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)
