• 张乐友，男，教授，博士研究生导师，中国密码学会高级会员，中国数学学会会员，中国数学教育委员会会员，2009年毕业于西安电子科技大学，导师胡予濮。研究工作主要面向密码设计理论、隐私计算、公钥密码学，研究内容涉及公钥密码的设计与分析，隐私保护，格基密码的设计与分析，广播加密，数字签名等。在密码学领域先后主持参与了多项基金：国家自然基金4项，其中主持2项，主持面上项目子项目1项、国家自然科学基金重点基金子项目1项；陕西省自然科学基金2项，十三五中国密码发展基金1项，陕西省重点研发项目2项，在IEEE TSC/TII/TCC/TVT, IEEE IOTJ, Informaiton Fusion, FGCS, IET IF发表论文论文120余篇。申请专利多项，获陕西省高校科学技术奖一等奖1项，二等奖1项。2014年01月至2014年12月在澳大利亚University of Wollongong 做访问学者，导师Yi Mu. 为IEEE (TIFS, TCC, TDSC, TC, TITS, TSC, TMC, TNSW, TVT,TBD, TCCN, TII,SAC) Information Science, JCST, IET Communications, IET information security, Journal of Networks and Computer Applications ,《计算机学报》《电子学报(中、英文版)》《密码学报》《中国科学信息版（中英）》等国内外50余期刊审稿人，多个省份重点项目、给类奖评审人。

• Leyou Zhang(PHD supervisor), received the Ph.D. degree from the School of Mathematics and Statistics,  Xidian University in 2009. From 2015, he served as a Professor of application mathematics and information security at the Xidian University in China. From 2013 to 2014, he worked as a visiting scholar in the University of Wollongong, Australia. Professor Zhang has served as a reviewer for more than 50 International Journal and references since 2005, such as IEEE (TIFS, TCC, TDSC, TC, TITS, TSC, TMC, TNSW, TVT,TBD, TCCN, TII,) Information Science, JCST, IET Communications, IET information security, Journal of Networks and Computer Applications and CS 2015/2016, Globecom 2016 /17/18. Professor Zhang’s current research fields include public key cryptography, blockchain and network security, etc. He has published more than 120 papers in some International Journal and references, e.g., IEEE IOTJ , IEEE Sys. J, IEEE TSC, IEEE TVT, IEEE TCC, IEEE TII. Additionally, he had Chaired and participated in a number of National Natural Science Foundation, Natural Science Foundation of Shannxi province, International S&T Cooperation Program of Shaanxi Province, the National Cryptography Development Fund.

• 工作经历：

• 1  2015年晋升为教授； 

• 2  2009年6月晋升副教授；
  

• 3  2013.12-2014.12，University of Wollongong, Research Fellow

• 项目经历：

• 1多源异构数据适应性隐私保护的数据安全共享与交换，国家自然基金重点基金子课题，2020.01-2023.12

• 2 云存储下数据隐私保护技术研究，陕西省重点研发项目， 2019.01-2021.01. 主持。

• 3 抗泄漏攻击属性基加密研究，十三五国家密码发展基金，2018.9-2021.9. 主持

• 4 云环境下抗连续型泄露攻击公钥密码体制研究, 陕西省项目, 2016-2018. 主持

• 5 云端中支持细粒度访问控制策略的属性基加密, 国家自然科学基金, 2015-2018.12.主持

• 6 标准模型下可证明安全的新型分级身份基加密研究, 国家自然科学基金, 2012.1-2014.12.主持

• 7 公钥广播加密的设计与分析, 国家自然科学基金, （子项目）主持

• 8 基于新型数学困难问题的广播加密的设计, 中央高校基础研究基金，主持

• 9 新型可证明安全公钥广播加密的设计与分析, 陕西省项目, 2012-2014. 主持

• 10 后量子背包密码的设计与分析, 国家自然科学基金, 已完成，参与

• 11 快速公钥的设计与分析, 国家自然科学基金, 已完成，参与

• 10 分组密码新型分析技术研究, 国家自然科学基金, 已完成，参与

• 11 国家重点基础研究发展计划项目-973项目, 国家科技支撑计划, 参与

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• 近几年发表部分论文(来源于DBLP)：

  2024

• Leyou Zhang, Xinmin Li, Qing Wu, Fatemeh Rezaeibagha:

