MCUboot's Image Signing and Key Management Tool

imgtool is a Python library and command-line tool primarily designed for image signing and key management within the MCUboot ecosystem. It facilitates secure firmware updates for embedded systems by providing functionalities to generate cryptographic key pairs, extract public keys, and sign firmware images with necessary headers and trailers for bootloader verification. The library is actively maintained as a core component of the open-source MCUboot project, with releases generally aligning with MCUboot's development cycle.