def __init__(s, root=None):
s.k, s.o, s.b, s.root = ecc.ecdsa(), ecc.ecdsa(), BASE, root
s.k.generate()
s.p = s.k.compress(s.k.pt)
s.i = s.p[:8]
s.c = root.k.sign(s.i) if root else None
s.tp, s.tn, s.com, s.un = {}, [], {s.i: s}, {}
def transaction(e, d):
"""
"""
k = ecc.ecdsa()
src, dst, dat, lat, mnt, ref = e[:8], e[8:16], e[16:20], e[20:28], e[28:32], e[32:40]
msg, sig, now = e[:-96], e[-96:], ecc.datint()
if src not in d.keys() or dst not in d.keys() or src == dst: return b'Error database'
dls, dld = d[src][4:], d[dst][4:]
zx, zd = ecc.b2h(src), ecc.b2h(dst)
if zx not in d.keys(): return b'Error public key'
k.pt = k.uncompress(ecc.h2b(zx + d[zx]))
if not k.verify(sig, msg): return b'Error signature'
val, bals, bald = ecc.b2i(mnt), balance(src, d), balance(dst, d)
if val <= 0 or bals - val < -MAXBAL or bald + val > MAXBAL: return b'Error value'
os, od = ecc.b2i(d[src][:4]), ecc.b2i(d[dst][:4])
ns, nd = os + 1, od + 1
nhs = ecc.z10 if os == 0 else d[src + ecc.i2b(os, 4)][-10:]
nhd = ecc.z10 if od == 0 else d[dst + ecc.i2b(od, 4)][-10:]
lst_tot, lst_wlt = ecc.b2i(d[ecc.v1][:8]), ecc.b2i(d[ecc.v1][8:])
if ecc.b2i(dls) <= now or ecc.b2i(dld) <= now or ecc.b2i(dat) > now: return b'Error deadline'
if os > 0:
dx = src + ecc.i2b(os, 4)
if len(d[dx]) == NS: dx = d[dx][:12]
if ecc.b2i(d[dx][8:12]) >= ecc.b2i(dat): return b'Wait a minute !'
nws, nwd = ecc.s2b(bals - val, 4), ecc.s2b(bald + val, 4)
sm, dm = dst + ecc.i2b(nd, 4) + nws, src + dat + lat + mnt + ref + sig + nwd
# BEGIN WRITE SECTION
d[src] = ecc.i2b(ns, 4) + dls
d[src + ecc.i2b(ns, 4)] = sm + hashlib.sha1(src + sm + nhs).digest()[:10]
d[dst] = ecc.i2b(nd, 4) + dld
d[dst + ecc.i2b(nd, 4)] = dm + hashlib.sha1(dst + dm + nhd).digest()[:10]
d[ecc.v1] = ecc.i2b(lst_tot + 1, 8) + ecc.i2b(lst_wlt + val, 8)
# END WRITE SECTION
return b'TRANSACTION from ' + zx + b' to ' + zd
def object(db, ip):
""
k, t = ecc.ecdsa(), socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
print ('Intelligent Object (socket open)')
with dbm.open(db, 'c') as d:
if len(d.keys()) == 0:
k.generate()
sk, pk = ecc.i2b(k.privkey, 48), k.compress(k.pt)
d[b'KEYS'] = pk + sk
t.bind((ip, PORT2))
while True:
(data, addr) = t.recvfrom(1024)
with open('server_pk') as f: pk = f.read()
k.pt = k.uncompress(ecc.z85decode(pk.encode('UTF-8')))
if len(data)>130:
sig, msg = ecc.z85decode(data[:120]), data[120:]
if k.verify(sig, msg):
cod = random.randrange(10000)
t.sendto(b'start counting (code:%04d)' % cod, addr)
dat = time.time()
else:
t.sendto(b'error on signature', addr)
elif len(data) == 4:
with dbm.open(db, 'c') as d:
