Ithuluzi Eliphephile le-RSA
Khiqiza okhiye, bhala ngemfihlo futhi ususe ukubethelwa kwemiyalezo, ngqo esipheqululini sakho. Umthombo ovulekile futhi ugxile kubumfihlo.
Yini i-RSA nokuqhathanisa
I-Asymmetric Encryption (RSA)
I-RSA iyizinga legolide lokubethela kwe-Asymmetric, njengoba kuchazwe iziphathimandla ezifana ne-NIST (FIPS 186) ne-IETF (RFC 8017).
Isebenzisa okhiye ababili: u-Public Key owodwa ukukhiya idatha kanye no-Private Key owodwa ukuyivula. Lokhu kuxazulula "Inkinga Yokushintshana Kokhiye", ukuvumela ukuxhumana okuphephile ngaphandle kokwabelana ngezimfihlo kusengaphambili.
Vs. Symmetric Encryption (AES)
Ukubethela kwe-Symmetric (njenge-AES) kusebenzisa i-single key eyodwa kokubili ukukhiya nokuvula. Kuyashesha kakhulu kodwa kudinga ukudluliselwa kokhiye okuphephile.
The Standard Practice: Amasistimu esimanje asebenzisa i-RSA ukuze ashintshisane ngokuphephile nge-Secret Key engahleliwe yokubethela okulinganayo (i-Hybrid Encryption), ihlanganisa ukwethembeka kwe-RSA nesivinini se-AES.
Ukuhlaziywa Kokuphepha Kosayizi Wokhiye
| Usayizi | Ubunzima Bokuphula (Izindleko/Isikhathi) | Ubuthakathaka | Icala Lokusetshenziswa |
|---|---|---|---|
| 1024-bit | Feasible. Iphulwe izinhlangano ezinkulu. Izindleko Ezilinganisiwe: ~$10M izingxenyekazi zekhompyutha ~unyaka ongu-1. | Ibhekwa njenge-Broken. Isengozini yokuhlaselwa kokubala kwangaphambili njenge-Logjam. Kwenele kuphela ukuhlolwa kwesistimu endala okungekho bucayi. | Amasistimu amadala, ukuhlolwa kwesikhathi esifushane. |
| 2048-bit | Infeasible (Current Tech). Izigidigidi zeminyaka namakhompyutha akudala. Idinga ama-qubits ayizigidi ezingu-~14 (Quantum). | Kuphephile Okujwayelekile. Abukho ubuthakathaka obaziwayo bakudala. Isengozini yamaKhikompyutha we-Quantum anamandla esikhathi esizayo (i-Shor's Algorithm). | IWebhu (HTTPS), Izitifiketi, I-imeyili. |
| 4096-bit | Extreme. Kunzima kakhulu kune-2048. Ubungozi obunganakiwe emashumini eminyaka. | Kweqile kwabaningi. "Ubuthakathaka" obuyinhloko izindleko zokusebenza (ukusetshenziswa kwe-CPU/Ibhethri). Ubungozi be-Quantum obufanayo no-2048, buyabambezela nje. | Amadokhumenti ayimfihlo kakhulu, Izitifiketi zempande. |
Isebenza Kanjani
Khiqiza Okhiye
Dala ipheya yokhiye abaxhumene ngokwezibalo. Yabelana ngokhiye Womphakathi, gcina Ukhiye Wangasese uphephile.
Bhala Idatha Ngemfihlo
Abathumeli basebenzisa Ukhiye wakho Womphakathi ukukhiya umlayezo. Uma usukhiyiwe, ngisho nabo abakwazi ukuwuvula.
Susa Ukubethelwa Kwedatha
Usebenzisa Ukhiye wakho Wangasese oyimfihlo ukuvula umlayezo futhi ufunde umbhalo wokuqala.
Amazinga & Izinhlangano Ezethembekile
I-Cryptography yesimanje incike kumazinga avulekile nezinhlangano ezethembekile. Silandela i-"Golden Trio" yegunya.
"Umenzi Wemithetho" we-crypto yesimanje. Umshicileli we-FIPS 186 (Izinga le-RSA). Uma i-NIST incoma Izinga, imboni iyalandela.
