MCUXpresso SDK Documentation
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puf_1

puf_1#

Overview#

The PUF Example project is a demonstration program that uses the KSDK software implement secure key storage using PUF software driver.

Usual use consists of these steps:

  1. Start: The Activation Code (AC) generated during the enroll operation and the Startup Data (SD) are used to reconstruct the digital fingerprint. It is done after every power-up and reset.

  2. Generate Key: The controller generates an unique key and combines it with the digital fingerprint to output a key code. Each time a Generate Key operation is executed a new unique key is generated.

  3. Set Key: The digital fingerprint generated during the Enroll/Start operations and the key provided by the Client Design (CD) are used to generate a Key Code (KC). This KC can be stored externally. Perform this operation only once for each key.

  4. Get Key: The digital fingerprint generated during the Start operation and the KC generated during a Set Key operation are used to retrieve a stored key. Perform this operation every time a key is needed.

Supported Boards#

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