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32-bit MCUs With Embedded Security

Solutions for Securing Embedded Systems

With the rapid adoption of connected nodes and cloud-based infrastructures, the frequency of security threats is always increasing. Securing your embedded system is a necessity, but the solution you select will depend on the type of security you need, the cost of implementation, the level of risk tolerance and the ease of development.

Our 32-bit microcontrollers (MCUs) offer some of the most comprehensive and scalable security options available in the market today. They are supported by a comprehensive ecosystem of hardware, software, tools and functions to make it easy to implement effective protection for your embedded application.

Featured 32-bit MCUs for Security

PIC32CM LS60/PIC32CM LS00

Industry-Leading Security in Its Performance Class

Industry’s first Arm^® Cortex^®-M23-based MCU with a robust secure subsystem and Arm TrustZone technology integrated in a single package
Trust Platform key provisioning services
Support for multiple security functions including secure boot, secure key storage, secure firmware upgrade, hardware isolation, secure I/O, IP protection and tamper protection
Support for asymmetric and symmetric key cryptography
Support for DICE security standard
Protection against a wide class of known physical and remote attacks
Low-power and smart analog features

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SAM D5x/E5x

Mid-Performance MCU With Highly Integrated Security

Arm Cortex-M4F-based MCU with asymmetric and symmetric crypto accelerators
Public Key Cryptographic Controller (PUKCC) supporting RSA/ECC algorithms
Secure bootloader support
Integrity check monitors supporting Secure Hash Algorithms (SHA)
Excellent connectivity options including Ethernet and CAN FD

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CEC173x Trust Shield

Real-Time Platform Root of Trust Features for Upgraded Security

Arm Cortex-M4F 96 MHz embedded processor
NIST 800-193 platform firmware resiliency with fast CNSA secure boot and secure updates
Selection of new real-time security features including system bus protection, SPI monitoring and side-channel attack countermeasures
Life cycle management features including transfer of ownership, key revocation and code rollback
Hardware crypto accelerators that support symmetric key cryptography, asymmetric RSA and elliptic curve algorithms

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PIC32CZ CA90

High-Performance MCU With an Embedded Hardware Security Module (HSM)

Arm Cortex-M7-based MCU
Embedded HSM as a secure enclave
- Public key cryptography (ECC, RSA and DSA)
- Private key cryptography (AES with ECB, CBC, CFB, OFB, CTR, GCM, CCM, XTS and CMAC modes)
- HASH/MAC (MD-5, SHA-1, SHA-256, SHA-224, SHA-384, SHA-512 and SHA3 capability)
- True Random Number Generator (TRNG)
- Secure storage
A variety of connectivity options, including CAN FD and Gigabit Ethernet
Factory provisioning available

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PIC32A GC41

High-Performance MCU With Integrated Security Features

PIC32A MCUs include security features such as device locking and configurable Flash protection regions for Immutable Root of Trust (IRT) and access control. The hardware security features are excellent for use cases such as:

Secure boot and secure firmware update
Secure debug and disable entry into debug
Immutable Root of Trust (IRT)
Code protection
ICSP program/erase disable to configure the entire Flash as One-Time Programmable (OTP) memory
Firmware IP protection
Flash write protection

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Featured

SAML11-KPH MCU Is Both PSA and SESIP Certified

The SAML11-KPH with Kinibi-M™ v1.0 has been PSA and SESIP certified. This product offers a scalable security solution from secure boot to cloud onboarding to complete device lifecycle management.

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Security Resources for Your Design

Hardware

Security begins with hardware. Our 32-bit MCU security portfolio has integrated hardware-based security features. Hardware-based security is faster, has higher performance and is more secure than software-only solutions.

Diverse security features and functions can be combined to meet your application’s unique security needs
Our first low-power MCU that integrates our Trust Platform secure subsystem and Arm® TrustZone® technology in a single package
Industry’s first low-power MCU with Arm^® TrustZone^® technology for secured partitioning
MCUs can also be hardened with the addition of a secure element

Tools and Software

Jump-starting your design process with MPLAB^® Harmony, an award-winning embedded software framework for MIPS^® and Arm^® Cortex^®-M based 32-bit MCUs. We also provide comprehensive cryptographic/security software support across development platforms.

Flexible, modular and robust embedded development environment with extensive software support
Support for cryptographic algorithms, TLS/Wi-Fi^® stack fully integrated with hardware and demos for rapid prototyping

Third-Party Integration

Security measures can be further reinforced with third-party security software. We’ve worked with several third parties to provide easy-to-use security development options.

Arm TrustZone enablement software abstracts away complex security implementation and provides a simple smart user interface to securing embedded applications
Software supports secure key provisioning and life cycle management
Application Programing Interface (API) for common use cases like IP protection, cloud onboarding and anti-cloning

Security Functions

Our MCUs provide a variety of security functions that can be customized to meet a wide range of protection needs.

Function	Description
Symmetric Cryptography (Secret Key)	Symmetric-key algorithms use the same cryptographic keys for the encryption of plaintext and the decryption of ciphertext.
Asymmetric Cryptography (Public Key)	Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses pairs of keys: public keys that may be disseminated widely and private keys that are known only to the owner.
Integrity Check Monitors (Message Hash)	Message hashes transform variable-length data to a fixed-length piece of data. Integrity check monitors generate and validate message hash to preserve data integrity.
Hardware Root of Trust (Secure Boot)	Secure boot is implemented by an MCU that starts executing software from an internal, immutable memory (for example, ROM). The software stored in the MCU is considered inherently trusted (i.e., the root of trust) because it cannot be modified.
Secure Firmware Upgrade (Secure Bootloader)	A bootloader is a small section of code that is added to the main application stored in the Flash memory of the MCU. Its role is to load a new program at boot that provides the ability to download firmware upgrades. A secure bootloader is essential to protect IP and assets from remote attacks.
True Random Number Generator	This hardware-based random generator offers a higher source of entropy for the generation of keys used in cryptographic applications.
Tamper Detection	An MCU can be programmed to take appropriate defensive actions upon detecting any primarily physical attempts to compromise a device’s integrity or the data associated with the device.
Secure Key Storage	This feature protects nonvolatile and volatile keys from remote and physical attacks.
Key Provisioning	Secret identity data and cryptographic keys are injected in a secure environment to maintain the authenticity and integrity of an embedded application.
Hardware Isolation, IP Protection and TrustZone Technology	IP can be protected by hardware-enforced isolation between the trusted and the untrusted resources of an application.
Device Identifier Composition Engine (DICE)	DICE is a combination of hardware and software techniques for hardware-based cryptographic device identity, attestation and data encryption. It is an industry standard supported by Azure^® IoT and one of the foundational roots of trust in the Azure data centers of Microsoft^®.
Embedded Hardware Security Module (HSM)	The embedded HSM comes in the form of a secure enclave with cryptographic hardware acceleration, a true random number generator, dedicated memory, dedicated processor, and factory provisioning.