A lightweight pairing-free certificateless signcryption scheme with designated-verifier privacy for IoT in the standard model

This research paper proposes a new cryptographic method for securing communication in IoT (Internet of Things) devices that is lightweight and preserves privacy. The scheme uses certificateless signcryption (a technique that combines digital signatures for authentication with encryption for confidentiality, without requiring traditional certificates) and designated-verifier privacy (meaning only a chosen recipient can verify that a message is authentic), designed to work efficiently on resource-constrained IoT devices.