def shamir_test(l, m, n):
s = Shamir('english')
seed = "Shamir's Secret Sharing Scheme!"[:l] # take first l characters
shares = s.split(seed, m, n)
print('original:', seed)
print('shares:')
for i in range(len(shares)):
print('%2d :' % (i + 1), shares[i])
shares = shares[:m] # take first m shares
cmb = s.combine(shares)
print ('combined:', cmb)
if seed == cmb:
print('TEST OK')
print()
else:
print('TEST FAILED !!!')
sys.exit(1)
def shamir_test(l, m, n):
s = Shamir('english')
seed = "Shamir's Secret Sharing Scheme!"[:l] # take first l characters
shares = s.split(seed, m, n)
print('original:', seed)
print('shares:')
for i in range(len(shares)):
print('%2d :' % (i + 1), shares[i])
shares = shares[:m] # take first m shares
cmb = s.combine(shares)
print('combined:', cmb)
if seed == cmb:
print('TEST OK')
print()
else:
print('TEST FAILED !!!')
sys.exit(1)
class KeySplitter:
def __init__(self, numshares, threshold):
self.splitter = Shamir(numshares, threshold)
self.numshares = numshares
self.threshold = threshold
def split(self, key):
xshares = [''] * self.numshares
yshares = [''] * self.numshares
for char in key:
xcords, ycords = self.splitter.split(ord(char))
for idx in range(self.numshares):
xshares[idx] += chr(xcords[idx])
yshares[idx] += chr(ycords[idx])
return zip(xshares, yshares)
def jsonify(self, shares, threshold, split):
data = {
'shares': shares,
'threshold': threshold,
'split': [base64.b64encode(split[0]),
base64.b64encode(split[1])]
}
return json.dumps(data)
l = [0 for i in range(0, word_count)]
l[0] = nb >> word_size * (word_count - 1)
for i in range(1, word_count):
l[i] = (nb - special_sum(l[0:i])) >> ((word_count - i - 1) * word_size)
return l
key = list(map(lambda x: wordlist.index(x), key))
nb = get_integer_from_key(key)
checksum = get_checksum(nb)
rec = (nb << 4) + checksum
print(to_list_of_ints(rec, 132, 11))
shares = Shamir.split(t, n, nb)
shares = [
to_list_of_ints((share[1]._value << 4) + get_checksum(share[1]._value),
132, 11) for share in shares
]
print([[wordlist[index_word] for index_word in share] for share in shares])
# reconstruction
print("reconstruction:")
rec = [(i + 1, get_integer_from_key(shares[i])) for i in range(0, len(shares))]
reconstructed = Shamir.combine(rec)._value
reconstructed_final_int = (reconstructed << 4) + get_checksum(reconstructed)
l = to_list_of_ints(reconstructed_final_int, 132, 11)
print([wordlist[l[i]] for i in range(0, len(l))])