Publocation (Yu-Chi Chen)

Publication (Yu-Chi Chen) === ## 📄 Journal Articles * **Value-Prioritized Query Tree Protocols in RFID Tag Identification** * *Authors:* Chih-Chung Lin and Yu-Chi Chen * *Journal:* **Computer Communications**, 2026. (to appear) * **Privacy-Preserving Outsourced Deep Neural Network Training: New Dual-Cloud Framework and Efficient Construction** * *Authors:* Chen-Fan Chang, Kuan-Chun Huang, Bo-Jia Chen, and Yu-Chi Chen* * *Journal:* **IEEE Transactions on Emerging Topics in Computing**, 2026. (to appear) * *DOI:* [10.1109/tetc.2026.3676652](https://doi.org/10.1109/tetc.2026.3676652) * **On the Construction of a Leakage-Resilient Certificate-Based Encryption with Equality Test Scheme** * *Authors:* Tung-Tso Tsai, Han-Yu Lin, Tsung-Han Yu, Yu-Chi Chen, You-Jun Ye * *Journal:* **Journal of Information Security and Applications**, vol. 99, 104422, 2026. * **Veri-SFL: Privacy-Preserving Verification of Resource Allocation and Data Trustworthiness in Sustainable Federated Learning** * *Authors:* Yu-Chi Chen*, You-Siang Liao, and Zong-Sian Lai * *Journal:* **IEEE Transactions on Sustainable Computing**, vol. 11, pp. 199-212, 2026. * **Leakage-Resilient Public Key Encryption with Equality Test Resistant to Side-channel Attacks** * *Authors:* Tung-Tso Tsai, Han-Yu Lin, Yu-Chi Chen*, and Yuan-Chin Chen * *Journal:* **Journal of Information Science and Engineering**, vol. 41, no. 1, pp. 195-216, 2025. * **Dual-Cloud Multi-Secret Sharing Architecture for Privacy Preserving Persistent Computation** * *Authors:* Yu-Chi Chen*, Jhe-Kai Yang, Hsin-Chan Yen, and Pei-Wen Lin * *Journal:* **IEEE Transactions on Information Forensics and Security**, vol. 19, pp. 7523-7535, 2024. * **A Conceptually Simple and Generic Construction of Plaintext Checkable Encryption in the Standard Model** * *Authors:* Yu-Chi Chen* * *Journal:* **Designs, Codes and Cryptography**, vol. 92, pp. 1729-1746, 2024. * **Privacy Preserving Support Vector Machine Based on Federated Learning for Distributed IoT-Enabled Data Analysis** * *Authors:* Yu-Chi Chen, Song-Yi Hsu, Xin Xie, Saru Kumari, Sachin Kumar, Joel Rodrigues, and Bander A. Alzahrani * *Journal:* **Computational Intelligence**, vol. 40, no. 2, e12636, 2024. * **Empirical Validation of Fuzzy Logic Based Predictive Load Scheduling in Mimic Home Energy Management System** * *Authors:* Nirmala Jegadeesan, G. Balasubramanian, N. Hemavathi, Yu-Chi Chen * *Journal:* **Journal of Internet Technology**, vol. 24, no. 7, pp. 1429-1436, 2023. * **JEDI: Joint and Effective Privacy Preserving Outsourced Set Intersection and Data Integration Protocols** * *Authors:* Yu-Chi Chen* and Kuan-Chun Huang * *Journal:* **IEEE Transactions on Information Forensics & Security**, vol. 18, pp. 4504-4514, 2023. * **SecDT: Privacy-Preserving Outsourced Decision Tree Classification without Polynomial Forms in Edge-Cloud Computing** * *Authors:* Yu-Chi Chen*, Che-Chia Chang, Chang-Ching Hung, Jian-Feng Lin, and Song-Yi Hsu * *Journal:* **IEEE Transactions on Signal and Information Processing over Networks**, vol. 8, pp. 1037-1048, 2022. * **A Generic Construction