NWM Services: Difference between revisions

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All UDS local-WLAN communications have the CCMP key for data encryption generated via NWM module. The CCMP key passed to nwm::CEC commands(stored in a 0x44-byte input structure) for [[StreetPass]] 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.

==Application data transfer==

The protocol used for sending/receiving data over the network with UDS by official applications is [[PRUDP]](in some cases at least). In some cases at least this is with PRUDPS(additional encryption layer).

==Structure used for generating the CTR for CCMP key generation==

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 All UDS local-WLAN communications have the CCMP key for data encryption generated via NWM module. The CCMP key passed to nwm::CEC commands(stored in a 0x44-byte input structure) for [[StreetPass]] 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.
+==Application data transfer==
+The protocol used for sending/receiving data over the network with UDS by official applications is [[PRUDP]](in some cases at least). In some cases at least this is with PRUDPS(additional encryption layer).
 ==Structure used for generating the CTR for CCMP key generation==