About Link to heading

I am a software engineer in networking architecture, networking protocols, and security & privacy in network. Currently I am working for Zettant Inc., Japan since Jan. 2018 as a Principal Researcher. I am also an Associate Professor at Department of Computer Science, School of Computing, Institute of Science Tokyo, Japan since Jan. 2026. Before that, I was an Associate Professor at Graduate School of Information Science, University of Hyogo, Japan from Jan. 2020 to Dec. 2025. I had been working for KDDI Corp. and KDDI R&D Labs., Inc. (Now KDDI Research, Inc.), Japan from Apr. 2006 to Dec. 2017 as a strategic planner and a researcher for security, applied mathematics and networking architecture. I had been with Palo Alto Research Center (PARC), CA, USA from 2013 to 2014, and with CyLab, Carnegie Mellon University, PA, USA in 2022 as a visiting researcher. I received BE, ME, and PhD in Engineering all from Tokyo Institute of Technology in 2004, 2006 and 2012, respectively.

My detailed CV is available here (PDF).

My current development projects and research interests are in:

  • Privacy and security in Domain Name Systems (DNS), and other related systems on the Internet and Internet services.
  • New computing and networking architecture and so-called ‘security-by-design’. Currently, I am interested in edge computing architecture, its security and privacy, e.g., new theoretical (and mathematical) framework of secure in-networking communication and computation, privacy-preserving computation at untrusted third-party edge environment.
  • Information-centric networking (Named-data networking; NDN) and its brand-new security mechanisms, e.g., security in edge named function environment.
  • Information security and privacy mechanisms using coding theoretic techniques, e.g., secret sharing, private information retrieval, etc.

Software Development Projects Link to heading

Most of them are Free/Libre and Open Source Software (FLOSS) projects.

  • Mutualized Oblivious DNS (μODNS): Anonymized DNS project — Project page
  • rpxy: A simple and ultrafast reverse-proxy for multiple domain names with TLS termination, written in pure Rust — GitHub / https://rpxy.io
  • rpxy-l4: A reverse proxy for the layer-4 (TCP+UDP) with protocol multiplexer, written in Rust — GitHub
  • rust-gd: A Rust implementation of Generalized Deduplication — GitHub
  • jscu: A Universal Cryptographic Library for JavaScript — GitHub
  • See also my GitHub for more.

Selected Publications Link to heading

Coding theory and its application to security techniques Link to heading

  • K. Nakano, J. Kurihara and T. Tanaka, ‘‘Extensive study on the security of private information delivery from coded storage,’’ IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E109-A, no. 3, pp. 725–733, Mar. 2026. [Online] Available at JSTAGE (Advance publication). [Supplementary paper (in English) and slides (in Japanese) presented in SITA 2025]
  • I. Kurihara, J. Kurihara and T. Tanaka, ‘‘A New Security Measure in Secret Sharing Schemes and Secure Network Coding,’’ IEEE Access, vol. 12, pp. 69163–69171, May 2024. [Online] Available at IEEE Xplore.
  • J. Kurihara, T. Nakamura and R. Watanabe, ‘‘Private Information Retrieval from Coded Storage in the Presence of Omniscient and Limited-Knowledge Byzantine Adversaries,’’ IEICE Trans. Fundamentals, vol. E104-A, no. 9, pp. 1271–1283, Sep. 2021. [Online] Available here (pdf) (Copyright IEICE).
  • J. Kurihara, R. Matsumoto and T. Uyematsu, ‘‘Relative Generalized Rank Weight of Linear Codes and Its Applications to Network Coding,’’ IEEE Trans. Information Theory, vol. 61, no 7, pp. 3912–3936, Jul. 2015. [Online] Available at Arxiv. [Slides at SITA2014 (in Japanese)]
  • J. Kurihara, T. Uyematsu and R. Matsumoto, ‘‘Secret Sharing Schemes Based on Linear Codes Can Be Precisely Characterized by the Relative Generalized Hamming Weight,’’ IEICE Trans. Fundamentals, vol. E95-A, no. 11, pp. 2067–2075, Nov. 2012. [Online] Avaliable here (pdf) (Copyright IEICE). [Review paper (in Japanese)]. [Slides at IEICE-IT-201503 (in Japanese)]
  • J. Kurihara, S. Kiyomoto, K. Fukushima and T. Tanaka, ‘‘On a Fast (k,n)-threshold Secret Sharing Scheme,’’ IEICE Trans. Fundamentals, vol. E91-A, no. 9, pp. 2365–2378, Sep. 2008. [Online] Available here (pdf) (Copyright IEICE).

