Savegames: Difference between revisions
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[[6.0.0-11]] implemented support for generating the savegame keyY with a new method, this method is much more complex than previous keyY methods. This is enabled via a new [[NCSD]] partition flag, all retail games which have the NCSD image finalized after the [[6.0.0-11]] release(and [[6.0.0-11]]+ in the system update partition) will have that flag set for using this new method. | [[6.0.0-11]] implemented support for generating the savegame keyY with a new method, this method is much more complex than previous keyY methods. This is enabled via a new [[NCSD]] partition flag, all retail games which have the NCSD image finalized after the [[6.0.0-11]] release(and [[6.0.0-11]]+ in the system update partition) will have that flag set for using this new method. | ||
A SHA-256 hash is calculated over the data used with the above hashed keyY method, other data is hashed here as well. An [[AES]] MAC is then calculated over this hash, the output MAC is used for the savegame keyY. | |||
The keyY used for calculating this AES MAC is initialized while NATIVE_FIRM is loading, this keyY is generated via the [[RSA]] engine. The RSA slot used here is slot0(key-data for slot0 is initialized by bootrom), this RSA slot0 key-data is overwritten once the system boots any [[NCCH#CXI|CXIs]] from NAND like [[NS]]. | |||
=== Wear leveling === | === Wear leveling === | ||