class TC_():
N = _sage_const_251
NORM_BOUND = _sage_const_321
q = _sage_const_128
df = _sage_const_73
dg = _sage_const_71
t = _sage_const_2
n = _sage_const_5
T = 'transpose'
p = -_sage_const_1
H = None
t_new = None
members = []
#users_count = [range(1, n+1)]
active_users = {}
def __init__(self):
for i in range(self.n + _sage_const_1):
print(i)
self.add_member()
self.share_secret()
def get_free_id(self):
for i in range(_sage_const_1, self.n + _sage_const_1):
if i not in self.active_users.values():
return i
return -_sage_const_1
def add_member(self):
m = Member(self.N, self.q, self.df, self.dg, self.T)
m.eval_k(self.q)
self.members.append(m)
def get_new_member_params(self, username):
id = self.get_free_id()
if id == -_sage_const_1:
print('All clients already connected')
return pickle.dumps(['server full'])
f = self.members[id].f
h = self.members[id].h
fs = self.members[id].fs
h0 = self.members[_sage_const_0].h
shares = self.members[id].shares
self.active_users.update({username: id})
print(self.active_users)
return pickle.dumps([f, fs, h, shares, h0, self.N, self.q])
def delete_user(self, username):
del self.active_users[username]
def share_secret(self):
self.k = _sage_const_1024
self.shaTSS = Shamir(self.t, self.n)
self.p, alpha = self.shaTSS.GC(self.k)
self.T = self.members[_sage_const_0].T
print('T: %d' % self.T)
print('k ' + str(self.members[_sage_const_0].k))
shares = self.shaTSS.DS(self.p, alpha, self.members[_sage_const_0].k)
for i in range(_sage_const_1, self.n + _sage_const_1):
self.members[i].shares = shares[i - _sage_const_1]
print('secret generated')
def change_t(self, t_new):
if t_new > self.n or t_new <= self.t:
return b'invalid new t'
sigma_c = _sage_const_2**(-self.n)
appr = ((self.t + t_new)**(_sage_const_1 / _sage_const_2) *
_sage_const_2**((self.t + t_new) / _sage_const_2))
g_cvp = log(appr, _sage_const_2)
sigma_F = t_new / self.t / self.k * (
log(sigma_c**(-_sage_const_1 / t_new) * self.n * self.t,
_sage_const_2) + g_cvp + _sage_const_1)
alpha_noise = (_sage_const_1 - (_sage_const_1 + sigma_F) /
(t_new / self.t))
H = floor(self.p**alpha_noise / _sage_const_2)
for i in range(_sage_const_1, self.n + _sage_const_1):
alpha = self.members[i].shares[_sage_const_0]
sigma = self.members[i].shares[_sage_const_1]
self.members[i].shares[_sage_const_1] = self.shaTSS.SG(
[alpha, sigma], self.p, H)
#self.members[i].status = ['4', ]
self.t_new = t_new
self.H = H
print(t_new)
return b'ok'
def get_info_client(self):
print(self.active_users)
return pickle.dumps(
[self.t, self.n, ', '.join(self.active_users.keys())])
#return pickle.dumps([self.q, self.members[0].h, self.p, self.t, self.n, self.NN])
def get_info_dc(self):
#print ([self.t, self.n, self.q, self.N, self.p, self.members[0].h, self.H, self.t_new])
return pickle.dumps([
self.t, self.n, self.N, self.q, self.T, self.p,
self.members[_sage_const_0].h, self.H, self.t_new
])
def get_user_status(self, username):
id = self.active_users[username]
return self.members[id].status
def set_user_status(self, username, status):
id = self.active_users[username]
self.members[id].status = status
def get_user_shares(self, username):
id = self.active_users[username]
return self.members[id].shares
def gen_partial_sign(self, h, m, s, username):
id = self.active_users[username]
user = self.members[id]
x = Rx(normilize_coeffs(
-_sage_const_1 / self.q * m * user.fs))._polynomial % self.q
y = Rx(normilize_coeffs(
_sage_const_1 / self.q * m * user.f))._polynomial % self.q
si = (Rx(x * user.f)._polynomial % self.q +
Rx(y * user.fs)._polynomial % self.q) % self.q
m = Rx(si * (user.h - h))._polynomial % self.q
s = s + si
return user.h, m, s
def encode_msg(self, D, r):
return H(D + str(r), self.N, self.q)
class TC_():
NN = _sage_const_251
q = _sage_const_128
df = _sage_const_73
dg = _sage_const_71
t = _sage_const_2
n = _sage_const_5
T = 'transpose'
p = -_sage_const_1
