DeepCover Secure Authenticator
ABRIDGED DATA SHEET
Evaluation Kit Available
Design Resources
Tools and Models
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Description
ABRIDGED DATA SHEET
Evaluation Kit Available
Design Resources
Tools and Models
Support
Click here to ask an associate for production status of specific part numbers.
DeepCover Secure Authenticator with 1-Wire SHA-256 with 4Kb User EEPROM
DS28EL25
General Description
DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the industry’s most secure key storage possible. The Deepcover Secure Authenticator (DS28EL25) combines crypto-strong, bidirectional, secure challengeand-response authentication functionality with an implementation based on the FIPS 180-3-specified Secure Hash Algorithm (SHA-256). A 4Kb user-programmable EEPROM array provides nonvolatile storage of application data and additional protected memory holds a readprotected 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 DS28EL25. Slave-to-host authentication is used by a host system to securely validate that an attached or embedded DS28EL25 is authentic. Hostto-slave authentication is used to protect DS28EL25 user memory from being modifie...
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