Datasheet > DS28E25

DS28E25

更新时间： 2023-12-20 18:45:23

品牌	Logo	应用领域
亚德诺 - ADI		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
6页	718K
描述
内置1-Wire SHA-256和4Kb用户EEPROM的DeepCover安全认证方案

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中文翻译

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DS28E25 数据手册

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 and 4Kb User EEPROM

DS28E25

General Description

DeepCover™ embedded security solutions cloak sensi-

tive data under multiple layers of advanced physical

security to provide the most secure key storage possible.

Features

● Symmetric Key-Based Bidirectional Secure

Authentication Model Based on SHA-256

● Dedicated Hardware-Accelerated SHA Engine for

The DeepCover Secure Authenticator (DS28E25) com-

bines crypto-strong, bidirectional, secure challenge-

and-response authentication functionality with an imple-

mentation based on the FIPS 180-3-specified Secure

Hash Algorithm (SHA-256). A 4Kb user-programmable

EEPROM array provides nonvolatile storage of applica-

tion 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 num-

ber within the application. A bidirectional security model

enables two-way authentication between a host system

and slave-embedded DS28E25. Slave-to-host authenti-

cation is used by a host system to securely validate that

an attached or embedded DS28E25 is authentic. Host-

to-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

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 Human Body Model ESD Protection (typ)

● 2-Pin SFN, 2-Pin TO-92, 6-Pin TDFN, and 6-Pin

TSOC Packages

Typical Application Circuit

single-contact 1-Wire bus at overdrive speed. The com-

= 1.1kΩ

munication follows the 1-Wire protocol with the ROM ID

acting as node address in the case of a multiple-device

1-Wire network.

MAXIMUM I C BUS CAPACITANCE 320pF

SDA

SCL

(I C PORT)

DS2465

µC

1-Wire LINE

Applications

SLPZ

● Authentication of Network-Attached Appliances

● Printer Cartridge ID/Authentication

DS28E25

● Reference Design License Management

● System Intellectual Property Protection

● Sensor/Accessory Authentication and Calibration

● Secure Feature Setting for Conﬁgurable Systems

● Key Generation and Exchange for Cryptographic

Systems

Ordering Information appears at end of data sheet.

DeepCover is a trademark and 1-Wire is a registered trademark of Maxim Integrated Products, Inc.

219-0019; Rev 4; 6/21

One Analog Way, Wilmington, MA 01887 U.S.A.

Tel: 781.329.4700

12 3 4 5 6

中文翻译

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与DS28E25相关器件

型号	品牌	获取价格	描述	数据表
DS28E25_V01	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire SHA-256 and 4Kb User EEPROM
DS28E25G+T	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 4Kb User EEPROM
DS28E25P+	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 4Kb User EEPROM
DS28E25P+T	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 4Kb User EEPROM
DS28E25Q+T	MAXIM	获取价格	1-Wire SHA-256 Secure Authenticator with 4Kb User EEPROM
DS28E30	ADI	获取价格	1-Wire ECDSA Secure Authenticator
DS28E35	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM
DS28E35	ADI	获取价格	DeepCover 1-Wire ECDSA认证器，带有1Kb用户EEPROM
DS28E35_V01	MAXIM	获取价格	DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM
DS28E35P+	MAXIM	获取价格	EEPROM, 1KX1, Serial, CMOS, PDSO6, ROHS COMPLIANT, TSOC-6

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