Abadali bamanuwali okusebenza kwe-inthanethi (RFCs). Bagcina i-RFC 8017 (PKCS #1), ukucaciswa kobuchwepheshe okuqinisekile kwe-RSA.
Injini enika amandla iwebhu ephephile (HTTPS). Okhiye bethu bakhiqizwa ukuthi bahambisane ngokugcwele ne-OpenSSL kanye ne-ecosystem ebanzi ye-PKI.
I-RSA Isifundo Esinemininingwane
Ukungena okujulile kumakhenikha wesistimu yemfihlo ye-RSA.
1. Ukukhiqizwa Kokhiye
Kukhiqizwa ipheya yokhiye:
Public Key: Can be shared openly. Used to encrypt messages.
Private Key: Must be kept SECRET. Used to decrypt messages.
2. Inqubo Yokubethela
Umthumeli usebenzisa i-Public Key yomamukeli ukubhala umlayezo ngemfihlo. Ngemva kokubethela, umlayezoubukeka njengombhalo ongahleliwe futhi awukwazi ukuqondwa ngaphandle kokhiye wangasese.
3. Inqubo Yokussusa Ukubethelwa
Umamukeli usebenzisa i-Private Key yabo ukususa ukubethelwa komlayezo emuva kumbhalo ofundekayo. Ngokwezibalo, ukhiye wangasese kuphela ongaguqula ukusebenza okwenziwe ukhiye womphakathi.
Inothi ngokuphepha
Ungalinge wabelane ngokhiye wakho Wangasese. Leli thuluzi lisebenza 100% esipheqululini sakho. Nokho, ngezimfihlo zenani eliphezulu, ngaso sonke isikhathi sebenzisa amathuluzi endabuko asunguliwe noma amamojula okuphepha wehadiwe.
Imibuzo Ejwayelekile Ukubuzwa
Ingabe idatha yami ithunyelwa kuseva?
Cha. Konke ukusebenza kokubethela nokususa ukubethela kwenzeka ngokuphelele esipheqululini sakho kusetshenziswa i-JavaScript. Abukho okhiye noma idatha nanini edluliswayo.
Ngingakusebenzisa lokhu okwezimfihlo zokukhiqiza?
Ngenkathi izibalo kuyi-RSA ejwayelekile, iziphequluli zewebhu zingaba sengozini ezandisweni noma ezindaweni ezisengozini. Ngokhiye ababalulekile bokuphepha okuphezulu, sebenzisa amathuluzi angaxhunyiwe ku-inthanethi.
Iuphi usayizi wokhiye okufanele ngiwusebenzise?
I-2048-bit yizinga lokuphepha lamanje. I-1024-bit iyashesha kodwa ayiphephile kangako. I-4096-bit iphephe kakhulu kodwa ihamba kancane kakhulu ukuyikhiqiza nokuyisebenzisa.
Kungani ukukhiqizwa kokhiye kuhamba kancane?
Ukukhiqiza izinombolo eziyinhloko ezinkulu ze-RSA kudinga amandla amakhulu ekhompyutha. Njengoba lokhu kusebenza ku-JavaScript esipheqululini sakho, kungathatha imizuzwana embalwa (noma ngaphezulu kwe-4096-bit).
Ubani okufanele asebenzise i-RSA Online?
Onjiniyela
Khiqiza ngokushesha okhiye bezindawo zokuhlola noma ukususa amaphutha ekusetshenzisweni kwe-crypto ngaphandle kokusetha amathuluzi endawo.
Abafundi
Funda nge-public key cryptography ngokuhlanganyela. Qonda ukuthi okhiye, ukubethela kanye nokususa ukubethela kusebenza kanjani.
Abameli Bobumfihlo
Bhala imiyalezo emifushane ehloselwe iziteshi zomphakathi lapho ufuna umamukeli othize kuphela ukuthi ayifunde.
Abalawuli Besistimu
Khiqiza okhiye besikhashana bokufinyelela kwe-SSH kwesikhathi esisodwa noma amafayela wokumisa (hlala usebenzisa ama-bits angu-2048+).
Xhumana Nathi
Unemibuzo, uthole iphutha noma udinga ukusekelwa? Finyelela kithi.
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