Brice Colombier / IP protection demonstrator

Commit abd1d15d38fa9fa6863635ba79112d98332d6a6c

Authored by Brice Colombier about 3 years ago

Exists in master

CASCADE almost working...

Showing 2 changed files with 3 additions and 6 deletions

CASCADE/cascade.py
app.py

...	...	@@ -21,8 +21,6 @@
21	21
22	22	powers = [2**i for i in range(12)] # Up to 512-bit responses
23	23	if (not len(reference_response) in powers):
24		- print reference_response
25		- print len(reference_response)
26	24	raise ValueError('Message length is not a power of two or is too large')
27	25
28	26	if not initial_block_size:
...	...	@@ -48,7 +46,6 @@
48	46	if block_size < len(reference_response)/2:
49	47	block_size *= 2
50	48	block_size_increased = True
51		- print "Pass :", passe, ", block size", block_size
52	49	reference_response_indexed = zip(indices, reference_response)
53	50	if passe > 0:
54	51	rd.shuffle(reference_response_indexed)
...	...	@@ -56,7 +53,6 @@
56	53
57	54	split.split(reference_response, block_size)
58	55	split.split(indices, block_size)
59		- print "Parity check"
60	56	parities = gpfi.get_parities_from_indices(indices, tclsh, board_manager)
61	57	blocks_to_correct = []
62	58	reference_response_to_correct = []
...	...	@@ -72,7 +68,6 @@
72	68	if passe > 0:
73	69	even_parity_blocks.append(indices[block_index])
74	70	if blocks_to_correct:
75		- print "Narrow down to single bit errors to correct "+str(len(blocks_to_correct))+" blocks"
76	71	while len(blocks_to_correct[0]) > 2:
77	72	reference_response_to_correct, blocks_to_correct = bi_par.binary_par(reference_response_to_correct, blocks_to_correct, tclsh, board_manager)
78	73	# Final BINARY execution where single PUF bits are queried from the board
79	74
...	...	@@ -87,11 +82,11 @@
87	82	reference_response = fl.flatten(reference_response)
88	83	if blocks_to_correct:
89	84	# Error correction step
	85	+ print indices_to_flip
90	86	fb.flip_bits(reference_response, indices_to_flip, indices)
91	87	indices_to_flip = []
92	88	blocks_to_correct = []
93	89	# if passe > 0:
94		- # print "Backtracking process"
95	90	# # Backtracking process
96	91	# while odd_parity_blocks:
97	92	# backtracked_pos = 0

...	...	@@ -310,12 +310,14 @@
310	310	def perform_reconciliation(self):
311	311	self.tcl_obj.eval(self.board_manager.reset_boards())
312	312	self.tcl_obj.eval(self.board_manager.generate_response())
	313	+ print response_converter_to_hex(self.server_reference_response)
313	314	self.server_reference_response = cascade(self.server_reference_response,
314	315	0.02,
315	316	int(self.reconciliation_parameter_number_of_passes_spinbox.get()),
316	317	self.tcl_obj,
317	318	self.board_manager,
318	319	int(self.reconciliation_parameter_initial_block_size_spinbox.get()))
	320	+ print response_converter_to_hex(self.server_reference_response)
319	321	print ("Reconciliation done")
320	322
321	323	def reset_board(self):