Titles: Difference between revisions

Revision as of 05:47, 7 June 2019 view source Ihaveamac (talk \| contribs) 47 edits →Data Structure: add note about twlnand cmd files ← Older edit		Revision as of 06:16, 7 June 2019 view source Ihaveamac (talk \| contribs) 47 edits →Data Structure: cmacs for twlnand have been figured out Newer edit →
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	For SD contents, each AES-CMAC is generated by combining the NCCH header without the signature (0x100-0x1FF), the Content Index and Content ID at the end, both as u32. Then calculate the SHA256 of the data and generate the AES-CMAC using the [[AES Registers#Keyslots\|SD/NAND AES-CMAC key]].		For SD contents, each AES-CMAC is generated by combining the NCCH header without the signature (0x100-0x1FF), the Content Index and Content ID at the end, both as u32. Then calculate the SHA256 of the data and generate the AES-CMAC using the [[AES Registers#Keyslots\|SD/NAND AES-CMAC key]].

	For TWLNAND contents, the process is ~~currently unknown, but it appears to use a different keyslot~~(~~cmd file was identical~~ even ~~after a system format~~).		For TWLNAND contents, the same process is used(even for SRL contents) with the keyslot for NAND dbs.