of Designated Verifier Signature from Standard Cryptographic Algorithms** * *Authors:* Jun-Rui Wang, Xin Xie, and Yu-Chi Chen* * *Journal:* **Journal of Information Science and Engineering**, vol. 38, no. 5, pp, 1051-1063, 2022. * **RAFI: Robust Authentication Framework for IoT-Based RFID Infrastructure** * *Authors:* Vikas Kumar, Rahul Kumar, Akber Ali Khan, Vinod Kumar, Yu-Chi Chen*, and Chin-Chieh Chang * *Journal:* **Sensors**, vol. 22, no. 9, 3110, 2022. * **Security analysis of public key encryption with filtered equality test** * *Authors:* Yu-Chi Chen* * *Journal:* **Advances in Mathematics of Communications**, vol. 17, no. 6, pp. 1358-1363, 2023. * **Cheating in (halftone-secret) visual cryptography: Analysis of blind authentication schemes** * *Authors:* Yu-Chi Chen* and Gwoboa Horng * *Journal:* **Journal of Visual Communication and Image Representation**, vol. 85, 103489, 2022. * **Quantum-resistant anonymous identity-based encryption with trable identities** * *Authors:* Zi-Yuan Liu, Yi-Fan Tseng, Raylin Tso, Masahiro Mambo, and Yu-Chi Chen * *Journal:* **IET Information Security**, vol. 16, no. 2, pp. 111-126, 2022. * **Public-key Authenticated Encryption with Keyword Search: A Generic Construction and Its Quantum-resistant Instantiation** * *Authors:* Zi-Yuan Liu, Yi-Fan Tseng, Raylin Tso, Masahiro Mambo, and Yu-Chi Chen * *Journal:* **Computer Journal**, vol. 65, no. 10, pp. 2828–2844, 2022. * **Identity-certifying Authority-aided Identity-based Searchable Encryption Framework in Cloud Systems** * *Authors:* Zi-Yuan Liu, Yi-Fan Tseng, Raylin Tso, Yu-Chi Chen, and Masahiro Mambo * *Journal:* **IEEE Systems Journal**, vol. 16, no. 3, pp. 1051-1063, 2022. * **Oblivious Access for Decentralized Database Systems: A New Asymmetric Framework from Smart Contracts** * *Authors:* Zhong-Yi Guo, Yu-Chi Chen*, and Hsiu-Ping Lin * *Journal:* **Symmetry**, vol. 14, no. 4, 680, 2022. * **Public Key Encryption with Filtered Equality Test Revisited** * *Authors:* Yu-Chi Chen*, Xin Xie, Hung-Yu Tsao, and Raylin Tso * *Journal:* **Designs, Codes and Cryptography**, vol. 89, pp. 2357–2372, 2021. * **Distributed Encrypted Image-Based Reversible Data Hiding** * *Authors:* Yu-Chi Chen* and Chih-Wei Shiu * *Journal:* **Journal of Internet Technology**, vol. 22, no. 1, pp. 101-107, 2021. * **Decentralized Data Aggregation: A New Secure Framework Based on Lightweight Cryptographic Algorithms** * *Authors:* Xin Xie and Yu-Chi Chen* * *Journal:* **Wireless Communications and Mobile Computing**, vol. 2021, Article ID 5565663, 2021. * **Plaintext Checkable Encryption with Check Delegation Revisited** * *Authors:* Yu-Chi Chen* * *Journal:* **International Journal of Ad Hoc and Ubiquitous Computing**, vol. 34, no. 2, pp. 102-110, 2020. * **Generic Construction of Dual-Server Public Key Encryption With Keyword Search on Cloud Computing** * *Authors:* Raylin Tso, Kaibin Huang, Yu-Chi Chen, Sk Md Mizanur Rahman, and Tsu-Yang Wu * *Journal:* **IEEE Access**, vol. 8, pp. 152551-152564, 2020. * **Low-Cost Online Handwritten Symbol Recognition System in Virtual Reality Environment of Head-Mounted