Publications

2025

Journal Papers

• Naoki Matsumoto, Daisuke Kotani, Yasuo Okabe, D4C: Fast and Efficient Container Image Updating for Edge with Delta Encodings, IEICE Transactions on Communications, Vol.E108-B, No.7, pp.780-795, Jul. 2025.

• Hiroya Onoe, Daisuke Kotani, Yasuo Okabe, PiCoP: Service Mesh for Sharing Microservices in Multiple Environments using Protocol-Independent Context Propagation, IEEE Transactions on Cloud Computing, Vol.13, No.1, pp.383-396, Jan.-Mar. 2025.

Conference Papers

• Hiroya Onoe, Daisuke Kotani, Yasuo Okabe, Tiaccoon: Unified Access Control with Multiple Transports in Container Networks, Proceedings of the ACM/IFIP Middleware 2025, Dec. 2025, Slide.

• Raiki Tamura, Daisuke Kotani, Kazuyuki Shudo, Yasuo Okabe, Bringing Together Cross-ISA Checkpoint/Restoration and AOT Compilation of WebAssembly Programs, Proceedings of the 22nd ACM SIGPLAN International Conference on Managed Programming Languages and Runtimes (MPLR ‘25), Oct. 2025.

• Kosei Shimoda, Daisuke Kotani, Yasuo Okabe, Impact Evaluation of Attacks on Data Flows in Systems With Heterogeneous Redundant Resources, Proceedings of the 15th IEEE International Workshop on Network Technologies for Security, Administration & Protection (NETSAP 2025), Jul. 2025.

• Hiroaki Aoyama, Daisuke Kotani, Yasuo Okabe, Operational Planning of a Home Energy Management System Using Regional Weekly Weather Forecasts to Mitigate Surplus Electricity, Proceedings of the 13th IEEE International Workshop on Consumer Devices, Systems and Services (CDS 2025), Jul. 2025.

• Tomoyuki Ehira, Daisuke Kotani, Yasuo Okabe, Distributed Tracing for Cascading Changes of Objects in the Kubernetes Control Plane, Proceedings of the 40th ACM/SIGAPP Symposium On Applied Computing (ACM SAC ‘25), Mar. 2025.

• Masahito Kumazaki, Daisuke Kotani, Yasuo Okabe, Attack Trace Dataset Generation Considering Organizational System Characteristics, Proceedings of the 4th Workshop on Information System Security (WISS 2025), Jan. 2025.

Technical Reports and Preprints

• Tamura Raiki, Kotani Daisuke, Okabe Yasuo, Wanco: WebAssembly AOT Compiler that supports Live Migration, POPL 2025 Student Research Competition, Jan. 2025.

2024

Journal Papers

• Masato Hirai, Daisuke Kotani, Yasuo Okabe, Linking Contexts from Distinct Data Sources in Zero Trust Federation, Journal of Information Processing, Vol.32, pp.288-296, Mar. 2024.

Conference Papers

• Soichiro Ueda, Ai Nozaki, Daisuke Kotani, Yasuo Okabe, Mewz: Lightweight Execution Environment for WebAssembly with High Isolation and Portability using Unikernels, Proceedings of the 2nd Workshop on Hot Topics in System Infrastructure (HotInfra 2024), Nov. 2024.

• Shinnosuke Kataoka, Daisuke Kotani, Yasuo Okabe, NI-SPA: SPA-Based Dynamic Access Control Utilizing In-Network Behavior, Proceedings of the ACM SIGCOMM 2024 Workshop on Zero Trust Architecture for Next Generation Communications (ZTA-NextGen 2024), Aug. 2024.

• Kazuki Takashima, Daisuke Kotani, Yasuo Okabe, DDoS Attack Information Sharing Among CDNs Interconnected Through CDNI, Proceedings of the 14th IEEE International Workshop on Network Technologies for Security, Administration & Protection (NETSAP 2024), Jul. 2024.