print (' %d secondes' % int(time.time()-dat))
pk, sk = d[b'KEYS'][:48], d[b'KEYS'][48:]
k.pt, k.privkey = k.uncompress(pk), ecc.b2i(sk)
msg = b'invoice for %d secondes' % int(time.time()-dat)
cmd = ecc.z85encode(k.sign(msg)) + msg
t.sendto(cmd, addr)
else:
t.sendto(b'error', addr)
def server(db, ip):
"""
"""
k = ecc.ecdsa()
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind((ip, PORT1))
print ('IO-server on %s' % ip)
with dbm.open(db, 'c') as d:
if len(d.keys()) == 0:
k.generate()
sk, pk = ecc.i2b(k.privkey, 48), k.compress(k.pt)
d[b'SERVER'] = pk + sk
d[ecc.v1] = ecc.z8 + ecc.z8
with open('server_pk', 'w') as f: f.write(ecc.z85encode(pk).decode('UTF-8'))
print ('Server Public ID: ' + server_id(d).decode('UTF-8'))
if ecc.v1 in d.keys():
print ('Wealth: %d [%d operations]' % (ecc.b2i(d[ecc.v1][8:]),ecc.b2i(d[ecc.v1][:8]) ))
while True:
(data, addr), o = s.recvfrom(1024), b''
with dbm.open(db, 'c') as d:
if len(data) == 1:
if data == b'v': o = b'Error %02X' % verif(d)
elif data == b'l': o = list_humans(d)
elif data == b's': o = server_id(d)
elif len(data) == 8: o = proof (data, d)
elif len(data) == 16: o = history (data, d)
elif len(data) == 93: o = candidate (data, d)
elif len(data) == 136: o = transaction(data, d)
elif len(data) == 142: o = certificate(data, d)
elif len(data) >= 144 and len(data) <= 256: o = invoice(data, d)
else: o = b'command not found!'
s.sendto(o, addr)
def __init__(self, name, age=18):
" Name is not required for the real app "
self.name, self.age, self.hist, self.bal, self.eco = name, age, [], 0, 0
self.root = PREFIX + secrets.token_bytes(12) + b'\0' * 3
self.ids, self.cts, self.risk, self.note, self.refe = [], {}, 0, {}, {}
self.coef, self.k = (14, 1, 60, 1.2, 100), ecc.ecdsa()
self.k.generate()
self.pk = self.k.compress(self.k.pt)
def readsync(s):
with dbm.open(s.n) as b:
g0, g1, k = ecc.z2, ecc.i2b(1, 2), ecc.ecdsa()
msg = b[g0] + ecc.z4
if g1 in b: msg += b[g1] + b[b'_'+g1]
k.privkey = s.getsk()
sgn = k.sign(msg)
return msg + sgn
def manage_post(s, d):
k = ecc.ecdsa()
s.response('application/octet-stream')
if len(d) != RLEN: return False
if s.nod.me not in s.nod.tid: return False
if not s.nod.check(s.nod.tid[s.nod.me], ecc.b2i(d[10:13])): return False
k.pt = k.uncompress(s.nod.tid[s.nod.me] + s.nod.tpk[s.nod.tid[s.nod.me]])
if not k.verify(d[16:], d[:16]): return False
return s.nod.manage(d)
def sync(s, m):
with dbm.open(s.n, 'c') as b:
g0, g1, k = ecc.z2, ecc.i2b(1, 2), ecc.ecdsa()
k.pt = k.uncompress(s.tid['PUB'] + s.tpk[s.tid['PUB']])
if k.verify(m[-96:], m[:-96]):
if ecc.b2i(b[g0]) < ecc.b2i(m[:6]): b[g0] = m[:6]
if len(m) == 116 and g1 in b:
