2026-04-10 –, Limmat (Y15-G-60)
A year ago post quantum transaction signatures for Ethereum were largely a theoretical exercise. Since then the conversation has shifted toward concrete engineering clearer requirements and realistic deployment paths.
This talk presents a one year check in on what changed what assumptions broke and what now looks shippable. A central outcome is the role of Account Abstraction AA as the enabling layer for post quantum signing both today via non native AA and as the long term destination via native AA. This dual path allows real world experimentation now while converging toward protocol level support.
We revisit leading signature candidates including Falcon and Dilithium in light of recent standardization progress hardware constraints and Ethereum specific integration work. Rather than forcing an early commitment to a single scheme we argue for a multi scheme approach and outline concrete next steps for the ecosystem.
A year ago post quantum transaction signatures for Ethereum were largely a theoretical exercise. Since then the conversation has shifted toward concrete engineering clearer requirements and realistic deployment paths.
This talk presents a one year check in on what changed what assumptions broke and what now looks shippable. A central outcome is the role of Account Abstraction AA as the enabling layer for post quantum signing both today via non native AA and as the long term destination via native AA. This dual path allows real world experimentation now while converging toward protocol level support.
We revisit leading signature candidates including Falcon and Dilithium in light of recent standardization progress hardware constraints and Ethereum specific integration work. Rather than forcing an early commitment to a single scheme we argue for a multi scheme approach and outline concrete next steps for the ecosystem.
Antonio is a Cryptographer and Researcher at the Ethereum Foundation, specializing in cryptographic protocols with a focus on elliptic curves and isogenies. He holds a PhD in Computer Science with a focus on Cryptography from Ruhr-University, where his research advanced the theoretical and practical understanding of elliptic curve and isogeny-based cryptography. Antonio's work bridges foundational cryptographic theory and its applications, contributing to the development of secure systems in the blockchain space. Previously, he worked at Adobe Research Switzerland and co-authored the book OAuth 2 in Action. His research interests center on the mathematical underpinnings of modern cryptographic schemes, particularly those leveraging algebraic structures.