1. Attachments are working again! Check out this thread for more details and to report any other bugs.

SKS Key Fob Functionality

Discussion in 'Gen 2 Prius Main Forum' started by MBranstein, Oct 26, 2005.

  1. MBranstein

    MBranstein New Member

    Joined:
    Sep 13, 2005
    288
    0
    0
    Location:
    Prospect, KY
    Vehicle:
    2006 Prius
    Does anyone have any in-depth knowledge of the SKS Key Fob functionality? Is it simply an RFID-like device, or does it promote a two-factor authentication link between the key and the car?
     
    #1 MBranstein, Oct 26, 2005
  2. DaveG

    DaveG Member

    Joined:
    Jan 20, 2004
    806
    6
    0
    Location:
    Vancouver, BC
    Vehicle:
    2004 Prius
    I seem to recall reading somewhere that the car transmits a code to the key, the key encrypts it with it's internal 64-bit encryption code and sends it back to the car.

    Unfortunately I don't have a source - I read it almost 2 years ago when the '04s were just coming out, and I don't remember where...

    Dave
     
    #2 DaveG, Oct 27, 2005
  3. jayman

    jayman Senior Member

    Joined:
    Oct 21, 2004
    13,439
    641
    0
    Location:
    Winnipeg Manitoba
    Vehicle:
    2004 Prius
    #3 jayman, Oct 27, 2005
  4. DanMan32

    DanMan32 Senior Member

    Joined:
    Aug 27, 2004
    3,799
    26
    0
    Location:
    Tampa Bay, FL
    I do know that when the fob transmits, whether for SKS or remote lock operation, it is rolling code. However, I don't know if the passive mode when you put it in the slot is also rolling code. It doesn't require the use of the fob's batteries, and it does have a separate registration proceedure than the SKS or remote lock function.
     
    #4 DanMan32, Oct 27, 2005
(You must log in or sign up to post here.)