{"id":475825,"date":"2023-08-09T07:23:51","date_gmt":"2023-08-09T07:23:51","guid":{"rendered":""},"modified":"2023-09-05T11:11:21","modified_gmt":"2023-09-05T11:11:21","slug":"aes-encryption","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/aes-encryption\/","title":{"rendered":"M\u00e3 h\u00f3a AES"},"content":{"rendered":"<p>M\u00e3 h\u00f3a AES, vi\u1ebft t\u1eaft c\u1ee7a Ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a n\u00e2ng cao, l\u00e0 thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o m\u1eadt vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u v\u00e0 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m kh\u1ecfi b\u1ecb truy c\u1eadp tr\u00e1i ph\u00e9p. \u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi m\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 m\u1eadt m\u00e3 do Joan Daemen v\u00e0 Vincent Rijmen \u0111\u1ee9ng \u0111\u1ea7u, AES \u0111\u00e3 tr\u1edf th\u00e0nh phi\u00ean b\u1ea3n k\u1ebf th\u1eeba c\u1ee7a Ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a d\u1eef li\u1ec7u (DES) \u0111\u00e3 l\u1ed7i th\u1eddi v\u00e0o n\u0103m 2001. T\u00ednh m\u1ea1nh m\u1ebd, hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a n\u00f3 \u0111\u00e3 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n th\u1ef1c t\u1ebf cho vi\u1ec7c m\u00e3 h\u00f3a trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 truy\u1ec1n th\u00f4ng tr\u1ef1c tuy\u1ebfn v\u00e0 b\u1ea3o m\u1eadt th\u00f4ng tin.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a m\u00e3 h\u00f3a AES<\/h2>\n<p>Nhu c\u1ea7u v\u1ec1 m\u1ed9t ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a m\u1ea1nh tr\u1edf n\u00ean r\u00f5 r\u00e0ng v\u00e0o nh\u1eefng n\u0103m 1990 khi nh\u1eefng ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 khi\u1ebfn c\u00e1c ph\u01b0\u01a1ng th\u1ee9c m\u00e3 h\u00f3a c\u0169 h\u01a1n, nh\u01b0 DES, d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng. Vi\u1ec7n Ti\u00eau chu\u1ea9n v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ed1c gia Hoa K\u1ef3 (NIST) \u0111\u00e3 kh\u1edfi x\u01b0\u1edbng m\u1ed9t cu\u1ed9c thi v\u00e0o n\u0103m 1997, m\u1eddi c\u00e1c nh\u00e0 m\u1eadt m\u00e3 h\u1ecdc tr\u00ean to\u00e0n th\u1ebf gi\u1edbi g\u1eedi c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ec3 \u0111\u00e1nh gi\u00e1. Trong s\u1ed1 m\u01b0\u1eddi l\u0103m \u1ee9ng c\u1eed vi\u00ean ban \u0111\u1ea7u, Rijndael, do Daemen v\u00e0 Rijmen \u0111\u1ec7 tr\u00ecnh, \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a m\u1edbi do \u0111\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a n\u00f3.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 m\u00e3 h\u00f3a AES<\/h2>\n<p>AES l\u00e0 thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng, ngh\u0129a l\u00e0 c\u00f9ng m\u1ed9t kh\u00f3a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u1ea3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3. N\u00f3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c kh\u1ed1i d\u1eef li\u1ec7u c\u00f3 k\u00edch th\u01b0\u1edbc c\u1ed1 \u0111\u1ecbnh, th\u01b0\u1eddng l\u00e0 128, 192 ho\u1eb7c 256 bit v\u00e0 s\u1eed d\u1ee5ng m\u1ed9t lo\u1ea1t c\u00e1c ph\u00e9p bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1c v\u00f2ng \u0111\u1ec3 che khu\u1ea5t d\u1eef li\u1ec7u.