This book constitutes the refereed post-conference proceedings of the Second International Conference on Applied Cryptography in Computer and Communications, AC3 2022, held May 14-15, 2022 and due to COVID-19 pandemic virtually.The 12 revised full papers and 2 short papers were carefully reviewed and selected from 38 submissions.

Quantum-Safe Cryptographic Solution.- DU-QS22: A Dataset for Analyzing QC-MDPC-based Quantum-Safe Cryptosystems.- Quantum-Safe Signing of Notification Messages in Intelligent Transport Systems.- Applied Cryptography for IoT.- WB-GWS: An IoT-Oriented Lightweight Gateway System Based on White-Box Cryptography.- Symmetric Key Based Scheme for Verification Token Generation in Internet of Things Communication Environment.- Resource Consumption Evaluation of C++ Cryptographic Libraries on Resource-Constrained Devices.- Authentication Protocol.- A Secure Lightweight RFID Mutual Authentication Protocol without Explicit Challenge-Response Pairs.- bisAUTH : A blockchain-inspired secure authentication protocol for IoT nodes.- Real-World Applied Cryptography.- X-FTPC: A Fine-grained Trust Propagation Control Scheme for Cross-Certification Utilizing Certificate Transparency.- The Block-based Mobile PDE Systems Are Not Secure - Experimental Attacks.- Black-box Testing ofCryptographic Algorithms Based on Data Characteristics.-  Network Attack and Defense.- IoT Devices Classification base on Network Behavior Analysis.- Semi-supervised False Data Injection Attacks Detection in Smart Grid.- Security Application.- A Novel Logistics Scheme Based on Zero-trust Model.- ALFLAT: Chinese NER Using ALBERT,Flat-Lattice Transformer,Word Segmentation and Entity Dictionary.