Display** * *Authors:* Chih-Wei Shiu, Jeanne Chen, and Yu-Chi Chen* * *Journal:* **Mathematics**, vol. 8, no. 11, 1967, 2020. * **A New Reversible Data Hiding in Encrypted Image Based on Multi-Secret Sharing and Lightweight Cryptographic Algorithms** * *Authors:* Yu-Chi Chen*, Tsung-Hsuan Hung, Sung-Hsien Hsieh, and Chih-Wei Shiu * *Journal:* **IEEE Transactions on Information Forensics & Security**, vol. 14, no. 12, pp. 3332-3343, 2019. * **Witness-Based Searchable Encryption with Optimal Overhead for Cloud-Edge Computing** * *Authors:* Yu-Chi Chen*, Xin Xie, Peter Shaojui Wang, and Raylin Tso * *Journal:* **Future Generation Computer Systems**, vol. 100, pp. 715-723, 2019. * **Reversible Data Hiding in Permutation-based Encrypted Images with Strong Privacy** * *Authors:* Chih-Wei Shiu, Yu-Chi Chen, and Wien Hong * *Journal:* **KSII Transactions on Internet and Information Systems**, vol. 23, no. 2, pp. 1020-1042, 2019. * **Privacy-Preserving Outsourced Similarity Test for Access over Encrypted Data in the Cloud** * *Authors:* Dan Yang, Yu-Chi Chen*, Shaozhen Ye, and Raylin Tso * *Journal:* **IEEE Access**, vol. 6, pp. 63624-63634, 2018. * **A Secure Compressive Sensing-based Data Gathering System via Cloud Assistance** * *Authors:* Sung-Hsien Hsieh, Tsung-Hsuan Hung, Chun-Shien Lu, Yu-Chi Chen, and Soo-Chang Pei * *Journal:* **IEEE Access**, vol. 6, pp. 31840-31853, 2018. * **Somewhat semantic secure public key encryption with filtered-equality-test in the standard model and its extension to searchable encryption** * *Authors:* Kaibin Huang, Raylin Tso, and Yu-Chi Chen * *Journal:* **Journal of Computer and System Sciences**, vol. 89, pp. 400-409, 2017. * **Fully incrementing visual cryptography from a succinct non-monotonic structure** * *Authors:* Yu-Chi Chen* * *Journal:* **IEEE Transactions on Information Forensics & Security**, vol. 12, no. 5, pp. 1082-1091, 2017. * **A survey on security of certificateless signature schemes** * *Authors:* Yu-Chi Chen* and Raylin Tso * *Journal:* **IETE Technical Review**, vol. 33, no. 2, pp. 115-121, 2016. * **Encrypted image-based reversible data hiding with public key cryptography from difference expansion** * *Authors:* Chih-Wei Shiu, Yu-Chi Chen*, and Wein Hong * *Journal:* **Signal Processing: Image Communication**, vol. 39-A, pp. 226-233, 2015. * **PKE-AET: Public key encryption with authorized equality test** * *Authors:* Kaibin Huang, Raylin Tso, Yu-Chi Chen, Sk Md Mizanur Rahman, Ahmad Almogren, and Atif Alamri * *Journal:* **Computer Journal**, vol. 58, no. 10, pp. 2686-2697, 2015. * **Reversible data hiding method using complexity control and human visual system** * *Authors:* Wein Hong, Gwoboa Horng, Chih-Wei Shiu, Tung-Shou Chen, and Yu-Chi Chen * *Journal:* **Computer Journal**, vol. 58, no. 10, pp. 2583-2594, 2015. * **Certificateless aggregate signature with efficient verification** * *Authors:* Yu-Chi Chen*, Raylin Tso, Masahiro Mambo, Kaibin Huang, and Gwoboa Horng * *Journal:* **Security and Communication Networks**, vol. 8, no. 13, pp. 2232-2243, 2015. * **SPEKS: Secure server-designation public key encryption