New Document: Hedera (HBAR) Is Quantum Resistant

Crypto researcher SMQKE has published a post on X asserting that Hedera can be classified as “quantum resistant,” emphasizing that documented technical specifications support the claim.

The post is presented as a direct reference to Hedera’s publicly available materials, focusing on the network’s cryptographic design and its ability to adapt to evolving security standards.

Hedera = “Quantum Resistant”✅

Documented.📝👇

— SMQKE (@SMQKEDQG) March 31, 2026

Hedera’s Architecture and Consensus Model

The material shared alongside the post outlines Hedera’s use of a directed acyclic graph structure rather than a traditional blockchain. This design allows transactions to be processed in parallel rather than sequentially, which distinguishes it from conventional distributed ledger systems.

The documentation further explains that the network relies on a hashgraph consensus mechanism built on a gossip protocol that distributes information efficiently across nodes.

According to the referenced text, the system is supported by asynchronous Byzantine Fault Tolerance, a security model that enables consensus even when some nodes behave maliciously. This framework is presented as a key component of Hedera’s resilience and reliability in adversarial conditions, reinforcing the network’s broader security posture.

Cryptographic Standards and Quantum Considerations

The post places particular emphasis on the cryptographic standards implemented within the network. The attached material specifies the use of CNSA-aligned standards in Transport Layer Security connections between nodes, and in cryptographic operations executed on-chain.

It highlights the inclusion of 384-bit SHA-2 hashing in HMAC constructions, described in the document as “quantum resistant” under current CNSA 2.0 guidance.

Additional cryptographic components referenced include 256-bit AES keys for symmetric encryption and RSA with 2048-bit keys. The documentation also notes support for modern signature algorithms such as Ed25519 and ECDSA using the secp256k1 curve. These elements are presented collectively to demonstrate the breadth of Hedera’s cryptographic framework.

Design Flexibility and Future Adaptation

SMQKE’s post also highlighted a key aspect of Hedera’s design: its capacity to integrate new cryptographic standards without requiring disruptive network upgrades. The referenced material states that Hedera was built to accommodate evolving demands and technological changes, including those associated with quantum computing.

The document explains that while many distributed ledger systems may require fundamental structural changes to adopt post-quantum cryptography, Hedera can introduce new algorithms without initiating a hard fork. It cites the network’s prior addition of ECDSA support after launch as evidence of this capability and indicates that similar upgrades could be implemented to address future quantum-related risks.

By presenting these documented specifications, SMQKE positions Hedera’s “quantum-resistant” label as a claim grounded in existing technical disclosures rather than speculation.