DS2476 Deep Cover® Secure Processor

Analog Devices DS2476 Deep Cover® Secure Processor is a secure ECDSA and HMAC SHA-256 coprocessor companion to the DS28C36 Deep Cover Secure Authenticator. The Analog Devices Coprocessor can compute 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. In addition to the security services provided by the hardware-implemented crypto engines, the device integrates a FIPS/NIST true random number generator (RNG). The DS2476 also integrates 8Kb of secured EEPROM, a decrement-only counter, two pins of configurable GPIO, and a unique 64-bit ROM identification number (ROM ID). The ECC public/private key capabilities operate from the NIST-defined P-256 curve. These keys include FIPS 186-compliant ECDSA signature generation and verification to support a bidirectional asymmetric key authentication model. The SHA-256 secret-key capabilities comply with FIPS 180 and are flexibly used in conjunction with ECDSA operations or independently for multiple HMAC functions.