AES:ʻIkepili Encryption

Oiaio no, he nui kamepiula mea hoʻohana keʻeʻe ma ka Internet (a ole wale) i lohe ai i keia makahiki, e like me ka ʻikepili encryption AES. He aha ke ano o ka'ōnaehana, mea algorithms mea hoʻohana a me ka mea ua noi, mai ka manaʻoʻano i kaupalena 'pōʻai ana o kanaka. Ano o mea hoʻohana mea ana a me ka nui ike a me ka mai i pono ai. Naʻe, manao keia cryptographic'ōnaehana, pakahi aku la ia me ka delving i loko o eiiieaena makemakika helu a me nā papakuhikuhi i makemake e comprehensible i kekahi kanaka.

He aha ka ka AES-encryption?

E ka hoʻomaka me ka mea i ka'ōnaehana iho nei he lākou no algorithms e hūnā i ka loiloi mua nānaina o kekahi pū i hiki, i loaa ole waiho ia ma ka hoʻohana ma ke kamepiulaʻikepili. Loa pinepine ka mea, ua hoʻohana 'ia ma ka Internet loea i koi' ia e hōʻoia 'piha hūnā' ia 'ana o ka' ike, a pili ia i ka ai-kapaia symmetric encryption algorithms.

AES encryptionʻano komo ai i ka hoʻohana 'ana o ka huli' ike i loko o ka hoomaluia ke kino, a me ka inverse omńkalakala o ka ia kī, a ua ike ia, a me ka hoʻouna 'a me ka loaa anaʻaoʻao, e like symmetric encryption, ma i na ki elua i hoakaka no ka noi - e hamama ana, a paa hou mai la. Penei, ia mea maʻalahi ke manao nei makou, ina na aoao elua i ka pololei kī, ua lawe mai ka encryption a me ka decryption kaʻina wale lawa.

A wahi moʻolelo

AES-encryption no ka manawa mua i olelo ia ma ka makahiki 2000, ka wā i hope no Des'ōnaehana koho Competition, a i ka hae ma ka United States mai 1977, ka uwa maila ua ka Rijndael algorithm.

I ka 2001, AES-nenoaiu Ua kauoha aku hookama like me ka hou Pekelala Ikepili Encryption Koo, a ua mai ua hoʻohana kaiāulu.

Kind AES encryption

Evolution algorithms komo pū kekahi mau kahua o ka hoʻonaʻauao, aʻano nui, ua pili i māhuahua kī lōʻihi. I kēia manawa, aia nō ka papa kuhikuhi hoailona ia mea ekolu: AES-128 encryption, AES-192 a me AES-256.

Ka inoa olelo no ka iho. Digital signage hoʻopili like me ka lōʻihi o ke ki ia, kaheaia i loko o nā kānaka. Nō hoʻi, pili AES-encryption i ka aeieʻano e hana 'ana me ka haka lōʻihiʻikepili huahelu, hoʻopā'ālua kela mea keia mea o lakou, e like ma-laina algorithms e hana i hookahi hōʻailona hamama memo, unuhi ia ma ka hoʻopā'āluaʻia palapala. Ma ka AES aeie lōʻihi o 128'āpana.

Olelo ana i ka 'ōlelo o ka' epekema, ka ia algorithm e hoʻohana AES-256 encryption, olelo mai ana ma luna o ka muli o polynomial e hoohalike ai ia o nā hana a me nā loina i loko o ka aaioee o elua-dimensional huihui ikehu lā (matrices).

Pehea 'aʻole ia hana?

Ke algorithm hana loa eiiieaen, akā, komo ai i ka hoʻohana ana o kekahi mau kumu o hehee wale. Initially, elua-dimensional mua ua hoʻohana 'ia, i ka huli ana pōʻaiapuni (puni), a ki a me nā papa, a e hoole loiloi mua permutation.

Keʻikepili encryption ninoieo o kekahi mauʻanuʻu:

• i ka ho omaulia ana o nā mea a pau i ka puni kī;
• ʻai hakahaka me ka hoʻohana 'S-Box ka papaʻaina;
• hoʻololi palapala hoʻohana kekahi mau mea (e nānā huahelu ma luna.);
• hoʻohuihuiʻikepili loko o kēlā me kēia kolamu o ka'ōpū mai (punahelu);
• Eia hou kekahi shape a me ka poepoe kī.

Deciphering ua hana i loko aʻe o ka papa, akā, ma kahi o ka papaʻaina S-Box papaaina pili inverse-i? Iecaianoaaiiuo, i i kau aʻela ma luna.

