abenc_yct14

Lightweight Key-Policy ABE for IoT (YCT14)

Authors: Xuanxia Yao, Zhi Chen, Ye Tian

Title: “A lightweight attribute-based encryption scheme for the Internet of things”

Published in: Future Generation Computer Systems, 2014

Available from: http://www.sciencedirect.com/science/article/pii/S0167739X14002039

Notes: Designed for resource-constrained IoT devices

Scheme Properties

• Type: key-policy attribute-based encryption (public key)

• Setting: No Pairing (lightweight)

• Assumption: Computational Diffie-Hellman

Implementation

Authors:

artjomb

Date:

10/2014

class abenc_yct14.EKPabe(groupObj, verbose=False)

Bases: ABEnc

>>> from charm.toolbox.pairinggroup import PairingGroup,GT
>>> group = PairingGroup('MNT224')
>>> kpabe = EKPabe(group)
>>> attributes = [ 'ONE', 'TWO', 'THREE', 'FOUR' ]
>>> (master_public_key, master_key) = kpabe.setup(attributes)
>>> policy = '(ONE or THREE) and (THREE or TWO)'
>>> secret_key = kpabe.keygen(master_public_key, master_key, policy)
>>> msg = b"Some Random Message"
>>> cipher_text = kpabe.encrypt(master_public_key, msg, attributes)
>>> decrypted_msg = kpabe.decrypt(cipher_text, secret_key)
>>> decrypted_msg == msg
True

decrypt(C, D)

encrypt(pk, M, attr_list)

keygen(pk, mk, policy_str)

setup(attributes)

abenc_yct14.benchmark()

abenc_yct14.main()