Changes

Note: in some cases various game content uses the above newer crypto as well.

Note: in some cases various game content uses the above newer crypto as well.

The keyindex passed to the contentkey-generation funcptr is determined as follows:

The keyindex passed to <key-generation-related code> is determined as follows:

* Pre-[[3.0.0]]: The ncahdr keyindex field(0x207) is passed directly.

* Pre-[[3.0.0]]: The ncahdr keyindex field(0x207) is passed directly.

* [[3.0.0]]+: It's determined using ncahdr keyindex(0x207) and "Crypto Type"(0x206). The latter field must be 0-2. In each ncahdr_keyindex block, it executes "if(ncahdr_x206>=3)<panic>", but that won't trigger due to the earlier check. The end result is basically the same as pre-[[3.0.0]], except when ncahdr_x206 == 0x2, final_index is new_base_index+ncahdr_keyindex. Actual implementation loads index from u32_array[ncahdr_crypto_type], where the address of u32_array is different for each ncahdr_keyindex.

* [[3.0.0]]+: It's determined using ncahdr keyindex(0x207) and "Crypto Type"(0x206). The latter field must be 0-2. In each ncahdr_keyindex block, it executes "if(ncahdr_x206>=3)<panic>", but that won't trigger due to the earlier check. The end result is basically the same as pre-[[3.0.0]], except when ncahdr_x206 == 0x2, final_index is new_base_index+ncahdr_keyindex. Actual implementation loads index from u32_array[ncahdr_crypto_type], where the address of u32_array is different for each ncahdr_keyindex.