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→User Agent: The unknown number represents the CTRSDK version that the BOSS sysmodule was built with
The default user-agent used for SpotPass HTTPS requests (including the policylist) has the following format:
The default user-agent used for SpotPass HTTPS requests (including the policylist) has the following format:
<tt><user agent codename>-<user agent version>/<printed hex u64 [[CfgS:GetLocalFriendCodeSeed|LocalFriendCodeSeed]]>-<printed hex u64 [[FRDU:GetMyFriendKey|Friend]] [[FRDU:PrincipalIdToFriendCode|Code]]>/<text [[CVer|system]] [[NVer|version]]>/<unknown decimal value>/<[[Cfg:GetSystemModel|system model number]]></tt>
<tt><user agent codename>-<user agent version>/<printed hex u64 [[CfgS:GetLocalFriendCodeSeed|LocalFriendCodeSeed]]>-<printed hex u64 [[FRDU:GetMyFriendKey|Friend]] [[FRDU:PrincipalIdToFriendCode|Code]]>/<text [[CVer|system]] [[NVer|version]]>/<CTRSDK version of sysmodule>/<[[Cfg:GetSystemModel|system model number]]></tt>
The codename can be set to either <tt>PBOS</tt> (Production BOSS?) or <tt>DBOS</tt> (Development BOSS?) depending if the console is a [[Configuration_Memory#UNITINFO|retail]] unit. As of system version 11.17, the user agent version is hardcoded to 8.0 and the decimal value is set to 62452 (0xF3F4).
The codename can be set to either <tt>PBOS</tt> (Production BOSS?) or <tt>DBOS</tt> (Development BOSS?) depending if the console is a [[Configuration_Memory#UNITINFO|retail]] unit. As of system version 11.17, the user agent version is hardcoded to 8.0 and the CTRSDK version is set to 62452 (0xF3F4).
No user-agent is used for plaintext HTTP requests with SpotPass.
No user-agent is used for plaintext HTTP requests with SpotPass.
| 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 at 0xC may be a serial number which is increased every time someone requested to sign and create a boss container for a 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).
The boss system module v13314 begins at address 0x0010eb98 with the function for parsing the BOSS header.
=== Content Header ===
=== Content Header ===
|}
|}
Followed by the Payload Content Header without the hash and signature (first 0x1C bytes) and the actual payload.
Followed by the Payload Content Header without the hash and signature (first 0x1C bytes) and the actual payload.
==Tools==
* [http://wiiucodes.ddnss.eu/tools/BossDecryptor3DS.zip BossDecryptor3DS] Decrypts an encrypted boss container
* [http://wiiucodes.ddnss.eu/tools/BossEncryptor3DS.zip BossEncryptor3DS] Builds and encrypts a file into a boss container
[[Category:Nintendo Software]]
[[Category:Nintendo Software]]