After some reverse engineering, it appears that the keys of the
sb1 format are very weak: the 128 bytes are generated from the
laserfuse words 4,5 and 6 but in a weird manner: 4 and 5 are
simply ORed and 6 is only half used (somehow), making it "only" a
48 bit word to find.
Change-Id: I40702e19d0924ef51c01894efce3cb65bd664456
Implement actual loading of a sb1 file to a structure in full
generality. Also implement dumping for debug purpose
Change-Id: I320035ea628719480a79aaccb05dce9a83256927
In the case of encrypted SB files without any key match, it is
still possible to dump the section headers. The force option
allows one to do so. It also allows to dump unencrypted sections
of encrypted files if there are some.
Change-Id: I36280230679ac5903f9c451c68c276f5c6959536
