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Endpoint encryption

Hardware-accelerated full-volume encryption driver

An endpoint-encryption vendor needed a Windows full-volume encryption driver for enterprise-wide deployments that used hardware encryption while coexisting with boot flows, BitLocker, RAID, removable media, and strict performance targets.

Platforms

  • Windows

Services

  • Storage driver development
  • Encryption architecture
  • Boot path integration
  • Performance engineering

The challenge

Full-volume encryption touches the storage path at the worst possible places: boot, hibernation, removable media, RAID, multi-boot, and recovery. The product also had hard performance budgets because users notice slow boot and degraded disk throughput immediately.

What we built

We built a Windows storage stack driver for transparent live encryption and decryption of primary and secondary drives. The architecture supported partition-level keys and hardware crypto offload.

The implementation accounted for boot loader and early kernel interaction, hibernation, BitLocker coexistence, removable media, RAID 0, RAID 1, RAID 10, and common external buses such as USB, 1394, eSATA, PCMCIA, and PCIe.

Performance was designed into the data path instead of treated as a late optimization pass. The driver had to stay within tight boot and steady-state throughput budgets.

Project outcome

  • Delivered a Windows full-volume encryption driver with hardware crypto offload and partition-level keys for enterprise endpoint protection.
  • Handled the cases that break encryption products — boot, hibernation, BitLocker coexistence, RAID 0/1/10, removable media, and buses from USB to PCIe.
  • Designed performance into the data path so the driver met the customer's defined boot and steady-state throughput budgets — the slowdowns users would otherwise notice immediately.

Technical takeaway

Encryption in the storage path is not just cryptography. The real engineering risk is every state transition around boot, hibernate, removable media, and recovery.

Working on something similar?

If your team is building in this area — a driver, kernel module, packet path, file system filter, security sensor, or certification plan — start with a technical conversation, not a sales call. Contact Joya Systems and describe the product, platform, and current state of the code.

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Frequently asked questions

What are the hardest parts of building a full-volume encryption driver?

Not the cryptography — it is the state transitions. Boot loader and early-kernel interaction, hibernation, removable media, RAID, multi-boot, and recovery all touch the storage path, and each is a place where data can be lost. Tight boot and throughput budgets make it harder still, which is why we designed performance in from the start.

Can full-volume encryption coexist with BitLocker and RAID?

Yes. The driver was built for BitLocker coexistence and RAID 0, 1, and 10, with transparent live encryption of primary and secondary drives, partition-level keys, and support for external buses including USB, 1394, eSATA, PCMCIA, and PCIe.

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