Training

from chipwhisperer.common.api.CWCoreAPI import CWCoreAPI
from matplotlib.pylab import *
import numpy as np

cwapi = CWCoreAPI()
cwapi.openProject(r'/home/cwuser/chipwhisperer/projects/dpa_dem.cwp')

tm = cwapi.project().traceManager()
ntraces = tm.numTraces()
npoints = tm.numPoints()

#We will store 0-guess here
zeroguess = np.zeros((1,npoints))

#We will store 1-guess here
oneguess = np.zeros((1,npoints))

bytenum = 0
bit = 0
##BITWISE GUESS STARTS HERE

#Count 1 and 0 for averaging
numone = 0
numzero = 0

#Do each trace loop
for n in range(0, ntraces):
    trace = tm.getTrace(n)
    tin   = tm.getTextin(n)
        
    if tin[bytenum] & (1<<bit):
        oneguess += trace
        numone += 1
    else:
        zeroguess += trace
        numzero += 1            

oneguess = oneguess / float(numone)
zeroguess = zeroguess / float(numzero)

diff = (oneguess - zeroguess).T

plot(diff)
show()