A new study by Google has revealed how many computers could one day destroy the cryptographic systems that make up large blockchains. It reinforces recent efforts by the Ethereum Foundation to prepare for the future of quantum.
This paper compares that quantum systems with about 1,200-1,450 logical qubits can break the widely used elliptic curve cryptography.. This includes the secp256k1 standard used in Bitcoin and Ethereumin a few minutes.
The findings come a few days after Ethereum outlined a multi-year plan to transition to quantum-resistant cryptography, signaling the development of long-term security.
Quantum’s attack window can be tested in minutes
One of the key points of this paper is the so-called “on-spend” attack. This is where a quantum computer can access a user’s private key after it has been released but before it has been verified.
Researchers compare this the window can be as short as 9-12 minutespossible to turn a commercial mempool into an attack surface.
Beyond action, this paper also highlights the dangers of dormant wallets. Addresses with exposed keys may be at risk of “breathing”, which could put seniors at risk if the rate of overcrowding continues.
The Ethereum roadmap goes fast
Ethereum was recently launched The post-quantum security hub reported a gradual migration across its systems, collaboration, and data layers, emphasizing “cryptographic agility” to enable gradual upgrades.
Although the Ethereum Foundation has previously stated the risks of a long-term increase, recent research suggests that the development period may need to be accelerated.
The transition is expected to take years, as post-quantum cryptographic schemes introduce larger signatures and increase computing demands, requiring careful coordination across networks.
A large scale attack raises other concerns
The paper claims that Ethereum’s architecture can exhibit high levels of attack compared to simpler blockchain systems. This is because it relies on smart contracts, proof of value, and data mining techniques.
This complexity can make communication more difficult as the network evaluates which policies to follow.
In response to the growing discussion on the topic, Changpeng Zhao said “there is no need to panic.” He noted that blockchain systems can evolve into non-quantitative algorithms.
However, he acknowledged that social integration, potential forks, and migration of user wallets could disrupt the project.
The challenges of migration go beyond technical skills
Beyond protocol changes, the evolution of post-quantum cryptography may require users to transfer funds to new wallets more quickly.
Industry participants have also raised questions about the underlying assets, including the Bitcoin startup, which could be at risk if not updated in time.
The paper emphasizes that although quantum computing does not pose an immediate risk, delaying planning can create long-term risks as the technology advances.
Brief Summary
- New research shows that attacks on blockchain cryptography can be carried out within minutes, reinforcing the importance of advance planning.
- Ethereum’s multi-year evolution system shows a rapid increase, although integration and migration of users remain major challenges.
