def main():
"""Wrapper function to decrypt a ciphertext file using the
Bethencourt2007cae CP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Decrypts a given ciphertext, with name <fname>.cpabe,"
" using the provided decryption key.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters." +
" Default: %(default)s")
parser.add_argument('--ctxt',
required=True,
dest='ctxt',
type=str,
help="The name of the file containing the" +
" ciphertext to be decrypted.")
parser.add_argument('--dkey',
required=True,
dest='dkey',
type=str,
help="The name of the file containing the" +
" decryption key")
args = parser.parse_args()
if not args.ctxt.endswith(".cpabe"):
print("Ciphertext needs to end with .cpabe")
sys.exit(-1)
ptxt_fname = args.ctxt.replace(".cpabe", ".prime")
group = PairingGroup('SS512')
mpk = read_key_from_file(args.mpk, group)
dkey = read_key_from_file(args.dkey, group)
try:
raw = cpabe_decrypt(group, mpk, dkey, io.open(args.ctxt, 'rb'))
except PebelDecryptionException as e:
print("Unable to decrypt ciphertext: {}".format(e))
sys.exit(-1)
else:
with io.open(ptxt_fname, 'wb') as ptxt:
for b in raw:
ptxt.write(bytes([b]))
ptxt.flush()
def main():
"""Wrapper function to decrypt a ciphertext file using the
Bethencourt2007cae CP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Decrypts a given ciphertext, with name <fname>.cpabe,"
" using the provided decryption key.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters."+
" Default: %(default)s")
parser.add_argument('--ctxt',
required=True,
dest='ctxt',
type=str,
help= "The name of the file containing the" +
" ciphertext to be decrypted.")
parser.add_argument('--dkey',
required=True,
dest='dkey',
type=str,
help="The name of the file containing the" +
" decryption key")
args = parser.parse_args()
if not args.ctxt.endswith(".cpabe"):
print("Ciphertext needs to end with .cpabe")
sys.exit(-1)
ptxt_fname = args.ctxt.replace(".cpabe", ".prime")
group = PairingGroup('SS512')
mpk = read_key_from_file(args.mpk, group)
dkey = read_key_from_file(args.dkey, group)
try:
#ctxt = io.open(args.ctxt, 'rb').readlines()
raw = cpabe_decrypt(group, mpk, dkey, io.open(args.ctxt, 'rb'))
except PebelDecryptionException as e:
print("Unable to decrypt ciphertext: {}".format(e))
sys.exit(-1)
else:
with io.open(ptxt_fname, 'wb') as ptxt:
ptxt.write(raw)
'''
def main():
"""Wrapper function to generate decryption keys for the
Bethencourt2007cae CP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Generates decryption keys from a set of attributes" +
" for the BSW2007cae CP-ABE Scheme.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters." +
" Default: %(default)s")
parser.add_argument('--msk',
required=True,
dest='msk',
type=str,
help="The name of the Master Secret Key." +
" Default: %(default)s")
parser.add_argument('--dkey-out',
default="bob.cp.dkey",
dest='dkey',
type=str,
help="The name of the file in which to store" +
" the decryption key. Default: %(default)s")
parser.add_argument(
'attributes',
nargs=argparse.REMAINDER,
help="The attributes used to construct the secret key.")
args = parser.parse_args()
group = PairingGroup('SS512')
msk = read_key_from_file(args.msk, group)
mpk = read_key_from_file(args.mpk, group)
attributes = [a.upper() for a in args.attributes]
dec_key = cpabe_keygen(group, msk, mpk, attributes)
write_key_to_file(args.dkey, dec_key, group)
def main():
"""Wrapper function to generate decryption keys for the
Bethencourt2007cae CP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Generates decryption keys from a set of attributes" +
" for the BSW2007cae CP-ABE Scheme.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters." +
" Default: %(default)s")
parser.add_argument('--msk',
required=True,
dest='msk',
type=str,
help="The name of the Master Secret Key." +
" Default: %(default)s")
parser.add_argument('--dkey-out',
default="bob.cp.dkey",
dest='dkey',
type=str,
help="The name of the file in which to store" +
" the decryption key. Default: %(default)s")
parser.add_argument('attributes',
nargs=argparse.REMAINDER,
help="The attributes used to construct the secret key.")
args = parser.parse_args()
group = PairingGroup('SS512')
msk = read_key_from_file(args.msk, group)
mpk = read_key_from_file(args.mpk, group)
attributes = [a.upper() for a in args.attributes]
dec_key = cpabe_keygen(group, msk, mpk, attributes)
write_key_to_file(args.dkey, dec_key, group)
def main():
"""Wrapper function to generate decryption keys for the
Lewko2008rsw KP-ABE Scheme."""
parser = argparse.ArgumentParser(
description="Generates decryption keys from a policy" + " for the Lewko2008rsw KP-ABE Scheme."
