���� Note:This chip is NOT capable of encrypting and decrypting data. It can however, perform quite a few

cryptographic authentication processes such as secure private key creation, secure key storage and digital

signature creation and verification.

At a very high level, the purpose of using this chip is to (1) verify that the message received actually came from the

true sender and (2) verify that the data received was not tampered with. This technology is used in hyper-critical

devices such as rocket launches, medical devices, two factor authentication keys (2FA), ink cartridges, garage

door openers and car key FOBs.

Probably it's most important feature: this device can securely store a private ECC key. In fact, this private key will

never be accessible - not even to you, the owner. It is created internally on the chip during configuration, and it can

never be read from the chip (even if your de-capped the chip). Although you will never know it, you can still

command the co-processor to use the secret private key to create a unique signature on some data. With this

functionality, it can be used to securely authenticate a message in any kind of communication system. For

example, between systems such as a node in an IoT system. Follow along, and you'll be creating 64 byte

signatures (yes, bytes) and verifying them securely in no time!

Checkout this video for more details on this tutorial.

Required Materials

To follow along with this tutorial, you will need the following materials. You may not need everything though

depending on what you have. Add it to your cart, read through the guide, and adjust the cart as necessary.

Note: To follow this tutorial, an Artemis microcontroller board has to be used with this product due to the

buffer size required for the I C bus.

For more advanced users, other microcontrollers can be used, but the buffer size of Wire library and/or the

syntax for the serial print statements will need to be modified. (*This is outside the scope of this tutorial.)

Product Showcase: SparkFun Cryptographic Co-Pro

Product Showcase: SparkFun Cryptographic Co-Pro…

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