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, IoT (Internet of Things) devices, smart-home, smart-city and industrial applications, and consumer electronics devices.

• • 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
• Cryptography and security features
  • Advanced asymmetric cryptography
    • 5 Elliptic curve crytpography (ECC), nonvolatile private key slots + 1 ephemeral ECC key slot
    • Supported elliptic curves:
    • NIST P-256 P-384, P-521
    • Brainpool P-256 P-384, P-512
    • Edwards 25519
    • Curve25519
  • Supported functionalities:
    • Digital signature generation and verification (ECDSA and EdDSA)
    • Diffie-Hellman shared secret establishment (ECDH)
  • Advanced symmetric cryptography
    • 16 slots of symmetric cryptography with AES-128/256 CCM*, ECB, GCM, CMAC, and HKDF
  • Pairing with host-applicative processor
    • AES 128-bit or 256-bit
  • Local wrap/unwrap envelop key
    • 2 slots of keys with AES 128-bit or AES 256-bit
  • Data hashing
    • SHA-2 with SHA-256, SHA-384, SHA-512
    • SHA-3 with SHA3-256, SHA3-384, SHA3-512
  • Random number generator
    • Random number generator with NIST SP 800-90B compliant entropy source
  • Latest generation of highly secure MCUs
    • Unique serial number on each die
    • CC EAL5+ AVA_VAN.5, and ALC_DVS.2 Common Criteria certified
    • Active shield
    • Monitoring of environmental parameters
    • Protection mechanism against fault injection
    • Protection against side-channel attacks
• Hardware characteristics
  • 16 Kbytes of configurable nonvolatile memory
    • 25 years of data retention at 25°C
    • 500 000 erase/write cycle endurance at 25°C
    
    
  • 2.7 V to 5.5 V continuous supply voltages
  • Operating temperature: -40°C to +105°C
• Communication protocol
  • I²C - bus slave interface
    • Up to 400 kbps transmission speed (Fast mode)
    • 7-bit addressing
    
    
• Packages
  • ECOPACK-compliant SO8N 8-lead plastic small outline package and UFDFPN 8-lead ultrathin profile fine pitch dual flat package.