• Masato Hirai, Daisuke Kotani, Yasuo Okabe, Putting Authorization Servers on User-owned Devices in User-Managed Access, Proceedings of the 39th International Conference on ICT Systems Security and Privacy Protection (IFIP SEC 2024), Jun. 2024.

Technical Reports and Preprints

• Tomoyuki Ehira, Daisuke Kotani, Yasuo Okabe, Distributed Tracing for Cascading Changes of Objects in the Kubernetes Control Plane, arXiv preprint arXiv:2411.01336, Nov. 2024.

• Soichiro Ueda, Ai Nozaki, Daisuke Kotani, Yasuo Okabe, Mewz: Lightweight Execution Environment for WebAssembly with High Isolation and Portability using Unikernels, arXiv preprint arXiv:2411.01129, Nov. 2024.

2023

Journal Papers

• Masaki Kobayashi, Yo Kanemoto, Daisuke Kotani, Yasuo Okabe, Generation of IDS Signatures through Exhaustive Execution Path Exploration in PoC Codes for Vulnerabilities, Journal of Information Processing, Vol.31, pp.591-601, 2023.

• Takuya Urimoto, Daisuke Kotani, Yasuo Okabe, Vantage Point Placement Based on Inference of AS-level Connections, Journal of Information Processing, Vol.31, pp.155-164, 2023.

• Naoki Matsumoto, Daisuke Kotani, Yasuo Okabe, CREBAS: Enabling Network Access Control in a Home with One Click, Journal of Information Processing, Vol.31, pp.174-184, 2023.

Conference Papers

• Kodai Mizutani, Daisuke Kotani, Yasuo Okabe, Visibility of Scan Traffic Trends in Sparsely Populated Darknets, Proceedings of the EAI SecureComm 2023, Oct. 2023.

• Hiroya Onoe, Daisuke Kotani, Yasuo Okabe, Protocol-Independent Context Propagation for Sharing Microservices in Multiple Environments, Proceedings of the 11th IEEE International Conference on Cloud Engineering (IC2E), Sep. 2023, Slide.

• Naoki Matsumoto, Daisuke Kotani, Yasuo Okabe, Efficient Container Image Updating in Low-bandwidth Networks with Delta Encoding, Proceedings of the 11th IEEE International Conference on Cloud Engineering (IC2E), Sep. 2023.

• Keisuke Hamajima, Daisuke Kotani, Yasuo Okabe, Partial Outsourcing of Malware Dynamic Analysis Without Disclosing File Contents, Proceedings of the 2023 IEEE 47th Annual Computer Software and Applications Conference (COMPSAC), pp.717-722, Jun. 2023.

• Kodai Hatakeyama, Daisuke Kotani, Yasuo Okabe, Key Management Based on Ownership of Multiple Authenticators in Public Key Authentication, Proceedings of the 38th International Conference on ICT Systems Security and Privacy Protection (IFIP SEC 2023), Jun. 2023, Slide.

Technical Reports and Preprints

• Tomoyuki Ehira, Daisuke Kotani, Hiroki Shirokura, Hirofumi Ichihara, Yasuo Okabe, Monitoring Cascading Changes of Resources in the Kubernetes Control Plane, arXiv preprint arXiv:2307.12567, Jul. 2023.

Talks and other articles

• Daisuke Kotani, Cybersecurity Research @ Kyoto University, The 3rd KISTI and NII Joint Security Workshop, Sep. 2023.

2022

Conference Papers

• Masato Hirai, Daisuke Kotani, Yasuo Okabe, Linking Contexts from Distinct Data Sources in Zero Trust Federation, Proceedings of the 5th International Workshop on Emerging Technologies for Authorization and Authentication (ETAA 2022), Sep. 2022.

• Kentaro Ohnishi, Daisuke Kotani, Hirofumi Ichihara, Yohei Kanemaru, Yasuo Okabe, Acila: Attaching Identities of Workloads for Efficient Packet Classification in a Cloud Data Center Network, Proceedings of the ACM SIGCOMM 2022 Workshop on Future of Internet Routing & Addressing (FIRA 2022), Aug. 2022, Slide.

