def splitAdd(user, password, name, value):
splits = getSplits(user, password)
k = int(splits[0])
n = (len(splits) - 1) / 2
assert int(n) == n
assert k <= n
splitter = ShamirSplit()
shares = splitter.share(value, k, n)
for s in range(n):
global host, port
host = splits[2 * s + 1]
port = splits[2 * s + 2]
print "Sending split", s, "to", host + ":" + port
add(user, password, 1, name,
concat([int2bin(s + 1), int2bin(shares[s])]))
def splitGet(user, password, name):
splits = getSplits(user, password)
k = int(splits[0])
n = (len(splits) - 1) / 2
assert int(n) == n
assert k <= n
keys = KeyDeriver(password)
shares = {}
# FIXME: obviously we should try all n until we get k splits
for s in range(k):
global host, port
host = splits[2 * s + 1]
port = splits[2 * s + 2]
print "Getting split", s, "from", host + ":" + port
records = baseGetList(user, password, 1, name)
record = records[-1]
share = unconcat(keys.decrypt(record['value']))
assert len(share) == 2
shares[bin2int(share[0])] = bin2int(share[1])
splitter = ShamirSplit()
secret = splitter.recover(shares)
print "value =", secret