with keyword search against keyword guessing attacks** * *Authors:* Yu-Chi Chen* * *Journal:* **Computer Journal**, vol. 58, no. 4, pp. 922-933, 2015. * **Strongly secure certificateless signature: cryptanalysis and improvement of two schemes** * *Authors:* Yu-Chi Chen, Raylin Tso, Gwoboa Horng, Chun-I Fan, and Ruei-Hau Hsu * *Journal:* **Journal of Information Science and Engineering**, vol. 31 no. 1, pp. 283-296, 2015. * **Cryptanalysis of some user identification schemes for distributed computer networks** * *Authors:* Yu-Chi Chen*, Chao-Liang Liu, and Gwoboa Horng * *Journal:* **International Journal of Communication Systems**, vol. 27, no. 11, pp. 2909-2917, 2014. * **Visibility bounds for visual secret sharing based on JND theory** * *Authors:* Du-Shiau Tsai and Yu-Chi Chen * *Journal:* **Multimedia Tools and Applications**, vol. 70, no. 3, pp. 1825-1836, 2014. * **Privacy protection in on-line shopping for electronic documents** * *Authors:* Yu-Chi Chen, Gwoboa Horng, and Chang-Chin Huang * *Journal:* **Information Sciences**, vol. 277, No. 1, pp. 321-326, 2014. * **Encrypted signal-based reversible data hiding with public key cryptosystem** * *Authors:* Yu-Chi Chen*, Chih-Wei Shiu, and Gwoboa Horng * *Journal:* **Journal of Visual Communication and Image Representation**, vol. 25, no. 5, pp. 1164-1170, 2014. * **Visual secret sharing with cheating prevention revisited** * *Authors:* Yu-Chi Chen*, Du-Shiau Tsai, and Gwoboa Horng * *Journal:* **Digital Signal Processing**, vol. 23, no. 5, pp. 1496-1504, 2013. * **Strong non-repudiation based on certificateless short signatures** * *Authors:* Yu-Chi Chen, Gwoboa Horng, and Chao-Liang Liu * *Journal:* **IET Information Security**, vol. 7, no. 3, pp. 253-263, 2013. * **A new authentication based cheating prevention scheme in Naor-Shamir's visual cryptography** * *Authors:* Yu-Chi Chen, Du-Shiau Tsai, and Gwoboa Horng * *Journal:* **Journal of Visual Communication and Image Representation**, vol. 23, no. 8, pp. 1225-1233, 2012. * **Comment on “Cheating prevention in visual cryptography”** * *Authors:* Yu-Chi Chen, Gwoboa Horng, and Du-Shiau Tsai * *Journal:* **IEEE Transactions on Image Processing**, vol. 21, no. 7, pp. 3319-3323, 2012. * **On the security of a privacy preserved two-party equality testing protocol** * *Authors:* Raylin Tso*, Yu-Chi Chen, and Kaibin Huang * *Journal:* **Journal of Communications and Information Sciences**, vol. 3, no. 3, pp. 155-161, 2013. * **Security analysis of Choi et al.'s certificateless short signature scheme** * *Authors:* Yu-Chi Chen, Raylin Tso*, and Gwoboa Horng * *Journal:* **Journal of Intelligent Information Hiding and Multimedia Signal Processing**, vol. 4, no. 3, pp. 146-153, 2013. * **An efficient certificateless aggregate signature scheme** * *Authors:* Yu-Chi Chen, Gwoboa Horng, Chao-Liang Liu*, Yuan-Yu Tsai, and Chi-Shiang Chan * *Journal:* **Journal of Electronic Science and Technology**, vol. 10, no. 3, pp. 209-214, 2012. * **Share authentication based cheating prevention in Naor-Shamir’s visual cryptography** * *Authors:* Yu-Chi Chen*, Gwoboa Horng, and Du-Shiau