Epk with crypted header + Find key for epk2

TODO.md

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+# Formats
+- Mstar upgrade bin - 80% complete - need to handle securewrite and LZO compression
+- Samsung Old fw dir - Complete
+- TPV(Philips) 2023/TitanOS TIMG - Complete
+- PFL UPG(Philips) - Complete
+- LG Epk1 - 66% complete, epk1(new) not supported, couldnt find one
+- Novatek (NFWB) - Complete
+- Samsung MSD10(Legacy and Tizen 2015) - Complete
+- Samsung MSD11(Tizen 2016+) - Complete
+- Panasonic SDDL.SEC(2011+) - Complete
+- LG Epk2 (Crypted and plain header)- Should be complete, but needs some more testing
+
+# TODO
+- implement some key storing system instead of hardcoding
+- cleanup some formats especially mstar and samsung old
+- cleanup main file
+- Do more testing for PFL UPG and Epk2
+- Epk3?