An embedded processing system, which is a controller for a gas turbine engine, the embedded processing system comprising: processing circuitry configured to execute a plurality of computer executable instructions; a memory system configured to store a plurality of configuration items, wherein at least one of the configuration items comprises an application configured to control operation of the gas turbine engine, and wherein at least one of the configuration items comprises a reconfigurable entity map that defines a list of address ranges of the configuration items; and an authentication control configured to: authenticate an immutable anchor associated with the embedded processing system, wherein authentication of the immutable anchor is performed upon receiving a reset signal at the embedded processing system, and wherein the immutable anchor is encoded in a read-only storage; authenticate integrity of the reconfigurable entity map upon successful authentication of the immutable anchor; locate one or more of the configuration items in the memory system based on the list of address ranges in the reconfigurable entity map upon successful authentication of the reconfigurable entity map; authenticate the one or more of the configuration items based on the reconfigurable entity map; and perform an accommodation measure based on an authentication failure of at least one of the configuration items. processing circuitry configured to execute a plurality of computer executable instructions; a memory system configured to store a plurality of configuration items, wherein at least one of the configuration items comprises an application configured to control operation of the gas turbine engine, and wherein at least one of the configuration items comprises a reconfigurable entity map that defines a list of address ranges of the configuration items; and an authentication control configured to: authenticate an immutable anchor associated with the embedded processing system, wherein authentication of the immutable anchor is performed upon receiving a reset signal at the embedded processing system, and wherein the immutable anchor is encoded in a read-only storage; authenticate integrity of the reconfigurable entity map upon successful authentication of the immutable anchor; locate one or more of the configuration items in the memory system based on the list of address ranges in the reconfigurable entity map upon successful authentication of the reconfigurable entity map; authenticate the one or more of the configuration items based on the reconfigurable entity map; and perform an accommodation measure based on an authentication failure of at least one of the configuration items. authenticate an immutable anchor associated with the embedded processing system, wherein authentication of the immutable anchor is performed upon receiving a reset signal at the embedded processing system, and wherein the immutable anchor is encoded in a read-only storage; authenticate integrity of the reconfigurable entity map upon successful authentication of the immutable anchor; locate one or more of the configuration items in the memory system based on the list of address ranges in the reconfigurable entity map upon successful authentication of the reconfigurable entity map; authenticate the one or more of the configuration items based on the reconfigurable entity map; and perform an accommodation measure based on an authentication failure of at least one of the configuration items.