This book constitutes the refereed proceedings of the 5th International Conference on Security and Privacy in New Computing Environments, SPNCE 2022, held in Xi’an, china, in December 30-31, 2022. The 12 full papers were selected from 38 submissions and are grouped in thematical parts as: authentication and key agreement;

Authentication and key agreement.- User Authentication Using Body Vibration Characteristics.- An Improved Authenticated Key Agreement Protocol for IoT and Cloud Server.- Efficient two-party authentication key agreement protocol using reconciliation mechanism from lattice.- Anonymous and Practical Multi-Factor Authentication for Mobile Devices Using Two-Server Architecture.- Data security.- Cross-chain Data Auditing for Medical IoT Data.- Outsourced Privacy-Preserving SVM Classifier Model over Encrypted Data in IoT.- A Scheme of Anti Gradient Leakage of Federated Learning Based on Blockchain.- Analysis of a New Improved AES S-box Structure Rong.- Network security.- Social Internet of Tings trust management based on implicit social relationship.- Romeo: SGX-based Software Anti-Piracy Framework.- P-TECS: An Energy Balance Algorithm for Opportunistic Networks Integrating Multiple Node Attributes.- Network Situation Awareness Model based on Incomplete Information Game.