张乐友，教授，博导。研究方向为云计算与物联网安全、公钥密码、网络安全。从2005年至今，在IEEE trans. IND INFORM, IEEE IOTJ, IEEE trans. SERV COMPUT, IEEE trans. CLOUD COMPUT, IEEE Sys. J, FGCS, INFOCOM等期刊会议已发表论文100多篇，授权专利多项。主持参与国家自然科学基金6项，国家自然科学基金重点项目子项目1项，陕西省自然基金6项、陕西省重点研发项目2项, "十三五"国家密码发展基金1项，国防预研基金1项。获教育厅奖1项。全国密码算法竞赛优秀指导教师。

Leyou Zhang, Prof., Ph. D. supervisor, focuses on cloud security, IoT security, Public key cryptography and Lattice-based cryptography and applications. He published more than 100 journal papers and conference paper including IEEE trans. on IND INFORM, IEEE trans on CLOUD COMPUT, IEEE IOTJ, IEEE trans. SERV COMPUT, IEEE Sys. J, FGCS, INFOCOM. He chaired or participated 6 projects supported by National Natural Science Foundation, 6 projects supported by Shaanxi Natural Science Foundation, Key Fund of the National Natural Science Foundation of China, 1 project of 13th Five-Year Plan National Cryptography Development Fund. He earned 1 Shaanxi Education Department Award.