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