How to sign rootfs

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How to sign rootfs

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yilingxu
Contributor III

Hi, 

My board is imx6q, now I want to sign the rootfs(in ext4 format), How can I sign the rootfs?

Can anyone give me some suggestion, or recommend me some reference? Thanks a lot.

Yiling Xu

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yilingxu
Contributor III

calculate the sha256 of the rootfs.

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tomasklein
Contributor II

Could you please describe it more ? Like calculate the hash and store it in kernel image ? I have the same problem, but i can not find a solution.

Thanks :smileyhappy:

Tomas Klein

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yilingxu
Contributor III

Yes, kernel calculate the hash of rootfs, and the hash result should be stored in secure storage.

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jimmychan
NXP TechSupport
NXP TechSupport

what is “sign rootfs"? could you explain this more?

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