imx8mm evk HABV4 Single SRK Key

[mukunda9g]

In the link below it says with HAB V4.1.2 it's possible to use a single SRK to authenticate both CSF and Image contents. 

https://source.codeaurora.org/external/imx/uboot-imx/tree/doc/imx/habv4/introduction_habv4.txt?h=imx...

Could you let me know what modifications we need to make to the corresponding csf.txt files?

https://source.codeaurora.org/external/imx/uboot-imx/tree/doc/imx/habv4/csf_examples/mx8m_mx8mm?h=im...

I am using Yacto Zeus build to test on my imx8mm evaluation kit. How to check which version of HAB V4 currently being used in my setup?

[Yuri]

@mukunda9g 
Hello,

Use section 5.1.1 (Generating PKI tree for fast authentication) of AN4581
(i.MX Secure Boot on HABv4 Supported Devices).

 https://www.nxp.com/docs/en/application-note/AN4581.pdf

For more details on key generation for CST, see HAB CST User Guide,

https://www.nxp.com/webapp/Download?colCode=IMX_CST_TOOL_NEW&location=null

i.MX8Mm supports fast authentication.

Regards,
Yuri.