if ecc.b2i(b[g1]) < ecc.b2i(m[10:16]): b[g1] = m[10:16]
if ecc.b2i(b[b'_'+g1]) < ecc.b2i(m[16:]): b[b'_'+g1] = m[16:20]
def genkey(mel, unik, d):
if len(d.keys()) > 0 and unik:
print ('key already defined')
return b''
k = ecc.ecdsa()
k.generate()
sk, pk = ecc.i2b(k.privkey, 48), k.compress(k.pt)
d[pk[:8]] = pk[8:] + sk
return pk + b'%45s' % mel
def proof(x, d):
""
if b'SERVER' in d.keys():
k = ecc.ecdsa()
pk, sk = d[b'SERVER'][:48], d[b'SERVER'][48:]
k.pt, k.privkey = k.uncompress(pk), ecc.b2i(sk)
dat = ecc.datdecode(ecc.datencode()).encode('UTF-8')
msg = b'%s %d %s' % (ecc.b2h(x), balance(x, d), dat)
return ecc.z85encode(k.sign(msg)) + msg if not verif(d) else b'error'
return b''
def gene(bmy, dst, pld, d):
""
if bmy in d.keys():
k = ecc.ecdsa()
pk, sk = bmy + d[bmy][:40], d[bmy][40:]
k.pt, k.privkey = k.uncompress(pk), ecc.b2i(sk)
msg = pk[:8] + dst + ecc.datencode() + ecc.z8 + pld + ecc.z8
return msg + k.sign(msg)
else:
print ('you do not own that key')
return b''
def reset(s):
with dbm.open(s.n, 'c') as b:
for x in b.keys(): del b[x]
k = ecc.ecdsa()
k.generate()
s.pk = k.compress(k.pt) # My Public key
b[b'&'] = ecc.i2b(k.privkey, 48) # My Private key
#if s.n == 'PUB':
b[ecc.z2], b[b'_'+ecc.z2] = ecc.z6, ecc.z4
b[s.pk[:5]] = ecc.z6
# Types
b[ecc.i2b(0)] = ecc.i2b(15, 3) # Type0=G0:15%
b[ecc.i2b(1)] = ecc.i2b(13, 3) + ecc.i2b(0x100+80, 3) # Type1=G0:13%G1:80%
def commit(s, r):
t, k = socket.socket(socket.AF_INET, socket.SOCK_DGRAM), ecc.ecdsa()
isn, val, rcp = (r.v.group(1) != 'PUB'), int(r.v.group(2)), r.v.group(3).upper()
assert s.check(s.tid[s.n], val)
assert rcp in s.tid and s.n != rcp and s.n != 'PUB'
assert s.bal(s.tid['PUB']) == 0 and s.time(s.tid['PUB']) == 0
msg = s.tid[s.n] + s.tid[rcp] + ecc.i2b(val, 3) + ecc.z1 + s.pos(s.tid[s.n] + s.tid[rcp])
k.privkey = s.getsk()
sgn = k.sign(msg)
s.add(msg + sgn) # add src
if rcp in s.tbl:
if isn: t.sendto(msg + sgn, (HOST, s.tbl[rcp]))
t.sendto(msg + sgn, (HOST, s.tbl['PUB']))
s.sync(t.recvfrom(1024)[0])
else:
print ('iphone') # iphone case
t.sendto(msg + sgn, (HOST, s.tbl['PUB']))
def manage(s, m, a=None):
t, k = socket.socket(socket.AF_INET, socket.SOCK_DGRAM), ecc.ecdsa()
k.pt, dst = k.uncompress(m[:5] + s.tpk[m[:5]]), s.rvs[m[5:10]]
if s.n != 'PUB' and m[5:10] != s.tid[s.n] : return False
if not k.verify(m[MLEN:RLEN], m[:MLEN]) : return False
if len(m) > RLEN: s.sync(m[RLEN:])
if s.pos(m[:10]) == m[14:16]:
if s.n == 'PUB' and not s.check(m[:5], ecc.b2i(m[10:13])): return False
s.add(m) # add dst or PUB
if s.n == 'PUB' and a:
t.sendto(s.readsync(), a)
if dst in s.tbl:
