Guides

QiSpace for IoT: A Quantum-Security SDK for Embedded Systems

A modular cryptographic toolkit for embedded development

As connected devices take on more mission-critical roles, the cryptography protecting their applications and data needs to be ready for the point at which classical encryption no longer holds. QiSpace for IoT is Quantropi’s software development kit for exactly that task: a complete set of cryptographic capabilities for hardening systems and applications across major embedded platforms.

Rather than a single fixed implementation, the SDK is supplied as a modular package, allowing development teams to add quantum security to embedded systems and applications selectively, according to where it is needed. The same SDK runs on both the host or server side and the IoT application side, securing the data exchanged between them.

What the toolkit provides

QiSpace for IoT brings together the three cryptographic building blocks required for end-to-end quantum security:

  • Asymmetric cryptography, providing post-quantum digital signature and key exchange functions
  • Symmetric cryptography, providing encryption and decryption
  • Strong random numbers, through both quantum (QRNG) and pseudo-quantum (pQRNG) random number generation

Together these cover the functions an embedded application typically needs to authenticate, encrypt and generate keys, without depending on the classical algorithms most exposed to future quantum attack.

Baseline and Premium packages

QiSpace for IoT is available in two packages:

  • The Baseline package provides NIST PQC standards, aligned to NIST FIPS 203 and 204.
  • The Premium package includes everything in Baseline and adds Quantropi’s novel PQC algorithms, its novel symmetric algorithm, and strong entropy generation.

This structure lets organisations begin with standards-based post-quantum cryptography and move to Quantropi’s higher-performance novel algorithms where the constraints of the target hardware justify it.

Performance built for constrained hardware

Quantropi positions its novel algorithms specifically for embedded use, citing figures measured at NIST security level 5:

  • HPPK-KEM, the novel key exchange, with a 64-byte ciphertext size and around 8K of memory utilisation
  • GHPPK-DS, the novel digital signature, with a 264-byte signature size and under 11K of memory utilisation

On devices where memory and bandwidth are tightly limited, footprints of this size are often what makes post-quantum security practical rather than prohibitive.

Broad platform support and a wider solution family

The SDK supports a wide range of chipsets from leading vendors, from high-performance parts down to ultra-low-power MCUs. Supported families include STMicroelectronics STM32 and the SPC5 and Stellar automotive lines, Renesas RA, RL, RX, RZ and RH850 automotive series, and Microchip PIC32, SAM and AVR32 parts, alongside legacy Arm and RISC-V processors. Further manufacturers and chipsets are available on request.

QiSpace for IoT also forms the base of a wider solution family. Secure Network and Secure Boot add-ons extend it, the former bringing quantum-secure TLS 1.3 to OpenSSL and Mbed TLS, the latter protecting the device boot process. Both are available across the same Dev, Standard and Enterprise tiers.

Download the guide

This guide sets out the QiSpace for IoT SDK, its cryptographic capabilities, packaging and supported platforms. Download your copy to assess how a modular quantum-security toolkit could be integrated into your embedded systems and applications.