DS2476 Overview
The DS2476 is a DeepCover® secure ECDSA and HMAC SHA-256 coprocessor panion to the DS28C36. The coprocessor can pute any required HMACs or ECDSA signatures to do any operation on the DS28C36. The DS2476 provides a core set of cryptographic tools derived from integrated asymmetric (ECC-P256) and symmetric (SHA-256) security functions.
DS2476 Key Features
- ECC-256 pute Engine
- FIPS 186 ECDSA P256 Signature and Verification
- ECDH Key Exchange with Authentication Prevents Man-in-the-Middle Attacks
- ECDSA Authenticated R/W of Configurable Memory
- FIPS 180 SHA-256 pute Engine
- SHA-256 OTP (One-Time Pad) Encrypted R/W of Configurable Memory Through ECDH Established Key
- Two GPIO Pins with Optional Authentication Control
- Open-Drain, 4mA/0.4V
- Optional SHA-256 or ECDSA Authenticated On/Off and State Read
- Optional ECDSA Certificate to Set On/Off after Multiblock Hash for Secure Boot
DS2476 Applications
- IoT Node Crypto-Protection -- Accessory and Peripheral Secure Authentication -- Secure Storage of Cryptographic Keys for a Host Controller -- Secure Boot or Dow