
nae loga

cryptography mein, nudes ack samamit kunji khand sifer haye. ise robbert scott dwara sambhaavit days pratisthaapan key roop mein 1984-1985 mein banaaya gayaa thaa.
isake naam key bavjood, yeh days seey naheen liya gayaa haye aur isaki sanrachana kaafee alag haye. ack days pratisthaapan key roop mein iska ichchit sthaan abb jyaadaatar aeye. ee. aiss. dwara bharaa gayaa haye. algorithm koo 1996 mein ack sambandhit-kunji hamale kaa mukabala karane key liye ack sanshodhit kunji anusuchi key saath sanshodhit kiya gayaa thaa; iss sanskaran koo kabhi-kabhi nudes-96 key roop mein sandarbhit kiya jaataa haye.
2004 mein, scott ney vigyaan parr kuchh tippaniyan post keen.nudes key design key peechhe kii prerana aur usane sifer koo adhik surakshit banaane key liye alag tareeke seey kyaa kiya hoga, iss parr pratibimbit kartaa haye.
algorithm.
days key vipareet, neude mein koee bitt-leval kramparivartan naheen haye, jisase ise software mein lagu karna aasaan hoe jaataa haye. sabhi operation poore bites parr kiye jaate hain. yeh ack utpaad sifer haye, jisamen 64-bitt detta block parr kiye gaye 17 round hotey hain aur 120-bitt kunji kaa upayog kartaa haye.
pratyek round mein, upa-kunji samagri koo detta key 1-bite upa-block key saath exore kiya jaataa haye, phir ack aiss-boxes key madhyam seey feed kiya jaataa haye, jisake output koo phir detta key ack anya upa-block key saath exore kiya jaataa haye. kull milakar, pratyek daur mein 8 xors kiye jaate hain. aiss-boxes sanyukt raajya america kii swatantrata kii ghoshana (ack shoonya-oopar-merrie-baju sankhya key roop mein upayog kiya jaataa haye) seey liya gayaa haye.
dou round key pratyek sett mein saat 1-bite upa-kunji kaa upayog kiya jaataa haye, joe kunji key 56 bits koo bites mein vibhajit karke praapt kiye jaate hain. phir agale dou daur mein upayog key liye kunji koo 56 bits ghumaaya jaataa haye.
gupt vishleshan.
nudes parr kewal ack chhoti matra mein gupt vishleshan prakaashit kiya gayaa haye. designer ney dikhaaya kii nudes saat round key baad poorna himskhalan prabhaav pradarshit karate hainh pratyek cyfertext bitt pratyek saade paath bitt aur pramukh bitt parr nirbhar kartaa haye.
nudes mein vahee poorak guna haye joe days mein haih arthaat, yadi
taba
kahaan
x" kaa bitwise poorak haye. iska matlab haye kii ack broot bull hamale key liye kaary kaarak 2 key kaarak seey cumm hoe jaataa haye. ellie biham ney yeh bhee dekhaa kii sabhi kunji aur detta bites mein ack poorna bite koo badalane seey ack anya poorak guna hotaa haye. isase kaary kaarak mein 28 pratishat kii kamee aatee haye.
biham kaa sambandhit-kunji hamla 233 chune hue-kunji chune hue saade paathon key saath nae koo toda sakata haye, jiska arth haye kii nae days days key roop mein surakshit naheen hain.
johnn kelsey, broose snear aur david wagner ney nudes parr ack aur hamla vikasit karane key liye sambandhit-kunji gupt vishleshan kaa upayog kiya; isake liye 232 gyaat saade paath aur ack sambandhit kunji kii aavashyakta hoti haye.

