AMIS: Technical Achievements in the past & plans for 2022

We would like to express our gratitude to Coinbase developer grant for supporting our projects.

AMIS is a financial technology company that connects the traditional and decentralized worlds. Now, we develop new products aggressively such that everyone is able to adopt blockchain technology with ease and confidence. By means of sharing articles in the medium and opening research paper and libraries continuously, the team is motivated to a progressively higher capability.

More precisely, we have:

1. Open source：Hierarchical Threshold Signature Scheme library (Alice)
2. Gas Price Prediction
3. 2 Party computation of BIP32： Support the generation of hardened keys.

Except for academic research, AIMS also developed the following products:

1. Enterprise wallet service
2. Qubic wallet
3. A platform “NFT as a service” : Creator.

Managing Private Keys

During these years, our team is highly experienced in blockchain-related technology/algorithm implementing. We’ve learned that it is critical to manage private keys. All services in blockchain should prioritize this task. One way to address this concern is applying Multi-party-Computation (abbrev. MPC). By applying sophisticated MPC technology, many experts published numerous papers to establish interesting protocols called “Threshold signature Scheme”(abbrev. TSS). Introducing this protocol to manage private keys then become popular among many excellent companies and products.

The technology claims two main advantages:

1. It avoids the traditional single point of failure.
2. The private key never appears from birth to death.

We refer any reader, who want to know more, to the following literatures:

• Introduction to Hierarchical Threshold Signature(revised version)
• Threshold Signatures Explained

Looking forward to 2022

Comparing with general cryptographic protocols, TSS are often more complicated to implement. On top of the possible flaws in the protocol itself, any inappropriate implementations also produce unexpected security issues. In the light of this, we will continue to optimize and submit to audit the currently supported library Alice in this year including:

1. Schnorr Signature
2. BLS Signature
3. improving ECDSA, and BIP32.

By opening libraries, we hope that Alice not only enhances its functions, but also helps other developers to put into use. Lastly, we appreciate that Coinbase developer grant supports us with adequate resources to complete the above tasks.

Thanks to Yu-Te Lin and Ting-Fang Lee.

ChihYun Chuang

Cryptography Researcher @ AMIS

ChihYun is a cryptography researcher specializing in Multi-Party Computation (MPC) and Threshold Signature Schemes (TSS). He is dedicated to building robust and secure infrastructure for decentralized finance.