Tsai * *Journal:* **Journal of Computers**, vol. 22, no. 1, pp. 57-65, 2011. * **A provably secure certificateless proxy signature scheme** * *Authors:* Yu-Chi Chen, Chao-Liang Liu*, Gwoboa Horng, and Kuo-Chang Chen * *Journal:* **International Journal of Innovative Computing, Information and Control**, vol. 7, no. 9, pp. 5557-5569, 2011. --- ## 👥 International Conference Papers * **Privacy-Preserving Verification of Secure Aggregation for Hierarchical Peer-to-Peer Federated Learning** * *Authors:* You-Siang Liao, Chen-Fan Chang, Te-Chuan Chiu, and Yu-Chi Chen * *Conference:* *IEEE International Conference on Communications (ICC)*, 2026. * **An Oblivious SROS2 Framework for Securing Publish-Subscribe Communication** * *Authors:* Yu-Cheng Liang, Yi-Ru Chen, Yu-Chi Chen, Michael Lin, Kuo-Chun Lin, and Wei-Bin Lee * *Conference:* *International Conference on Cryptography, Security and Privacy (CSP)*, 2026. * **Circuit Normalization Bottlenecks in Trivial Zero-Knowledge Decision Tree Evaluation** * *Authors:* Kai-Che Shih, Tzu-Yu Fan Chiang, Wen-Chi Lai, Tzu-Chen Huang, Chen-Hao Kao, Yu-Chi Chen, and Wei-Chung Teng * *Conference:* *International Conference on Mobile Internet Security (MobiSec)*, 2025. * **Privacy-Enhancing LLM-Based Synthetic Dataset Generation by LoRA Fine-Tuning and Prompting** * *Authors:* Sheng-Chieh Hung, Chen-Fan Chang, Yu-Chi Chen, Yu-Ming Chang, Yu-Ta Lin, Michael Lin, and Wei-Bin Lee * *Conference:* *IEEE Conference on Dependable and Secure Computing (DSC)*, 2025. * **Proof of Liabilities from Sum-Check Protocol and Polynomial Approximation** * *Authors:* Huan-Chi Chang, Yu-Chi Chen, Kai-Che Shih, Chih-Chieh Chang, and Raylin Tso * *Conference:* *Blockchain and Internet of Things Conference (BIOTC)*, 2025. * **Blockchain Driven Security: Protecting Data and Ensuring Trustworthiness in Federated Learning** * *Authors:* Yu-Hwa Liu, Jhe-Yu Lin, Hung-Ming Lin, Yu-Chi Chen, and Chih-Chieh Chang * *Conference:* *Blockchain and Internet of Things Conference (BIOTC)*, 2025. * **Constructing a Blockchain-based Framework for Enhancing the Reliability of Election Polls** * *Authors:* Jhe-Yu Lin, Yu-Hwa Liu, Yu-Chi Chen, and Chih-Chieh Chang * *Conference:* *Blockchain and Internet of Things Conference (BIOTC)*, 2024. * **A File Verification Scheme Based on Verkle Trees** * *Authors:* Kai-Wei Lin and Yu-Chi Chen * *Conference:* *IEEE International Conference on Consumer Electronics – Taiwan (ICCE-Taiwan)*, 2023. * **Distributed Privacy-preserving Support Vector Machine Training Scheme on Vertically Partitioned Data** * *Authors:* Chih-Jou Wu, Chang-Ching Hung, Nai-Chi Chen, Kuo-Yang Chang, and Yu-Chi Chen * *Conference:* *International Conference on Computer and Communications Management (ICCCM)*, 2023. * **A Secure and IoT-Enabled Data Sharing System Based on IPFS and IOTA Blockchain** * *Authors:* Tse-Yang Huang, Yu-Chi Chen, Tsung-Chen Hsieh, Huan-Chi Chang, and Chih-Chieh Chang * *Conference:* *Blockchain and Internet of Things Conference (BIOTC)*, 2023. * **Efficient Privacy Preserving Nearest Neighboring Classification from Tree Structures and Secret