DSiWare Exports: Difference between revisions

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-The DSiWare exported from a 3DS is located at "[[SD_Filesystem|sdmc]]:/Nintendo 3DS/<ID0>/<ID1>/Nintendo DSiWare". Filenames are same format as DSi: "<TitleID-Low>.bin". The keys/format for these files are completely different from [http://dsibrew.org/wiki/Tad DSi]. Like DSi, 3DS DSiWare exports seem to use [http://dsibrew.org/wiki/ES_block_encryption ES] block encryption. The below sizes include the 0x20-byte ES block metadata.
+The DSiWare exported from a 3DS is located at "[[SD_Filesystem|sdmc]]:/Nintendo 3DS/<ID0>/<ID1>/Nintendo DSiWare". Filenames are same format as DSi: "<TitleID-Low>.bin". The keys/format for these files are completely different from [http://dsibrew.org/wiki/Tad DSi]. The below sizes include the 0x20-byte block metadata.
-DSiWare exported from 3DS are encrypted using the same [[Nand/private/movable.sed|keyslot]] used for encrypting other 3DS [[SD_Filesystem|SD]] card data.
+DSiWare exported from 3DS use [[Nand/private/movable.sed|keyslots]] initialized by movable.sed, these exports are encrypted with AES-CTR.
-=File structure=
+=Block Metadata=
+{| class="wikitable" border="1"
+|-
+!  Offset
+!  Size
+!  Description
+|-
+| 0x0
+| 0x10
+| AES MAC
+|-
+| 0x10
+| 0x10
+| CTR
+|}
+Each section begins with the actual encrypted data, followed by this block metadata.
+=File Structure=
 {| class="wikitable" border="1"
 |-
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 | 0x0
 | 0x4020
-| Banner?
+| Banner section
 |-
 | 0x4020
 | 0xA0
-| Header?
+| Header section
 |-
 | 0x40C0
 | 0x400
-| Footer?
+| Footer section
 |-
 | 0x44C0
 |
-| Data for the content sections is stored here, where each section is encrypted under separate ES blocks.
+| Data for the 4 content sections are stored here.
 |}