A-GPS, SUPL protocol, want to know about ' PP2_SPC_Master_key'

[kumarvkv]

Hi All,

I am developing A-GPS using SUPLv1.0 protocol.

In Network initiated (server initiated) and Non-Proxy scenario,
1)(A-GPS)Server -------->SUPL_INIT------------->Client(Mobile Phone)
SUPL_INIT is through SMS/WAP
SUPL_INIT message contains session-id, address of the SPC, proxy/non-proxy mode indicator, Key Id, MAC and the intended positioning method.
2)SUPL<-------------SUPL_AUTH_REQ<-------------Client
SUPL_AUTH_REQ message contains session-id, key-id 2 and SET_nonce.
Session-id is generated by the client
SET_nonce is 16-byte random number.
key-id2 corresponds to 'PP2_SPC_Master_key', this is to be generated/created by the client(Mobile phone).
This key, PP2_SPC_Master_key, is used to derive 'PSK_SPC_key' which is used in TLS-PSK authentication between client and server.
So, I want to know about the 'PP2_SPC_Master_key'.
Does any one of you come across this key 'PP2_SPC_Master_key'.
How can we get/read this?
What is the procedure?
I think this is operator provisioned key.
Do you know the exact location, means EF file address.
Thanks in anticipation.
VKV

[symbianyucca]

I'm rather sure that you are not supposed to use the SUPL server directly, but just use the LBS APIs provided by the platform.

[kumarvkv]

Hi symbianyucca,

Thanks for your reply.

Could you please elaborate on using the LBS API for fetching 'PP2_SPC_Master_key'.
Is there any API in Symbian or elsewhere to provide this key information?
If yes, providing the API information would be of great help to me.

Regards
kumarvkv