https://github.com/jacksonwalters/open-encrypt

Encrypted messaging webapp using lattice-based methods in Python + PHP + SQL
https://github.com/jacksonwalters/open-encrypt

cryptography encryption homomorphic-encryption lattice-based lattice-based-cryptography module-lwe php post-quantum post-quantum-cryptography python ring-lwe sql

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Encrypted messaging webapp using lattice-based methods in Python + PHP + SQL

• Host: GitHub
• URL: https://github.com/jacksonwalters/open-encrypt
• Owner: jacksonwalters
• License: mit
• Created: 2024-09-04T17:02:59.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2024-11-26T05:51:14.000Z (5 months ago)
• Last Synced: 2024-11-26T06:30:06.301Z (5 months ago)
• Topics: cryptography, encryption, homomorphic-encryption, lattice-based, lattice-based-cryptography, module-lwe, php, post-quantum, post-quantum-cryptography, python, ring-lwe, sql
• Language: PHP
• Homepage: https://open-encrypt.com
• Size: 85 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# open-encrypt

Full-stack encrypted messaging application using lattice-based methods in Python + PHP + SQL.

**NOTE**: This is a demo for educational purposes only. It is not meant for real-world use.

**ENCRYPTION METHODS**: ring-LWE, module-LWE

**RESOURCES**:

- ring-LWE in Python: https://blog.openmined.org/build-an-homomorphic-encryption-scheme-from-scratch-with-python/

- ring-LWE math: https://math.colorado.edu/~kstange/teaching-resources/crypto/RingLWE-notes.pdf

- module-LWE in Python: https://cryptographycaffe.sandboxaq.com/posts/kyber-01/

- Red Hat Post-Quantum/Lattices: https://www.redhat.com/en/blog/post-quantum-cryptography-lattice-based-cryptography

- NIST Post-Quantum: https://csrc.nist.gov/projects/post-quantum-cryptography

- Latticed-based cryptography: https://thelatticeclub.com

---

**SQL**: 

- Three tables are required to store login_info, messages, and public_keys.

- Passwords are hashed using standard hashing. 

- Secure, random tokens stored for user sessions.

- Messages are stored encrypted. The inflation ratio is ~13.7 for ring-LWE.

- For ring-LWE, public keys are a `string` representing two (cyclotomic, modular) polynomials as `int` arrays.

- For module-LWE, public keys are a `string` representing a matrix `A` and vector `t` with (cyclotomic, modular) polynomial coefficients.

**PHP**:

Used to handle basic account creation, login, and SQL insertions/lookups. 

**Python**:

Python scripts are executed directly using `shell_exec`. Output is printed and passed back as a string.