Can you add a manually signed image function？

[slwyts]

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Can you add a manually signed image function？Because some mobile phones will perform mandatory verification on the system image, when I try to access gsi, the mobile phone will refuse to start. Can you add a sign command to sign the system and modify the vbmeta image. thanks.

[cfig]

Your request is the same as below one? https://github.com/cfig/Android_boot_image_editor/issues/112

[slwyts]

No, I hope to add a manual signature function for the image

[cfig]

em, then 1.sign/hash system.img, by adding Merkle tree. 2.update vbmeta with info of system.img hash info