README

Paper link: https://scholar.google.com/citations?view_op=view_citation&hl=en&user=bToAUHMAAAAJ&sortby=pubdate&citation_for_view=bToAUHMAAAAJ:9LpHyFPp1DQC

An Efficient and Secure Post-Quantum Multi-Authority Ciphertext-Policy Attribute-Based Encryption Method Using Lattice

This project contains the implemented codebase for the methods and procedures described in above paper.

How to Run:
python main.py

Set parameters in config.py:

• (N) number of authorities
• (f) degree of polynomial - power of 2
• (q) large prime number
• (m) positive integer of form $\lfloor(\log_b(q) + 1)\rfloor + 2$
• (attr) number of attributes
• (V) parameter for linear combination of z

Algorithms

1. AA.py - Authoriy

   • AASetup
   • SecretKey
   • Decryption

2. KGC.py - Key Generation Center

   • Setup

3. User.py

   • Access Control
   • Encryption

4. algo

   • TrapGen (proxy to be replaced)