nexus-crypt 1.0.0

Post-quantum cryptographic suite with PFS, encryption, signatures, and hashing

NEXUS-Crypt

Post-Quantum Cryptographic Suite with Perfect Forward Secrecy

NEXUS-Crypt is a unified cryptographic library combining:

• NEXUS-Cipher: Custom lattice based symmetric encryption
• ML-KEM (Kyber): Key encapsulation for Perfect Forward Secrecy
• ML-DSA (Dilithium): Post-quantum digital signatures
• SHA-256: Cryptographic hashing

Features

Post-quantum secure (resistant to quantum computer attacks)
Perfect Forward Secrecy (PFS) via ML-KEM
Authenticated encryption with ML-DSA signatures
Constant time operations (side-channel resistant)
Easy to use API

Installation

pip install nexus-crypt

Quick Start

from nexus import NEXUS

nexus = NEXUS(key_size=256)

kem_pk, kem_sk = nexus.generate_kem_keypair()
sign_pk, sign_sk = nexus.generate_signing_keypair()

ciphertext, shared_secret = nexus.establish_session(kem_pk)

message = b"Secret data"
package = nexus.encrypt_and_sign(message, sign_sk)

plaintext = nexus.verify_and_decrypt(package, sign_pk)

Security Properties

• Quantum Resistance: Based on lattice problems (LWE, NTRU)
• Key Sizes: 256, 384, or 512 bits
• Block Size: 512 bits (64 bytes)
• Rounds: 20-24 depending on key size

Use Cases

• Automotive CAN bus encryption
• OTA firmware updates
• V2X communication
• IoT device security
• Secure messaging

License

MIT License

Author

Harshith Madhavaram MS Cybersecurity '2027 Northeastern University, Boston

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## `.gitignore`**

pycache/ *.py[cod] *$py.class *.so .Python build/ develop-eggs/ dist/ downloads/ eggs/ .eggs/ lib/ lib64/ parts/ sdist/ var/ wheels/ *.egg-info/ .installed.cfg *.egg .pytest_cache/ .coverage htmlcov/ .env venv/ ENV/