Savegames: Difference between revisions
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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 during system boot. Starting with [[7.0.0-13]] this key-init function used at boot is also used to initialize a keyslot used for the new [[NCCH]] encryption method. | 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 during system boot. Starting with [[7.0.0-13]] this key-init function used at boot is also used to initialize a keyslot used for the new [[NCCH]] encryption method. | ||
This [[FIRM|Process9]] key-init function first checks if a certain 0x10-byte block in the 0x01FF8000 region is all-zero. When all-zero it immediately returns, otherwise it clears that block then continues to do the key generation. This is likely for supporting launching a v6.0+ NATIVE_FIRM under this FIRM. | |||
=== Wear leveling === | === Wear leveling === | ||