Inā lakou i mea hoike, ina ka ki lōʻihi o 4'āpana Pono e iterate ma nā mea a pau 16 kahua o ka hoʻonaʻauao (puni), i ka mea pono, e nānā hiki a pau pu palu ana, e hoomaka ana me ka 0000 a me ka pau ana 1111. O ka holo ana, ua hoomalu mai hemo mai i koke lawa. Akā, inā e lawe i ke ki hou no ka 16-iki iho la keia e pono ai 65.536 anuu, a no ka 256-iki - 1.1 m 10 ^77. A e like me ka maopopo 'Amelika hoʻomalu, ma luna pono koho o ka hui pu ana, (ki) e lawe ma kahi o 149 trillion makahiki.

I pili ia oe i kūkulu i ka mea ulana pukapuka ma ka hana: AES paha TKIP?

Mākou e huli i ka hoʻohana 'ana o AES-256 e encrypt hoouna aku, a loaa i loko o nā pūnaewele latike i nā ikepili.

E like me ka rula, i kekahi mīkini ala hele (mīkini ala hele), loaʻa nō kekahi mau koho, e koho mai: wale ka AES, TKIP, a me ka wale AES + TKIP. Ua hoʻohana 'ia ke kaumaha ma muli o ka Hola Pūnaewele (WEP ole WEP2). Akā,! System TKIP mea obsolete no ka mea, i ka haahaa loa o ka hoomalu ana a me kākoʻo 802.11n hoʻolele mokulele i kaʻikepili ana e oi 54 Mbits / mau. Ke'ī mai, i ka hopena o ka makakoho i AES ka mālama 'ano WPA2-PSK ua maopopo i, eia nae oe ke hoʻohana nā algorithms hui kaulua.

Ninaninau 'ana i ka pono a me ka maluhia o AES algorithms

I loko nō ka leo o ka olelo o ka poe akamai, AES algorithms i nō kūlana ma ka kumumanaʻo, no ka mea, o ka loa 'ano o ka encryption mai i ka mea algebraic hōʻikeʻano. A uaʻikeʻia e Niels Ferguson. A ma ka 2002, o Iosepa a me Nikolya Kurtua Pepshik paʻi ka 'atikala hoapono ana i kekahi ikehu hoouka XSL. Naʻe, ka mea i loko o ka 'epekema honua ua kena ae la i ka hailona o ka hakaka, a me kekahi i manao ai lākou i ka ho omaulia hewa.

ka mea mahuʻi Ua i i ka 2005 i ka attacker ke hoʻohana i ke kolu-aoao auwai a,ʻaʻole pono makemakika. I ka Ia manawa kekahi o ka ho'āhewa wale i pōpilikia ki ma hope o 800 ana, oiai ka mea'ē aʻe iā ia 2 ³² ana (walu o ka a).

Me ke kanalua, i keia la keia ano, a hiki e manaoia kekahi o ka loa holomua, ina ole kekahi akā. A mau makahiki aku nei ma luna o ka Internet nalu o ka mea hoʻomaʻi ho'āhewa wale, ma a ka mea hoʻomaʻi coder (a concurrently i extortionist), penetrating kamepiula 'ē aʻe maopopo hoʻopā'āluaʻiaʻikepili e noi ana omńkalakala no ka tidy dala o ke kala. Ma keia hihia, i ka lono kaulana i encryption ua hana hoʻohana AES1024 algorithm, i ka manaoio a nei, mai nei.

Like ia paha ole, akā,ʻo ka loa pono-ike nā mea haku polokalamu o ka mea pale mū holapū lako polokalamu, a me ka "Kaspersky Keʻena", ka wā e ho'āʻo ana e decryptʻikepili ua powerless. He nui akamai ua ae ia ka mea inoa haumia mea hoʻomaʻi I Love You, koke iho mailoko miliona o kamepiula 'ē aʻe a puni ka honua, a luku aku ia lakou nui' ike i loko o kā i ka make māinoino huli mai e e childish prattle. Eia hou, I Love You More i nona ma ka Media, a me ka mea hou mea hoʻomaʻi i ke kōkua o ke anamanaʻo ike nui wale hui. Eia naʻe, e hoʻike akaka iʻaneʻi ka mea i hoʻohana encryption AES-1024, aole kekahi e hiki.

ka hopena

Inā kekahi nui helu mai, ma kekahi hihia, ua hiki ke olelo aku i ka AES-encryption mea ma kahi loihi ka loa nui a me ka palekana,ʻaʻohe mea i ka lōʻihi o ke kī i hoʻohana. 'Aʻole surprisingly, i keia hae ua hoʻohana' ia i loko o ka hapanui cryptosystems, a mai ka pono laula kuanaʻike ma luna o ka ulu ana, a me ka hana hou i loko o ka foreseeable wā e hiki mai, o ka oi aku like loa paha hiki e, a hoʻohuiʻia kekahi mauʻano o ka encryption i loko o kekahi mokuna (e laʻa me, concurrent pono o symmetric a me ka asymmetric a aeie, a kahawai encryption).