  Traditional and lightweight cryptography primitives and protocols are
insecure against quantum attacks. Thus, a real-time application using
traditional or lightweight cryptography primitives and protocols does not
ensure full-proof security. Post-quantum Cryptography is important for the
Internet of Things (IoT) due to its security against Quantum attacks. This
paper offers a broad literature analysis of post-quantum cryptography for IoT
networks, including the challenges and research directions to adopt in
real-time applications. The work draws focus towards post-quantum cryptosystems
that are useful for resource-constraint devices. Further, those quantum attacks
are surveyed, which may occur over traditional and lightweight cryptographic
primitives.
