On Wed, 2002-10-02 at 08:08, Pat Calhoun wrote:
> Does anyone have a clue how the AP selects the right key to use as the
> key-mapping-key? 

It can either:

invent a random key-mapping (unicast) key and send it to the supplicant
in an EAPOL-Key message signed with the MS-MPPE-Send-Key and encrypted
with the MS-MPPE-Recv-Key

or

send the supplicant an EAPOL-Key message with an empty Key field, which
means use the specified number of bits from the MS-MPPE-Send-Key as the
key-mapping key.



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