Kostas Chalkias, co-founder and chief cryptographer of Sui developer Mysten Labs, has leased a specialized factory in a secret location to mass-produce quantum-safe hardware wallet cards for the Sui network. The goal is a per-card key cost of less than $10, with NFC quantum signing taking one to two seconds. Chalkias said he is pursuing the project in his personal time and may subsidize cards for users who cannot afford them. The move comes partly in response to the Coldcard hardware wallet event, where Coinkite disclosed a firmware flaw dating back to a 2021 update that bypassed the hardware RNG and generated keys via a predictable process tied to device serial numbers. Attackers have drained roughly 2,055 BTC, or about $130 million, from more than 7,700 addresses since July 30. Separately, Sui plans to adopt two NIST-approved quantum-resistant signature schemes - one for everyday accounts and one for high-value Move vaults - allowing existing users to rotate to quantum-safe keys from their original recovery phrase without migrating to a new wallet. The story was first reported by Bitcoin.com News.
Kostas Chalkias, co-founder and chief cryptographer at Mysten Labs, the developer behind the Sui blockchain, said he has leased a dedicated factory in a secret location to mass-produce quantum-safe hardware wallet cards for Sui. The project aims to keep the cost of each card's key below $10, with NFC quantum signing completing in one to two seconds.
Chalkias said he is working on the project in his personal time outside work, and may fund cards for users who cannot afford them. The plan is partly driven by the recent Coldcard hardware wallet incident, although that vulnerability was not a quantum attack.
Coldcard maker Coinkite disclosed that a firmware flaw, traceable to a 2021 update, bypassed the hardware random number generator and used a predictable software-based process tied to device serial numbers to generate keys. Attackers have been moving funds since July 30, with losses now at roughly 2,055 BTC, affecting more than 7,700 addresses and worth close to $130 million.
At the protocol level, Sui plans to adopt two quantum-resistant signature schemes approved by the U.S. National Institute of Standards and Technology (NIST), one for everyday accounts and one for high-value Move vaults. Existing accounts can rotate to quantum-safe keys based on their original recovery phrase without migrating to a new wallet.
(Source: Bitcoin.com News)
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