• Naoki Matsumoto, Daisuke Kotani, Yasuo Okabe, Capability Based Network Access Control for Smart Home Devices, Proceedings of the International Workshop on Pervasive Information Flow (PerFlow'22), Mar. 2022.

Technical Reports and Preprints

• Masato Hirai, Daisuke Kotani, Yasuo Okabe, Linking Contexts from Distinct Data Sources in Zero Trust Federation, arXiv preprint arXiv:2209.11108, Sep. 2022.

• Koudai Hatakeyama, Daisuke Kotani, Yasuo Okabe, Zero Trust Federation: Sharing Context under User Control toward Zero Trust in Identity Federation, arXiv preprint arXiv:2209.11025, Sep. 2022.

• Koudai Hatakeyama, Daisuke Kotani, Yasuo Okabe, Key Management Based on Ownership of Multiple Authenticators in Public Key Authentication, arXiv preprint arXiv:2204.05471, Apr. 2022.

Talks and other articles

• Daisuke Kotani, Acila: Attaching Identities of Workloads for Efficient Packet Classification in a Cloud Data Center Network, ITRC meet51, Aug. 2022.

2021

Journal Papers

• Yoshinari Kanaya, Katsuyoshi Iida, Daisuke Kotani, Teaching Materials Development and Practice of Security-Mind Edication, Computer Software, Vol.38, No.1, pp.1_38-1_44, 2021 (in Japanese).

Conference Papers

• Takuya Urimoto, Daisuke Kotani, Yasuo Okabe, Analysis of Inter-regional Relationship among Regional Tier-1 ASes in the Internet, Proceedings of the 9th IEEE International Workshop on Architecture, Design, Deployment & Management of Networks & Applications (ADMNET 2021), Jul. 2021.

• Daisuke Kotani, Taku Tanaka, Yasuo Okabe, QoS Network control for elderly support services, Proceedings of the 9th IEEE International Workshop on Consumer Devices & Systems (CDS 2021), Jul. 2021.

• Koudai Hatakeyama, Daisuke Kotani, Yasuo Okabe, Zero Trust Federation: Sharing Context under User Control towards Zero Trust in Identity Federation, Proceedings of the 2021 International Workshop on Pervasive Information Flow (PerFlow 2021), pp.514-519, Mar. 2021, Accepted Version.

Technical Reports and Preprints

• Kentaro Ohnishi, Daisuke Kotani, Hirofumi Ichihara, Yohei Kanemaru, Yasuo Okabe, Acila: Attaching Identities of Workloads for Efficient Packet Classification in a Cloud Data Center Network, arXiv preprint arXiv:2109.08343, Sep. 2021.

2020

Journal Papers

• Yo Kanemoto, Kazufumi Aoki, Jun Miyoshi, Daisuke Kotani, Yasuo Okabe, Correlating HTTP Request with Host Events for Efficient Host based Intrusion Detection Alert Analysis, Transactions of Information Processing Society of Japan, Vol.61, No.5, pp.1080-1091, May 2020 (in Japanese).

Conference Papers

• Dongyang Li, Daisuke Kotani, Yasuo Okabe, Improving Attack Detection Performance in NIDS Using GAN, Proceedings of the 2020 IEEE 44th Annual Computer Software and Applications Conference (COMPSAC), pp.817-825, Jul. 2020.

• Kaku Sawada, Daisuke Kotani, Yasuo Okabe, Network Routing Optimization Based on Machine Learning Using Graph Networks Robust against Topology Change, Proceedings of the 34th International Conference on Information Networking (ICOIN 2020), pp.608-615, Jan. 2020.

• Kei Wakabayashi, Daisuke Kotani, Yasuo Okabe, Traffic-aware Access Control List Reconstruction, Proceedings of the 34th International Conference on Information Networking (ICOIN 2020), pp.615-626, Jan. 2020.

