abenc_unmcpabe_yahk14¶
Yamada, Attrapadung, Hanaoka, Kunihiro
From: “A Framework and Compact Constructions for Non-monotonic Attribute-Based Encryption”
Published in: Public-Key Cryptography–PKC 2014
Pages: 275–292
Available from: http://eprint.iacr.org/2014/181 Sec. 7
Notes:
- type: attribute-based encryption (public key)
- setting: bilinear pairing group of prime order
- assumption: complex q-type assumption
Authors: | al, artjomb |
---|---|
Date: | 07/15 |
-
class
abenc_unmcpabe_yahk14.
CPABE_YAHK14
(groupObj, verbose=False)[source]¶ Bases:
charm.toolbox.ABEnc.ABEnc
>>> from charm.toolbox.pairinggroup import PairingGroup,ZR,G1,G2,GT,pair >>> group = PairingGroup('SS512') >>> cpabe = CPABE_YAHK14(group) >>> msg = group.random(GT) >>> attributes = ['2', '3'] # must be integer strings >>> access_policy = '2 and !1' # must be integer strings >>> (master_public_key, master_key) = cpabe.setup() >>> secret_key = cpabe.keygen(master_public_key, master_key, attributes) >>> cipher_text = cpabe.encrypt(master_public_key, msg, access_policy) >>> decrypted_msg = cpabe.decrypt(master_public_key, secret_key, cipher_text) >>> msg == decrypted_msg True