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: I homai he tāuru 6-patu, kitea te putanga 4-patu mā te tīpako i te rarangi mā te whakamahi i te waho rua moka (te tuatahi, me te whakamutunga moka), me te tīwae mā te whakamahi i te roto e wha moka. Hei tauira, he tāuru "011011" he moka waho "01" me moka roto "1101"; te putanga e hāngai ana ka waiho "1001".Ko te 8 S-pātaka o DES i te kaupapa o te ako kaha mo nga tau maha i roto i te āwangawanga e kua whakatokia he backdoor <unk> he whakaraerae mohiotia anake ki ona kaihoahoa <unk> i roto i te whakamunatanga. i te mutunga i whakaputaina te paearu hoahoa S-pātaka (i roto i Coppersmith 1994) i muri i te rediscovery tūmatanui o te cryptanalysis rerekētanga, e whakaatu ana i kua āta tuned ratou ki te whakapiki i te ātete ki tenei pato motuhake.
te kōwhiri i te rarangi mā te whakamahi i te waho rua moka (te moka tuatahi, me te whakamutunga), me te tīwae mā te whakamahi i te roto e wha moka