https://community.nxp.com/t5/i-MX-Solutions/ECDH-using-CAAM-hardware-acceleration/m-p/2161041#M652 <P>Hi,</P><P>I am working on a i.mx 8MPlus EVK.</P><P>I want to (1) generate EC key pair, (2) derive shared ECDH secret, (3) compute SHA-256 digest of the ECDH shared secret and (4) perform&nbsp;<SPAN>AES-GCM-256 data encryption with the computed digest using CAAM hardware acceleration for all the 4 operations.</SPAN></P><P><SPAN>(The file will later be decrypted on another device).</SPAN></P><P><SPAN>I referred to AN-12838 (from 2020), however it just shows generation of EC key pair:</SPAN></P><LI-CODE lang="markup">openssl ecparam -engine devcrypto -genkey -out blackkey.pem -name prime256v1</LI-CODE><P>&nbsp;</P><P>What is the latest&nbsp;<SPAN>recommended way to use CAAM hardware acceleration for these 4 operations?</SPAN></P><P>&nbsp;</P><P><SPAN>Thank you.</SPAN></P> Sun, 31 Aug 2025 22:34:43 GMT flying-hawk-342 2025-08-31T22:34:43Z https://community.nxp.com/t5/i-MX-Solutions/ECDH-using-CAAM-hardware-acceleration/m-p/2161041#M652 <P>Hi,</P><P>I am working on a i.mx 8MPlus EVK.</P><P>I want to (1) generate EC key pair, (2) derive shared ECDH secret, (3) compute SHA-256 digest of the ECDH shared secret and (4) perform&nbsp;<SPAN>AES-GCM-256 data encryption with the computed digest using CAAM hardware acceleration for all the 4 operations.</SPAN></P><P><SPAN>(The file will later be decrypted on another device).</SPAN></P><P><SPAN>I referred to AN-12838 (from 2020), however it just shows generation of EC key pair:</SPAN></P><LI-CODE lang="markup">openssl ecparam -engine devcrypto -genkey -out blackkey.pem -name prime256v1</LI-CODE><P>&nbsp;</P><P>What is the latest&nbsp;<SPAN>recommended way to use CAAM hardware acceleration for these 4 operations?</SPAN></P><P>&nbsp;</P><P><SPAN>Thank you.</SPAN></P> Sun, 31 Aug 2025 22:34:43 GMT https://community.nxp.com/t5/i-MX-Solutions/ECDH-using-CAAM-hardware-acceleration/m-p/2161041#M652 flying-hawk-342 2025-08-31T22:34:43Z