![\"L\u00ebshimi](\"\/wp-content\/uploads\/2021\/07\/1fcd18de882eafe2ddc0858bb41856d0.png\")
<\/center> <\/p>\nFunksioni hash \u00ebsht\u00eb i dizajnuar p\u00ebr aplikime t\u00eb tilla si kontrolli i integritetit t\u00eb skedar\u00ebve, autentikimi i mesazheve dhe formimi i t\u00eb dh\u00ebnave p\u00ebr n\u00ebnshkrime dixhitale kristografike. BLAKE3 nuk \u00ebsht\u00eb e destinuar p\u00ebr hashimin e fjal\u00ebkalimeve, pasi \u00ebsht\u00eb e fokusuar n\u00eb llogaritjen maksimale t\u00eb shpejt\u00eb t\u00eb hash-\u00ebve (p\u00ebr fjal\u00ebkalime rekomandohet t\u00eb p\u00ebrdoren funksione hash t\u00eb ngadalta si yescrypt, bcrypt, scrypt ose Argon2). Funksioni hash i shqyrtuar nuk \u00ebsht\u00eb i ndjesh\u00ebm ndaj madh\u00ebsis\u00eb s\u00eb t\u00eb dh\u00ebnave t\u00eb hash-uara dhe \u00ebsht\u00eb i mbrojtur nga sulmet p\u00ebr gjenerimin e kolizion\u00ebve dhe gjetjen e pre-image. <\/p>\n
Algoritmi \u00ebsht\u00eb zhvilluar nga specialist\u00eb t\u00eb njohur n\u00eb kriptografi (Jack O\u2019Connor, Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O\u2019Hearn) dhe vazhdon zhvillimin e algoritmit BLAKE2 duke p\u00ebrdorur mekanizmin Bao p\u00ebr kodimin e pem\u00ebs s\u00eb lidhjeve t\u00eb bllokut. Ndryshe nga BLAKE2 (BLAKE2b, BLAKE2s), n\u00eb BLAKE3 \u00ebsht\u00eb propozuar nj\u00eb algorit\u00ebm i vet\u00ebm p\u00ebr t\u00eb gjitha platformat, i papavarur nga bit\u00ebt dhe madh\u00ebsia e hash-it. <\/p>\n
Rritja e performanc\u00ebs \u00ebsht\u00eb arritur fal\u00eb reduktimit t\u00eb numrit t\u00eb raundeve nga 10 n\u00eb 7 dhe heshit t\u00eb blloqeve n\u00eb cop\u00ebza prej 1 KB. Sipas deklarat\u00ebs s\u00eb krijuesve, ata gjet\u00ebn nj\u00eb prov\u00eb matematikore bind\u00ebse se mund t\u00eb mjaftoheshin me 7 raunde n\u00eb vend t\u00eb 10, duke ruajtur t\u00eb nj\u00ebjtin nivel q\u00ebndrueshm\u00ebrie (p\u00ebr t\u00eb ilustruar, mund t\u00eb jepet shembulli i p\u00ebrzierjes s\u00eb frutave n\u00eb nj\u00eb mikser \u2014 pas 7 sekondash frutat jan\u00eb p\u00ebrzier plot\u00ebsisht, dhe 3 sekonda shtes\u00eb nuk do t\u00eb ndikojn\u00eb n\u00eb konsistenc\u00ebn e p\u00ebrzierjes). Megjithat\u00eb, disa studiues shprehin dyshimin, duke e konsideruar se edhe n\u00ebse p\u00ebr momentin 7 raunde jan\u00eb t\u00eb mjaftueshme p\u00ebr t'u p\u00ebrballur me t\u00eb gjitha sulmet e njohura mbi hash-et, 3 raunde shtes\u00eb mund t\u00eb jen\u00eb t\u00eb dobishme n\u00eb rast se zbulohet ndonj\u00eb sulm i ri n\u00eb t\u00eb ardhmen. <\/p>\n
Sa i p\u00ebrket ndarjes n\u00eb blloqe, n\u00eb BLAKE3 rrjedha ndahet n\u00eb copa prej 1 KB dhe \u00e7do cop\u00eb heshtohet n\u00eb m\u00ebnyr\u00eb t\u00eb pavarur. N\u00eb baz\u00eb t\u00eb hash-eve t\u00eb copave, mbi baz\u00ebn e pem\u00ebs binare Merkle formohet nj\u00eb hash i madh. Kjo ndarje lejon zgjidhjen e probl\u00e9m\u00ebs s\u00eb paralelizimit t\u00eb p\u00ebrpunimit t\u00eb t\u00eb dh\u00ebnave gjat\u00eb llogaritjes s\u00eb hash-it \u2014 p\u00ebr shembull, mund t\u00eb p\u00ebrdoren instruksione 4-t\u00ebrore SIMD p\u00ebr llogaritjen e nj\u00ebkohshme t\u00eb hash-eve t\u00eb 4 bllok\u00ebve. Funksionet tradicionale t\u00eb hash-it SHA-* p\u00ebrpunojn\u00eb t\u00eb dh\u00ebnat n\u00eb m\u00ebnyr\u00eb t\u00eb nj\u00ebpasnj\u00ebshme. <\/p>\n
Ve\u00e7orit\u00eb e BLAKE3: <\/p>\n
- \n
- Performanc\u00eb e lart\u00eb, BLAKE3 \u00ebsht\u00eb ndjesh\u00ebm m\u00eb i shpejt\u00eb se MD5, SHA-1, SHA-2, SHA-3 dhe BLAKE2. <\/li>\n
- Siguria, duke p\u00ebrfshir\u00eb q\u00ebndrueshm\u00ebrin\u00eb ndaj sulmit t\u00eb zgjatjes s\u00eb mesazhit, t\u00eb cilit i n\u00ebnshtrohet SHA-2;\n
- Jan\u00eb t\u00eb disponueshme versione n\u00eb gjuh\u00ebn Rust, t\u00eb optimizuara p\u00ebr p\u00ebrdorimin e instrukcioneve SSE2, SSE4.1, AVX2, AVX-512 dhe NEON. <\/li>\n
- Sigurimi i paralelizimit t\u00eb llogaritjeve n\u00eb \u00e7do num\u00ebr t\u00eb fijeve dhe kanaleve SIMD. <\/li>\n
- Mund\u00ebsia e p\u00ebrdit\u00ebsimit inkremental dhe p\u00ebrpunimit t\u00eb verifikuar t\u00eb rrjedhave; <\/li>\n
- P\u00ebrgatitja n\u00eb modus PRF, MAC, KDF, XOF dhe si nj\u00eb hash i zakonsh\u00ebm; <\/li>\n
- Nj\u00eb algorit\u00ebm i vet\u00ebm p\u00ebr t\u00eb gjitha arkitektur\u00ebt, i shpejt\u00eb si n\u00eb sistemet x86-64 ashtu edhe n\u00eb procesor\u00ebt 32-bit\u00eb ARM. <\/li>\n<\/ul>\n
Dallimet kryesore t\u00eb BLAKE3 n\u00eb krahasim me BLAKE2: <\/p>\n