  Blockchain-Aided Anonymous Traceable and Revocable Access Control Scheme With Dynamic Policy Updating for the Cloud IoT. IEEE Internet Things J. 11(1): 526-542 (2024)

• Leyou Zhang, Shuwei Xie, Qing Wu, Fatemeh Rezaeibagha:

  Enhanced Secure Attribute-Based Dynamic Data Sharing Scheme With Efficient Access Policy Hiding and Policy Updating for IoMT. IEEE Internet Things J. 11(16): 27435-27447 (2024)

•  Shuwei Xie, Leyou Zhang, Qing Wu, Fatemeh Rezaeibagha:

  Flexibly expressive and revocable multi-authority KP-ABE scheme from RLWE for Internet of Medical Things. J. Syst. Archit. 152: 103179 (2024)

• Qing Wu, Guoqiang Meng, Leyou Zhang, Yue Lei:

  An anonymous and large-universe data-sharing scheme with traceability for medical cloud storage. J. Syst. Archit. 153: 103210 (2024)

• Chuchu Zhao, Leyou Zhang, Qing Wu, Fatemeh Rezaeibagha:

  Publicly Accountable Data-Sharing Scheme Supporting Privacy Protection for Fog-Enabled VANETs. IEEE Trans. Veh. Technol. 73(6): 8487-8502 (2024)

•   Yi Chuai, Leyou Zhang, Shuwei Xie, Runze Tian, Zhuang Shan:

  Hierarchical Identity-Based Encryption Based on SM9. DSPP (1) 2024: 106-118

• Zhuang Shan, Leyou Zhang, Qing Wu:

  Heuristic Ideal Obfuscation Scheme based on LWE Problem, its Variants and Quantum Oracle. IACR Cryptol. ePrint Arch. 2024: 392 (2024)

• Zhuang Shan, Leyou Zhang, Qing Wu, Qiqi Lai:

  Analysis, modify and apply in IIOT form light-weight PSI in CM20. IACR Cryptol. ePrint Arch. 2024: 969 (2024)

• Zhuang Shan, Leyou Zhang, Qing Wu, Qiqi Lai:

  Inner Product Ring LWE Problem, Reduction, New Trapdoor Algorithm for Inner Product Ring LWE Problem and Ring SIS Problem. IACR Cryptol. ePrint Arch. 2024: 1179 (2024)

• Zhuang Shan, Leyou Zhang, Qing Wu, Qiqi Lai, Fuchun Guo:

  Oblivious Pseudo Random Function base on Ideal Lattice, Application in PSI and PIR. IACR Cryptol. ePrint Arch. 2024: 1349 (2024)

  2023

• Leyou Zhang, Guang Yang, Chao Song, Qing Wu:

  Accountable multi-authority attribute-based data access control in smart grids. J. King Saud Univ. Comput. Inf. Sci. 35(7): 101597 (2023)

• Xuanyang Hou, Leyou Zhang, Qing Wu, Fatemeh Rezaeibagha:

  Collusion-resistant dynamic privacy-preserving attribute-access control scheme based on blockchain. J. King Saud Univ. Comput. Inf. Sci. 35(8): 101658 (2023)

• Qing Wu, Guoqiang Meng, Leyou Zhang, Fatemeh Rezaeibagha:

  Collusion resistant multi-authority access control scheme with privacy protection for personal health records. J. King Saud Univ. Comput. Inf. Sci. 35(8): 101677 (2023)

• Ruonan Ma, Leyou Zhang:

  SPMAC: Secure and privacy-preserving multi-authority access control for fog-enabled IoT cloud storage. J. Syst. Archit. 142: 102951 (2023)

• Tianshuai Zhang, Leyou Zhang, Qing Wu, Yi Mu, Fatemeh Rezaeibagha:

  Redactable Blockchain-Enabled Hierarchical Access Control Framework for Data Sharing in Electronic Medical Records. IEEE Syst. J. 17(2): 1962-1973 (2023)

• Fatemeh Rezaeibagha, Yi Mu, Ke Huang, Lanxiang Chen, Leyou Zhang:

  Toward Secure Data Computation and Outsource for Multi-User Cloud-Based IoT. IEEE Trans. Cloud Comput. 11(1): 217-228 (2023)

• Ruonan Ma, Leyou Zhang, Qing Wu, Yi Mu, Fatemeh Rezaeibagha:

