https://community.nxp.com/t5/Secure-Authentication/se050-ed448-question/m-p/2411226#M2149 <P>Dear&nbsp;</P><P>I am finding conflicting information across documents regarding the SE050E's support for the Ed448 curve, and my own attempts to implement it have been unsuccessful.</P><P><STRONG>Could you please confirm once again whether the SE050E supports Ed448?</STRONG></P><P>When I execute the SE050E API to verify a certificate signature, the `WriteECKey` operation fails and returns error code `0x6985` (curve `0x42`), which indicates "Conditions of use not satisfied."<BR />Upon further investigation, it appears that the "448" support on the SE050E refers to X448 DH rather than Ed448 signatures; could you please verify this?</P> Fri, 04 Sep 2026 08:08:24 GMT Changhawn 2026-09-04T08:08:24Z https://community.nxp.com/t5/Secure-Authentication/se050-ed448-question/m-p/2411226#M2149 <P>Dear&nbsp;</P><P>I am finding conflicting information across documents regarding the SE050E's support for the Ed448 curve, and my own attempts to implement it have been unsuccessful.</P><P><STRONG>Could you please confirm once again whether the SE050E supports Ed448?</STRONG></P><P>When I execute the SE050E API to verify a certificate signature, the `WriteECKey` operation fails and returns error code `0x6985` (curve `0x42`), which indicates "Conditions of use not satisfied."<BR />Upon further investigation, it appears that the "448" support on the SE050E refers to X448 DH rather than Ed448 signatures; could you please verify this?</P> Fri, 04 Sep 2026 08:08:24 GMT https://community.nxp.com/t5/Secure-Authentication/se050-ed448-question/m-p/2411226#M2149 Changhawn 2026-09-04T08:08:24Z