Algorand bets on post-quantum security: full network transition by 2027
The Algorand Foundation has officially unveiled a large-scale roadmap for transitioning the network to "broad quantum resistance," with the final phase scheduled for the end of 2027. The first significant protocol updates are expected as early as the third quarter of 2026. This is not just protection against a hypothetical threat — it is a systemic response to the real challenges that the development of quantum computing poses to the crypto industry.
The plan covers all critical network components: accounts, wallets, developer tools, multi-signature, and even elements of consensus. The foundation emphasizes that a March analysis by Google Quantum AI showed that future quantum computers capable of breaking elliptic curve cryptography will require far fewer resources than previously assumed. This makes the transition not just desirable, but critically necessary.
What Has Already Been Done: The Foundation is Laid
Preparation began as early as 2022 with the introduction of State Proofs — compact ledger state certificates signed using the Falcon scheme every 256 rounds. In November 2025, the team conducted the first mainnet transaction authorized by Falcon signatures via the LogicSig mechanism. This was an important test, proving that post-quantum cryptography can work in real-world Algorand conditions.
Plan for 2026–2027: From Hybrids to Full Replacement
The protocol release scheduled for the third quarter of 2026 will introduce native support for post-quantum accounts. This will eliminate the need for workarounds like LogicSig. SDKs will allow creating Falcon-1024 accounts from a standard 25-word seed phrase. The network will maintain compatibility with Ed25519 but will add support for Falcon-1024, Falcon-512, ML-DSA, and other schemes. Special emphasis is placed on hybrid accounts, which will combine classical and post-quantum keys — ensuring a smooth transition without loss of functionality.
By the end of 2026, the implementation of native multi-signature for multiple cryptographic schemes and support for Falcon-512 is planned. The Algorand Foundation will also begin migrating its own treasury to post-quantum accounts, serving as a signal to the entire community. Staking participants will also gain the ability to use such addresses.
A separate block of work concerns consensus. Currently, the selection of committee members depends on VRF based on elliptic curves, and consensus messages are signed via Ed25519. These mechanisms are not considered resistant to quantum attacks. The foundation plans to present research work on post-quantum VRF by early 2027, and for consensus messages, a hybrid model using Ed25519 and Falcon is being considered.
"Post-quantum security cannot be patched after Q-Day," said Bruno Martins, CTO of the Algorand Foundation.
The roadmap separately notes that the timelines and composition of releases are predictive in nature and may change as post-quantum cryptography standards evolve. This is a sensible approach: the technology is not yet fully formed, and flexibility here is a competitive advantage.
My analysis: Algorand demonstrates a mature and pragmatic approach to the quantum threat, which stands out favorably from the reactive strategies of many other blockchains. However, the key challenge will be not so much implementation, but maintaining performance and user convenience. The experience of BNB Chain, where tests showed a significant drop in speed, is a warning sign. If Algorand manages to solve this problem, it could become a benchmark for post-quantum security in the industry.