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CreateRemoteThread · Jul 27, 2018 · f965ef8 · f965ef8
1 parent 4670662
commit f965ef8
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Showing 5 changed files with 15 additions and 7 deletions.
diff --git a/dpa.py b/dpa.py
@@ -7,8 +7,8 @@
 import matplotlib.pyplot as plt
 import binascii
 
-TRACE_OFFSET = 0
-TRACE_LENGTH = 2400
+TRACE_OFFSET = 800
+TRACE_LENGTH = 1200
 
 sbox = [99,124,119,123,242,107,111,197,48,1,103,43,254,215,171,118,202,130,201,125,250,89,71,240,173,212,162,175,156,164,114,192,183,253,147,38,54,63,247,204,52,165,229,241,113,216,49,21,4,199,35,195,24,150,5,154,7,18,128,226,235,39,178,117,9,131,44,26,27,110,90,160,82,59,214,179,41,227,47,132,83,209,0,237,32,252,177,91,106,203,190,57,74,76,88,207,208,239,170,251,67,77,51,133,69,249,2,127,80,60,159,168,81,163,64,143,146,157,56,245,188,182,218,33,16,255,243,210,205,12,19,236,95,151,68,23,196,167,126,61,100,93,25,115,96,129,79,220,34,42,144,136,70,238,184,20,222,94,11,219,224,50,58,10,73,6,36,92,194,211,172,98,145,149,228,121,231,200,55,109,141,213,78,169,108,86,244,234,101,122,174,8,186,120,37,46,28,166,180,198,232,221,116,31,75,189,139,138,112,62,181,102,72,3,246,14,97,53,87,185,134,193,29,158,225,248,152,17,105,217,142,148,155,30,135,233,206,85,40,223,140,161,137,13,191,230,66,104,65,153,45,15,176,84,187,22]
 
@@ -57,7 +57,7 @@ def deriveKey(data,plaintexts):
       diffProfile = zeros(TRACE_LENGTH)
       for TRACE_NUM in range(0,data[0,:].size):
         hypothesis = sbox[plaintexts[BYTE_POSN,TRACE_NUM] ^ KEY_GUESS]
-        if bin(hypothesis).count("1") > 4:
+        if hypothesis % 2 == 1:
           group1[:] += data[:,TRACE_NUM]
           numGroup1 += 1
         else:
@@ -79,9 +79,17 @@ def deriveKey(data,plaintexts):
   r = deriveKey(data,plaintexts)
   plt.title("AES Power Leakage v Hypothesis Overview")
   plt.ylabel("Mean Power Leakage")
-  plt.ylabel("Hypothesis")
+  plt.xlabel("Key Hypothesis")
   plt.show()
   out = ""
   for i in range(0,16):
     out += "%02x " % int(r[i])
   print "Done: %s" % out
+  out = ""
+  actualKey = [0x2b,0x7e,0x15,0x16,0x28,0xae,0xd2,0xa6,0xab,0xf7,0x15,0x88,0x09,0xcf,0x4f,0x3c]
+  out = ""
+  for i in range(0,16):
+    out += "%02x " % int(actualKey[i])
+  print "Done: %s" % out
+  out = ""
+
diff --git a/fun/atmega-differential.png b/fun/atmega-differential.png
diff --git a/fun/pic24f-freezer-resistoronly.png b/fun/pic24f-freezer-resistoronly.png
diff --git a/fun/pic24f-freezer.png b/fun/pic24f-freezer.png
diff --git a/grab3.py b/grab3.py
@@ -7,9 +7,9 @@
 import sys
 import serial
 
-SAMPLE_RATE = 20E6
-NUM_SAMPLES = 50000
-NUM_CAPTURES = 400
+SAMPLE_RATE = 40E6
+NUM_SAMPLES = 5000
+NUM_CAPTURES = 10000
 
 def encryptAndTrace(ps,in_string,fname):
   # print "ENCRYPT: %s" % in_string.rstrip()