Crypto Firms Prepare for Quantum Computing Threat to Encryption
Synopsis
The cryptocurrency industry is developing new security measures as advances in quantum computing raise concerns that existing cryptography could eventually be broken, putting digital assets at risk.
Key Highlights
- Crypto firms are gearing up for the quantum computing threat to blockchain encryption
- Google predicted the arrival of quantum computers capable of breaking encryption by 2029.
- Some blockchain developers have proposed upgrades utilising post-quantum cryptography.
With recent advances in quantum computing, many companies are starting to prepare for the risk it poses to the cryptocurrency industry because these developments could make any cryptography protecting our transactions and digital wallets obsolete.
Quantum computers are capable of solving certain mathematical problems significantly faster than traditional computers and could be employed to break many current forms of conventional encryption. The US$2 trillion cryptocurrency market relies on blockchains secured by decade-old cryptography.
Research Shortens Timeline
In March 2023, Google published research indicating that quantum computers could reach the point where current cryptography can be broken years earlier than anticipated. On the other hand, Google predicted as early as 2029 that quantum computers would be able to break today′s encryption, about a decade sooner than many expected.
Numerous studies, including those by Citigroup, found that quantum computing, along with advances in AI is pushing the window in which crypto assets are susceptible to hacking into a shorter time frame. Last month, US President Donald Trump signed executive orders to bolster U.S. quantum capabilities.
Blockchain Developers Plan Upgrades
Other crypto firms and blockchain developers are now putting plans in place to eventually upgrade their networks using post-quantum cryptography, which is a multi-year process that could entail extensive modifications to blockchain infrastructure.
The majority of blockchains use elliptic-curve cryptography to create public and private keys that prove ownership of crypto assets. A strong enough quantum computer, researchers said, would be able to extract private keys from their public keys, leading to the possibility of fraudulent transactions.
In a paper set to be published in June 2026, independent researcher Ahmed Raza Muhammad Umer estimated that around 35% of Bitcoin’s circulating supply might be vulnerable to a quantum computing attack. Another study, published last year, estimated it could reach 50%.
Industry Preparing for Transition
None of the top 20 blockchains by market capitalisation has resulted in the deployment of a post-quantum signature algorithm, as per interviews.
The Ethereum Foundation aims to be quantum-robust by 2029. Last month, the Algorand Foundation published a post-quantum roadmap and will offer support for post-quantum accounts in late 2023.
Industry executives said that post-quantum cryptography is an evolving field, and implementing it too early would be more demanding in terms of storage and bandwidth, which could come at a cost to the user experience.
Source: Reuters
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