Sui Adopts Post-Quantum Signature Schemes In Move Toward Quantum Readiness
Grand Cayman, Cayman Islands, August 6th, 2026/Chainwire/--Sui, where money moves as freely as messages, announced today that it is adopting two post-quantum signature schemes in its move toward quantum readiness.
The quantum timeline is different for blockchains, because a public key onchain is different from a public key anywhere else. In most systems, an attacker needs a breach before they can start working on a key. Onchain, the key is already published, exposed permanently the moment an account transacts.
Shor's algorithm breaks the elliptic-curve cryptography behind most onchain accounts today, the same math securing banking systems and most of the internet. Harvest-now-forge-later collection doesn't require quantum hardware; it requires a visible key and patience. The exposure is already accruing. In March 2026, Google Quantum AIestimated that exactly this attack, recovering a private key from an exposed public key, would run in minutes on a fault-tolerant machine of...
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