The CryptoCape extends the hardware cryptographic abilities of the BeagleBone Black.
With the insecurity of connected devices called into question time and time again, wouldn’t it be nice to take comfort in knowing that your latest IoT gadget was secure? A facet in which many Makers may overlook, Josh Datko recently sought out to find a better way to safeguard those designs, all without hindering the DIY spirit. The result? The CrytpoCape — which initially debuted on SparkFun last year — is a dedicated security daughterboard for the BeagleBone that easily adds encryption and authentication options to a project.
Generally speaking, cryptography offers a solution to a wide-range of problems such as authentication, confidentiality, integrity and non-repudiation, according to Datko. SparkFun notes that the $60 Atmel powered cape adds specialized ICs that perform various cryptographic operations, amplifying a critical hardware security layer to various BeagleBone projects.
The CyrptoCape is packed with hardware, including 256k EEPROM with a defaulted I2C address (plus write protection), a real-time clock (RTC) module, a Trusted Platform Module (TPM) for RSA encryption/decryption, an AES-128 encrypted EEPROM, an ATSHA204 CrypoAuthentication chip that performs SHA-256 and HMAC-25 and an Atmel ATECC108 tasked with the Elliptic Curve Digital Signature Algorithm (ECDSA).
“You will also find an Atmel ATmega328P microcontroller and a large prototyping area available on the board. The ATmega is loaded with the Arduino Pro Mini 3.3V bootloader and has broken out most of the signals to surrounding pads,” its SparkFun page reveals.
Beyond that, each easy-to-use CryptoCape comes with pre-soldered headers making this board ready to be attached to your BeagleBone right out of the box. The only additional item a Maker will need to get the CryptoCape fully-functional is a CR1225 coin-cell battery.
Interested? You can check out the product’s official SparkFun page here. Meanwhile, those looking to learn more should also pick up a copy of Datko’s book entitled “BeagleBone for Secret Agents.” The third chapter of the resource is devoted to the CryptoCape where Makers will learn how to combine a fingerprint sensor, the on-board ATmega328P, and the crypto chips to make a biometric authentication system.