u-boot/doc/uImage.FIT/sign-configs.its

/dts-v1/;

/ {
	description = "Chrome OS kernel image with one or more FDT blobs";
	#address-cells = <1>;

	images {
		kernel@1 {
			data = /incbin/("test-kernel.bin");
			type = "kernel_noload";
			arch = "sandbox";
			os = "linux";
			compression = "lzo";
			load = <0x4>;
			entry = <0x8>;
			kernel-version = <1>;
			hash@1 {
				algo = "sha1";
			};
		};
		fdt@1 {
			description = "snow";
			data = /incbin/("sandbox-kernel.dtb");
			type = "flat_dt";
			arch = "sandbox";
			compression = "none";
			fdt-version = <1>;
			hash@1 {
				algo = "sha1";
			};
		};
	};
	configurations {
		default = "conf@1";
		conf@1 {
			kernel = "kernel@1";
			fdt = "fdt@1";
			signature@1 {
				algo = "sha1,rsa2048";
				key-name-hint = "dev";
				sign-images = "fdt", "kernel";
			};
		};
	};
};