def get_traces(n_traces, n_samples, FHplaintext, FHciphertext, FHtraces, direction):
global verbose
print ("Starting capture... ")
for i in range(0, n_traces):
# start the scope
scope_run()
if(i==0): # wait five seconds the first time to prevent unusable measurements
time.sleep(5)
if(verbose):print ("Trace number: %8d/%d" %(i+1,n_traces))
# generate a new random data vector
data = [random.randint(0,255) for x in range(16)]
ciphertext_data = hl2bs(data)
# send data to the card to be decrypted
plaintext_data = sc_decrypt(data)
# get the power trace
scope_get_trace()
# save trace, plain-text and cipher-text into an hdf5 file
if(direction == 0):
hdf5_add_data(bs2hl(ciphertext_data), bs2hl(plaintext_data), i, FHplaintext, FHciphertext, FHtraces)
else:
hdf5_add_data(bs2hl(plaintext_data), bs2hl(ciphertext_data), i, FHplaintext, FHciphertext, FHtraces)
print ('Done!')
def writeStudentCourse(cardResquestSc,
cardResquestSam,
courseIndex,
currentAttendance,
addedValue=10):
serviceSc = cardResquestSc.waitforcard()
start = time.time()
serviceSc.connection.connect()
serviceSam = cardResquestSam.waitforcard()
serviceSam.connection.connect()
# MF Sam call
apdu = Card.SELECT + Card.MF_SC
data = __transmit(serviceSam, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# DF Sam call
apdu = Card.SELECT + Sam.DF_SAM
data = __transmit(serviceSam, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# EF Sam call
apdu = Card.SELECT + Sam.EF_SAM
data = __transmit(serviceSam, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GU Sc call
apdu = Sam.GU_SC
data = __transmit(serviceSc, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
# LK and WK call
apdu = Sam.LK_SAM + data.response + Sam.WK_SAM
data = __transmit(serviceSam, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
# MF sc call
apdu = Card.SELECT + Card.MF_SC
data = __transmit(serviceSc, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# DF sc call
apdu = Card.SELECT + Student.DF_SC
data = __transmit(serviceSc, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GC sc call
apdu = Card.GC_SC + Sam.WK_SAM
data = __transmit(serviceSc, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GR sc call
apdu = Card.GR_SC + [data.sw2]
data = __transmit(serviceSc, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GC sam call
apdu = Sam.GC_SAM + data.response
data = __transmit(serviceSam, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GR sam call
apdu = Sam.GR_SAM + [data.sw2]
data = __transmit(serviceSam, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
# MUA SC call
apdu = Sam.MUA + data.response
data = __transmit(serviceSc, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GR SC call
apdu = Card.GR_SC + [data.sw2]
data = __transmit(serviceSc, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
# MUA sam call
apdu = Sam.MUA + data.response
data = __transmit(serviceSam, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
# EF Sc call
apdu = Card.SELECT + Student.Course.EF_SC
data = __transmit(serviceSc, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# Write to card BEGIN HERE
# SAM encript
attendanceInHex = bs2hl(str(currentAttendance + addedValue))
attendanceInHex = [0x30] * (3 - len(
attendanceInHex)) + attendanceInHex # make sure 3 digit to write
apdu = Sam.ENCRIPT + Student.Course.LENGTH_WRITE + attendanceInHex ####### TO DO
data = __transmit(serviceSam, apdu, Card.OPEN_SUCCESS)
if (not data.isSuccess): return False # wrong card
# GR sam
lengthu = data.sw2
apdu = Sam.GR_SAM + [data.sw2]
data = __transmit(serviceSam, apdu, Card.READ_SUCCESS)
if (not data.isSuccess): return False # wrong card
apdu = Sam.WRITE2 + [0x00, courseIndex * 9 + 6] + [
lengthu + 1
] + Student.Course.LENGTH_WRITE + data.response
data = __transmit(serviceSc, apdu, Card.READ_SUCCESS)
end = time.time()
print 'writeStudentCourse:time,', (end - start)
serviceSc.connection.disconnect()
serviceSam.connection.disconnect()
return data.isSuccess
## Form the command to be sent to the card: DECRYPT_KEY = [0x88, 0x10, 0, 0, len(DATA)] + DATA + [0x10] GET_RESPONSE = [0x88, 0xc0, 0x00, 0x00, 0x10] ## First, we send the DECRYPT_KEY command. ## This triggers the decryption in the card. The blue ## light will flash, and the toggle output will show ## a spike. apdu = DECRYPT_KEY print 'sending ' + toHexString(apdu) response, sw1, sw2 = cardservice.connection.transmit( apdu ) print 'response: ', response, ' status words: ', "%x %x" % (sw1, sw2) ## There will be no response here, but the card answers with sw1=0x61, sw2=0x10, ## indicating that there are 16 (=0x10) bytes to read now. ## Now we fetch the decrypted chunk key using the GET_RESPONSE command: apdu = GET_RESPONSE print 'sending ' + toHexString(apdu) response, sw1, sw2 = cardservice.connection.transmit( apdu ) print 'response: ', response, ' status words: ', "%x %x" % (sw1, sw2) ## If we want to check if an assumed key is correct, we calculate the ## result for this assumed key and print it: ASSUMED_KEY = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] aes_device = Crypto.Cipher.AES.new( toASCIIString( ASSUMED_KEY ) , Crypto.Cipher.AES.MODE_ECB ) response = aes_device.decrypt( toASCIIString( DATA ) ) print 'assumed: ', bs2hl( response ) ## That's it.
