https://devzone.nordicsemi.com/f/nordic-q-a/79172/question-how-to-use-eddsa-ed25519-in-nrf-connect-sdkHi there, We were using the Cryptographic library provided in the nRF5 SDK, with Oberon backend, to implement EdDSA/Ed25519 signing on our nRF5832 devices. We are now in the process of migrating our application to nRF Connect SDK, however I am havingen-USTelligent Community 13Tue, 07 Sep 2021 12:03:13 GMThttps://devzone.nordicsemi.com/thread/328381?ContentTypeID=1Tue, 07 Sep 2021 12:03:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:741694d9-474f-4b5c-9b32-b72814d52d7eMarjeris Romero<p>Hi Sean,<br /><br /></p> <p>Sorry for the late reply.</p> [quote user=""]I am having a lot of trouble figuring out how I can get access to similar&nbsp;<span>nrf_crypto_eddsa_sign() APIs to perform EdDSA signing.</span>[/quote] <p>&nbsp;You should be able to use the nrf_security API and then set <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/nrf_security/doc/backends.html#nrf-oberon-backend">nrf_oberon</a> as a backend.</p> <p>To enable nrf_oberon crypto library set the CONFIG_OBERON_BACKEND Kconfig variable to true.</p> <p>See also the Ed2519 API: <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/crypto/doc/api.html#ed25519-apis">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/crypto/doc/api.html#ed25519-apis</a></p> <p>We provide some crypto test cases examples you can use as a starting point to setup your own test case: <a href="https://github.com/nrfconnect/sdk-nrf/tree/master/tests/crypto">https://github.com/nrfconnect/sdk-nrf/tree/master/tests/crypto</a></p> <p>Best regards</p> <p>Marjeris</p><div style="clear:both;"></div>