Tohoku University Technology: An anonymous key exchange technology with good security and simplicity: T18-057
User ID (public-key) management method for highly anonymous decentralized services
In cryptocurrencies such as Bitcoin, the user's offline privacy, which is linked to user ID (public-key), may be leaked by the frequent trading, because all transactions are fully disclosed on the blockchain. This invention provides a new technology for secretly exchanging depleted user IDs whose anonymity has declined with fresh ones through collaboration among other users (support users). Compared with current technologies, it has a resistance to the support users betray without any special changing of the blockchain mechanism. Amazingly, not only user's anonymity can be ensured, but also the transparency and versatility of services including the blockchain will be retained.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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