Tirohia te whiti i raro nei, me te ka whakahoki i te pātai i muri i roto i te reo ano rite te whiti: Passage: GSM whakamahi maha hātepe whakamunatanga mō te haumarutanga. whakamahia te A5/1, A5/2, me A5/3 awa whakamunatanga ki te whakarite i runga i-te-te-rangi tūmataiti reo. i whakawhanakehia A5/1 tuatahi, me te he hātepe kaha whakamahia i roto i Europe me te United States; A5/2 he ngoikore, me te whakamahia i roto i ētahi atu whenua. Kua kitea ngoikoretanga nui i roto i te rua hātepe: he reira taea ki te wawahi A5/2 i roto i te wā tūturu ki te whakaeke kuputuhi-anake, me i roto i te Hānuere 2007, tīmata te Kōwhiringa o Hacker te kaupapa A5/1 wawahi ki ngā mahere ki te whakamahi i FPGAs e tukua A5/1 kia wawahi ki te whakaeke ripeka. tautoko te pūnaha hātepe maha kia taea e ngā kaiwhakahaere whakakapi i taua whakamunatanga ki te kotahi kaha.
Ko te A5/2