Clarification Needed: secp192r1 Support for NRF54L15https://devzone.nordicsemi.com/f/nordic-q-a/127239/clarification-needed-secp192r1-support-for-nrf54l15Hello, We’re starting to implement our solution in an nRF SDK project (version 3.2.2) targeting the nRF54L15 component. From a cryptography standpoint, we will need to use MbedTLS to verify X.509 certificates signed with ECDSA (secp192r1en-USTelligent Community 13Wed, 04 Mar 2026 13:14:47 GMTRE: Clarification Needed: secp192r1 Support for NRF54L15https://devzone.nordicsemi.com/thread/562549?ContentTypeID=1Wed, 04 Mar 2026 13:14:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:86be4a4c-c3f1-42dc-9fa1-5374dd2d9487mouss<p><span>I fully agree with you. However, existing systems use this curve, and we should still maintain compatibility to communicate with them. Normally, the library should support it as a legacy feature and should not remove it.</span></p><div style="clear:both;"></div>RE: Clarification Needed: secp192r1 Support for NRF54L15https://devzone.nordicsemi.com/thread/562487?ContentTypeID=1Wed, 04 Mar 2026 00:03:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:980bb28a-bbb4-4785-b221-9128709d9881Emil Lenngren<p>Why are you using secp192r1? According to&nbsp;<a href="https://csrc.nist.gov/pubs/sp/800/131/a/r2/final">csrc.nist.gov/.../final</a>, that curve is nowadays disallowed for signature generation, and signature verification is only approved for legacy use.</p><div style="clear:both;"></div>RE: Clarification Needed: secp192r1 Support for NRF54L15https://devzone.nordicsemi.com/thread/562456?ContentTypeID=1Tue, 03 Mar 2026 15:10:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7703a7c2-153f-47a4-a2a8-c2d2bc98f277mouss<p>Hello,</p> <p>Yes the documentation has been updated today.</p><div style="clear:both;"></div>RE: Clarification Needed: secp192r1 Support for NRF54L15https://devzone.nordicsemi.com/thread/562455?ContentTypeID=1Tue, 03 Mar 2026 15:08:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:534b4dd9-8358-494a-a23d-e93f9f257f6eSigurd Hellesvik<p>Hi,</p> <p>From&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/security/crypto/crypto_supported_features.html#ecc_curve_types"> ECC curve types</a>, we can see that secp192k1 and secp192r1 are not supported for the nRF54L series:</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1772550484344v1.png" alt=" " /></p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>