描述 Description

Fast, Secure, and Cost Effective Symmetric Authentication

The Microchip SHA-based CryptoAuthentication crypto element devices have been architected to provide flexible user-configured security to enable a wide range of authentication models.As with all CryptoAuthentication devices part of the Trust Platform, the ATSHA204A TrustCUSTOM is a companion device available in low minimum orderable quantities including Microchip secure key provisioning service down to 4000 units.?Secure Hash Algorithm (SHA) algorithms are widely used in most cryptographic systems and remain an important component in most modern authentication protocols. These devices support the SHA-256 standard. The ATSHA204A-TCSM is the most cost-effective solution in the Microchip CryptoAuthentication portfolio. It integrates the SHA-256 hash algorithm with a 4.5Kb EEPROM and provides robust hardware authentication using secure key/data storage. The tiny packaging and a single-wire interface make the device ideal for handheld electronic systems and any space-constrained embedded system.CryptoAuthentication devices in the SHA mode include client and host security capabilities that offload key storage and algorithm execution from the microcontroller, significantly reducing system cost and complexity. SHA based symmetric authentication is fast relative to asymmetric approaches, making the ATSHA204A a good choice with speed (and/or cost) are important considerations. CryptoAuthentication devices have full metal shields over all of the internal circuitry, so that if an attacker cuts or short circuits any trace in the shield, the product stops functioning. Additional security features include internal clocks and voltage generation, encrypted memories, tamper detection, and fully secure production test methodologies. With the ATSHA204A-TCSM implementing host-side security to provide a full system solution is now easier than ever.

The Microchip'sATSHA204A-TCSM is a full turnkey security device. It includes a 4.5Kb EEPROM divided into 16 slots. This array can be used for storage of keys, miscellaneous read/write, read-only, password or secret data, and consumption tracking. Access to the various sections of memory can be restricted in a variety of ways and then the configuration locked to prevent changes.

Access to the chip is through a standard I2C interface at speeds up to 1Mb/sec. The chip also supports a single-wire interface that can reduce the number of GPIOs required on the system processor and/or reduce the number of pins on connectors. It is compatible with most UART or serial I/O controllers. System integration is eased with a wide supply voltage range and an ultra-low sleep current of less than 100nA.

特性 Features

?
Cost-effective Symmetric Authentication Solution
Fast Authentication
Easy Key Management
Best suited for counterfeit prevention
? Crypto Element with Protected Hardware-based Key Storage
? Secure Symmetric Authentication Device Host and Client Operations
? Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC)and Hash-Based Message Authentication Code (HMAC) Options ? Best-in-class, 256-bit Key Length; Storage for Up to 16 Keys? Guaranteed Unique 72-bit Serial Number? Internal, High-quality Random Number Generator (RNG)? 4.5Kb EEPROM for Keys and Data
512 bit OTP (One Time Programmable) Bits for Fixed Information ? Multiple I/O Options?
UART-compatible High-Speed, Single-Wire Interface
1MHz I2C Interface
? 2.0V to 5.5V Supply Voltage Range
? 1.8V to 5.5V Communications Voltage Range ? <150nA Sleep Current
Secure Download and Boot Ecosystem Control
Message Security
MoQ of 4000 units including secure key provisioning serviceAnti-Cloning

? Cost-effective Symmetric Authentication Solution
? Fast Authentication
? Easy Key Management
? Best suited for counterfeit prevention
? ? Crypto Element with Protected Hardware-based Key Storage
? ? Secure Symmetric Authentication Device Host and Client Operations
? ? Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC)
? and Hash-Based Message Authentication Code (HMAC) Options ? Best-in-class, 256-bit Key Length; Storage for Up to 16 Keys
? ? Guaranteed Unique 72-bit Serial Number
? ? Internal, High-quality Random Number Generator (RNG)? 4.5Kb EEPROM for Keys and Data512 bit OTP (One Time Programmable) Bits for Fixed Information ? Multiple I/O Options?UART-compatible High-Speed, Single-Wire Interface1MHz I2C Interface? 2.0V to 5.5V Supply Voltage Range? 1.8V to 5.5V Communications Voltage Range ? ? Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC)
and Hash-Based Message Authentication Code (HMAC) Options ? Best-in-class, 256-bit Key Length; Storage for Up to 16 Keys
? Guaranteed Unique 72-bit Serial Number
? Internal, High-quality Random Number Generator (RNG)
? ? 4.5Kb EEPROM for Keys and Data
? 512 bit OTP (One Time Programmable) Bits for Fixed Information ? Multiple I/O Options?
? UART-compatible High-Speed, Single-Wire Interface
? 1MHz I2C Interface
? ? 2.0V to 5.5V Supply Voltage Range
? ? 1.8V to 5.5V Communications Voltage Range ? MoQ of 4000 units including secure key provisioning service
? Anti-Cloning

簡介

ATSHA204A-TCSM屬于集成電路（IC）的專用IC。由制造生產(chǎn)的ATSHA204A-TCSM專用 IC專用專用集成電路 (IC) 或芯片設(shè)計用于執(zhí)行特定功能。這個類別包括可尋址開關(guān)、空芯儀表驅(qū)動器、音視頻開關(guān)、驗證芯片、自動放電、時鐘發(fā)生器、彩色掃描儀，以及各種應(yīng)用所用的其他許多集成電路。