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

See also
 * CryptoCape for BeagleBone