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@@ -0,0 +1,101 @@
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+#include <iostream>
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+#include <string>
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+#include <fstream>
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+#include <chrono> // fuer die Zeitmessung
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+#include <stdint.h>
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+
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+using namespace std;
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+
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+const char first_char = '!';
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+const char last_char = '~';
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+
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+char get_new_char(char prev_char) {
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+ if (prev_char == 0) {
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+ return first_char;
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+ } else if (prev_char < last_char) {
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+ return prev_char + 1;
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+ }
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+ return first_char;
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+}
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+
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+int bruteforce(string passwd) {
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+ char list[200] = {'!',0};
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+ uint64_t counter = 0;
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+ int pos = 0;
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+
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+ while (passwd.compare(list)) {
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+ if (list[pos] == last_char) {
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+ while (list[pos] == last_char) {
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+ list[pos] = get_new_char(list[pos]);
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+ pos += 1;
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+ list[pos] = get_new_char(list[pos]);
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+ }
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+ pos = 0;
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+ } else {
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+ list[pos] = get_new_char(list[pos]);
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+ }
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+ counter += 1;
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+ }
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+ cout << "Das Passwort lautet: " << list << endl;
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+ cout << "Es wurden " << counter << " Versuche benoetigt" << endl;
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+ return 1;
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+}
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+
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+// Funktion zum überprüfen des Passwortes mit dem Dictionary
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+int compare_passwd(string passwd, string dict_file) {
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+ // fstream zum Oeffnen der Datei
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+ fstream dict(dict_file, ios::in);
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+ // char zum einlesen einer Zeile max 200 Zeichen
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+ char list[200] = {0};
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+ // Statusvariable zum Erkennen, ob das Passwort gefunden wurde
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+ // Standard nein
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+ int a = 0;
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+ if(!dict.is_open()) {
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+ cout << "Dictionary konnte nicht geoeffnet werden!" << endl;
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+ return 0;
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+ }
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+// Schleife, um alle Passworter zu ueberpruefen, oder bei gefundenem Passwort abbrechen
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+ while (dict.getline(list, 200)) {
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+ // Passwort vergleichen
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+ if (passwd.compare(list) == 0) {
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+ a = 1;
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+ // Wenn das Passwort gefunden wurde muss nicht weiter ueberprueft werden
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+ dict.close();
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+ break;
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+ }
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+ }
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+ // Datei wieder schliessen
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+ dict.close();
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+ // Rueckgabe, ob das Kennwort gefunden (1) wurde oder nicht (0)
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+ return a;
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+}
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+
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+int main() {
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+
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+ string passwd;
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+ // Name der Datei
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+ string dict = "passdict.txt";
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+
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+ cout << " ***** Passwortueberpruefung ***** " << endl;
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+ cout << endl;
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+ cout << "Bitte ein Passwort eingeben, das ueberprueft werden soll." << endl;
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+ cout << "Passwort: ";
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+ cin >> passwd;
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+
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+ // Ueberpruefung, ob das Password bekannt ist.
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+// if (compare_passwd(passwd, dict)) {
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+// cout << "Passwort gefunden" << endl;
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+// } else {
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+ cout << "Passwort nicht gefunden" << endl;
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+ cout << "Beginne Bruteforce" << endl;
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+ auto start = chrono::high_resolution_clock::now();
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+ if (bruteforce(passwd)) {
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+ cout << "Passwort gefunden" << endl;
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+ }
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+ auto end = chrono::high_resolution_clock::now();
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+ chrono::duration<double, std::milli> duration = end - start;
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+ cout << "Das finden hat " << duration.count() << " Millisekunden gedauert." << endl;
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+// }
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+
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+ return 0;
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+}
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