Copy and Save to Hybrid_Quantum_Classical_Defense_System.py
import os
import hashlib
import binascii
import secrets
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.backends import default_backend
Minimal quantum-resistant components
class QuantumResistantDefense:
def init(self):
# Using XMSS (eXtended Merkle Signature Scheme) inspired approach
# Note: This is a simplified simulation for demonstration
self.hash_algorithm = hashlib.sha3_512
def generate_quantum_key(self, length=64):
"""Generate a quantum-resistant key using OS randomness"""
return secrets.token_bytes(length)
def quantum_hash(self, data):
"""Quantum-resistant hash function using SHA3-512"""
if isinstance(data, str):
data = data.encode('utf-8')
return self.hash_algorithm(data).digest()
def lattice_based_encrypt(self, plaintext, key):
"""Simulate lattice-based encryption using AES as a stand-in"""
# In a real implementation, this would use an actual lattice-based algorithm
iv = os.urandom(16)
cipher = Cipher(algorithms.AES(key), modes.CFB(iv), backend=default_backend())
encryptor = cipher.encryptor()
ciphertext = encryptor.update(plaintext) + encryptor.finalize()
return iv + ciphertext
def lattice_based_decrypt(self, ciphertext, key):
"""Simulate lattice-based decryption using AES as a stand-in"""
iv = ciphertext[:16]
ciphertext = ciphertext[16:]
cipher = Cipher(algorithms.AES(key), modes.CFB(iv), backend=default_backend())
decryptor = cipher.decryptor()
plaintext = decryptor.update(ciphertext) + decryptor.finalize()
return plaintext
class TraditionalDefense:
def init(self):
self.kdf_iterations = 100000
def derive_key(self, password, salt):
"""Key derivation function for traditional encryption"""
kdf = PBKDF2HMAC(
algorithm=hashes.SHA256(),
length=32,
salt=salt,
iterations=self.kdf_iterations,
backend=default_backend()
)
return kdf.derive(password.encode())
def encrypt_file(self, file_path, key):
"""Encrypt a file using traditional AES encryption"""
iv = os.urandom(16)
cipher = Cipher(algorithms.AES(key), modes.CFB(iv), backend=default_backend())
encryptor = cipher.encryptor()
with open(file_path, 'rb') as f:
plaintext = f.read()
ciphertext = encryptor.update(plaintext) + encryptor.finalize()
encrypted_path = file_path + '.enc'
with open(encrypted_path, 'wb') as f:
f.write(iv + ciphertext)
return encrypted_path
def decrypt_file(self, file_path, key):
"""Decrypt a file using traditional AES encryption"""
with open(file_path, 'rb') as f:
data = f.read()
iv = data[:16]
ciphertext = data[16:]
cipher = Cipher(algorithms.AES(key), modes.CFB(iv), backend=default_backend())
decryptor = cipher.decryptor()
plaintext = decryptor.update(ciphertext) + decryptor.finalize()
decrypted_path = file_path.replace('.enc', '.dec')
with open(decrypted_path, 'wb') as f:
f.write(plaintext)
return decrypted_path
class HybridDefenseSystem:
def init(self):
self.quantum = QuantumResistantDefense()
self.traditional = TraditionalDefense()
self.quantum_key_cache = {}
def secure_message(self, message):
"""Protect a message with hybrid quantum-classical encryption"""
# Generate a quantum-resistant key
q_key = self.quantum.generate_quantum_key()
# Encrypt with quantum-resistant algorithm
encrypted = self.quantum.lattice_based_encrypt(message.encode('utf-8'), q_key)
# Hash the quantum key for storage
key_hash = self.quantum.quantum_hash(q_key)
self.quantum_key_cache[key_hash] = q_key
return {
'encrypted_message': binascii.hexlify(encrypted).decode('utf-8'),
'key_hash': binascii.hexlify(key_hash).decode('utf-8')
}
def retrieve_message(self, encrypted_data):
"""Retrieve a message protected with hybrid encryption"""
encrypted_message = binascii.unhexlify(encrypted_data['encrypted_message'])
key_hash = binascii.unhexlify(encrypted_data['key_hash'])
if key_hash not in self.quantum_key_cache:
raise ValueError("Quantum key not found in cache")
q_key = self.quantum_key_cache[key_hash]
decrypted = self.quantum.lattice_based_decrypt(encrypted_message, q_key)
return decrypted.decode('utf-8')
def secure_file(self, file_path, password):
"""Protect a file with hybrid security"""
# First layer: traditional encryption with strong KDF
salt = os.urandom(16)
key = self.traditional.derive_key(password, salt)
encrypted_path = self.traditional.encrypt_file(file_path, key)
# Second layer: quantum-resistant metadata protection
file_hash = self.quantum.quantum_hash(open(file_path, 'rb').read())
return {
'encrypted_file': encrypted_path,
'salt': binascii.hexlify(salt).decode('utf-8'),
'file_hash': binascii.hexlify(file_hash).decode('utf-8')
}
def verify_file_integrity(self, file_path, expected_hash):
"""Verify file integrity using quantum-resistant hash"""
file_hash = self.quantum.quantum_hash(open(file_path, 'rb').read())
expected_hash = binascii.unhexlify(expected_hash)
return file_hash == expected_hash
def main():
print("Hybrid Quantum-Classical Defense System")
print("Designed for Termux with minimal dependencies\n")
defense = HybridDefenseSystem()
# Example usage
message = "Top secret quantum data"
print(f"Original message: {message}")
# Secure the message
secured = defense.secure_message(message)
print(f"\nSecured message data: {secured}")
# Retrieve the message
retrieved = defense.retrieve_message(secured)
print(f"\nRetrieved message: {retrieved}")
# File protection example
print("\nFile protection example:")
test_file = "test.txt"
with open(test_file, 'w') as f:
f.write("Sample file content for encryption demo")
password = "strong_password_123"
secured_file = defense.secure_file(test_file, password)
print(f"File secured: {secured_file['encrypted_file']}")
# Verify file integrity
is_valid = defense.verify_file_integrity(test_file, secured_file['file_hash'])
print(f"File integrity valid: {is_valid}")
if name == "main":
main()
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