Crypto Shield

The CryptoShield is design to work with not only the Arduino ecosystem but with embedded Linux boards that support the Arduino shield form-factor. The CryptoShield is 3.3V and 5V friendly. It covers secure components such as

• Maxim Integrated DS3231M Real Time Clock
• Atmel AT97SC3204T Trusted Platform Module (performs RSA encryption, decryption, and signing in the hardware)
• ATAES132 EEPROM (AES encrypted EEPROM that can store up to 32Kb of data)
• ATSHA204 (authentication chip that performs SHA-256 and HMAC-256)
• Atmel ATECC108 (performs the Elliptic Curve Digital Signature Algorithm (ECDSA) on the chip. This is an authentication chip, like the ATSHA204.)
• RFID Socket

Docs:

• https://www.sparkfun.com/products/13183
• https://learn.sparkfun.com/tutorials/crypto-shield-hookup-guide
• A Practical Guide to Trusted Computing, David Challener, Kent Yoder, Ryan Catherman, & al, January 2008