pksig_waters09

Brent Waters (Pairing-based)

From: “Dual System ENcryption: Realizing Fully Secure IBE and HIBE under Simple Assumptions”

Published in: CRYPTO 2009

Available from: http://eprint.iacr.org/2009/385.pdf

Notes:

• type: identity-based encryption (public key)
• setting: Pairing

Authors:J Ayo Akinyele Date:2/2012 Improved by:Fan Zhang, 3/2013 Notes:Only minor changes has been made. Deleted the alpha from msk and added g2^-alpha into it.

class pksig_waters09.IBEWaters09(groupObj)

Bases: charm.toolbox.IBEnc.IBEnc

>>> group = PairingGroup('MNT224')
>>> ibe = IBEWaters09(group)
>>> (master_public_key, master_secret_key) = ibe.keygen()
>>> msg = "plese sign this message!!!!"
>>> signature = ibe.sign(master_public_key, master_secret_key, msg)
>>> ibe.verify(master_public_key, signature, msg)
True

keygen()

sign(mpk, msk, m)

verify(mpk, sigma, m)

pksig_waters09.main()