Welcome !


I believe I can fly

I believe I can touch the sky

Life is like a blank paper. I am doodling, doodling...

The background photo was taken at Niagara Falls(Canada side) by Runhua.
(ISO 100 53mm f/11 1/320)

More about Runhua

More about Runhua


Runhua Xu is a research staff member in the group of AI Security & Privacy Solutions at IBM Research - Almaden works under the AI Platforms organization, and is based in San Jose, CA. He holds a Ph.D. degree in Information Security from School of Computing and Information, University of Pittsburgh. His advisor is Prof. James B.D. Joshi. Prior to that, Runhua received his M.S. degree in Computer Science supervised by Prof. Bo Lang from Beihang University, and his B.E. in Software Engineering from Northwestern Polytechnical University.

Areas of Specialization

Runhua's research interests cover a range of areas: privacy-preserving machine learning, secure computing, access control, applied cryptography, blockchain, security and privacy issues in cloud/edge computing. More specifically, his current research focuses on approaches to achieve privacy-preserving collaborative machine learning models by secure multi-party computing, etc., and efficient and generic approaches to achieve machine learning models over encrypted data. He also works on various issues such as public ledger techniques such as blockchain and smart contracts to build trustworthy, collaborative, and transparent third-party authority infrastructure for advanced cryptosystems.

Life is like a blank paper. I am doodling, doodling...

Research Experiences & Projects


Secure Computing in Federated Learning Models

federated learning, secure computing, computing over encrypted data

Secure and Collaborative Machine Learning Models

machine learning, SMC, access control, secret sharing, approximate computing, computing over ciphertext

Collaborative and Transparent TPA Infrastructure for Advanced Crypto Systems

third-party authority, infrastructure, public ledger, advanced cryptosystem, trustworthy and transparency

Cryptography-based Access Control

cryptography, attribute-based encryption, secure deduplication, attribute-based access control

Privacy-preserving Query Processing in Edge Computing Environment

query optimization, data privacy, latency awareness, edge computing, database

Data-centric Self-contained Access Control

access control, attribute-based encryption, privacy-preserving policy, outsourced data management

IBM Research - Almaden
650 Harry Rd
San Jose, CA, U.S.
95120