X-Git-Url: http://git.rot13.org/?p=goodfet;a=blobdiff_plain;f=client%2FGoodFETGlitch.py;h=56f30754290675c0b5390b420235d451837a4e8f;hp=a02e1f36d2ee74a6328e6041b7404900489d9aa2;hb=a3dbd267c9f9a20853ccbf64011ce3e185182106;hpb=b90b77172a80809a4fb1fb32260241a9e1a75b61

diff --git a/client/GoodFETGlitch.py b/client/GoodFETGlitch.py
index a02e1f3..56f3075 100644
--- a/client/GoodFETGlitch.py
+++ b/client/GoodFETGlitch.py
@@ -38,7 +38,7 @@ title "Success", \
 class GoodFETGlitch(GoodFET):
     
     def __init__(self, *args, **kargs):
-        print "Initializing GoodFET Glitcher."
+        print "# Initializing GoodFET Glitcher."
         #Database connection w/ 30 second timeout.
         self.db=sqlite3.connect("glitch.db",30000);
         
@@ -60,10 +60,11 @@ class GoodFETGlitch(GoodFET):
     def glitchvoltages(self,time):
         """Returns list of voltages to train at."""
         c=self.db.cursor();
-        c.execute("""select
-                     (select min(vcc) from glitches where time=? and count=1),
-                     (select max(vcc) from glitches where time=? and count=0);""",
-                  [time, time]);
+        #c.execute("""select
+        #             (select min(vcc) from glitches where time=? and count=1),
+        #             (select max(vcc) from glitches where time=? and count=0);""",
+        #          [time, time]);
+        c.execute("select min,max from glitchrange where time=? and max-min>0;",[time]);
         rows=c.fetchall();
         for r in rows:
             min=r[0];
@@ -74,7 +75,45 @@ class GoodFETGlitch(GoodFET):
             return range(min,max,1);
         #If we get here, there are no points.  Return empty set.
         return [];
-    
+    def crunch(self):
+        """This builds tables for glitching voltage ranges from the training set."""
+        print "Precomputing glitching ranges.  This might take a long while.";
+        print "Times...";
+        sys.stdout.flush();
+        self.db.execute("drop table if exists glitchrange;");
+        self.db.execute("create table glitchrange(time integer primary key asc,max,min);");
+        self.db.commit();
+        print "Calculating ranges...";
+        sys.stdout.flush();
+        
+        maxes={};
+        mins={};
+        
+        c=self.db.cursor();
+        c.execute("select time,vcc,count from glitches;"); #Limit 10000 for testing.
+        progress=0;
+        for r in c:
+            progress=progress+1;
+            if progress % 1000000==0: print "%09i rows crunched." % progress;
+            t=r[0];
+            v=r[1];
+            count=r[2];
+            if count==0:
+                try: oldmax=maxes[t];
+                except: oldmax=-1;
+                if v>oldmax: maxes[t]=v;
+            elif count==1:
+                try: oldmin=mins[t];
+                except: oldmin=0x10000;
+                if v<oldmin: mins[t]=v;
+        print "List complete.  Inserting.";
+        for t in maxes:
+            max=maxes[t];
+            try: min=mins[t];
+            except: min=0;
+            self.db.execute("insert into glitchrange(time,max,min) values (?,?,?)",(t,max,min));
+        self.db.commit();
+        print "Done, database crunched.";
     def graphx11(self):
         try:
             import Gnuplot, Gnuplot.PlotItems, Gnuplot.funcutils
@@ -94,8 +133,6 @@ class GoodFETGlitch(GoodFET):
         print "^C to exit.";
         while 1==1:
             time.sleep(30);
-
-        
     def graph(self):
         import Gnuplot, Gnuplot.PlotItems, Gnuplot.funcutils
         g = Gnuplot.Gnuplot(debug=1);
@@ -109,7 +146,22 @@ class GoodFETGlitch(GoodFET):
         g('set term png');
         g('set output "timevcc.png"');
         g(script_timevcc);
-    def explore(self,tstart=0,tstop=-1, trials=5):
+    def points(self):
+        c=self.db.cursor();
+        c.execute("select time,vcc,gnd,glitchcount,count from glitches where lock=0 and count>0;");
+        print "time vcc gnd glitchcount count";
+        for r in c:
+            print "%i %i %i %i %i" % r;
+    def npoints(self):
+        c=self.db.cursor();
+        c.execute("select time,vcc,gnd,glitchcount,count from glitches where lock=0 and count=0;");
+        print "time vcc gnd glitchcount count";
+        for r in c:
+            print "%i %i %i %i %i" % r;
+    #GnuPlot sucks for large sets.  Switch to viewpoints soon.
+    # sqlite3 glitch.db "select time,vcc,count from glitches where count=0" | vp -l -d "|" -I
+    
+    def explore(self,tstart=0,tstop=-1, trials=1):
         """Exploration phase.  Uses thresholds to find exploitable points."""
         gnd=0;
         self.scansetup(1); #Lock the chip, place key in eeprom.
@@ -117,9 +169,22 @@ class GoodFETGlitch(GoodFET):
             tstop=self.client.glitchstarttime();
         times=range(tstart,tstop);
         random.shuffle(times);
-        for t in times:
-            voltages=self.glitchvoltages(t);
-            print "Exploring %04i points in t=%04i." % (len(voltages),t);
+        #self.crunch();
+        count=0.0;
+        total=1.0*len(times);
+        
+        c=self.db.cursor();
+        c.execute("select time,min,max from glitchrange where max-min>0;");
+        rows=c.fetchall();
+        c.close();
+        random.shuffle(rows);
+        for r in rows:
+            t=r[0];
+            min=r[1];
+            max=r[2];
+            voltages=range(min,max,1);
+            count=count+1.0;
+            print "%02.02f Exploring %04i points in t=%04i." % (count/total,len(voltages),t);
             sys.stdout.flush();
             for vcc in voltages:
                 self.scanat(1,trials,vcc,gnd,t);
@@ -186,10 +251,10 @@ class GoodFETGlitch(GoodFET):
         rows=c.fetchall();
         for a in rows:
             return True;
+        c.close();
         return False; 
     def scanat(self,lock,trials,vcc,gnd,time):
         client=self.client;
-        db=self.db;
         client.glitchRate(time);
         client.glitchVoltages(gnd, vcc);  #drop voltage target
         gcount=0;
@@ -214,11 +279,13 @@ class GoodFETGlitch(GoodFET):
                     scount+=1;
         #print "values (%i,%i,%i,%i,%i);" % (
         #    time,vcc,gnd,gcount,scount);
-        if(lock>0):
+        if(lock==0):
             self.db.execute("insert into glitches(time,vcc,gnd,trials,glitchcount,count,lock)"
                    "values (%i,%i,%i,%i,%i,%i,%i);" % (
                 time,vcc,gnd,trials,gcount,scount,lock));
-        else:
+        elif scount>0:
+            print "INSERTING AN EXPLOIT point, t=%i and vcc=%i" % (time,vcc);
             self.db.execute("insert into exploits(time,vcc,gnd,trials,count)"
                    "values (%i,%i,%i,%i,%i);" % (
                 time,vcc,gnd,trials,scount));
+            self.db.commit(); #Don't leave a lock open.