Product overview
Description
With the advent of quantum computers, traditional asymmetric cryptographic algorithms such as RSA, ECC, DH, ECDH, and ECDHE become vulnerable. In response, NIST has selected a new set of algorithms designed to be resistant to quantum computing attacks.
The STM32 post-quantum cryptographic library package (X-CUBE-PQC) includes all the major security algorithms for encryption, hashing, message authentication, and digital signing. This enables developers to satisfy application requirements for any combination of data integrity, confidentiality, identification/authentication, and nonrepudiation. It includes both the PQC Leighton-Micali signature (LMS) and the extented Merkle signature scheme (XMSS) verification methods, which are used mainly for secure boot code authentication. It also includes the ML-KEM lattice-based algorithm, which can replace the current use of key exchange mechanisms to establish a secret key between two parties. ML-DSA is included for digital signatures. ML-DSA can replace ECDSA, EdDSA, and RSA-PSS in protocols, for instance in high-level applications as a method of authentication, of attestation, or both.
The library includes firmware functions for the STM32H563xx microcontrollers, based on the Arm® Cortex®‑M33 processor, and all cryptographic functions of STMicroelectronics X-CUBE-CRYPTOLIB. For more details on PQC, refer to the STM32 introduction to PQC dedicated pages of the STM32 MCU wiki at wiki.st.com/stm32mcu.
PQC algorithms target the NIST cryptographic algorithm validation program (CAVP), helping customers to prove quickly and cost-effectively the security of their new products.
This package contains examples of LMS and XMSS signature verification using the STM32 cryptographic accelerator, ML-KEM functions (key generation, key encapsulation, key decapsulation), and ML-DSA functions (key generation, signature generation, signature verification). To benefit from all other cryptographic examples, refer to the X-CUBE-CRYPTOLIB Expansion Package.
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All features
- X-CUBE-CRYPTOLIB security algorithms
- Cipher encryption and decryption
- Digest generation
- Message authentication code (MAC) generation
- Elliptic curves key generation, signature, and verification
- Elliptic curves Diffie-Hellman key exchange
- RSA signature, verification, encryption, and decryption
- Deterministic random bit generator (DRGB)
- PQC public key cryptography
- Stateful hash-based signatures (HBS):
- LMS digital signature verification
- XMSS digital signature verification
- Lattice-based algorithm (ML):
- ML-DSA digital signature verification and generation, key generation
- ML-KEM key encapsulation and decapsulation, key generation
- Stateful hash-based signatures (HBS):
- X-CUBE-CRYPTOLIB security algorithms
Get Software
| Part Number | General Description | Latest version | Supplier | ECCN (EU) | ECCN (US) | Download | All versions |
|---|---|---|---|---|---|---|---|
| X-CUBE-PQC | STM32 Post Quantum Cryptographic firmware library software expansion for STM32Cube | 1.1.0 | ST | NEC | 5D992.c | x License Agreement Please indicate your acceptance or NON-acceptance by selecting “I ACCEPT” or “I DO NOT ACCEPT” as indicated below in the media. BY INSTALLING COPYING, DOWNLOADING, ACCESSING OR OTHERWISE USING THIS SOFTWARE PACKAGE OR ANY PART THEREOF (AND THE RELATED DOCUMENTATION) FROM STMICROELECTRONICS INTERNATIONAL N.V, SWISS BRANCH AND/OR ITS AFFILIATED COMPANIES (STMICROELECTRONICS), THE RECIPIENT, ON BEHALF OF HIMSELF OR HERSELF, OR ON BEHALF OF ANY ENTITY BY WHICH SUCH RECIPIENT IS EMPLOYED AND/OR ENGAGED AGREES TO BE BOUND BY THIS SOFTWARE PACKAGE LICENSE AGREEMENT. Under STMicroelectronics’ intellectual property rights and subject to applicable licensing terms for any third-party software incorporated in this software package and applicable Open Source Terms (as defined here below), the redistribution, reproduction and use in source and binary forms of the software package or any part thereof, with or without modification, are permitted provided that the following conditions are met:
THIS SOFTWARE PACKAGE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. EXCEPT AS EXPRESSLY PERMITTED HEREUNDER AND SUBJECT TO THE APPLICABLE LICENSING TERMS FOR ANY THIRD-PARTY SOFTWARE INCORPORATED IN THE SOFTWARE PACKAGE AND OPEN SOURCE TERMS AS APPLICABLE, NO LICENSE OR OTHER RIGHTS, WHETHER EXPRESS OR IMPLIED, ARE GRANTED UNDER ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF STMICROELECTRONICS OR ANY THIRD PARTY. |
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All resources
| Resource title | Version | Latest update |
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Product Specifications (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.0 | 30 Jun 2025 | 30 Jun 2025 |
User Manuals (3)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 5.0 | 24 Jun 2022 | 24 Jun 2022 | ||
| 2.0 | 10 Sep 2020 | 10 Sep 2020 | ||
| 2.0 | 10 Jan 2023 | 10 Jan 2023 |
Presentations (3)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 10 Aug 2022 | 10 Aug 2022 | ||
| 1.0 | 21 Mar 2024 | 21 Mar 2024 | ||
| 1.0 | 10 Aug 2022 | 10 Aug 2022 |
License Agreement (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 7.0 | 08 Jul 2024 | 08 Jul 2024 |
Additional License Terms (2)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| HTML | 1.1.0 | 04 Jul 2025 | 04 Jul 2025 | |
| HTML | 1.0.0 | 07 Mar 2025 | 07 Mar 2025 |