H = None
t_new = None
members = []
#users_count = [range(1, n+1)]
active_users = {}
def __init__(self):
for i in range(self.n + _sage_const_1 ):
print (i)
self.add_member()
f_bin = ''.join(['0' * (self.NN - len(self.members[_sage_const_0 ].f.list()))] + [bin(abs(x))[_sage_const_2 :] for x in self.members[_sage_const_0 ].f.list()])
fs_bin = ''.join(['0' * (self.NN - len(self.members[_sage_const_0 ].fs.list()))] + [bin(abs(x))[_sage_const_2 :] for x in self.members[_sage_const_0 ].fs.list()])
self.share_secret()
def get_free_id(self):
for i in range(_sage_const_1 , self.n+_sage_const_1 ):
if i not in self.active_users.values():
return i
return -_sage_const_1
def add_member(self):
f,g,F,G = auxmath.gen_NTRU_fgFG(self.NN, self.q)
m = Member(f,g,F,G, self.NN)
m.calculate_params(self.NN, self.q, self.T)
m.eval_k()
self.members.append(m)
def get_new_member_params(self, username):
id = self.get_free_id()
if id == -_sage_const_1 :
print ('All clients already connected')
return pickle.dumps(['server full'])
f = self.members[id].f
h = self.members[id].h
fs = self.members[id].fs
h0 = self.members[_sage_const_0 ].h
shares = self.members[id].shares
self.active_users.update({username : id})
print (self.active_users)
return pickle.dumps([f, fs, h, shares, h0, self.NN, self.q])
def delete_user(self, username):
del self.active_users[username]
#for key, value in dict(self.active_users).items():
# if value == username:
# del self.active_users[key]
def share_secret(self):
self.k = _sage_const_2048
self.shaTSS = Shamir(self.t, self.n)
self.p, alpha = self.shaTSS.GC(self.k)
print ('k ' + str(self.members[_sage_const_0 ].k))
shares = self.shaTSS.DS(self.p, alpha, self.members[_sage_const_0 ].k)
for i in range(_sage_const_1 , self.n+_sage_const_1 ):
self.members[i].shares = shares[i-_sage_const_1 ]
self.members[i].alpha = shares[i-_sage_const_1 ][_sage_const_0 ]
print ('secret generated')
def change_t(self, t_new):
if t_new > self.n or t_new <= self.t:
return b'invalid new t'
sigma_c = _sage_const_2 **(-self.n)
appr = ((self.t+t_new)**(_sage_const_1 /_sage_const_2 )*_sage_const_2 **((self.t+t_new)/_sage_const_2 ))
g_cvp = log(appr, _sage_const_2 )
sigma_F = t_new/self.t/self.k*(log(sigma_c**(-_sage_const_1 /t_new)*self.n*self.t, _sage_const_2 ) + g_cvp + _sage_const_1 )
alpha_noise = (_sage_const_1 - (_sage_const_1 +sigma_F) / (t_new/self.t))
H = floor(self.p**alpha_noise / _sage_const_2 )
for i in range(_sage_const_1 , self.n+_sage_const_1 ):
alpha = self.members[i].shares[_sage_const_0 ]
sigma = self.members[i].shares[_sage_const_1 ]
self.members[i].shares[_sage_const_1 ] = self.shaTSS.SG([alpha, sigma], self.p, H)
#self.members[i].status = ['4', ]
self.t_new = t_new
self.H = H
print (t_new)
return b'ok'
def get_info(self):
print (self.active_users)
return pickle.dumps([self.t, self.n, self.q, self.p, self.members[_sage_const_0 ].h, ', '.join(self.active_users.keys())])
#return pickle.dumps([self.q, self.members[0].h, self.p, self.t, self.n, self.NN])
def get_info_dc(self):
print ([self.t, self.n, self.q, self.p, self.members[_sage_const_0 ].h, self.H, self.t_new])
return pickle.dumps([self.t, self.n, self.q, self.p, self.members[_sage_const_0 ].h, self.H, self.t_new])
def get_user_status(self, username):
id = self.active_users[username]
return self.members[id].status
def set_user_status(self, username, status):
id = self.active_users[username]
self.members[id].status = status
def get_user_shares(self, username):
id = self.active_users[username]
return self.members[id].shares
def gen_partial_sign(self, h0, m0, s0, username):
id = self.active_users[username]
user = self.members[id]
x = auxmath.normilize_coeffs(-(_sage_const_1 /self.q)*m0*user.fs)
y = auxmath.normilize_coeffs(-(_sage_const_1 /self.q)*m0*user.f)
s = x*user.f + y*user.fs
m = auxmath.normilize_coeffs2(s * (user.h - h0), self.q)
s = s + s0
h = user.h
return h, m, s