Daily Crypto Briefs 
CASABLANCA, August 7, 2026
Sui said it will add quantum-safe account options built on two U.S. standards, targeting mainnet vaults this year and native account authentication in the first quarter of 2027, while allowing users to retain their recovery phrase and, through address aliases, their existing address.
The announcement gives the layer-1 network a staged response to a long-term cryptography risk without declaring its current accounts quantum-resistant. Sui said the capability will be opt-in and remains subject to independent audits and testnet feedback, meaning the dates are development targets rather than a completed security upgrade.
SUI traded near $0.6716 when assessed, up 0.5% in 24 hours but down 1.9% over seven days, according to CoinGecko. The token’s market capitalization was about $2.74 billion, 24-hour volume was about $170.7 million, and its 30-day return was 5.6%, data showed.
In its August 6 announcement, the Sui Foundation said, “Quantum-safe vaults are targeted for Mainnet this year,” while native ML-DSA-65 accounts are targeted for testnet by year-end and native authentication for mainnet in Q1 2027. The foundation said its core implementation is built and benchmarked, but audit work is still underway.
The practical issue is not a known quantum theft today. It is whether wallets can move to a new signature system before a sufficiently capable machine can derive a private key from a public key already exposed onchain. Sui’s plan differs from a chain-wide consensus replacement: it adds account and vault options while leaving existing accounts and applications unchanged.
Sui
SUISui’s quantum-safe accounts keep recovery phrases and addresses
Sui said ML-DSA-65 private keys will use a 32-byte seed derived from the same recovery phrase that wallets already store, through a new derivation path. The project said wallets will therefore back up and restore the new keys through the usual recovery-phrase process.
For existing accounts, the proposed route relies on address aliases, a feature Sui says is already live. An account would update its authorization key to a post-quantum key without transferring the assets out, preserving the address rather than forcing a visible wallet migration.
That detail distinguishes the announcement from a simple instruction to generate a new wallet. A change to an authorization key is intended to reduce operational risk for users and applications that rely on an established address, but it does not remove the need for a wallet and ecosystem rollout.
Sui said no application needs to do anything today and called the planned accounts additive. That makes the new path closer to Sui’s existing authentication extensions than to a mandatory hard fork. The schedule also follows the network’s recent JSON-RPC migration, another example of infrastructure changes requiring application teams to track implementation deadlines.
ML-DSA-65 and SLH-DSA split Sui’s quantum-risk response
The project chose different cryptographic families for different use cases. ML-DSA-65, standardized in NIST FIPS 204, is intended as a native protocol signature scheme for everyday accounts. For high-value vaults, Sui plans to use hash-based SLH-DSA-SHA2-128s inside Move smart contracts, a design covered by NIST FIPS 205.
Sui said the dual approach limits dependence on one mathematical assumption. The lattice-based and hash-based schemes have different security foundations, so a future weakness in one would not automatically compromise both planned routes.
There is a trade-off. Sui said post-quantum public keys and signatures are substantially larger than the current Ed25519 pair, increasing transaction size. It said ML-DSA-65 verification is close enough to Ed25519 that per-signature network cost will not rise, while transaction-size limits and programmable transaction blocks are meant to absorb the remaining overhead.
The announcement is part of a broader race to make wallet migrations workable before quantum machines pose a live risk. Daily Crypto Briefs recently covered NEAR’s quantum-safe signing upgrade and Ethereum’s separate quantum-safe key registry. Those efforts do not share a single rollout method, but all center on avoiding a disruptive all-at-once migration.
Sui targets 2027 mainnet authentication as audits continue
Sui’s order of operations is specific: quantum-safe vaults are targeted for mainnet in 2026, native ML-DSA-65 accounts for testnet by the end of 2026, and native account authentication for mainnet in Q1 2027. Wallet, SDK and command-line support are expected alongside those milestones, the foundation said.
The timeline should not be read as a claim that Sui is already fully quantum-resistant. The foundation says audits and testnet feedback can change it, and its current plan focuses on account authorization and vaults rather than a wholesale redesign of consensus or existing state.
The current market backdrop was cautious but improved from the prior day. The Crypto Fear & Greed Index read 29, or Fear, on August 7, after showing 25, or Extreme Fear, one day earlier. That Bitcoin-centered indicator does not measure Sui-specific demand or security risk.
Fear & Greed Index
August 7, 2026What remains unknown is the audit outcome, the final wallet implementation and whether the mainnet target holds after testnet feedback. The next concrete signal is the planned quantum-safe vault rollout, while users and developers have no required migration action today.
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Primary sources and further reading
| Source | Title |
|---|---|
| | Sui Foundation: Making Sui Quantum Ready |
| | Sui documentation: Address aliases |
| | NIST: FIPS 204, Module-Lattice-Based Digital Signature Standard |
| | NIST: FIPS 205, Stateless Hash-Based Digital Signature Standard |
| | CoinGecko: Sui market data and price history |
| | Alternative.me: Crypto Fear and Greed Index |
Fact-checked by: Daily Crypto Briefs Fact-Check Desk
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Frequently Asked Questions
Is Sui quantum-safe today?
No. Sui said quantum-safe vaults and native ML-DSA-65 accounts are in development and are not a finished, fully audited production feature. It targets vaults for mainnet in 2026 and native account authentication for mainnet in Q1 2027.
Will Sui users need a new recovery phrase for quantum-safe accounts?
Sui said an ML-DSA-65 key will be derived from the recovery phrase users already hold through a new derivation path. The planned feature is opt-in and does not require users to act today.
Will quantum-safe Sui accounts require moving tokens to a new address?
Sui said its existing address-alias system will let an account update its authorization key while retaining its address and assets. The capability remains subject to the project's implementation, audit and rollout process.
What algorithms is Sui adding for quantum resistance?
Sui said it plans ML-DSA-65, a module-lattice digital-signature standard, for native accounts and SLH-DSA-SHA2-128s, a stateless hash-based signature standard, for high-value vaults implemented in Move smart contracts.