Technical Reports and Preprints

• Yoshinari Kanaya, Daisuke Kotani, Katsuyoshi Iida, Hideaki Sone, Ethical Education on Information Security Mind for Practical Security Learning, IEICE Tech. Rep., Vol.120, No.177, pp.6-9, Oct. 2020.

2019

Conference Papers

• Yo Kanemoto, Kazufumi Aoki, Makoto Iwamura, Jun Miyoshi, Daisuke Kotani, Hiroki Takakura, Yasuo Okabe, Detecting Successful Attacks from IDS Alerts Based on Emulation of Remote Shellcodes, The 9th IEEE International Workshop on Network Technologies for Security, Administration and Protection (NETSAP2019), Proceedings of the 2019 IEEE 43rd Annual Computer Software and Applications Conference (COMPSAC), Vol.2, pp.471-476, Jul. 2019.

• Laura Fiorini, Alessandra Sorrentino, Daisuke Kotani, Hiroshi Hoshino, Estibaliz Arzoz Fernandez, Yasuo Okabe, Masahiko Tsukamoto, Yutaka Yanagisawa, Kyosuke Futami, Delphine Lefebvre, Filippo Cavallo, Toward a Internet of Robotic Things architecture to support citizens in mobility, daily-life and socialization applications: a case study, IEEE ICRA Workshop Advances and Challenges on the Development, Testing and Assessment of Internet of Robotic Things (IoRT), May 2019.

• Daisuke Kotani, An Architecture of a Network Controller for QoS Management in Home Networks with Lots of IoT Devices and Services, Proceedings of the 2019 16th IEEE Annual Consumer Communications & Networking Conference (CCNC), Jan. 2019.

Technical Reports and Preprints

• Futami Kyosuke, Yanagisawa Yutaka, Hoshino Hiroshi, Matsumori Aiko, Tsukamoto Masahiko, Kotani Daisuke, Okabe Yasuo, Data Distribution Infrastructure and Applications for Robotic Therapy for Blind Elderly, Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers (UbiComp/ISWC ‘19 Poster), Sep. 2019.

• Urimoto Takuya, Kotani Daisuke, Okabe Yasuo, Analysis of Inter-regional Relationship among Regional Tier-1 ASes in the Internet, Joint Poster session of the 14th International Conference on Future Internet Technologies (CFI2019) and 15th Asian Internet Engineering Conference (AINTEC2019), Aug. 2019.

2018

Conference Papers

• Keitaro Yamazaki, Daisuke Kotani, Yasuo Okabe, Xilara: An XSS Filter Based on HTML Template Restoration, Proceedings of the 14th EAI International Conference on Security and Privacy in Communication Networks (SecureComm 2018), Aug. 2018, Accepted Version.

• Ryoh Akiyoshi, Daisuke Kotani, Yasuo Okabe, Detecting Emerging Large-Scale Vulnerability Scanning Activities by Correlating Low-Interaction Honeypots with Darknet, The 8th IEEE International Workshop on Network Technologies for Security, Administration and Protection (NETSAP2018), in Proceedings of the IEEE 42nd Annual Computer Software and Applications Conference (COMPSAC2018), Vol.2, pp.658-663, Jul. 2018.

• Tsubasa Munemitsu Strategy, Daisuke Kotani, Yasuo Okabe, A Mixed Integer Programming Solution for Network Optimization Under Tunneling-Based Traffic Engineering Schemes, The 2nd IEEE International Workshop on Future Internet Technologies (IWFIT2018), in Proceedings of the IEEE 42nd Annual Computer Software and Applications Conference (COMPSAC2018), Vol.2, pp.769-776, Jul. 2018.

