Advanced Encryption Standard (AES) nyob rau hauv cryptography, tseem hu ua Rijndael encryption, yog ib tug specification encryption qauv saws los ntawm tsoom fwv teb chaws tsoom fwv.
AES yog qhov sib txawv ntawm Rijndael block cipher tsim los ntawm ob tus neeg sau ntawv hauv Belgian, Joan Daemen thiab Vincent Rijmen, uas tau xa daim ntawv thov rau NIST thaum lub sijhawm xaiv AES. Rijndael yog ib txheej ciphers nrog cov yuam sij sib txawv thiab qhov ntau thiab tsawg. Rau AES, NIST xaiv peb tus tswv cuab ntawm tsev neeg Rijndael, txhua tus muaj qhov loj ntawm 128 khoom tab sis nrog peb qhov ntev sib txawv: 128, 192, thiab 256 khoom.
Cov qauv no yog siv los hloov tus thawj DES (Data Encryption Standard) thiab tau siv dav thoob plaws ntiaj teb. Tom qab kev xaiv tsib xyoos, Advanced Encryption Standard tau luam tawm los ntawm National Institute of Standards and Technology (NIST) hauv FIPS PUB 197 thaum lub Kaum Ib Hlis 26, 2001, thiab tau dhau los ua tus qauv siv tau rau lub Tsib Hlis 26, 2002. Hauv 2006, lub Advanced Encryption Standard tau dhau los ua ib qho ntawm cov algorithms nrov tshaj plaws nyob rau hauv symmetric key encryption.
AES yog siv rau hauv software thiab kho vajtse thoob plaws ntiaj teb los encrypt cov ntaub ntawv rhiab heev. Nws yog qhov tseem ceeb rau tsoomfwv lub computer kev ruaj ntseg, cybersecurity thiab kev tiv thaiv cov ntaub ntawv hluav taws xob.
Nta ntawm AES (Advanced Encryption Standard):
1.SP Network: Nws ua haujlwm ntawm SP network qauv, tsis yog Feistel cipher qauv pom nyob rau hauv rooj plaub ntawm DES algorithm.
2. Cov ntaub ntawv Byte: AES encryption algorithm ua haujlwm ntawm cov ntaub ntawv byte es tsis txhob cov ntaub ntawv me ntsis. Yog li nws kho qhov 128-ntsis block loj li 16 bytes thaum encryption.
3. Tus yuam sij Length: Tus naj npawb ntawm cov rounds los ua haujlwm nyob ntawm qhov ntev ntawm tus yuam sij siv los encrypt cov ntaub ntawv. Muaj 10 rounds rau 128-ntsis qhov tseem ceeb, 12 rounds rau 192-ntsis qhov tseem ceeb, thiab 14 rounds rau 256-ntsis qhov tseem ceeb loj.
4. Kev nthuav dav tseem ceeb: Nws yuav siv ib tus yuam sij thaum thawj theem, uas tom qab ntawd nthuav dav rau ntau tus yuam sij siv hauv ib tus neeg sib tw.
Tam sim no, feem ntau ntawm Feasycom's Bluetooth modules txhawb AES-128 encryption cov ntaub ntawv xa mus, uas zoo heev txhim kho kev ruaj ntseg ntawm cov ntaub ntawv xa mus. Yog xav paub ntxiv, thov hu rau pab pawg Feasycom.
