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STMicroelectronics
STSAFE-A120 - Secure Authentication MCUs
STSAFE-A120
Secure authentication companion device for consumables, accessories, and connected objects

Product Introduction
The STSAFE-A120 is a secure element, providing authentication and secure data management services to a local or remote host. It also provides cryptographic services like hashing, encryption, and decryption. It consists of a full turnkey solution with a secure operating system running on the latest generation of secure microcontrollers.The STSAFE-A120 can be integrated in consumables, accessories, Internet of Things (IoT) devices, smart-home, smart-city and industrial applications, and consumer electronics devices.
Designed for Industrial Applications
- Home, building and city automation: smart lock and access
- Medical and healthcare: vital signs monitoring
- Power supplies and converters: NFC wireless charging
Key Features
- Unique ID
- Authentication for:
- Consumables and accessories anticloning
- Connected objects secure connection and preattachment to clouds (Azure, AWS, and others)
- Wireless chargers Qi 1.3 and Qi 2.0
- Matter devices
- Digital power supplies OCP M-CRPS
- Pairing and secure channel with host application processor
- Configurable secure storage
- Usage monitoring with secure counters
- Secure connection establishment with remote host including transport layer security (TLS 1.2 and TLS 1.3) handshake
- Signature verification service (secure boot and firmware upgrade)
- Secure storage in host nonvolatile memory based on wrapping and unwrapping of local host envelopes
- Data hashing
- Symmetric data encryption or decryption
- On-chip key pair generation
*STMicroelectronics Authorized Distributor