  BE-TRDSS: Blockchain-Enabled Secure and Efficient Traceable-Revocable Data-Sharing Scheme in Industrial Internet of Things. IEEE Trans. Ind. Informatics 19(11): 10821-10830 (2023)

• Fatemeh Rezaeibagha, Yi Mu, Ke Huang, Lanxiang Chen, Leyou Zhang:

  Authenticable Additive Homomorphic Scheme and its Application for MEC-Based IoT. IEEE Trans. Serv. Comput. 16(3): 1664-1672 (2023)

• Zhuang Shan, Leyou Zhang, Qing Wu, Qiqi Lai:

  Algebraic isomorphic spaces of ideal lattices, reduction of Ring-SIS problem, and new reduction of Ring-LWE problem. IACR Cryptol. ePrint Arch. 2023: 1412 (2023)

• 2022

• Jian Su, Leyou Zhang, Yi Mu:

  BA-RMKABSE: Blockchain-aided Ranked Multi-keyword Attribute-based Searchable Encryption with Hiding Policy for Smart Health System. Future Gener. Comput. Syst. 132: 299-309 (2022)

• Leyou Zhang, Tianshuai Zhang, Qing Wu, Yi Mu, Fatemeh Rezaeibagha:

  Secure Decentralized Attribute-Based Sharing of Personal Health Records With Blockchain. IEEE Internet Things J. 9(14): 12482-12496 (2022)

• Leyou Zhang, Ye Zhang, Qing Wu, Yi Mu, Fatemeh Rezaeibagha:

  A Secure and Efficient Decentralized Access Control Scheme Based on Blockchain for Vehicular Social Networks. IEEE Internet Things J. 9(18): 17938-17952 (2022)

• Ye Zhang, Leyou Zhang, Qing Wu, Yi Mu:

  Blockchain-enabled efficient distributed attribute-based access control framework with privacy-preserving in IoV. J. King Saud Univ. Comput. Inf. Sci. 34(10 Part B): 9216-9227 (2022)

• Qing Wu, Taotao Lai, Leyou Zhang, Yi Mu, Fatemeh Rezaeibagha:

  Blockchain-enabled multi-authorization and multi-cloud attribute-based keyword search over encrypted data in the cloud. J. Syst. Archit. 129: 102569 (2022)

• Leyou Zhang, Chuchu Zhao, Qing Wu, Yi Mu, Fatemeh Rezaeibagha:

  A traceable and revocable multi-authority access control scheme with privacy preserving for mHealth. J. Syst. Archit. 130: 102654 (2022)

• Leyou Zhang, Xuehuang Gao, Li Kang, Pengfei Liang, Yi Mu:

  Distributed Ciphertext-Policy Attribute-Based Encryption With Enhanced Collusion Resilience and Privacy Preservation. IEEE Syst. J. 16(1): 735-746 (2022)

• Qing Wu, Liangjun Li, Leyou Zhang, Yi Mu, Fatemeh Rezaeibagha:

  Secure and Efficient General Circuits Attribute-Based Access Control in Cloud Computing. IEEE Syst. J. 16(4): 5533-5543 (2022)

• Leyou Zhang, Wenting You, Yi Mu:

  Secure Outsourced Attribute-Based Sharing Framework for Lightweight Devices in Smart Health Systems. IEEE Trans. Serv. Comput. 15(5): 3019-3030 (2022)

  2020-2021

• Leyou Zhang,Yadi Ye, Yi Mu, Multi-authority Access Control with Anonymous Authentication for Personal Health Record, IEEE Internet of Things Journal, 8(1), 2021, pp. 156-167.

• Leyou Zhang, Jun Wang, Yi Mu, Privacy-preserving Flexible Access Control to Encrypted Data in Internet of Things,IEEE Internet of Things Journal, 2021, DOI: 10.1109/JIOT.2021.3071553.

• Leyou Zhang, Wenting You, Yi Mu,Secure Outsourced Attribute-based Sharing Framework for Lightweight Devices in Smart Health Systems, IEEE transactions on Services Computing, 2021, DOI: 10.1109/TSC.2021.3073740.

• Fatemeh Rezaeibagha, Yi Mu, Ke Huang, Leyou Zhang,Xinyi Huang, Secure and Privacy-Preserved Data Collection for IoT Wireless Sensors, IEEE Internet of Things Journal, 2021, DOI: 10.1109/JIOT.2021.3082150.

