Exemplo n.º 1
0
#  Copyright 2014 Chris Kuethe

import StringIO
from pysssslib import s4_encode, s4_decode

inputstr = StringIO.StringIO("secret12345")
num_shares = 5
num_needed = 3

exitcode = 0
# try this with 0 and 1 incorrect fragments...
for num_bad in range(2):
	shares = []
	for i in xrange(num_shares):
		shares.append(StringIO.StringIO())
	s4_encode(inputstr,shares,num_needed)

	# construct an incorrect fragment by reversing the first fragment
	if num_bad:
		wrong = shares[0].getvalue().encode('hex')
		wrong = wrong[::-1]
		wrong = wrong.decode('hex')
		shares.append(StringIO.StringIO())
		shares[-1].write(wrong)

	# test all-fragments (5), over-determined (4), sufficient (3), insufficient (2)
	while True:
		i = len(shares)
		if ((i - num_bad) < (num_needed - 1)):
			break
Exemplo n.º 2
0
#
# -*- coding: utf-8 -*-

from pysssslib import s4_encode, s4_decode

if __name__ == "__main__":
    import StringIO

    input = StringIO.StringIO("Too many secrets, Marty!")
    outputs = []
    n = 10
    k = 4
    for i in xrange(n):
        outputs.append(StringIO.StringIO())

    s4_encode(input, outputs, k)

    print "output shares %d-of-%d" % (k, n)
    for i in xrange(n):
        print str(i) + ": " + outputs[i].getvalue().encode("hex")
    print ""

    print "randomly selecting %d shares" % k
    import random

    inputs = []
    randIndex = random.sample(range(n), k)
    for i in randIndex:
        f = outputs[i]
        s = f.getvalue().encode("hex")
        print str(i) + ": " + s
Exemplo n.º 3
0
#  limitations under the License.
#
# -*- coding: utf-8 -*-

from pysssslib import s4_encode, s4_decode

if __name__ == "__main__":
  import StringIO
  input = StringIO.StringIO("Too many secrets, Marty!")
  outputs = []
  n = 10
  k = 4
  for i in xrange(n):
    outputs.append(StringIO.StringIO())

  s4_encode(input,outputs,k)

  print "output shares %d-of-%d" % (k, n)
  for i in xrange(n):
	  print str(i)+": "+outputs[i].getvalue().encode('hex')
  print ""

  print "randomly selecting %d shares" % k
  import random
  inputs = []
  randIndex = random.sample(range(n), k)
  for i in randIndex:
    f = outputs[i]
    s = f.getvalue().encode('hex')
    print str(i)+": "+s
    inputs.append(f)