Password: Breezip

This feature is **complete, runnable, and ready to integrate** into a larger application or use as a standalone password manager. </code></pre>

def delete_entry(self): """Delete a service entry.""" service = input("Service name to delete: ").strip() if service in self.data: del self.data[service] self.save() print(f"✅ 'service' deleted.") else: print(f"❌ 'service' not found.")

def save(self): """Save data to encrypted file.""" if not self.master_password: print("❌ Master password not set.") return json_str = json.dumps(self.data, indent=2) enc_content = self._encrypt(json_str, self.master_password) with open(STORAGE_FILE, "w") as f: f.write(enc_content) print("✅ Data saved securely.") breezip password

- The storage file `storage.enc` is encrypted but **not** resistant to offline brute‑force if master password is weak. - Use a **strong master password** (≥12 chars, mixed case, numbers, symbols). - For production, consider adding **key stretching (Argon2)** and **authentication (HMAC)**.

STORAGE_FILE = "storage.enc" SALT_SIZE = 16 IV_SIZE = 16 ITERATIONS = 100_000 This feature is **complete, runnable, and ready to

def set_master_password(self): """Initialize or change master password.""" while True: pwd1 = getpass.getpass("New master password: ") pwd2 = getpass.getpass("Confirm master password: ") if pwd1 == pwd2 and len(pwd1) >= 6: self.master_password = pwd1 print("✅ Master password set.") break else: print("❌ Passwords must match and be at least 6 chars.")

def _derive_key(self, password: str, salt: bytes) -> bytes: """Derive a 32-byte AES key from master password using PBKDF2.""" kdf = PBKDF2( algorithm=hashes.SHA256(), length=32, salt=salt, iterations=ITERATIONS, backend=default_backend() ) return kdf.derive(password.encode()) - For production

def run(self): """Main CLI loop.""" print("=" * 50) print("🔐 BreeZip Password Manager v1.0") print("=" * 50) if not os.path.exists(STORAGE_FILE): print("First run: Create a master password.") self.set_master_password() else: self.load() if not self.master_password: print("Exiting.") return