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BK-Demo for Arm Cortex-M Core Development Boards

Includes Authentication Project for ST NUCLEO-L4A6ZG

BK Functionality Project

Explore the functionalities the Intrinsic ID BK software has to offer by installing BK-Demo on an Arm Cortex-M core development board. BK-Demo is a simulation version mimicking the behavior and functionality of the Intrinsic ID commercial product BK-Pro. This product is based on the concept of SRAM Physical Unclonable Functions (PUFs), where the underlying SRAM is used as a silicon fingerprint from which device-unique keys can be derived, avoiding the need to store secret key material on chip.

BK-Demo illustrates how the BK-Pro API works and allows you to:

  • enroll a device, generate an activation code and a PUF root key.
  • derive device-unique and independent cryptographic keys from the PUF root key.
  • protect user keys by wrapping them with device-unique wrapping keys.
  • derive an ECC 256-bit private key from the SRAM PUF and compute the public key. In addition, to verify that the same keypair is reconstructed each time, even after power cycles.
  • generate a certificate signing request (CSR) and sign certificates (SSC).
  • sign and verify messages (ECDSA).
  • generate ephemeral keys to be used in secure communications (ECDH).

Important Note: BK-Demo mimics this behavior but doesn’t offer the same security level as the commercial BK product. Keys and certificates created by BK-Demo are for demonstration and evaluation purposes only and are not safe to be used in a commercial product.

BK-Demo is delivered as a compressed archive. The archive contains the following items:

  • Binary files
  • Documentation
  • Example projects

The BK-Demo binary files work with Arm Cortex M0, M0+,  M33,  M4, and  M7 core development boards. To get started easily, we added two BK functionality projects as an example. These projects require either a NXP LPCXpresso54114 or a NUCLEO-L4A6ZG development board.

BK-Demo is subject to EU export restrictions according to Council Regulation (EC) No. 428/2009, dual-use control category 5D002.

Authentication & Key Vault Project for ST NUCLEO-L4A6ZG

In this project we will illustrate how you can use BK Software IP to secure an STM32L4A6ZG microcontroller. In particular, we will illustrate how you can:

  • Leverage an SRAM based Physical Unclonable Function (PUF) to create a device-unique root key
  • Derive a cryptographic device identity consisting of an asymmetric key pair
  • Generate a certificate signing request (CSR) from the device and turn it into a device certificate
  • Verify device authenticity with a challenge-response protocol
  • Use the PUF root key to securely store multiple keys in NVM

Project requirements:

We Value Your Suggestions

Over the course of the year we will make BK-Demo available on other platforms. Suggestions? Feel free to contact us via info[@]intrinsic-id.com.

Please complete this form and get approved to receive BK-Demo. Fields with an asterisk (*) are required.

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