imgtool

manages MCUboot firmware images

TLDR

Create MCUboot image

$ imgtool create --key [key.pem] --align 4 --version 1.0.0 [app.bin] [signed.bin]

Sign image

$ imgtool sign --key [key.pem] [input.bin] [output.bin]

Get image info

$ imgtool getinfo [image.bin]

Generate keys

$ imgtool keygen --key [key.pem] --type rsa-2048

imgtool manages MCUboot firmware images. It creates, signs, and inspects bootloader-compatible images.The tool is essential for secure boot workflows. It handles image headers, signatures, and version information.

PARAMETERS

COMMAND

Operation to perform.

create

Create signed image.

sign

Sign existing image.

getinfo

Show image information.

keygen

Generate signing keys.

--key FILE

Key file.

--help

Display help information.

INSTALL

sudo apt install mame-tools

sudo dnf install mame-tools

sudo pacman -S mame-tools

sudo zypper install mame-tools

nix profile install nixpkgs#mame-tools

CAVEATS

Part of MCUboot project. Specific image format. Cryptographic keys required.

HISTORY

imgtool is part of MCUboot, an open-source secure bootloader for microcontrollers.