Product Overview

The CryptoCompanion™ Chipis designed to complement Atmel’s CryptoRF® and CryptoMemory®chips, collectively referred to in the remainder of this document as CRF. CryptoCompanion makes extensive use of the SHA-1 hashalgorithmas specified  in http://www.itl.nist.gov/fipspubs/fip180-1.htm and else where. In this document, the nomenclature SHA-1(a,b, c) means to concatenatea, b & c in that orderand then pad them to a block size of 64 bytes before computing the digest. CryptoCompanion generates SHA-1 digests of single round datasets at a time.

Features

Companion Chip to CryptoRF and CryptoMemory

─ Securelyimplements host algorithms

─ Securelystores host secrets

─ Verifies Host Firmware Digests

High Security Features in Hardware

─ CryptoMemoryand CryptoRFF2Algorithm CryptoCompanion Chip

─ SHA-1 Standard CryptographicAlgorithm

─ 64-bit Mutual Authentication Protocol (Under License of ELVA)

─ PermanentlyCoded SerialNumbers

─ High Quality Random NumberGenerator (RNG)

─ Metal Shield Over Memory

─ Data Scrambling in Nonvolatile Memory

─ DelayPenalties to prevent Systematic Attacks

─ Reset Locking to prevent Illegal Power Cycling

─ Voltage and Frequency Monitors

Host-side Crypto Functions

─Authentication Challenge Generation

─ Device Challenge Response

─ MessageAuthentication Codes (MAC) Generation

─ Data Encryptionand Decryption

─ Secure Authentication Key Management

Secure Storageand Key Management

─ Up to 16 sets of 64-bits Diversified Host Keys

─ Eight Sets of Two 24-bit Passwords

─ Secure and Custom Personalization

─ Up to 232-ByteRead/Write Configurable User Data Area

Nonvolatile Up Counters

─ Four sets Unidirectional Counters

─ 64 Million Maximum Counts Per Counter

Application Features

─ LowVoltage Operation: 2.7V – 3.3V

─ 2-Wire Serial Interface

─ 1.0 MHz Compatibilityfor FastOperation

─ Standard 8-leadPlastic Packages

High Reliability

─ Endurance  : 100,000 Cycles

─ Data Retention : 10 years

─ ESD Protection : 3,000 min