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49 bytes removed ,  05:16, 7 June 2019
→‎Data Structure: cmacs for twlnand have been figured out
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 same process is currently unknown, but it appears to use a different keyslotused(cmd file was identical even after a system formatfor SRL contents)with the keyslot for NAND dbs.
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