The RPMB partition relies on a shared secret key between the host processor and the eMMC.
Understanding RPMB in SK Hynix eMMC: Functions, Architecture, and Clearing Data clean rpmb emmc skhynix
: Provides dedicated options to "Clean RPMB" for specific supported SK Hynix chipsets, effectively resetting the partition to its factory state. The RPMB partition relies on a shared secret