def __init__(self, groupObj):
IBEnc.__init__(self)
IBEnc.setProperty(self, secdef='IND_ID_CPA', assumption='DBDH', secmodel='Standard')
#, other={'id':ZR}
#message_space=[GT, 'KEM']
global group, hashObj
group = groupObj
hashObj = hashlib.new('sha1')
def __init__(self, groupObj):
IBEnc.__init__(self)
IBEnc.setProperty(self,
secdef='IND_sID_CPA',
assumption='DBDH',
message_space=[GT, 'KEM'],
secmodel='ROM',
other={'id': ZR})
global group
group = groupObj
def extract(self, mk, ID):
if not self.ibe_good: return IBEnc.extract(self, mk, ID)
if type(ID) == str:
ID2 = self.group.hash(ID)
return self.ibenc.extract(mk, ID2)
else:
assert False, "invalid type on ID."
def extract(self, mk, ID):
if not self.ibe_good: return IBEnc.extract(self, mk, ID)
if type(ID) == str:
ID2 = self.group.hash(ID)
return self.ibenc.extract(mk, ID2)
else:
assert False, "invalid type on ID."
def __init__(self, scheme, group):
IBEnc.__init__(self)
self.group = group
self.ibe_good = False
# validate that we have the appropriate object
if IBEnc.checkProperty(self, scheme, {'scheme':self.baseSchemeTypes.IBEnc,
'secdef':self.baseSecDefs.sIND_ID_CPA,
'id':ZR}):
self.ibenc = scheme
# change our property as well
IBEnc.setProperty(self, secdef='IND_ID_CPA', other={'id':str}, secmodel='ROM')
# check message space?
self.ibe_good = True
if not self.ibe_good:
assert False, "ibe object does not satisfy requirements."
def __init__(self, scheme, group):
IBEnc.__init__(self)
self.group = group
self.ibe_good = False
# validate that we have the appropriate object
if IBEnc.checkProperty(
self, scheme, {
'scheme': self.baseSchemeTypes.IBEnc,
'secdef': self.baseSecDefs.sIND_ID_CPA,
'id': ZR
}):
self.ibenc = scheme
# change our property as well
IBEnc.setProperty(self,
secdef='IND_ID_CPA',
other={'id': str},
secmodel='ROM')
# check message space?
self.ibe_good = True
if not self.ibe_good:
assert False, "ibe object does not satisfy requirements."
def __init__(self, groupObj):
IBEnc.__init__(self)
IBEnc.setProperty(self, secdef='IND_sID_CPA', assumption='DBDH',
message_space=[GT, 'KEM'], secmodel='ROM', other={'id':ZR})
global group
group = groupObj
def __init__(self, groupObj):
IBEnc.__init__(self)
global group,h,ZN
group = groupObj
h = Hash('sha1', group)
ZN = -1
def decrypt(self, pk, sk, ct):
if not self.ibe_good: return IBEnc.decrypt(self, pk, sk, ct)
return self.ibenc.decrypt(pk, sk, ct)
def encrypt(self, pk, ID, msg):
if not self.ibe_good: return IBEnc.encrypt(self, pk, ID, msg)
return self.ibenc.encrypt(pk, ID, msg)
def setup(self):
if not self.ibe_good: return IBEnc.setup(self)
return self.ibenc.setup()
def __init__(self, groupObj):
IBEnc.__init__(self)
global group,h,ZN
group = groupObj
h = Hash('sha1', group.Pairing)
ZN = -1
def decrypt(self, pk, sk, ct):
if not self.ibe_good: return IBEnc.decrypt(self, pk, sk, ct)
return self.ibenc.decrypt(pk, sk, ct)
def encrypt(self, pk, ID, msg):
if not self.ibe_good: return IBEnc.encrypt(self, pk, ID, msg)
return self.ibenc.encrypt(pk, ID, msg)
def setup(self):
if not self.ibe_good: return IBEnc.setup(self)
return self.ibenc.setup()