DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible. The DeepCover Secure Memory (DS28C22) combines crypto-strong, bidirectional, secure challenge-and-response authentication and small message encryption functionality with an implementation based on the FIPS 180-specified Secure Hash Algorithm (SHA-256). A 3Kb user-programmable EEPROM array provides nonvolatile storage for 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 and unalterable 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 and encryption between a host system and slave-embedded DS28C22. Slave-to-host authentication is used by a host system to securely validate that an attached or embedded DS28C22 is authentic. Host-to-slave authentication is used to protect DS28C22 user memory from being modified by a nonauthentic host. The SHA-256 message authentication code (MAC), which the DS28C22 generates, is computed from data in the user memory, an on-chip secret, a host random challenge, and the 64-bit ROM ID. The device also facilitates encrypted read and write between host and slave using a one time pad computed by the SHA-256 engine. When not in use, the DS28C22 can be put in sleep mode where power consumption is minimal.
|Part Number||Crypto Engine||Applications||Memory Type||Memory Size||Bus Type||VSUPPLY|
|Deep Cover||Oper. Temp.|
|EEPROM||3K x 1||I2C||2.97 to 3.63||Yes||-40 to +85|
|See All Secure Authenticators (28)|
| Pricing Notes: |
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C|
|User Guide||6136||MAXREFDES43# ZedBoard Quick Start Guide|
|App Note||5803||Secure Your FPGA System Using a DeepCover Secure Authenticator|
|App Note||5785||Implement Heightened Security with a SHA-256 Master/Slave Authentication System|