Protocols/OSCAR/SNAC/BUCP CHALLENGE RESPONSE

OSCAR Protocol

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Foodgroups

OSERVICE (0x0001)

BUCP (0x0017)

This is the SNAC sent by the server in reply to BUCP__CHALLENGE_REQUEST. After this is sent, the client should send a BUCP__LOGIN_REQUEST SNAC, where the challenge it recieves here is used when hashing the password.

SNAC Header

00 17   word   SNAC foodgroup  00 07   word   SNAC subgroup  00 00   word   SNAC flags  00 00 00 00   dword   SNAC request ID SNAC Data The SNAC data is as follows, in this order: Challenge length (uint16/word) Challenge (bytes) SNAC Dump Example dump (from NINA's servers - dump contains a FLAP header): 0000 2a 02 00 01 00 16 00 17 00 07 00 00 00 00 00 00 *............... 0010 00 0a 36 30 30 35 38 35 35 39 34 36 ..6005855946 Note for server developers: I'm not quite sure if there is anything fancy going on in the challenge generation in NINA, but judging by the packet dumps above, I simply just made a string with 10 random numbers, as seen in my server