# Proteus — multi-layer encryption with dynamic permutation
def encrypt(data: bytes, keys: list[bytes]) -> bytes:
    for key in keys:
        data = dpg_permute(data, key)      # Dynamic Permutation Generation
        data = aead_seal(data, key)        # Authenticated encryption
    return honey_engine.wrap(data)      # deception-based decoys

# FadeDrop — zero-knowledge encrypted file sharing
async def upload(file: UploadFile, password: str):
    key = derive_key(password)             # HKDF
    encrypted = fernet_encrypt(file, key)  # local, before upload
    token = issue_token(expiry="24h")
    return qr_code(token)               # single-use, password protected

# ZeroNetPay — offline UPI token transfer
def create_token(amount: float, upi_id: str) -> str:
    payload = {"amount": amount, "upi_id": upi_id, "ts": now()}
    signature = hmac_sha256(payload, device_key)
    return qr_encode(payload, signature)  # scan-to-pay, no internet needed