def __init__(self, symbol_graph):
'''
Constructor
'''
# initialize CPABE object
self._group = PairingGroup('SS512')
self._cpabe = CPabe_BSW07(self._group)
self._hyb_abe = HybridABEnc(self._cpabe, self._group)
#access_policy = '(ar and bc)'
#message = "hello world this is an important message."
#(pk, mk) = self._hyb_abe.setup()
#sk = self._hyb_abe.keygen(pk, mk, ['AR', 'BC'])
#ct = self._hyb_abe.encrypt(pk, message, access_policy)
#try:
# result = self._hyb_abe.decrypt(pk, sk, ct)
# print result
#except Exception:
# pass
# attributes should be vertices
# since its diDraph, the query of two vertices sequence matters
# row and col symbol is interpreted differently
self._symbol_graph = symbol_graph
symbols = self._symbol_graph.get_keys()
for i in symbols:
# r means row attributes
self._attributes.append(symbols[i] + 'r')
# c means column attributes
self._attributes.append(symbols[i] + 'c')
def test_charm_crypto():
# instantiate a bilinear pairing map
pairing_group = PairingGroup('MNT224')
cpabe = CPabe_BSW07(pairing_group)
hyb_abe = HybridABEnc(cpabe, pairing_group)
# run the set up
(pk, msk) = hyb_abe.setup() # Public Key and Master SECRET Key
# generate a key
attr_list = ['U-11890454', 'D-46', 'D-46-GUEST']
key = hyb_abe.keygen(pk, msk, attr_list)
serialized_pk = serialize_charm_object(pk, pairing_group)
pk = deserialize_charm_object(serialized_pk, pairing_group)
serialized_key = serialize_charm_object(key, pairing_group)
key = deserialize_charm_object(serialized_key, pairing_group)
# choose a random message
msg = "Hello World"
# generate a ciphertext
policy_str = '(u-11890454 OR d-46 OR d-46-GUEST)' # evaluates to "((U-11890454 or D-46) or D-46-GUEST)" - see upper chars
ctxt = hyb_abe.encrypt(pk, msg, policy_str)
policy_str = '(u-1 AND d-46 AND d-46-GUEST)' # Re-encrypted data with new policy
ctxt2 = hyb_abe.encrypt(pk, msg, policy_str)
# decryption
rec_msg = hyb_abe.decrypt(pk, key, ctxt).decode("utf-8")
with pytest.raises(Exception):
hyb_abe.decrypt(pk, key, ctxt2)
assert rec_msg == msg, "Failed." # "First successfully decrypted, second not."
def decrypt(self, master_public_key, sk, cipher_matrix, vertices):
'''
Decryption requires master_public_key, user secret key, and cipher
'''
group = PairingGroup('SS512')
cpabe = CPabe_BSW07(group)
hyb_abe = HybridABEnc(cpabe, group)
N = len(vertices)
resMat = [None] * N
for i in range(0, N):
resMat[i] = [None] * N
for j in range(0, N):
#convert to lower case
s = vertices[i].lower()
s2 = vertices[j].lower()
cipher = cipher_matrix.get_cell_by_symbol(s, s2)
resMat[i][j] = hyb_abe.decrypt(master_public_key, sk, cipher)
if resMat[i][j] == False:
return False
result = AdjMatrixDiGraph(mat=resMat)
return SymbolDiGraphMat(vertices, G=result)
def __init__(self, group = "SS512"):
self._group = PairingGroup(group)
self._cpabe = CPabe09(self._group)
self._hybrid_abe = HybridABEnc(self._cpabe, self._group)
# TODO: Master keys should be generated once and stored securely
# somewhere else.
self._master_secret, self._master_public = self._cpabe.setup()
def testHybridABEnc(self):
groupObj = PairingGroup('SS512')
cpabe = CPabe_BSW07(groupObj)
hyb_abe = HybridABEnc(cpabe, groupObj)
access_policy = '((four or three) and (two or one))'
message = b"hello world this is an important message."
(pk, mk) = hyb_abe.setup()
if debug: print("pk => ", pk)
if debug: print("mk => ", mk)
sk = hyb_abe.keygen(pk, mk, ['ONE', 'TWO', 'THREE'])
if debug: print("sk => ", sk)
ct = hyb_abe.encrypt(pk, message, access_policy)
mdec = hyb_abe.decrypt(pk, sk, ct)
assert mdec == message, "Failed Decryption!!!"
if debug: print("Successful Decryption!!!")
def decrypt_query(self, master_public_key, sk, cipher_matrix, queries):
'''
Decryption requires master_public_key, user secret key, and cipher
'''
group = PairingGroup('SS512')
cpabe = CPabe_BSW07(group)
hyb_abe = HybridABEnc(cpabe, group)
msg = ''
for query in queries:
#convert to lower case
s1 = query[0].lower()
s2 = query[1].lower()
cipher = cipher_matrix.get_cell_by_symbol(s1, s2)
msg += hyb_abe.decrypt(master_public_key, sk, cipher) + " "
return msg
def main():
groupObj = PairingGroup('SS512')
cpabe = CPabe_BSW07(groupObj)
abe = HybridABEnc(cpabe, groupObj)
f1 = open("private/pk_bytes", "rb")
f2 = open("private/mk_bytes", "rb")
pk = f1.read()
mk = f2.read()
orig_pk = bytesToObject(pk, groupObj)
orig_mk = bytesToObject(mk, groupObj)
print(orig_pk)
# (pk,mk) = create_pk_mk_abe(abe)
attrs1 = ['CANHTUAN','DUY','MANH']
attrs2 = ['CANHTUAN','DUY']
msg = "canhtuan".encode('utf-8')
# policy = create_policy_abe(attrs2)
policy = '(CANHTUAN and DUY and MANH)'
# print(policy)
sk2 = create_scret_key(abe,orig_pk,orig_mk,attrs1)
ct = encrypt_abe(abe,orig_pk,"tuan".encode('utf-8'), policy)
# print(ct)
ct =b'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'
giaima = decrypt_abe(abe,orig_pk, sk2, ct)
print(giaima)
# main()
from config import *
import requests
from charm.toolbox.pairinggroup import PairingGroup
from charm.schemes.abenc.abenc_bsw07 import CPabe_BSW07
from charm.adapters.abenc_adapt_hybrid import HybridABEnc
from charm.core.engine.util import objectToBytes, bytesToObject
policy_length = 16
key_size = 8
groupObj = PairingGroup('SS512')
cpabe = CPabe_BSW07(groupObj)
hybrid_abe = HybridABEnc(cpabe, groupObj)
master_key_file_name = "master_key.json"
def init_abe():
groupObj = PairingGroup('SS512')
cpabe = CPabe_BSW07(groupObj)
abe = HybridABEnc(cpabe, groupObj)
print(abe)
return (abe)
def initABE():
groupObj = PairingGroup('SS512')
cpabe = CPabe_BSW07(groupObj)
abe = HybridABEnc(cpabe, groupObj)
return abe
def create_cp_abe():
pairing_group = create_pairing_group()
cpabe = CPabe_BSW07(pairing_group)
return HybridABEnc(cpabe, pairing_group)