DS28EL22 Datasheet PDF | Maxim Integrated

Maxim Integrated DS28EL22

the DS28EL22 generates, is computed from data in the user memory, an onchip secret, a host random challenge, and the 64-bit ROM ID. The DS28EL22 communicates over the single-contact 1-WireM bus at overdrive speed. The communication follows the 1-Wire protocol with the ROM ID acting as node address in the case of a multiple-device 1-Wire network.

Part No.	DS28EL22
Datasheet	DS28EL22 Download
Manufacturer	Maxim Integrated
Description	DeepCover Secure Authenticator
Buy	Stock & Price

GENERAL DESCRIPTION

DeepCoverM embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible. The DeepCover Secure Authenticator (DS28EL22) combines crypto-strong, bidirectional, secure challenge-and-response authentication functionality with an implementation based on the FIPS 180-3-specified Secure Hash Algorithm (SHA-256). A 2Kb user-programmable EEPROM array provides nonvolatile storage of application data and additional protected memory holds a read-protected secret for SHA-256 operations and settings for user memory control. Each device has its own guaranteed unique 64-bit ROM identification number (ROM ID) that is factory programmed into the chip. This unique ROM ID is used as a fundamental input parameter for cryptographic operations and also serves as an electronic serial number within the application. A bidirectional security model enables two-way authentication between a host system and slave-embedded DS28EL22.