https://community.nxp.com/t5/MCUXpresso-Secure-Provisioning/Secure-Boot-Secure-Update/m-p/2191314#M706 <P>I would like uploading in RAM a signed image (included with hash and digital signature) and verifying its authentycity and integrity at secure boot time.</P><P>I don't want use an sb3 structure but a custom structure with an header (where there is hash and digital signature) and the image to be started.</P><P>Can I use sss api in my custom bootloader? I cannot find any examples for verifying my image with KW45 and EdgeLock.</P><P>Thank you</P><P>Alessandro</P> Thu, 23 Oct 2025 08:09:23 GMT alereale 2025-10-23T08:09:23Z https://community.nxp.com/t5/MCUXpresso-Secure-Provisioning/Secure-Boot-Secure-Update/m-p/2191314#M706 <P>I would like uploading in RAM a signed image (included with hash and digital signature) and verifying its authentycity and integrity at secure boot time.</P><P>I don't want use an sb3 structure but a custom structure with an header (where there is hash and digital signature) and the image to be started.</P><P>Can I use sss api in my custom bootloader? I cannot find any examples for verifying my image with KW45 and EdgeLock.</P><P>Thank you</P><P>Alessandro</P> Thu, 23 Oct 2025 08:09:23 GMT https://community.nxp.com/t5/MCUXpresso-Secure-Provisioning/Secure-Boot-Secure-Update/m-p/2191314#M706 alereale 2025-10-23T08:09:23Z https://community.nxp.com/t5/MCUXpresso-Secure-Provisioning/Secure-Boot-Secure-Update/m-p/2191340#M707 <P>Hi Alessandro,</P> <P>&nbsp;</P> <P>by sss API you mean ROM API? Probably this question should go to SDK forum, if you miss some example (in SDK).</P> <P>&nbsp;</P> <P>Regards,</P> <P>Libor</P> Thu, 23 Oct 2025 08:45:18 GMT https://community.nxp.com/t5/MCUXpresso-Secure-Provisioning/Secure-Boot-Secure-Update/m-p/2191340#M707 liborukropec 2025-10-23T08:45:18Z