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 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 SO8N 4 × 5 mm UFDFPN8 2 × 3 mm Product status STSAFE-A120 Secure authentication companion device for consumables, accessories, and connected objects STSAFE-A120 Datasheet DS14609 - Rev 1 - April 2024 For further information contact your local STMicroelectronics sales office.