Towards A Decentralized IBE Scheme For Securing The IoTs: Blockchain-Based Solution Using PUFs (A31c). Dr. Hilal is a public speaker, senior researcher at an international financial institution (IDBG), security technologist and cryptography expert, Cryptoc.com. Dr. Hilal also served as a senior cyber security consultant at the National Commercial Bank. His expertise lies in assessing, designing and implementing cryptographic primitives and schemes. Two patents with USPTO in securing ECC cryptosystem against simple and differential power analysis attacks on resource constrained devices, and several dozen articles on security and cryptography published in international journals and conferences. His research interests include cryptography, blockchain technology, securing the Internet of Things (IoTs) and the cloud-based computation, fintech and banking/financial security, security attacks and countermeasures on crypto-systems.