DX81C04-C

DX81 family is a secure EEPROM memory with high-security hardware authentication devices. It has a simple and flexible command set that allows use for many applications. DX81 family devices mainly have the following functions: Validate that a removable, replaceable, or consumable Client is authentic. Example Clients could be printer ink tanks, electronic daughter cards, or other spare parts. It can also be used to validate a software/firmware module or memory storage element. Validate user entered passwords without letting the expected value become known, authenticate the access privilege for security memory. Device can store small quantities of data necessary for configuration, calibration, sensitive value, consumption data, or other secrets. It has programmable protection through encrypted/authenticated mode to read and write. Also you can permanently lock data prevented from modification. All DX81 family devices include an EEPROM array that can be used for storage keys, miscellaneous read/write, read-only or secret data, consumption logging and security configuration. Access to the various zones of memory can be restricted in a programmable security accessing mode and the configuration then locked or prevented changes. Access to the device is through a standard I2C interface at speeds up to 1Mbps or SPI interface speeds up to 10Mbps, compatible with I2C/SPI interface specifications. Each DX81 device ships with a guaranteed unique 8-bytes serial number, additional 7-bytes User ID can be set for the third party. Using the cryptographic protocols supported by the device, a Host system or remote server can prove that the SN and UID are both authentic and is not a copy. The unique ROM SN and User defined UID are used as a fundamental input parameter for cryptographic operations. Also each DX81 device ships with an initial PIN code, which can be used for DX81 configuration. Only the PIN authenticated, then you can personalize the DX81 device. DX81 family devices can generate high-quality random numbers and employ them for any purpose, including as part of the crypto protocols of this device. And there are 128 bits key length KEYA for host anti-clone authentication and 4 - 16 Zone Keys for user memory accessing authentication or user password checking. DX81 combines crypto-strong bidirectional secure challenge-and-responses authentication functional with an implementation using the industry-standard SHA - 1 secure hash algorithm. A bidirectional security model enables tow-way authentication between a host system and slave-embedded DX81. Slave-to-host authentication is used by a host system to securely validate that attached or embedded DX81 is authentic. Host-to-slave authentication is used to protect DX81 user memory from being modified by a non-authentic host.

Applications

• Anti-Clone protection for accessories, peripherals and consumables
• Electronic device management of OEM/Post-sale Service/Authorization
• Secure parameter/data storing
• User Password Checking
• Software anti-piracy
• PCB ID and Authentication
• Print-Cartridge ID
• Medical Consumable ID
• STB, GPS, web camera system

Key features

• A family of 9 devices with Security User EEPROM Memory from 1Kbits to 256Kbits
• Secure authentication and validation device
• I2C Interface --- 1.0 MHz Compatibility for Fast Operation --- Same Pinout as 2-wire (24 Series) Serial EEPROM’s
• SPI Interface --- Compatibility for SPI Standard Protocol (Mode0 and 3) --- Max Speed up to 10MHz --- Same Pinout as 4-wire (25 Series) EEPROM’s
• Configuration Memory --- Guaranteed Unique 64bits Serial Number in wafer manufacture --- 7-bytes OTP Area for User definable ID --- 64 bits User PIN authentication for memory configured
• EEPROM User Memory --- Divided into 4 -- 16 User Zones --- Read only mode can be individually set for each zone --- PGO (program only) mode can be individually set for each zone --- Programmable Access Mode for each zone read/write Normal mode Authentication mode Encryption mode --- 4 -- 16 individual 128 bits length Keys for each zone --- Individual bi-directional authentication for accessing each zone --- Single-Byte, Multiple-Byte or Page-Write Modes --- Self-timed Write Cycles
• Host Anti-Clone Authentication --- Superior SHA1 Hash Algorithm with MAC and HMAC options --- 128 bits Key length for authentication --- Each time random response even for the same challenge
• High security features in hardware --- Stream Encryption and CRC checking for Data transmission on Data Line Avoid capturing the real data on Data Line --- EEPROM Physical address Scramble with SN involved --- EEPROM Physical Data Encryption with SN involved Storing the same data in each device has different physical address and data. Prevent EEPROM Data from physically copying between devices.
• Internal and High-quality True Random Number Generator
• Internal POR and High-accuracy Oscillator
• Voltage Monitor
• High reliability --- Endurance: >1M Cycles --- Data Retention: >10 years --- ESD Protection: >4KV
• Development Kits --- Evaluation Board Kits --- Customized Library and SDK for Android and iOS --- Secure Personalization device and software