Ticket

Tickets are found in many encrypted files used by the Wii (e.g. WAD Files or Wii Discs). Tickets for NAND titles are stored in /ticket, while tickets for discs are stored on the disc itself. Tickets contain the encrypted AES "title key" and the Title ID of the data and are signed by a certificate from a certificate chain (which usually is the same for all titles and stored somewhere on the NAND). So far only tickets with RSA-2048 signatures have been seen. Discs will only work with those signatures because the size of partition ticket is always 0x2a4.

While all Wii titles are available on NUS, they are encrypted with a title key found in the ticket. For system titles and certain official channels (such as the Internet Channel), the ticket is also available on NUS - all other titles require a console-specific ticket, which is what is purchased with the Wii Shop Channel. Deleting a title using the data management feature of the System Menu leaves the ticket intact; this is responsible for allowing software to be redownloaded. However, tools such as AnyTitle Deleter delete tickets when they delete titles, which removes all traces of the title.

File structure

Signed blob header

Absolute start	Absolute end	Length	Description
0x0000	0x0003	0x04	Signature type (always 0x10001 for RSA-2048)
0x0004	0x0103	0x100	Signature by a certificate's key
0x0104	0x013F	0x3C	Padding module 64

v0 ticket

This part of the ticket is included in both v0 and v1 tickets.

Absolute start	Absolute end	Length	Description
0x0140	0x017F	0x40	Signature issuer
0x0180	0x01BB	0x3C	ECDH data, used to generate one-time key during install of console specific titles
0x01BC	0x01BC	0x01	Ticket format version
0x01BD	0x01BE	0x02	Reserved
0x01BF	0x01CE	0x10	Title Key, encrypted by Common Key
0x01CF	0x01CF	0x01	Unknown
0x01D0	0x01D7	0x08	ticket_id (used as IV for title key decryption of console specific titles)
0x01D8	0x01DB	0x04	Console ID
0x01DC	0x01E3	0x08	Title ID / Initialization Vector (IV) used for AES-CBC encryption
0x01E4	0x01E5	0x02	Unknown, mostly 0xFFFF
0x01E6	0x01E7	0x02	Ticket title version
0x01E8	0x01EB	0x04	Permitted Titles Mask
0x01EC	0x01EF	0x04	Permit mask. The current disc title is ANDed with the inverse of this mask to see if the result matches the Permitted Titles Mask.
0x01F0	0x01F0	0x01	Title Export allowed using PRNG key (1 = allowed, 0 = not allowed)
0x01F1	0x01F1	0x01	Common Key index (2 = Wii U Wii mode, 1 = Korean Common key, 0 = "normal" Common key)
0x01F2	0x0221	0x30	Unknown. Is all 0 for non-VC, for VC, all 0 except last byte is 1.
0x0222	0x0261	0x40	Content access permissions (one bit for each content)
0x0262	0x0263	0x02	Padding (Always 0)
0x0264	0x0267	0x04	Limit type (0 = disable, 1 = time limit (minutes), 3 = disable, 4 = launch count limit)
0x0268	0x026B	0x04	Maximum usage, depending on limit type
0x026C	0x02A3	0x38	7 more ccLimit structs as above ({int type, max})

To get the title key decrypt the 16 bytes at offset 0x1bf with the Common Key using the Title ID (offset 0x1dc) as the initialization vector (the last 8 bytes of the IV should be zero).

v1 ticket

This part is only present in v1 tickets (stored as .tv1 files in the NAND), which are only supported in versions of IOS56 and above bundled with 4.2 or newer. All offsets are relative to the beginning of the v0 ticket.

Ticket header

Absolute start	Absolute end	Length	Description
0x02A4	0x02A5	2	Version of the v1 ticket header
0x02A6	0x02A7	2	Size of the v1 ticket header
0x02A8	0x02AB	4	Size of the v1 ticket (0x14?)
0x02AC	0x02AF	4	Offset to the section headers
0x02B0	0x02B1	2	Number of section headers
0x02B2	0x02B3	2	Size of each section header (0x14?)
0x02B4	0x02B7	4	Miscellaneous flags

Section header

Start	End	Length	Description
0x00	0x03	4	Offset to the records
0x04	0x07	4	Number of records
0x08	0x0B	4	Size of each record in this section
0x0C	0x0F	4	Size of the section
0x10	0x11	2	Section type
0x12	0x13	2	Miscellaneous flags