1 files changed, 36 insertions, 0 deletions

diff --git a/ws2015/eip/blaetter/10/2/PasswordCracker.java b/ws2015/eip/blaetter/10/2/PasswordCracker.java
new file mode 100644
index 0000000..0c7c094
--- /dev/null
+++ b/ws2015/eip/blaetter/10/2/PasswordCracker.java
@@ -0,0 +1,36 @@
+public class PasswordCracker {
+  
+    // dies ist der laut Angabe bekannte Hashwert des Passworts
+    public static final String HASH = "ef937752f7348a964445f60857009f881983a6af";
+    
+    public static void main(String[] args) {
+        int numProcs = Runtime.getRuntime().availableProcessors();
+        Thread[] workers = new Thread[numProcs];
+
+        Synchronizer sync = new Synchronizer(HASH);
+
+        for (int i = 0; i < numProcs; i++) {
+            workers[i] = new Thread(new PasswordCrackerThread(sync, rangeBound(numProcs, i), rangeBound(numProcs, i + 1) - 1));
+            workers[i].start();
+        }
+
+        synchronized (sync) {
+            while (! sync.hasSolution()) {
+                try {
+                    sync.wait();
+                } catch (InterruptedException e) {}
+            }
+        }
+
+        for (Thread w : workers)
+            w.interrupt();
+
+        System.out.println("Guessed this password: " + sync.getSolution());
+        System.exit(0);
+    }
+
+    public static long rangeBound(int n, int i) {
+        long upperBound = (long) 1e8;
+        return n == i ? upperBound + 1 : (upperBound / n) * i;
+    }
+}