Shogo

Studying authentication and identity systems.

Kyoto University, Department of Informatics / B4

About

I'm a fourth-year undergraduate student in the Department of Informatics at Kyoto University. I study computer science broadly, with a focus on web development. I'm especially interested in security technologies such as authentication and authorization.

In my university research, I work on conceiving and validating a new authentication method that uses "space" as a clue. I'm building the authentication system itself along the way, and I plan to try it out in a variety of settings going forward.

I value learning by understanding things hands-on. Building an authorization server, client, and resource server from scratch for OAuth 2.0 and OIDC is one example. I'm also learning other technologies, such as frontend development, in parallel.

Projects

Personal projects

AuthForge

Ongoing series

An article series where I built up my understanding of authentication and authorization one step at a time, starting from Basic authentication, and wrote it up so that others can follow along. I turned what I learned into implementations, then ran them and tried attacks on my own machine to confirm how each mechanism actually works. For now, the series covers Basic authentication through OIDC as one self-contained set. Going forward, I plan to keep writing about the latest authentication and authorization technologies, such as Passkeys and OpenID4VCI.

AuthenticationAuthorizationOAuth 2.0OIDC

Docs →GitHub

Horse Game

Published

The Horse Game payout screen, showing the finishing order and the winnings for each bet

A horse racing game built to learn TypeScript. I made it more fun to play by giving each horse hidden parameters and offering several types of bets. The UI is composed of React components, with multiple pieces of state interacting to drive the whole flow, and I focused on keeping game logic separate from the UI. No login required, so you can start playing right away.

TypeScriptReactViteVercel

Demo →GitHub

Skills

Technologies I use

Core

OAuth 2.0 / OIDCUnderstand how each flow works, and have implemented the authorization server, client, and resource server myself
TypeScript / ReactUsed while learning frontend development. Comfortable with the basics of building a screen out of components

Used in Research

PythonBuilt the research backend with FastAPI. Wrote the processing that analyzes spatial data with Open3D, a 3D data processing library, and runs evaluations repeatedly
SwiftDeveloping a research app that measures space via ARKit
TypeScriptBuilt an admin dashboard for reviewing research data analysis results right away

Familiar With

C++Studied algorithms and data structures in my informatics curriculum; AtCoder green
PostgreSQLLearned database design and indexing in university coursework
Git / GitHubUsed day to day in personal projects

Career

My background

Apr 2023Enrolled at Kyoto University, Department of Informatics
Apr 2026Joined a research lab and started research on authentication using spatial information
Apr 2027Expected enrollment, Graduate School of Informatics, Kyoto University
Mar 2029Expected completion, Graduate School of Informatics, Kyoto University

Writing

I write technical articles on Zenn.

I write about authentication and security, along with computer science topics more broadly, summarizing what I've learned.

Visit Zenn →

Contact

Feel free to reach out by email. I share my work on GitHub and Zenn