def lrs_sign(self, msg):
"""Sign for LRS."""
ltp_array = sendrecv(self.server_addr, [Constants.GET_LTP_ARRAY])
ltp_idx = ltp_array.index(self.pub_key)
# modify stp_array to prevent duplicate voting
ltp_array.append(msg_hash(msg, sha1))
return lrs.sign(msg, self.pri_key, ltp_idx, ltp_array)
def lrs_sign(self, msg):
"""Sign for LRS."""
generator = sendrecv(self.server_addr, [Constants.GET_GENERATOR])
stp_array = sendrecv(self.server_addr, [Constants.GET_STP_ARRAY])
stp = powm(generator, self.pri_key)
stp_idx = stp_array.index(stp)
# modify stp_array to prevent duplicate voting
stp_array.append(msg_hash(msg, sha1))
return lrs.sign(msg, self.pri_key, stp_idx, stp_array, g=generator)
# get the public keys for all ids in anon set
pubkeys = range(setsize)
for i in range(setsize):
key = getpub(anonset[i])
pubkeys[i] = key
print key
# get LRS signature
# add private key to list of pub keys
pos = random.StrongRandom().randint(0,len(pubkeys))
L = pubkeys[:pos]+[comppub]+pubkeys[pos:]
# message to sign
f = open('ogst.pdf','rb')
msg1 = f.read()
m = msg1
print verify(sign(m,L,comppriv,pos),m)
print
print z
"""
# get LRS signature
# add private key to list of pub keys
pos = random.StrongRandom().randint(0,len(pubkeys))
L = pubkeys[:pos]+[comppub]+pubkeys[pos:]
anonset = anonset[:pos]+[id]+anonset[pos:]
print anonset
"""
# message to sign
f = open(filename,'rb')
m = f.read()
# get the signature
s1 = sign(m,pubs,comppriv,z)
print verify(s1,m,pubs)
print
# save the signature to file
f = open('sigs/' + filename[7:] + '.sig','w')
# save the list of facebook ids, their corresponding public keys, and the signature
pickle.dump([ids,pubs,s1],f)