t.sendto(m + s.readsync(), (HOST, s.tbl[dst]))
else:
print ('record for iphone')
s.pending(m[:RLEN])
print (s.bals())
return True
else:
return ecc.b2i(s.pos(m[:10])) == ecc.b2i(m[14:16]) + 1
def certificate(e, d):
"""
A(green) if first
B->A if A(green)B(red) then B(orange)
A->B if A(green)B(orange) then B(green)
"""
k = ecc.ecdsa()
src, dst, dat, lat, pld, ref = e[:8], e[8:16], e[16:20], e[20:28], e[28:38], e[38:46]
msg, sig, now = e[:-96], e[-96:], ecc.datint()
if ecc.b2i(dat) > now: return b'future date'
if src not in d.keys() or dst not in d.keys() or src == dst: return b'Error database'
zx = ecc.b2h(src)
if zx not in d.keys(): return b'Error public key'
k.pt = k.uncompress(ecc.h2b(zx + d[zx]))
if not k.verify(sig, msg): return b'Error signature'
green, orang, red = ecc.add1year(ecc.datencode()), ecc.datencode(), ecc.z4
os, od = ecc.b2i(d[src][:4]), ecc.b2i(d[dst][:4])
ns, nd = os + 1, od + 1
nhs = ecc.z10 if os == 0 else d[src + ecc.i2b(os, 4)][-10:]
if os > 0:
dx = src + ecc.i2b(os, 4)
if len(d[dx]) == NS: dx = d[dx][:12]
if ecc.b2i(d[dx][8:12]) >= ecc.b2i(dat): return b'Wait a minute !'
nws = ecc.s2b(balance(src, d), 4)
sm = dst + dat + lat + pld + ref + sig + nws
# START WRITING
if ecc.b2i(d[dst][4:]) > ecc.datint() and d[src][4:] == red:
d[src] = ecc.i2b(ns, 4) + orang
d[src + ecc.i2b(ns, 4)] = sm + hashlib.sha1(src + sm + nhs).digest()[:10]
d[ecc.v1] = ecc.i2b(ecc.b2i(d[ecc.v1][:8]) + 1, 8) + d[ecc.v1][8:]
return b'REQUEST by ' + zx
if ecc.b2i(d[src][4:]) > ecc.datint() and d[dst][4:] != red:
d[dst] = d[dst][:4] + green
d[src] = ecc.i2b(ns, 4) + d[src][4:]
d[src + ecc.i2b(ns, 4)] = sm + hashlib.sha1(src + sm + nhs).digest()[:10]
d[ecc.v1] = ecc.i2b(ecc.b2i(d[ecc.v1][:8]) + 1, 8) + d[ecc.v1][8:16]
return b'CERTIFICATION by ' + zx
# STOP WRITING
else: return b'Error request'
def test(self, u):
for x in u:
x.pretest(self)
self.tax, k, tab = sum([ecc.b2i(x[-1:]) // 5
for x in self.hse[0]]), ecc.ecdsa(), {}
for x in u:
x.test(self)
assert operator.eq(self.hse[0].keys(),
self.hse[1].keys()) # VERIF 1: no leaks
assert sum([x.bal
for x in u]) + self.tax == 0 # VERIF 2: sum balances null
for x in self.hse[0]:
for z in [y for y in self.pks if y[:8] == self.hse[0][x][0]]:
k.pt = k.uncompress(z)
assert k.verify(self.hse[0][x][1],
x) # VERIF 3: Transaction signature ok
for x in self.hse[0]:
y, pr = self.hse[0][x][0], ecc.b2i(x[-1:])
tab[y] = tab[y] + pr if y in tab else pr
for z in [x for x in self.hse[1] if self.hse[1][x] in tab]:
tab[self.hse[1][z]] -= ecc.b2i(z[-1:])
for t in tab:
assert tab[t] < MAXDEBT # VERIF 4: all debt under limit
def verif(d):
"""
check certification !
