NWM Services: Difference between revisions

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=NWM service "nwm::TST"=

=~~UDS~~ Local-WLAN=

=Local-WLAN=

UDS is used for 3DS<>3DS local-WLAN communications, and for 3DS<>Wii U communications. The latter is mainly only used for multi-player in games.

All ~~UDS~~ local-WLAN communications have the CCMP key for data encryption generated ~~the same way~~ via NWM module. The input data used with [[Process_Services|EncryptDecryptAes]] with [[PSPXI:EncryptDecryptAes|keytype1]] is a MD5 hash over an input passphrase. This input passphrase is fixed for [[Download Play]], it's unique per local-WLAN protocol. The CTR is a MD5 hash over the below 0x10-byte structure. The output from encrypting that data with AES-CTR is the final CCMP key.

All local-WLAN communications have the CCMP key for data encryption generated via NWM module. The [[StreetPass]] CCMP key is generated this way as well, the input "passphrase" is generated by the CECD module. The input data used with [[Process_Services|EncryptDecryptAes]] with [[PSPXI:EncryptDecryptAes|keytype1]] is a MD5 hash over an input passphrase. This input passphrase is fixed for [[Download Play]], it's unique per local-WLAN protocol. The CTR is a MD5 hash over the below 0x10-byte structure. The output from encrypting that data with AES-CTR is the final CCMP key.

==Structure used for generating the CTR==

@@ Line 17: / Line 17: @@
 =NWM service "nwm::TST"=
-=UDS Local-WLAN=
+=Local-WLAN=
 UDS is used for 3DS<>3DS local-WLAN communications, and for 3DS<>Wii U communications. The latter is mainly only used for multi-player in games.
-All UDS local-WLAN communications have the CCMP key for data encryption generated the same way via NWM module. The input data used with [[Process_Services|EncryptDecryptAes]] with [[PSPXI:EncryptDecryptAes|keytype1]] is a MD5 hash over an input passphrase. This input passphrase is fixed for [[Download Play]], it's unique per local-WLAN protocol. The CTR is a MD5 hash over the below 0x10-byte structure. The output from encrypting that data with AES-CTR is the final CCMP key.
+All local-WLAN communications have the CCMP key for data encryption generated via NWM module. The [[StreetPass]] CCMP key is generated this way as well, the input "passphrase" is generated by the CECD module. The input data used with [[Process_Services|EncryptDecryptAes]] with [[PSPXI:EncryptDecryptAes|keytype1]] is a MD5 hash over an input passphrase. This input passphrase is fixed for [[Download Play]], it's unique per local-WLAN protocol. The CTR is a MD5 hash over the below 0x10-byte structure. The output from encrypting that data with AES-CTR is the final CCMP key.
 ==Structure used for generating the CTR==