2017

Conference Papers

• Tomohiro Ito, Daisuke Kotani, Yasuo Okabe, A Threshold-Based Authentication System Which Provides Attributes Using Secret Sharing, The 3rd IEEE International Workshop on Secure Identity Management in the Cloud Environment (SIMICE), in Proceedings of the IEEE 41st Annual Computer Software and Applications Conference (COMPSAC2017), Vol.2, pp.730-735, Jul. 2017.

Technical Reports and Preprints

• Keitaro Yamazaki, Daisuke Kotani, Yasuo Okabe, Xilara: XSS audItor using htmL templAte restoRAtion, IEICE Tech. Rep., Vol.117, No.299, pp.89-94, Nov. 2017.

2016

Journal Papers

• Daisuke Kotani, Kazuya Suzuki, Hideyuki Shimonishi, A Multicast Tree Management Method Supporting Fast Failure Recovery and Dynamic Group Membership Changes in OpenFlow Networks, Journal of Information Processing, Vol.24, No.2, pp.395-406, Mar. 2016.

• Daisuke Kotani, Yasuo Okabe, A Packet-In Message Filtering Mechanism for Protection of Control Plane in OpenFlow Switches, IEICE Transactions on Information and Systems, Vol.E99-D, No.3, pp.695-707, Mar. 2016.

Technical Reports and Preprints

• Yu Takabatake, Daisuke Kotani, Yasuo Okabe, An anonymous distributed electronic voting system using Zerocoin, IEICE Tech. Rep., Vol.116, No.282, pp.127-131, Nov. 2016.

2015

Conference Papers

• Daisuke Kotani, Yasuo Okabe, Fast Failure Detection of OpenFlow Channels, Proceedings of the 11th Asian Internet Engineering Conference (AINTEC 2015), pp.32-39, Nov. 2015.

2014

Conference Papers

• Daisuke Kotani, Yasuo Okabe, A Packet-In Message Filtering Mechanism for Protection of Control Plane in OpenFlow Networks, Proceedings of the 10th ACM/IEEE Symposium on Architectures for Networking and Communications Systems (ANCS2014), pp.29-40, Oct. 2014.

2013

Conference Papers

• Yoshiharu Tsuzaki, Ryosuke Matsumoto, Daisuke Kotani, Shuichi Miyazaki, Yasuo Okabe, A Mail Transfer System Selectively Restricting a Huge Amount of E-mails, Proceedings of the Workshop on Resilient Internet based Systems (REIS 2013), Dec. 2013.

Technical Reports and Preprints

• Kotani Daisuke, Okabe Yasuo, A Packet-In Message Filter in OpenFlow Switches for Reducing Control Messages, AsiaFI 2013 Summer School, Aug. 2013.

2012

Conference Papers

• Daisuke Kotani, Yasuo Okabe, Packet-In Message Control for Reducing CPU Load and Control Traffic in OpenFlow Switches, Proceedings of the European Workshop on Software Defined Networks (EWSDN), pp.42-47, Oct. 2012.

• Daisuke Kotani, Kazuya Suzuki, Hideyuki Shimonishi, A design and implementation of OpenFlow Controller handling IP multicast with Fast Tree Switching, Proceedings of the 12th IEEE/IPSJ International Symposium on Applications and the Internet (SAINT2012), pp.60-67, Jul. 2012.

• Hideyuki Shimonishi, Yasuhito Takamiya, Yasunobu Chiba, Kazushi Sugyo, Youichi Hatano, Kentaro Sonoda, Kazuya Suzuki, Daisuke Kotani, Ippei Akiyoshi, Programmable Network Using OpenFlow for Network Researches and Experiments, Proceedings of the 6th International Conference on Mobile Computing and Ubiquitous Networking (ICMU2012), May 2012.

2011

Conference Papers

• Daisuke Kotani, Satoshi Nakamura, Katsumi Tanaka, Supporting Sharing of Browsing Information and Search Results in Mobile Collaborative Searches, Proceedings of the 12th International Conference on Web Information Systems Engineering (WISE2011), pp.298-305, Oct. 2011.