)
parser.add_argument(
"--mpk",
required=True,
dest="mpk",
type=str,
help="The name of the Public Parameters." + " Default: %(default)s",
)
parser.add_argument(
"--msk",
required=True,
dest="msk",
type=str,
help="The name of the Master Secret Key." + " Default: %(default)s",
)
parser.add_argument(
"--dkey-out",
default="bob.kp.dkey",
dest="dkey",
type=str,
help="The name of the file in which to store" + " the decryption key. Default: %(default)s",
)
parser.add_argument("policy", help="The policy used to construct the secret key.")
args = parser.parse_args()
group = PairingGroup("MNT224")
msk = read_key_from_file(args.msk, group)
mpk = read_key_from_file(args.mpk, group)
dec_key = kpabe_keygen(group, msk, mpk, args.policy)
write_key_to_file(args.dkey, dec_key, group)
def main():
"""Wrapper function to generate decryption keys for the
Lewko2008rsw KP-ABE Scheme."""
parser = argparse.ArgumentParser(
description="Generates decryption keys from a policy" +
" for the Lewko2008rsw KP-ABE Scheme.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters." +
" Default: %(default)s")
parser.add_argument('--msk',
required=True,
dest='msk',
type=str,
help="The name of the Master Secret Key." +
" Default: %(default)s")
parser.add_argument('--dkey-out',
default="bob.kp.dkey",
dest='dkey',
type=str,
help="The name of the file in which to store" +
" the decryption key. Default: %(default)s")
parser.add_argument('policy',
help="The policy used to construct the secret key.")
args = parser.parse_args()
group = PairingGroup('MNT224')
msk = read_key_from_file(args.msk, group)
mpk = read_key_from_file(args.mpk, group)
dec_key = kpabe_keygen(group, msk, mpk, args.policy)
write_key_to_file(args.dkey, dec_key, group)
def main():
"""Wrapper function to encrypt a file using the
Lewko2008rsw KP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Encrypts a named file under a given set of attributes"
" using the Lewko2008rsw KP-ABE Scheme."
)
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the public parameters"
" Default: %(default)s"
)
parser.add_argument('--ptxt',
required=True,
dest='ptxt',
type=str,
help="A file containing the plaintext to be encrypted."
)
parser.add_argument('attributes',
nargs=argparse.REMAINDER,
help="The attributes used to encrypt the plain-text"
)
args = parser.parse_args()
group = PairingGroup('MNT224')
mpk = read_key_from_file(args.mpk, group)
ctxt = kpabe_encrypt(group, mpk, io.open(args.ptxt, 'rb'), args.attributes)
ctxt_fname = "".join([args.ptxt, ".kpabe"])
with io.open(ctxt_fname, 'wb') as ctxt_file:
for b in ctxt:
ctxt_file.write(bytes(b))
def main():
"""Wrapper function to encrypt a file using the
Lewko2008rsw KP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Encrypts a named file under a given set of attributes"
" using the Lewko2008rsw KP-ABE Scheme."
)
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the public parameters"
" Default: %(default)s"
)
parser.add_argument('--ptxt',
required=True,
dest='ptxt',
type=str,
help="A file containing the plaintext to be encrypted."
)
parser.add_argument('attributes',
nargs=argparse.REMAINDER,
help="The attributes used to encrypt the plain-text"
)
args = parser.parse_args()
group = PairingGroup('MNT224')
mpk = read_key_from_file(args.mpk, group)
ctxt = kpabe_encrypt(group, mpk, io.open(args.ptxt, 'rb'), args.attributes)
ctxt_fname = "".join([args.ptxt, ".kpabe"])
with io.open(ctxt_fname, 'wb') as ctxt_file:
for b in ctxt:
ctxt_file.write(bytes([b]))
def main():
"""Wrapper function to encrypt a file using the Bethencourt2007cae
CP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Encrypts a named file under a given policy using the" +
" BSW2007cae CP-ABE Scheme.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters." +
" Default: %(default)s")
parser.add_argument(
'--ptxt',
required=True,
dest='ptxt',
type=str,
help="A file containing the plaintext to be encrypted.")
parser.add_argument('policy',
help="The policy used to encrypt the plaintext under.")
args = parser.parse_args()
group = PairingGroup('SS512')
mpk = read_key_from_file(args.mpk, group)
ctxt = cpabe_encrypt(group, mpk, io.open(args.ptxt, 'rb'), args.policy)
ctxt_fname = "".join([args.ptxt, ".cpabe"])
with io.open(ctxt_fname, 'wb') as ctxt_file:
ctxt_file.write(ctxt)
'''
def main():
"""Wrapper function to encrypt a file using the Bethencourt2007cae
CP-ABE Scheme.
"""
parser = argparse.ArgumentParser(
description="Encrypts a named file under a given policy using the" +
" BSW2007cae CP-ABE Scheme.")
parser.add_argument('--mpk',
required=True,
dest='mpk',
type=str,
help="The name of the Public Parameters."+
" Default: %(default)s")
parser.add_argument('--ptxt',
required=True,
dest='ptxt',
type=str,
help="A file containing the plaintext to be encrypted.")
parser.add_argument('policy',
help="The policy used to encrypt the plaintext under.")
args = parser.parse_args()
group = PairingGroup('SS512')
mpk = read_key_from_file(args.mpk, group)
ctxt = cpabe_encrypt(group, mpk, io.open(args.ptxt,'rb'), args.policy)
ctxt_fname = "".join([args.ptxt, ".cpabe"])
with io.open(ctxt_fname, 'wb') as ctxt_file:
for b in ctxt:
ctxt_file.write(bytes([b]))