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