MK = PRF'(IK'|CK',"EAP-AKA'"|Identity)
    K_encr = MK[0..127]
    K_aut  = MK[128..383]
    K_re   = MK[384..639]
    MSK    = MK[640..1151]
    EMSK   = MK[1152..1663]