"""
print ('run check!')
k = ecc.ecdsa()
if len(d.keys()) > 0 and ecc.v1 not in d: return 0x01 # head does not exists
wc, wr, tc, tr, al = 0, 0, 0, 0, 0
lo = []
for i in [x for x in d.keys() if len(x) == 16]:
x = ecc.h2b(i)
if ecc.b2i(d[x][4:]) > ecc.datint(): lo.append(x)
#print (lo)
#find the root
for x in d.keys():
# Length
lk, lv = len(x), len(d[x])
if lk == 1: wr, tr = ecc.b2i(d[x][8:16]), ecc.b2i(d[x][:8])
if lk == 1 and lv != 16: return 0x02 # bad length head
if lk == 5 and lv != 96: return 0x03 # bad length server id
if lk == 8 and lv != 8: return 0x04 # bad length id head
if lk == 12 and lv not in (NS, ND, NC): return 0x05 # bad length operation
if lk == 16 and lv != 80: return 0x06 # bad length pub key
# Public keys
if lk == 12:
if ecc.b2h(x[:8]) not in d: return 0x07 # src id unknown
if ecc.b2h(d[x][:8]) not in d: return 0x08 # dst id unknown
if lk == 8:
# Money supply
al += balance(x, d)
# Dates
dat = ecc.z8
for i in range(ecc.b2i(d[x][:4])):
dx = x + ecc.i2b(i+1, 4)
if len(d[dx]) in (ND, NC):
if d[dx][8:12] <= dat: return 0x09 # bad date increase
dat = d[dx][8:12]
if len(d[dx]) == ND:
if dat > d[x][4:]: return 0x0A # invalid date/dead line
# Signatures
for i in range(ecc.b2i(d[x][:4])):
dx = x + ecc.i2b(i+1, 4)
if len(d[dx]) == NC: src, dst = x, d[dx][:8]
if len(d[dx]) == ND: src, dst = d[dx][:8], dx[:8]
if len(d[dx]) in (NC, ND):
zx = ecc.b2h(src)
if zx not in d.keys(): return 0x0B # Error public key
msg, sig = src + dst + d[dx][8:-110], d[dx][-110:-14]
k = ecc.ecdsa()
k.pt = k.uncompress(ecc.h2b(zx + d[zx]))
if not k.verify(sig, msg): return 0x0C # bad signature
# Hash
h = ecc.z10
for i in range(ecc.b2i(d[x][:4])):
dx = x + ecc.i2b(i+1, 4)
h = hashlib.sha1(x + d[dx][:-10] + h).digest()[:10]
if h != d[dx][-10:]: return 0x0D # bad hash
# Wealth
for i in range(ecc.b2i(d[x][:4])):
dx = x + ecc.i2b(i+1, 4)
if len(d[dx]) == ND: wc += ecc.b2i(d[dx][20:24])
# Operations counter
for i in range(ecc.b2i(d[x][:4])):
dx = x + ecc.i2b(i+1, 4)
if len(d[dx]) in (ND, NC): tc += 1
# Balances
b = 0
for i in range(ecc.b2i(d[x][:4])):
dx = x + ecc.i2b(i+1, 4)
if dx not in d: return 0x0E # missing transaction
if len(d[dx]) == ND: b += ecc.b2i(d[x + ecc.i2b(i+1, 4)][20:24])
elif len(d[dx]) == NS: b -= ecc.b2i(d[d[dx][:12]][20:24])
if b != ecc.b2s(d[dx][-14:-10], 4): return 0x0F # bad balance
if b < -MAXBAL or b > MAXBAL: return 0x10 # Out of bounds
if wc != wr: return 0x11 # bad wealth
if tc != tr: return 0x12 # bad counter
if al != 0: return 0x13 # bad money supply
return 0 # Everythink ok !
