pksig_ps03

Pointcheval-Sanders Signature (PS16) - Committed Messages

Authors: D. Pointcheval, O. Sanders

Title: “Short Randomizable Signatures”

Published in: CT-RSA, 2016

Available from: https://eprint.iacr.org/2015/525.pdf

Notes: Section 6.1 - Signatures over committed messages.

Scheme Properties

• Type: signature (public key)

• Setting: bilinear groups (asymmetric)

• Assumption: PS assumption

Implementation

Authors:

Lovesh Harchandani

Date:

6/2018

class pksig_ps03.PS01(groupObj)

Bases: object

Signatures over committed messages, section 6.1 of the paper

commitment(pk, *messages)

static keygen(num_messages=1)

static product(seq)

randomize_sig(sig)

sign(sk, pk, commitment)

static unblind_signature(t, sig)

verify(pk, sig, *messages)

pksig_ps03.main()