https://devzone.nordicsemi.com/f/nordic-q-a/121038/psa-crypto-with-legacy-mbedtlsHello, I am developing a project that involves authentication over NFC, and need to store a private key in TrustZone. I found the psa_crypto zephyr sample in the sdk, which appears to be what I need, however Ive been having issues getting it to work.en-USTelligent Community 13Mon, 28 Apr 2025 13:50:56 GMThttps://devzone.nordicsemi.com/thread/533220?ContentTypeID=1Mon, 28 Apr 2025 13:50:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b394697-3afc-4811-819e-59c739c19aaaEinar Thorsrud<p>Hi,</p> <p>The Zephyr crypto samples are not supported, so plese refer to the nrf samples.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/533186?ContentTypeID=1Mon, 28 Apr 2025 12:23:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ad52c814-5501-41e5-91ef-17c9b5e35409Ivaylo Ivanov<p>It&#39;s about the /zephyr/samples/tfm_integration/psa_crypto/ sample, which seems to feature importing a persistent key and using it to sign a certificate, which is pretty much what I need<br /><br />By the way I had not noticed&nbsp;/nrf/samples/crypto/ecdsa/, that I see on the list you posted, that might also cover what I need, Im looking trough it now</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/533182?ContentTypeID=1Mon, 28 Apr 2025 12:06:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab42f194-b08a-4c23-94cf-8a48c960b158Einar Thorsrud<p>Hi,</p> <p>Which specific sample are you referring to that is not working? Much of the functionality is demonstrated by <a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/crypto.html">these offificial crypto samples</a>.&nbsp;&nbsp;Which crypto algorihtms and operations do you you need?</p><div style="clear:both;"></div>