STMicroelectronics X-CUBE-SBSFU v.2.0 STM32 microcontroller expansion software

Friday, 11 May, 2018 | Supplied by: STMicroelectronics Pty Ltd

Security expansion sw for stm32 image

Consolidating secure boot, secure firmware update and secure-engine services in a convenient STM32Cube expansion software package, X-CUBE-SBSFU v.2.0 from STMicroelectronics helps product developers fully utilise the security features of STM32 microcontrollers to protect connected devices like IoT endpoints and help manage their life cycle.

By establishing a root of trust in the microcontroller, X-CUBE-SBSFU Secure Boot enables protection of intellectual property. Secure Boot checks and activates the STM32’s built-in security mechanisms, and checks the authenticity and integrity of user application code before every execution to prevent invalid or malicious code from running. The trusted device can then safely take part in mutual authentication when connecting remotely to a network, in accordance with well-known security best practices.

The secure firmware-update functionality aids lifetime device management — applying fixes, functional upgrades and security updates to cover the latest cyber threats — by handling secure loading and safe programming of firmware. The secure loader supports multiple recognised digital-signature (ECDSA or AES methods) and cryptography (AES-GCM) algorithms to receive, authenticate and decrypt the encrypted firmware image, and check the integrity of the code. The safe programming supports both single-image update for maximum user-application size and dual-image update giving extra flexibility to support anti-rollback during image installation and over-the-air (OTA) firmware download.

In addition, secure-engine services maintain a protected environment for storing critical data such as cryptographic keys and executing cryptographic algorithms, thus completing a comprehensive package for protecting connected devices and securing IoT networks.

The expansion software package is delivered as a free-of-charge reference library and comes with technical literature to aid implementation of best-in-class protection demonstrating STM32L4 and STM32L4+ security features. Built on ST’s STM32Cube software technology, it will simplify portability throughout the extensive STM32 family that comprises over 800 devices.

For more information:

Phone: 02 8338 1172
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