A secure boot scheme adds cryptographic checks to each stage of the boot process. This process aims to assert the integrity of all software images that are executed, preventing any unauthorized or malociously modified software from running. The most locgical cryptographic protocol to apply is one based on a public-key signature algorithm. Design a public-key signature algorithm-based protocpl to realized the secure boot scheme. Your answer should specify the usage of the public and private keys; also, your answer shoulc evaluate the following public key storing methods: 1) embed the public key in the ROM. 2) store the public key in One-Time-Programmable (OPT) hardware, and 3) store a hash of the public key.