Provides Affordable Elliptic-Curve Public-Key Authentication Security to Protect Your Development Investment
The DS2476 is a secure ECDSA and HMAC SHA-256 coprocessor companion to the DS28C36. The 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), 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 and include FIPS 186 compliant ECDSA signature generation and verification to support a bidirectional asymmetric key authentication model. The SHA-256 secret-key capabilities are compliant with FIPS 180 and are flexibly used either in conjunction with ECDSA operations or independently for multiple HMAC functions. Two GPIO pins can be independently operated under command control and include configurability supporting authenticated and nonauthenticated operation including an ECDSA-based crypto-robust mode to support secure-boot of a host processor. This secure boot method can also be used to enable the coprocessor functions. DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced security to provide the most secure key storage possible. To protect against device-level security attacks, invasive and noninvasive countermeasures are implemented including active die shield, encrypted storage of keys, and algorithmic methods.
title | Download file |
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DS2476 Data Sheet | DS2476.pdf |
Part Number | Applications | Memory Type | Memory Size | Bus Type | VSUPPLY (V) | Deep Cover | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
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See Notes | |||||||||
DS2476 | IP Protection Medical Consumable ID Medical Sensor Authentication and Calibration PCB ID and Authentication Print Cartridge Authentication Printer Cartridge Configuration and Monitoring Secure Access Control | EEPROM | 4K x 1 | I2C | 2.97 to 3.63 | Yes | -40 to +85 | TDFN-EP/6 | $1.08 @1k |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
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DS2476Q+T | Active | TDFN-EP,;6 pin;9.6 mm² | 0°C to +70°C | Lead Free | |
DS2476Q+U | Active | TDFN-EP,;6 pin;9.6 mm² | 0°C to +70°C | Lead Free |