def start(self):
""" Returns a Deferred that will fire with the verify cap (an instance of
uri.CHKFileVerifierURI)."""
self.log("%s starting" % (self, ))
#paddedsize = self._size + mathutil.pad_size(self._size, self.needed_shares)
assert self._codec
self._crypttext_hasher = hashutil.crypttext_hasher()
self._crypttext_hashes = []
self.segment_num = 0
self.block_hashes = [[] for x in range(self.num_shares)]
# block_hashes[i] is a list that will be accumulated and then send
# to landlord[i]. This list contains a hash of each segment_share
# that we sent to that landlord.
self.share_root_hashes = [None] * self.num_shares
self._times = {
"cumulative_encoding": 0.0,
"cumulative_sending": 0.0,
"hashes_and_close": 0.0,
"total_encode_and_push": 0.0,
}
self._start_total_timestamp = time.time()
d = fireEventually()
d.addCallback(lambda res: self.start_all_shareholders())
for i in range(self.num_segments - 1):
# note to self: this form doesn't work, because lambda only
# captures the slot, not the value
#d.addCallback(lambda res: self.do_segment(i))
# use this form instead:
d.addCallback(
lambda res, i=i: self._encode_segment(i, is_tail=False))
d.addCallback(self._send_segment, i)
d.addCallback(self._turn_barrier)
last_segnum = self.num_segments - 1
d.addCallback(
lambda res: self._encode_segment(last_segnum, is_tail=True))
d.addCallback(self._send_segment, last_segnum)
d.addCallback(self._turn_barrier)
d.addCallback(lambda res: self.finish_hashing())
d.addCallback(
lambda res: self.send_crypttext_hash_tree_to_all_shareholders())
d.addCallback(lambda res: self.send_all_block_hash_trees())
d.addCallback(lambda res: self.send_all_share_hash_trees())
d.addCallback(
lambda res: self.send_uri_extension_to_all_shareholders())
d.addCallback(lambda res: self.close_all_shareholders())
d.addCallbacks(self.done, self.err)
return d
def start(self):
""" Returns a Deferred that will fire with the verify cap (an instance of
uri.CHKFileVerifierURI)."""
self.log("%s starting" % (self,))
#paddedsize = self._size + mathutil.pad_size(self._size, self.needed_shares)
assert self._codec
self._crypttext_hasher = hashutil.crypttext_hasher()
self._crypttext_hashes = []
self.segment_num = 0
self.block_hashes = [[] for x in range(self.num_shares)]
# block_hashes[i] is a list that will be accumulated and then send
# to landlord[i]. This list contains a hash of each segment_share
# that we sent to that landlord.
self.share_root_hashes = [None] * self.num_shares
self._times = {
"cumulative_encoding": 0.0,
"cumulative_sending": 0.0,
"hashes_and_close": 0.0,
"total_encode_and_push": 0.0,
}
self._start_total_timestamp = time.time()
d = fireEventually()
d.addCallback(lambda res: self.start_all_shareholders())
for i in range(self.num_segments-1):
# note to self: this form doesn't work, because lambda only
# captures the slot, not the value
#d.addCallback(lambda res: self.do_segment(i))
# use this form instead:
d.addCallback(lambda res, i=i: self._encode_segment(i))
d.addCallback(self._send_segment, i)
d.addCallback(self._turn_barrier)
last_segnum = self.num_segments - 1
d.addCallback(lambda res: self._encode_tail_segment(last_segnum))
d.addCallback(self._send_segment, last_segnum)
d.addCallback(self._turn_barrier)
d.addCallback(lambda res: self.finish_hashing())
d.addCallback(lambda res:
self.send_crypttext_hash_tree_to_all_shareholders())
d.addCallback(lambda res: self.send_all_block_hash_trees())
d.addCallback(lambda res: self.send_all_share_hash_trees())
d.addCallback(lambda res: self.send_uri_extension_to_all_shareholders())
d.addCallback(lambda res: self.close_all_shareholders())
d.addCallbacks(self.done, self.err)
return d
def test_hashers(self):
h1 = hashutil.block_hash(b"foo")
h2 = hashutil.block_hasher()
h2.update(b"foo")
self.failUnlessEqual(h1, h2.digest())
self.assertIsInstance(h1, bytes)
h1 = hashutil.uri_extension_hash(b"foo")
h2 = hashutil.uri_extension_hasher()
h2.update(b"foo")
self.failUnlessEqual(h1, h2.digest())
self.assertIsInstance(h1, bytes)
h1 = hashutil.plaintext_hash(b"foo")
h2 = hashutil.plaintext_hasher()
h2.update(b"foo")
self.failUnlessEqual(h1, h2.digest())
self.assertIsInstance(h1, bytes)
h1 = hashutil.crypttext_hash(b"foo")
h2 = hashutil.crypttext_hasher()
h2.update(b"foo")
self.failUnlessEqual(h1, h2.digest())
self.assertIsInstance(h1, bytes)
h1 = hashutil.crypttext_segment_hash(b"foo")
h2 = hashutil.crypttext_segment_hasher()
h2.update(b"foo")
self.failUnlessEqual(h1, h2.digest())
self.assertIsInstance(h1, bytes)
h1 = hashutil.plaintext_segment_hash(b"foo")
h2 = hashutil.plaintext_segment_hasher()
h2.update(b"foo")
self.failUnlessEqual(h1, h2.digest())
self.assertIsInstance(h1, bytes)