext: ");
string m = Console.ReadLine();
Console.Write("Public Key eingeben: ");
string pbk = Console.ReadLine();
string[] keypaarpublic = pbk.Split(':');
string e = keypaarpublic[0];
string N = keypaarpublic[1];
RSA.Encrypt(m, e, N);
break;
case 3:
Console.Write("Geheimtext eingeben: ");
string secret = Console.ReadLine();
Console.Write("Private Key eingeben: ");
string pvk = Console.ReadLine();
string[] keypaarprivate = pvk.Split(':');
string d = keypaarprivate[0];
string N2 = keypaarprivate[1];;
RSA.Decrypt(secret, d, N2);
break;
case 4:
a = 0;
break;
default:
Console.WriteLine("Error!");
break;
}
}
}
static void Main(string[] args)
{
int a = 1;
while (a == 1)
{
try
{
int auswahl = InOut.ShowMenu("Symmetrisch Verschlüsseln", "Asymmetrisch Verschlüsseln", "Hash berechnen", "Signieren", "Beenden");
switch (auswahl)
{
case 1:
MenueSymmetrisch();
break;
case 2:
MenueAsymmetrisch();
break;
case 3:
MenueHash();
break;
case 4:
MenueSignieren();
break;
case 5:
a = 0;
break;
default:
break;
}
}
catch (Exception e)
{
Console.WriteLine("Fehler! " + e.Message);
}
}
}
private static void MenueHash()
{
int a = 1;
while (a == 1)
{
int choice = InOut.ShowMenu("Hash berechnen", "Zurück");
switch (choice)
{
case 1:
Console.WriteLine("Text eingeben:");
string plain = Console.ReadLine();
Console.WriteLine("+++++ HASH +++++\n" + Hash.StartHash(plain) + "\n+++++ HASH +++++\n");
break;
case 2:
a = 0;
break;
default:
break;
}
}
}