Product Overview

The CryptoCompanion™ Chip is designed as the mate to 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 hash algorithm as specified in

http://www.itl.nist.gov/fipspubs/fip180-1.htm and elsewhere. In this document, the nomenclature SHA-1(a, b, c) means to concatenate a, b & c in that order and 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®

   - Securely implements host algorithms

   - Securely stores host secrets

   - Verifies Host Firmware Digests

• High Security Features in Hardware

   - CryptoMemory and CryptoRF F2 Algorithm

   - SHA-1 Standard Cryptographic Algorithm

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

   - Permanently Coded Serial Numbers

   - High Quality Random Number Generator (RNG)

   - Metal Shield Over Memory

   - Data Scrambling in Nonvolatile Memory

   - Delay Penalties 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

   - Message Authentication Codes (MAC) Generation

   - Data Encryption and Decryption

   - Secure Authentication Key Management

• Secure Storage and 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-Byte Read/Write Configurable User Data Area

• Nonvolatile Up Counters

   - Four sets Unidirectional Counters

   - 6.4 Million Maximum Counts Per Counter

• Application Features

   - Low Voltage Supply: 2.7V – 3.6V

   - 2-Wire Serial Interface (TWI, 5V Compatible)

   - Standard 8-lead SOIC Plastic Package, Green compliant (exceeds RoHS)

• High Reliability

   - Endurance : 100,000 Cycles

   - Data Retention : 10 years

   - ESD Protection : 3,000 V min. HBM