Hello, I have a uImage saved in a memory partition and I am able to boot on it with bootm command. I would like to add a digest (like a hmac(sha1)) in order to check the integrity of the binary before booting on it. Because my partition is bigger than my uImage, I don't know how to use digest on it. In fact there are two problems that I don't know how to solve: I can't get the size of my file and I can't ask digest to work on COUNT bytes. For the size problem: I can extract the size of the uImage in binary form since this information is present in the uImage header (via memcpy), but I don't know how to convert it in a format compatible with Hush. For digest, I can copy the binary in the RAM, but I fear that it is longer than working on the flash: it takes 4,8s to memcpy the uImage in a RAM file, and less than 3s to bootm on the flash. But Do you know a way to get the size of a file? Or to convert a binary size into a "human readable format" for Hush? Or should I develop a kind of "stat" utility for barebox? Thank you in advance, I hope my explanation is not too convoluted :) Thank you in advance, Best regards, -- Philippe LEDUC ledphilippe@xxxxxxxxx _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
