cgw15

Jie Chen, Romain Gay, and Hoeteck Wee

From: “Improved Dual System ABE in Prime-Order Groups via Predicate Encodings”

Published in: 2015

Available from: http://eprint.iacr.org/2015/409

Notes: Implemented the scheme in Appendix B.2

Security Assumption: k-linear

type: ciphertext-policy attribute-based encryption

setting: Pairing

Authors:Shashank Agrawal Date:5/2016

class cgw15.CGW15CPABE(groupObj, assump_size, uni_size, verbose=False)

Bases: charm.toolbox.ABEnc.ABEnc

decrypt(pk, ctxt, key)

Decrypt ciphertext ctxt with key key.

encrypt(pk, msg, policy_str)

Encrypt a message M under a policy string.

keygen(pk, msk, attr_list)

Generate a key for a set of attributes.

setup()

Generates public key and master secret key.