Sharing** * *Authors:* Jhe-Kai Yang, Kuan-Chun Huang, Cheng-Yang Chung, Yu-Chi Chen, and Ting-Wei Wu * *Conference:* *IEEE International Conference on Communications (ICC)*, 2022. * **Public-key Authenticated Encryption with Keyword Search: Cryptanalysis, Enhanced Security, and Quantum-resistant Instantiation** * *Authors:* Zi-Yuan Liu, Yi-Fan Tseng, Raylin Tso, Masahiro Mambo, and Yu-Chi Chen * *Conference:* *ACM ASIA Conference on Computer and Communications Security (AsiaCCS)*, 2022. * **Designated Verifier Signature Transformation: A New Framework for One-Time Delegating Verifiability** * *Authors:* Jian-Feng Lin, Jun-Rui Wang, Che-Chia Chang, and Yu-Chi Chen * *Conference:* *IEEE Conference on Dependable and Secure Computing*, 2021, Jan. * **Decentralized Data Aggregation: A New Secure Framework Based on Lightweight Cryptographic Algorithms** * *Authors:* Xin Xie and Yu-Chi Chen * *Conference:* *IEEE Conference on Dependable and Secure Computing*, 2021, Jan. * **Privacy Preserving Outsourced Data Integration from Inner Product Encryption** * *Authors:* Kuan-Chun Huang and Yu-Chi Chen * *Conference:* *IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)*, 2021. * **Privacy-Preserving Delegation of Decision Tree Classification** * *Authors:* Che-Chia Chang, Jian-Feng Lin, Song-Yi Hsu, and Yu-Chi Chen * *Conference:* *IEEE International Conference on Consumer Electronics – Taiwan*, 2020, Sep. * **SCDP: Smart Contract-based Decentralized Privacy System for Securing Data Ownership Management** * *Authors:* Yunmin He, Yu-Chi Chen, Zhong-Yi Guo, Raylin Tso, and Shaozhen Ye * *Conference:* *IEEE Global Conference on Consumer Electronics (GCCE 2019)*, Oct. 2019. (Osaka, Japan) * **Lottery DApp from Multi-Randomness Extraction** * *Authors:* Yu-Chi Chen, Song-Yi Hsu, Ting-Wei Chang, and Ting-Wei Wu * *Conference:* *IEEE International Conference on Blockchain and Cryptocurrency (ICBC 2019)*, May 2019. (Seoul, Korea) * **Plaintext Checkable Encryption with Check Delegation: New Models and Simple Constructions** * *Authors:* Yu-Chi Chen * *Conference:* *International Symposium on Parallel Architectures, Algorithms and Programming (PAAP 2018)*, Dec. 2018. (Taipei, Taiwan) * **Witness-Based Searchable Encryption with Aggregative Trapdoor** * *Authors:* Xin Xie, Yu-Chi Chen, Jun-Rui Wang, and Yingjie Wu * *Conference:* *International Conference on Security with Intelligent Computing and Big-data Services 2018*, Dec. 2018. (Guilin, China) * **Oblivious Transfer Protocols Based on Commutative Encryption** * *Authors:* Jen-Chieh Hsu, Raylin Tso, Yu-Chi Chen, and Mu-En Wu * *Conference:* *IFIP International Conference on New Technologies, Mobility and Security 2018*, Mar. 2018. (Paris, France) * **One-Time-Commutative Public Key Encryption** * *Authors:* Kaibin Huang, Raylin Tso, and Yu-Chi Chen * *Conference:* *IEEE Technically Sponsored Computing Conference 2017*, July 2017. (London, United Kingdom) * **Delegating RAM Computations with Adaptive Soundness and Privacy** * *Authors:* Prabhanjan Ananth, Yu-Chi Chen, Kai-Min Chung, Huijia Lin, and Wei-Kai Lin * *Conference:* *IACR Theory