backup ta partition without root

hi guys im new to rooting and xda
is it possible to backup the ta partition ( DRM keys ) without unlocking the boot-loader
because i don't wanna lose my drm keys
im using m4 aqua e2353 6.0.1 build: 26.3.A.0.131
i tried using ta backup but it needs root access
to root i need unlocked boot-loader
if i unlock the bootloader ill lose my warranty
so what is the solution for my problem ??
hwlp me out fellas............:confused::confused::confused::c onfused:

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