• Gongcheng Hu, Leyou Zhang, Yi Mu, An Expressive “test-decrypt-verify” Attribute-Based Encryption Scheme with Hidden Policy for Smart Medical Cloud. IEEE systems Journal, 15(1), 2020, pp. 365-376

• Leyou Zhang, Yi Lei Cui, Yi Mu,Improving Security and Privacy Attribute Based Data Sharing in Cloud Computing, IEEE systems Journal, 14(1), 2020, pp. 387-397, doi: 10.1109/JSYST.2019.2911391.

• Leyou Zhang, Xuehuang Gao, Li Kang, Pengfei Liang, Yi Mu,Improving Security and Privacy Attribute Based Data Sharing in Cloud Computing, IEEE Systems Journal, doi: 10.1109/JSYST.2021.3072793. 2021.

  2019

• Leyou Zhang, Gongcheng Hu, Yi Mu, Fatemeh Rezaeibagha:  Hidden Ciphertext Policy Attribute-Based Encryption With Fast Decryption for Personal Health Record System. IEEE Access 7: 33202-33213 (2019)

• Leyou Zhang, Yujie Shang:  Leakage-resilient Attribute-based Encryption with CCA2 Security. Int. J. Netw. Secur. 21(5): 819-827 (2019)

•  Pengfei Liang, Leyou Zhang, Li Kang, Juan Ren  Privacy-preserving decentralized ABE for secure sharing of personal health records in cloud storage. J. Inf. Secur. Appl. 47: 258-266 (2019)

•  Hongjian Yin, Leyou Zhang, Yilei Cui:Improving Security in Ciphertext-Policy Attribute-Based Encryption with Hidden Access Policy and Testing. KSII Trans. Internet Inf. Syst. 13(5): 2768-2780                  (2019)

  2018

•  Leyou Zhang, Pengfei Liang, Yi Mu:  Improving Privacy-Preserving and Security for Decentralized Key-Policy Attributed-Based Encryption. IEEE Access 6: 12736-12745 (2018)

•  Leyou Zhang, Zhuanning Wang, Yi Mu, Yupu Hu:Fully secure hierarchical inner product encryption for privacy preserving keyword searching in cloud. IJHPCN 11(1): 45-54 (2018)

• Leyou Zhang, Hongjian Yin: Recipient Anonymous Ciphertext-Policy Attribute-based Broadcast Encryption. I. J. Network Security 20(1): 168-176 (2018)

   2017

•  Leyou Zhang, Jingxia Zhang, Yi Mu: Novel Leakage-Resilient Attribute-Based Encryption from Hash Proof System. Comput. J. 60(4): 541-554 (2017)

• Qing Wu, Leyou Zhang, Jingxia Zhang: Fuzzy Biometric-Based Encryption for Encrypted Data in the Cloud. IEICE Transactions 100-A(5): 1257-1261 (2017)

•  Leyou Zhang, Zongchen Sun, Yi Mu, Yupu Hu: Revocable hierarchical identity-based encryption over lattice for pay-TV systems. IJES 9(4): 379-398 (2017)

•  Jing Wei, Leyou Zhang:Ciphertext policy attribute-based encryption with hierarchical domain authorities and users in cloud. IJHPCN 10(6): 524-533 (2017)

• Jingxia Zhang, Leyou Zhang:  Anonymous CP-ABE against Side-channel Attacks in Cloud Computing. J. Inf. Sci. Eng. 33(3): 789-805 (2017)

•  Leyou Zhang, Qing Wu:Adaptively Secure Hierarchical Identity-Based Encryption over Lattice. NSS 2017: 46-58

• Hongjian Yin, Leyou Zhang: Security Analysis and Improvement of An Anonymous Attribute-Based Proxy Re-encryption. SpaCCS 2017: 344-352

2016

•  Leyou Zhang, Yi Mu, Qing Wu:Compact Anonymous Hierarchical Identity-Based Encryption with Constant Size Private Keys. Comput. J. 59(4): 452-461 (2016)

•  Leyou Zhang, Qing Wu, Yi Mu, Jingxia Zhang:Privacy-Preserving and Secure Sharing of PHR in the Cloud. J. Medical Systems 40(12): 267:1-267:13 (2016)