POST-QUANTUM CRYPTOLOGY · ON-DEVICE ENCRYPTION

Encrypt what has to stay secret for the next decade, not just today.

The formula that took your company twenty years to develop. The patient records you're legally required to protect for a lifetime. The merger discussions or classified information that can't leak, ever. If it has to stay secret for ten or more years, it's already exposed: adversaries are collecting encrypted data now to decrypt once quantum computing matures ("harvest-now, decrypt-later").

This isn't a distant concern. The U.S. government has already ordered its own agencies to migrate to post-quantum cryptography, with mandate timelines running through 2030 to 2033 (NSM-10, CNSA 2.0), because the threat is real enough to act on today. Quantum Guard lets you protect your most sensitive data with the same class of standards, now.

Built for the long haul

Keys quantum computers can't break

NIST FIPS 203 (ML-KEM): The post-quantum key standard selected by the U.S. government.

Signatures that prove authenticity

ML-DSA (NIST FIPS 204), so recipients can verify a file is genuine and unaltered.

Proven, layered encryption

AES-256 and ChaCha20 protect the content itself, alongside the post-quantum layer.

Nothing leaves your device

Encryption happens locally. No data is uploaded to a server, so there's no central store to breach.

No Black Boxes

Every element is standards-based and inspectable, not a proprietary black box.

Part of the Quantum Resilient Software suite

Guard protects data at rest, alongside Quantum Shroud for data in motion and Greenlight for identity.

Where Quantum Guard is used

Government & Defense

Classified information that can't leak, guarded against harvest-now, decrypt-later.

Critical Infrastructure

Control-system data kept confidential for the long haul, encrypted on the device.

Financial Services

Trading and account data whose secrecy must outlast today's cryptography.

Healthcare

Patient records you must protect for a lifetime, encrypted quantum-safe on-device.

Legal Services

Privileged files and client matters were kept confidential well into the quantum era.

Manufacturing

Formulas and trade secrets that must stay secret for decades, encrypted on-device.

Frequently asked questions

What is Quantum Guard?

Quantum Guard is an on-device encryption tool that protects messages, files, and long-term archives using post-quantum cryptography, so sensitive data stays confidential well into the quantum era.

What is "harvest-now, decrypt-later"?

It's the practice of collecting encrypted data today to decrypt later, once quantum computing matures. It's a threat to any information that has to stay confidential for years to come.

How is Quantum Guard different from regular encryption?

It uses the post-quantum standards the U.S. government selected (ML-KEM, ML-DSA), encrypts entirely on your device with nothing uploaded to a server, and is built to be inspected and verified rather than trusted as a black box.

Does my data get uploaded anywhere?

No. Quantum Guard encrypts on-device. Your data never leaves your control, so there's no central server to breach.

Who is Quantum Guard for?

Organizations and individuals protecting data with a long confidentiality lifespan: regulated records, protected intellectual property, executive and legal communications, and long-term archives.