77
edits
Changes
Jump to navigation
Jump to search
Line 74:
Line 74: − + Line 98:
Line 98: + +
→BOSS Header: This is in no way a UNIX timestamp
| 0xC
| 0xC
| 0x8
| 0x8
| u64 release date (UNIX timestamp)
| u64 serial number (?)
|-
|-
| 0x14
| 0x14
Data following the BOSS header is encrypted with AES-CTR. The AES key that is used is stored in [[AES_Registers#Keyslots|keyslot 0x38]]. The first 12 bytes of the IV are from offset 0x1C of the header, while the last 32-bit integer of the IV in big-endian is 0x1. The IV from the header is random per file, and an unique random IV is used each time the content is updated. The cleartext data begins with the content header.
Data following the BOSS header is encrypted with AES-CTR. The AES key that is used is stored in [[AES_Registers#Keyslots|keyslot 0x38]]. The first 12 bytes of the IV are from offset 0x1C of the header, while the last 32-bit integer of the IV in big-endian is 0x1. The IV from the header is random per file, and an unique random IV is used each time the content is updated. The cleartext data begins with the content header.
The 64-bit number may be serial number which is increased every time someone requested to sign and create a boss container for his file. The 3DS sees the downloaded file as new if this number is different from the previous download (Doesn't matter if the number is bigger or smaller).
=== Content Header ===
=== Content Header ===