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Line 1: − [[Category:File formats]]+ − '''CommonETicket''' (for short, '''cetk''') is a format as a ticket used to store an encrypted titlekey (using 128-Bit AES-CBC). This format seems to be identical to DSi/Wii tickets. − − == Structure == − − All of the data in the file is represented in Big Endian. − − === Content === − {| class="wikitable" − | align="center" style="background:#f0f0f0;"|'''Offset''' − | align="center" style="background:#f0f0f0;"|'''Size''' − | align="center" style="background:#f0f0f0;"|'''Description''' − |- − | 0x000||0x4||Signature Type − |- − | 0x004||0x100||Signature − |- − | 0x104||0x3C||Signature Padding, aligning end of signature to 0x40 bytes − |- − | 0x140||0x40||Issuer − |- − | 0x180||0x3C||ECDH data for console-unique eShop tickets. − |- − | 0x1BC||0x3||Unknown, first u8 is 0x01. − |- − | 0x1BF||0x10||Encrypted TitleKey − |- − | 0x1CF||0x1||Unknown − |- − | 0x1D0||0x8||TicketID − |- − | 0x1D8||0x4||Ticket consoleID − |- − | 0x1DC||0x8||TitleID − |- − | 0x1E4||0x2||Unknown − |- − | 0x1E6||0x2||Ticket title version, this title version is also stored in the [[TMD]]. − |- − | 0x1E8||0x8||Unused − |- − | 0x1F0||0x1||Unused − |- − | 0x1F1||0x1||Ticket common [[AES|keyY]] index, usually 0x1 for retail system titles. − |- − | 0x1F2||0xB2||Unused − |- − | 0x2A4||0x30||Unknown − |- − | 0x2D4||0x7C||Unused − |} − − The Signature Type is the same const as that in [[TMD]]. − − The titlekey is decrypted by using the [[AES]] engine with the ticket common-key keyslot where the keyY is one of 6 keyYs loaded via the keyY index stored in the ticket. AES-CBC mode is used where the IV is the big-endian titleID. Note that on a retail unit index0 is a retail keyY, while on a dev-unit index0 is the dev common-key which is a normal-key.(On retail for these keyYs, the hardware key-scrambler is used) − − == Certificate Chain == − Tickets retrieved from CDN/SOAP have a [[Certificates|certificate]] chain appended at the end of the file. There are two certificates in this chain: − − {| class="wikitable" border="1" − |- − ! CERTIFICATE − ! SIGNATURE TYPE − ! RETAIL CERT NAME − ! DEBUG CERT NAME − ! DESCRIPTION − |- − | Ticket − | RSA-2048 − | XS0000000c − | XS00000009 − | Used to verify the Ticket signature − |- − | CA − | RSA-4096 − | CA00000003 − | CA00000004 − | Used to verify the Ticket Certificate − |} − − The CA certificate is issued by 'Root', the public key for which is stored in NATIVE_FIRM. − − == Some facts== − * '''CETK''' can be fetched through HTTP using the link to default update server, using the title's [[TMD]] URL where "cetk" is used instead of "tmd" for the URL. The 3DS NIM module retrieves system tickets via SOAP request ''GetCommonETicket''.
Redirected page to Ticket
#REDIRECT [[Ticket]]