New networking and computing architecture and its security Link to heading

  • R. Watanabe, A. Kubota, J. Kurihara, and K. Sakurai, ‘‘Extension of Resource Authorization Method with SSI in Edge Computing,’’ Proc. AINA 2024, vol. 6, pp. 385–394, Apr. 2024.
  • J. Kurihara, T. Tanaka and T. Kubo, ‘’μODNS: A Distributed Approach to DNS Anonymization with Collusion Resistance,’’ Computer Networks, Elsevier, vol. 237, p. 110078, Dec. 2023. [Online] Available at ScienceDirect and here (pdf).
  • R. Watanabe, A. Kubota and J. Kurihara, ‘‘Application of Generalized Deduplication Techniques in Edge Computing Environments,’’ Proc. AINA 2023, pp. 585–596, Mar. 2023.
  • R. Watanabe, A. Kubota and J. Kurihara, ‘‘Resource Authorization Methods for Edge Computing,’’ Proc. AINA 2022, pp. 67–179, Apr. 2022.
  • K. Ueda, K. Yokota, J. Kurihara and A. Tagami, ‘‘Two-level Named Packet Forwarding for Enhancing the Performance of Virtualized ICN Router,’’ IEICE Trans. Communications, vol. E102-B, no. 9, pp. 1813–1821, Sep. 2019.
  • J. Kurihara, K. Yokota and A. Tagami, ‘‘List Interest: Simply Packing Interests Dramatically Reduces Router Workload in Content-Centric Networking,’’ IEICE Trans. Communications, vol. E99-B, no. 12, pp. 2520–2531, Dec. 2016. [Online] Available here (pdf) (Copyright IEICE).
  • J. Kurihara, K. Yokota and A. Tagami, ‘‘A Consumer-driven Access Control Approach to Censorship Circumvention in Content-Centric Networking,’’ in Proc. ACM ICN 2016, Sep. 2016, pp. 186–194. [Online] Available at sigcomm.org (pdf).
  • J. Kurihara, E. Uzun and C. A. Wood, ‘‘An Encryption-based Access Control Framework for Content-Centric Networking,’’ in Proc. IFIP Networking 2015, May 2015, pp. 1–9. [Online] Available at ifip.org (pdf).

Teaching Link to heading

  • Information Literacy 1 & 2 (1Q-2Q, 2026, Undergraduate, Institute of Science Tokyo)
  • Security Engineering (Fall, 2020–2025, Graduate School of Information Science, University of Hyogo)
  • Network Security (Spring, 2021–2025, Graduate School of Information Science, University of Hyogo)
  • Information Security (Spring, 2021–2025, Graduate School of Information Science, University of Hyogo)
  • Information Security (Fall 2023–2025, School of Social Information Science, University of Hyogo)
  • Information Security (Spring 2020, Graduate School of Applied Informatics, University of Hyogo)
  • FIDO2 — Modern Authentication (2020, Zettant)
  • Introduction to End-to-End Encryption using JavaScript (2019, Zettant)

Grants Link to heading

  • NSF-NICT JUNO 3, 2022–2025 (Co-PI)
  • KDDI Foundation Research Grant, 2022–2024 (PI)
  • JSPS KAKENHI:
    • Grant-in-Aid for Scientific Research (B), 2025–2028 (PI)
    • Grant-in-Aid for Scientific Research (C), 2022–2025 (PI)
    • Grant-in-Aid for Scientific Research (B), 2021–2024 (Co; PI: Prof. Koizumi @Osaka Univ.)
    • Grant-in-Aid for Research Activity Start-up, 2020–2022 (PI)
  • University of Hyogo special grant for young researchers, 2021 (PI), 2020 (PI)

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Contact Link to heading

Please send me a message through my LinkedIn page, or via email found in my recent papers.