Melbourne, Australia, April 2025 – ExeQuantum, a cybersecurity company specializing in post-quantum cryptography, has officially launched a production-ready implementation of HQC-192, a NIST alternate finalist KEM, now accessible through a developer-facing API.

This marks one of the first real-world deployments of HQC as a hardened, side-channel-resistant cryptographic primitive, designed for practical integration by developers, enterprises, and security teams preparing for the quantum era.

“Post-quantum cryptography isn’t just about waiting for a standard to be finalized,” said Samuel Tseitkin, Founder & CEO of ExeQuantum. “It’s about building crypto-agility today, with diverse foundations, hardened implementations, and real deployment paths.”

Why HQC? Why Now?

While most of the industry focuses on ML-KEM (Kyber), ExeQuantum is investing in code-based cryptography as a strategic alternative. HQC offers security guarantees rooted in structured error-correction codes, providing resilience against the growing body of classical attacks targeting lattice-based constructions.

API Access with Post-Quantum TLS

The HQC API is secured via a hybrid post-quantum TLS channel, combining ECC with a post-quantum algorithm to safeguard secrets both in transit and at rest. Developers can generate, encapsulate, and decapsulate quantum-resistant shared secrets without implementing the cryptography themselves.

Beta Launch and NIST Timeline

HQC is currently in the final rounds of NIST’s post-quantum standardization process, with full standardization expected in 2027. Until then, ExeQuantum is offering HQC through beta-only endpoints, available to early adopters, researchers, and integration partners.

What’s Next: HQC in TLS

ExeQuantum is currently drafting a TLS 1.3 extension to support HQC+ECC hybrid handshakes, bringing HQC into the core of transport-layer security. The company is actively seeking partners interested in co-developing this ecosystem and testing the integration in TLS libraries and secure applications.

About ExeQuantum

ExeQuantum provides advanced post-quantum cryptography services, APIs, and integrations for enterprises preparing for the quantum threat. With a focus on cryptographic diversity, side-channel resilience, and real-world deployment, ExeQuantum bridges the gap between research and readiness.

Learn more at our website or use the HQC beta endpoints directly, with step by step available in our documentation.