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The Nintendo 3DS utilizes a similar title-based organization as seen in the Wii and DSi platforms. The update server is located [http://nus.cdn.c.shop.nintendowifi.net/ccs/download/ here]. When using SSL, the update/shop servers must be accessed via SSLv3.
The Nintendo 3DS utilizes a similar title-based organization as seen in the Wii and DSi platforms. The update server is located [http://nus.cdn.c.shop.nintendowifi.net/ccs/download/ here].
For a list of 3DS titles see the [[Title list]].
For a list of 3DS titles see the [[Title list]].
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"'''<ContentID>.tmd'''" - (The Content ID is a u32, initially: '''00000000''' when the title is first installed. Changing by an increment of +'''0x1''' for each title update the 3DS installs) This is the [[Title metadata]] associated with the title, it is encrypted with a console-unique [[AES|keyslot]]. The decrypted TMD is available on Nintendo's CDN server at "http://nus.cdn.c.shop.nintendowifi.net/ccs/download/TitleIDhere/tmd". Though CDN version of the title TMD has a certificate chain attached at the end of the TMD, so removing it will give you the 1:1 decrypted TMD. After installation the "<ContentID>.tmd" is redundant, because important title data is extracted and imported into the [[Title Database|title.db]] and ".cmd" files, but is however kept as a reference.
"'''<ContentID>.tmd'''" - (The Content ID is a u32, initially: '''00000000''' when the title is first installed. Changing by an increment of +'''0x1''' for each title update the 3DS installs) This is the [[Title metadata]] associated with the title, it is encrypted with a console-unique [[AES|keyslot]]. The decrypted TMD is available on Nintendo's CDN server at "http://nus.cdn.c.shop.nintendowifi.net/ccs/download/TitleIDhere/tmd.OptionallyTitleVersionHere". Though CDN version of the title TMD has a certificate chain attached at the end of the TMD, so removing it will give you the 1:1 decrypted TMD. After installation the "<ContentID>.tmd" is redundant, because important title data is extracted and imported into the [[Title Database|title.db]] and ".cmd" files, but is however kept as a reference.
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|-
| 0x4
| 0x4
| 0x1C
| 0x4
| For NAND titles' .cmd these 2 words are usually value 1, the rest of the header is all-zero. The last 0x10-bytes of this header is an AES MAC?
| Number of entries? Usually the same as the following u32.
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| 0x8
| 0x4
| Number of AESMACs? Usually the same as the preceding u32.
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| 0xC
| 0x4
| Unknown, usually (always?) 1.
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| 0x10
| 0x10
| AESMAC over contents?
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|-
| 0x20
| 0x20
| 0x8*(No. of entries)
| 0x4*(No. of entries)
| Entries for each content begin here with size 0x8.
| List of contentIDs in (usually) descending order
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| 0x20 + 0x4*(No. of entries)
| 0x4*(No. of entries)
| List of contentIDs in (usually) ascending order
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|-
| 0x20+0x8*(No. of entries)
| 0x20+0x8*(No. of entries)
| 0x10*(No. of entries)
| 0x10*(No. of entries)
| These are MACs, one for each content.
| These are AESMACs, one for each content.
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