DS28E25+ by Analog Devices

DeepCover Secure Authenticator with 1-Wire SHA-256 and 4Kb User EEPROM

Status: Active
Series: DS28E25
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
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 Authenticator (DS28E25) 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 DS28E25. Slave-to-host authentication is used by a host system to securely validate that an attached or embedded DS28E25 is authentic. Hostto-slave authentication is used to protect DS28E25 user memory from being modified by a nonauthentic host. The SHA-256 message authentication code (MAC), which the DS28E25 generates, is computed from data in the user memory, an on-chip secret, a host random challenge, and the 64-bit ROM ID. The DS28E25 communicates over the single-contact 1-Wire® 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. Our Secure Drug Delivery video shows how Maxim security products can be used to authenticate remote drug delivery.

Where to Buy

Prices starting from US$2.44

Distributor Stock
Logo for Newark
Newark Electronics
from US$2.44
1,260
in stock
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Logo for element14 Singapore
element14
from US$2.63
1,260
in stock
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Logo for Farnell UK
Farnell
from US$2.44
1,260
in stock
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Features

Symmetric-Key-Based Bidirectional Secure Authentication Model Based on SHA-256
Dedicated Hardware-Accelerated SHA Engine for Generating SHA-256 MACs
Strong Authentication with a High Bit Count, User-Programmable Secret, and Input Challenge
4096 Bits of User EEPROM Partitioned Into 16 Pages of 256 Bits
User-Programmable and Irreversible EEPROM Protection Modes Including Authentication, Write and Read Protect, and OTP/EPROM Emulation
Unique, Factory-Programmed 64-Bit Identification Number
Single-Contact 1-Wire Interface Communicates with Host at Up to 76.9kbps
Operating Range: 3.3V ±10%, -40°C to +85°C
Low-Power 5µA (typ) Standby
±8kV HBM ESD Protection (typ)
2-Pin SFN, 2-Pin TO-92, 6-Pin TDFN, and 6-Pin TSOC Packages

Specifications

Crypto Engine Symmetric
End Equipment IP ProtectionMedical Consumable IDPCB ID and AuthenticationPrint Cartridge AuthenticationRack Card Security
Bus Type 1-Wire
Memory Type EEPROM
Memory Size 4K x 1
Deep Cover Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SFN/2TDFN/6TO92/2TO92/3TSOC/6
BudgetaryPrice (See Notes) 1.2

Last 6 months Inventory & Pricing History

DS28E25+ - Integrated Circuits by Analog Devices

DEEPCOVER SECURE AUTHENTICATOR TO-92-2

Semiconductors - ICs
> Special Function
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Function DeepCover Secure Authenticator
Supply Voltage Min 2.97V
Supply Voltage Max 3.63V
IC Package Type TO-92
No. of Pins 2Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Last 6 months Inventory & Pricing History

Alternative Descriptions

Secure Authenticator, 3.63V, To-92-2 | Newark Electronics
SECURE AUTHENTICATOR, 3.63V, TO-92-2 | element14

Frequently Asked Questions

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Is the DS28E25+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS28E25+ have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for DS28E25+ .

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