Committing to Quantum Resistance: Defences for Bitcoin Quantum Adversaries

[Dionysis Zindros]

Tomorrow Wednesday at noon Greek time, Dragos Ilie from Imperial College London will speak at the Decrypto seminar about Quantum Resistant Bitcoin.

Title: Committing to Quantum Resistance: Defences for Bitcoin Quantum Adversaries

Abstract:

Quantum computers are expected to have a dramatic impact on numerous fields, due to their anticipated ability to solve classes of mathematical problems much more efficiently than their classical counterparts. This particularly applies to domains involving integer factorisation and discrete logarithms, such as public key cryptography. In this talk, we consider the threats a quantum-capable adversary could pose to Bitcoin, which currently uses the Elliptic Curve Digital Signature Algorithm (ECDSA) to sign transactions. We then propose a simple commit--delay--reveal protocol and a variant of it where the security parameter is configurable. These schemes allow users to securely move their funds from old (non-quantum-resistant) outputs to those adhering to a quantum-resistant digital signature scheme.

Join: https://zoom.us/j/96663052120?pwd=UkJnTVF1ME5nQlRRUnd4WWd2Z1JLUT09

Password: D93vFQ

More seminars: https://decrypto.org/seminar/