I-Advanced Encryption Standard (AES) ekubetheleni, eyaziwa nangokuthi ukubethela kwe-Rijndael, iyindinganiso yokubethela ecacisiwe eyamukelwa uhulumeni wobumbano wase-US.
I-AES iwuhlobo oluhlukile lwe-Rijndael block cipher eyakhiwe ngababhala bezincwadi baseBelgium ababili, u-Joan Daemen no-Vincent Rijmen, abathumele isiphakamiso ku-NIST phakathi nenqubo yokukhetha ye-AES. I-Rijndael isethi yama-cipher anokhiye abahlukene namasayizi webhulokhi. Ku-AES, i-NIST ikhethe amalungu amathathu omndeni wakwa-Rijndael, ngalinye linosayizi webhulokhi wamabhithi angu-128 kodwa anobude obuhlukene obuthathu: 128, 192, kanye namabhithi angu-256.
Leli zinga lisetshenziselwa ukufaka esikhundleni se-DES yasekuqaleni (Izinga Lokubethelwa Kwedatha) futhi selisetshenziswe kabanzi emhlabeni wonke. Ngemva kwenqubo yokukhetha yeminyaka emihlanu, i-Advanced Encryption Standard yanyatheliswa yi-National Institute of Standards and Technology (NIST) ku-FIPS PUB 197 ngoNovemba 26, 2001, futhi yaba indinganiso evumelekile ngoMeyi 26, 2002. Ngo-2006, i- I-Advanced Encryption Standard isiphenduke enye yama-algorithms adume kakhulu ekubetheleni kokhiye we-symmetric.
I-AES isetshenziswa ku-software ne-hardware emhlabeni wonke ukuze ibethelwe idatha ebucayi. Ibalulekile ekuvikelekeni kwamakhompuyutha kahulumeni, i-cybersecurity kanye nokuvikelwa kwedatha ye-elekthronikhi.
Izici ze-AES (Advanced Encryption Standard):
Inethiwekhi ye-1.SP: Isebenza kusakhiwo senethiwekhi ye-SP, hhayi isakhiwo se-Feistel cipher esibonwa endabeni ye-algorithm ye-DES.
2. Idatha ye-Byte: I-algorithm yokubethela ye-AES isebenza kudatha ye-byte esikhundleni se-bit data. Ngakho iphatha usayizi webhulokhi we-128-bit njengamabhayithi ayi-16 ngesikhathi sokubethela.
3. Ubude Bokhiye: Inombolo yemizuliswano okufanele isetshenziswe incike kubude bokhiye osetshenziswe ukubethela idatha. Kukhona imizuliswano eyi-10 yosayizi wokhiye we-128-bit, imizuliswano eyi-12 kasayizi wokhiye we-192-bit, nemizuliswano eyi-14 kasayizi wokhiye we-256-bit.
4. Ukunwetshwa Okubalulekile: Kuthatha ukhiye owodwa phezulu ngesikhathi sesigaba sokuqala, esinwetshwa kamuva sibe okhiye abaningi abasetshenziswa emizuliswaneni ngayinye.
Njengamanje, iningi lamamojula we-Bluetooth we-Feasycom asekela ukudluliswa kwedatha yokubethela kwe-AES-128, okuthuthukisa kakhulu ukuphepha kokudluliswa kwedatha. Ukuze uthole imininingwane eyengeziwe, sicela uthinte ithimba le-Feasycom.
