-- Applied Cryptography and system security. -- Identity-Based Key Verifiable Inner Product Functional Encryption Scheme. -- DRSA: Debug Register-based Self-relocating Attack against software-based remote authentication. -- Fuzz Testing of UAV Configurations Based on Evolutionary Algorithm. -- A suvey of algorithms for addressing the Shortest Vector Problem (SVP). -- Blockchain and applications. -- PSWS: Private Support-Weighted Sum Protocol for Privacy-Preserving Blockchain-Based Voting With Ballot Secrecy. -- Cross-chain trusted information match scheme with privacy-perserving and auditability. -- Verifiable Attribute-Based Proxy Re-Encryption with Non-repudiation based on Block-Chain. -- Blockchain-based Hierarchical Access Control with Efficient Revocation in mHealth System.

This book constitutes the refereed proceedings of the Third International Conference on Blockchain Technology and Emerging Applications, BlockTEA 2023, held in December 2-3, 2023 in Wuhan, China. The 10 regular papers presented were carefully reviewed and selected from 41 submissions. Blockchain technology has been emerging as a potential technology to be applied in various domains, including finance, computer science, electronic engineering, agriculture, healthcare and more. The blockchain-based applications are able to aid the current systems and networks by leveraging the benefits provided by blockchain technology, such as a decentralized, immutable, and cryptographically secured ledger.