of Cryptography Conference (TCC 2016-B)*, Nov. 2016. (Beijing, China) * *Note:* Granted by Academia Sinica Postdoctoral Fellowship * **Cryptography for Parallel RAM via Indistinguishability Obfuscation** * *Authors:* Yu-Chi Chen, Sherman S. M. Chow, Kai-Min Chung, Russell W. F. Lai, Wei-Kai Lin and Hong-Sheng Zhou * *Conference:* *ACM Conference on Innovations in Theoretical Computer Science (ITCS 2016)*, Jan. 2016. (Cambridge, MA, USA) * *Note:* Granted by Academia Sinica Postdoctoral Fellowship * **Semantic secure public key encryption with filtered equality test** * *Authors:* Kaibin Huang, Yu-Chi Chen, and Raylin Tso * *Conference:* *International Conference on Security and Cryptography (SECRYPT 2015)*, July 2015. (Colmar, Alsace, France) * **Efficient public key encryption with user-friendly keywords search for searchable cloud storage** * *Authors:* Kuo-Chang Chen, Yu-Chi Chen, Gwoboa Horng, and Raylin Tso * *Conference:* *International Computer Symposium (ICS)*, Dec. 2014. (Taichung, Taiwan) * **An improved visual cryptography with cheating prevention** * *Authors:* Yu-Chi Chen, Kunhan Lu, Raylin Tso, and Mu-En Wu * *Conference:* *The 13th International Workshop on Digital-Forensics and Watermarking (IWDW 2014)*, Oct. 2014. (Taipei, Taiwan) * **A new public key encryption with equality test** * *Authors:* Kaibin Huang, Raylin Tso, Yu-Chi Chen, Wangyu Lee, and Hung-Min Sun * *Conference:* *The 8th International Conference on Network and System Security (NSS 2014)*, Oct. 2014. (Xian, China) * **A privacy-preserving human tracking scheme in centralized cloud based camera networks** * *Authors:* Yu-Chi Chen, Chun-Te Chu, Jenq-Neng Hwang and Jang-Hee Yoo * *Conference:* *IEEE International Conference of Communications (ICC 2014)*, June 2014. (Sydney, Australia) * *Note:* Granted by Graduate Student Study Abroad Program, Taiwan National Science Council, No: NSC102-2917-I-005-007 * **Cryptanalysis of a provably secure certificateless short signature scheme** * *Authors:* Yu-Chi Chen, Raylin Tso and Gwoboa Horng * *Conference:* *International Computer Symposium (ICS)*, 2012. (Hualien, Taiwan) * **An efficient and secure RFID protocol for provide ownership transfer** * *Authors:* Hsin-Ruay Tsai, Gwoboa Horng and Yu-Chi Chen * *Conference:* *The 6th International Conference on Computer Sciences and Convergence Information Technology (ICCIT 2011)*, 2011. (Seoul, Korea) * **A server-aided Paillier’s signature generation scheme** * *Authors:* Kuo-Chang Chen, Yu-Chi Chen and Gwoboa Horng * *Conference:* *The 5th International Conference on New Trends in Information and Service Science (NISS 2011)*, 2011. (Macao, China) * **Timestamped Conjunctive keyword-searchable public key encryption** * *Authors:* Yu-Chi Chen and Gwoboa Horng * *Conference:* *The 4th International Conference on Innovative Computing, Information and Control (ICICIC 2009)*, 2009. (Kaohsiung, Taiwan) * **Privacy protection in on-line shopping for electronic documents** * *Authors:* Yu-Chi Chen, Gwoboa Horng, and Chang-Chin Huang * *Conference:* *Information Assurance and Security (IAS09)*, 2009. (Xian, China)