Quantum computing is the next most significant disruptive technological leap and its rapid evolution and funding will soon make it a reality.While computer scientists and developers agree that quantum computing will still take some years to develop, research in the field is very active.
Subsequently, quantum computers could break the blockchain’s consensus by creating fake messages, which could jam the consensus protocol. Chaum said: For Buterin, the technology required to make Ethereum immune to a quantum attack could be developed “tomorrow”: In the event of a secret key leak, the backup key would generate proof of ownership and recuperate their funds in an updated quantum-resistant blockchain — essentially through a hard fork in the blockchain.
An illustrated diagram of Buterin’s theoretical Ethereum Improvement Proposal. Source: Ethereum ResearchChaum claimed that Buterin’s solution isn’t perfect and could create some turbulence for Ethereum users. He said that the consequences of the sudden halt of one of the most active blockchains should not be underestimated, stating that it could be catastrophic.John Woods, chief technology officer at the Algorand Foundation, told Cointelegraph that, while he believes Buterin is “hyper-competent,” he feels Ethereum could take a step further: “It’s evident that this post represents an emergency plan of action and not an elegant transition into a post-quantum cryptography era for Ethereum.
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