SD Filesystem: Difference between revisions

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 * ID0 is the first 0x10-bytes from a SHA256 [[nand/private/movable.sed|hash]].
-* ID1 is the SD card CID from the SD card which this directory was originally created on, with each u16 moved around from the original CID.
+* ID1 is the scrambled SD card CID from the SD card which this directory was originally created on. To generate this directory name from the original CID, first the CID is rotated 8-bits to the left. Then, each u16 is moved as described in the below table:
+{| class="wikitable" border="1"
+|-
+!  Input rotated CID u16 index
+!  Output CID u16 index
+|-
+|  6
+|  0
+|-
+|  7
+|  1
+|-
+|  4
+|  2
+|-
+|  5
+|  3
+|-
+|  2
+|  4
+|-
+|  3
+|  5
+|-
+|  0
+|  6
+|-
+|  1
+|  7
+|}
 '''DCIM''' - Photos and Videos taken by the [[Nintendo 3DS Camera]] application are stored in this directory. Internet Browser image downloads are stored here too.
@@ Line 30: / Line 60: @@
 Additional game data is stored here.
-See the [[extdata]] page for more extdata info and the extdataIDs list.
+See the [[extdata]] page for extdata structure/encryption info and the extdataIDs list.
-All "extra data" under [[extdata]] is encrypted. Extdata can't be decrypted with the xorpad fail used for old FLASH saves. All "extra data" files can't be copied to other 3DS SD cards, they are locked to the console.
 == Private ==