class beacon:
ear, say, cts, go, current, k, price, balance = {}, {}, {}, False, None, ecc.ecdsa(), 0, 0
def __init__(s, arg):
s.p = int(arg)
if not ecc.os.path.exists('db%d'%s.p): ecc.os.makedirs('db%d'%s.p)
threading.Thread(target=s.server).start()
threading.Thread(target=s.client).start()
s.k.generate()
while (True):
c = input()
if c == "u": s.update() # -> download from backend
elif c == "g": s.stopgo() # -> stop/go
elif c == "s" and s.go == False: print(s.status()) # -> display status if stop
elif reg(re.match('^(\d\d)$', c)): s.pay(c)
elif len(c) > 24 and len(c) < 90: s.update(c) # -> try upload to backend
else: print('command not valid')
def pay(s, c):
s.price = int(c)
print ('PAY:%d' % s.price)
def status(s):
exposed = {}
print ('Balance %d' % s.balance)
if ecc.os.path.isfile('db%d/exposed'%s.p):
with dbm.open('db%d/exposed'%s.p) as b:
for x in b.keys(): exposed[x] = (datdecode(b[x][:4]), ecc.b2i(b[x][-1:]))
with dbm.open('db%d/hear'%s.p) as b:
for x in [y for y in b.keys() if y in exposed]:
return 'risk level %s %d' % (exposed[x][0], exposed[x][1])
return 'ok'
def stopgo(s):
print ("go/stop")
s.go = not s.go
def getid(s, phone, dest):
if s.price>0:
print ('PAYED %d to %s' % (s.price, dest))
s.balance -= s.price
return ecc.i2b(phone%256) + secrets.token_bytes(10) + dest + ecc.i2b(s.price)
def client(s):
m, n, i = s.getid(s.p, ecc.i2b(0, 4)), now(), 0
t = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with dbm.open('db%d/say'%s.p, 'c') as b: # said ids
while (True):
if s.go and (now() - n >= TICK):
n, i = now(), i + 1
if s.price > 0: i = 0
if not i % EPOC:
dest = ecc.i2b(0, 4)
if s.current in s.cts: dest = s.cts[s.current][1:5]
m = s.getid(s.p, dest)
s.price = 0
s.dump(b)
z = s.say[m]+1 if m in s.say else 0
# lattitude/longitude if captured (data stay on the phone!)
lt, lo = ecc.i2b(random.randint(0, 100), 2), ecc.i2b(random.randint(0, 100), 2)
s.say[m], b[m] = z, ecc.i2b(n, 4) + ecc.i2b(z, 4) + lt + lo
s.current = m
for x in [y for y in range(MAXC) if s.p!=BASP+y]: t.sendto(m, (HOST, BASP+x))
def dump(s, b):
f = open('db%d/dump'%s.p, 'bw')
for i in b.keys(): f.write(i) # contacts
for c in s.cts: f.write(c[:-1] + ecc.i2b(ecc.b2i(c[-1:]) + 0x10)) # contacts-contacts
f.close()
def short(s, m):
if m and len(m)>6: return m[:2] + m[-4:]
return m
def server(s):
t, n, buf, sdest = socket.socket(socket.AF_INET, socket.SOCK_DGRAM), now(), {}, ecc.i2b(0, 4)
t.bind((HOST, s.p))
while (True):
m = t.recvfrom(1024)[0]
if now() - n <= 4: buf[m] = True
else: n, buf = now(), {}
z, dest, price = s.ear[m]+1 if m in s.ear else 0, m[-5:-1], ecc.b2i(m[-1:])
if s.current: s.cts[s.current] = m
print (len(s.cts), s.short(m), z, len(buf), s.short(s.current))
if price > 0 and sdest != dest:
print ('RECEIVE %d' % price)
s.balance += price
sdest = dest
with dbm.open('db%d/hear'%s.p, 'c') as b: # heard ids
s.ear[m], b[m] = z, ecc.i2b(now(), 4) + ecc.i2b(z, 4)
def update(s, c=''):
if c == '':
print ('Update from backend')
r = requests.post(URLB)
else:
print ('Try to upload to backend with code\n%s' %c)
r = requests.post(URLB, files = {'file': open("db%d/dump"%s.p, "rb")}, data = {'c': c})
with open('db%d/exposed'%s.p, 'wb') as f:
for chk in r.iter_content(chunk_size=1024):
if chk: f.write(chk)