<\/p>\n<p>Thu\u1eadt to\u00e1n h\u1ed7 tr\u1ee3 c\u00e1c k\u00edch th\u01b0\u1edbc kh\u00f3a 128, 192 ho\u1eb7c 256 bit, v\u1edbi s\u1ed1 v\u00f2ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi k\u00edch th\u01b0\u1edbc kh\u00f3a: 10 v\u00f2ng cho kh\u00f3a 128 bit, 12 v\u00f2ng cho kh\u00f3a 192 bit v\u00e0 14 v\u00f2ng cho kh\u00f3a 256 bit. M\u1ed7i v\u00f2ng bao g\u1ed3m b\u1ed1n ph\u00e9p bi\u1ebfn \u0111\u1ed5i ri\u00eang bi\u1ec7t: SubBytes, ShiftRows, MixColumns v\u00e0 AddRoundKey. Nh\u1eefng ph\u00e9p bi\u1ebfn \u0111\u1ed5i n\u00e0y bao g\u1ed3m c\u00e1c ph\u00e9p to\u00e1n thay th\u1ebf, ho\u00e1n v\u1ecb v\u00e0 thao t\u00e1c theo bit \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i kh\u1ed1i d\u1eef li\u1ec7u s\u1ebd b\u1ecb v\u01b0\u1edbng v\u00e0o kh\u00f3a m\u00e3 h\u00f3a.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a m\u00e3 h\u00f3a AES<\/h2>\n<p>Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e3 h\u00f3a AES c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>\n<p><strong>M\u1edf r\u1ed9ng kh\u00f3a<\/strong>: T\u1ea1o l\u1ecbch tr\u00ecnh kh\u00f3a t\u1eeb kh\u00f3a m\u00e3 h\u00f3a ban \u0111\u1ea7u.<\/p>\n<\/li>\n<li>\n<p><strong>V\u00f2ng \u0111\u1ea7u ti\u00ean<\/strong>: V\u00f2ng \u0111\u1ea7u ti\u00ean bao g\u1ed3m thao t\u00e1c XOR \u0111\u01a1n gi\u1ea3n gi\u1eefa kh\u1ed1i v\u0103n b\u1ea3n g\u1ed1c v\u00e0 kh\u00f3a v\u00f2ng \u0111\u1ea7u ti\u00ean.<\/p>\n<\/li>\n<li>\n<p><strong>V\u00f2ng ch\u00ednh<\/strong>: M\u1ed9t t\u1eadp h\u1ee3p c\u00e1c v\u00f2ng (10, 12 ho\u1eb7c 14) \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, m\u1ed7i v\u00f2ng bao g\u1ed3m c\u00e1c ph\u00e9p bi\u1ebfn \u0111\u1ed5i SubBytes, ShiftRows, MixColumns v\u00e0 AddRoundKey.<\/p>\n<\/li>\n<li>\n<p><strong>V\u00f2ng cu\u1ed1i<\/strong>: V\u00f2ng cu\u1ed1i c\u00f9ng lo\u1ea1i tr\u1eeb ph\u00e9p chuy\u1ec3n \u0111\u1ed5i MixColumns \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3.<\/p>\n<\/li>\n<li>\n<p><strong>\u0111\u1ea7u ra<\/strong>: D\u1eef li\u1ec7u m\u00e3 h\u00f3a cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c t\u1ea1o sau khi ho\u00e0n th\u00e0nh t\u1ea5t c\u1ea3 c\u00e1c v\u00f2ng.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a m\u00e3 h\u00f3a AES<\/h2>\n<ol>\n<li>\n<p><strong>B\u1ea3o v\u1ec7<\/strong>: AES \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi coi l\u00e0 c\u00f3 \u0111\u1ed9 an to\u00e0n cao, cho \u0111\u1ebfn nay kh\u00f4ng c\u00f3 l\u1ed7 h\u1ed5ng ho\u1eb7c \u0111i\u1ec3m y\u1ebfu th\u1ef1c t\u1ebf n\u00e0o \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n.<\/p>\n<\/li>\n<li>\n<p><strong>Hi\u1ec7u su\u1ea5t<\/strong>: B\u1ea5t ch\u1ea5p s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a n\u00f3, AES c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 trong ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c nhau.<\/p>\n<\/li>\n<li>\n<p><strong>Uy\u1ec3n chuy\u1ec3n<\/strong>: AES h\u1ed7 tr\u1ee3 nhi\u1ec1u k\u00edch th\u01b0\u1edbc kh\u00f3a, cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng t\u00f9y ch\u1ecdn \u0111\u1ec3 c\u00e2n b\u1eb1ng gi\u1eefa b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t.<\/p>\n<\/li>\n<li>\n<p><strong>Ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng<\/strong>: AES \u0111\u00e3 ch\u1ee9ng t\u1ecf kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1eadt m\u00e3 kh\u00e1c nhau, bao g\u1ed3m c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng vi sai v\u00e0 tuy\u1ebfn t\u00ednh.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i m\u00e3 h\u00f3a AES<\/h2>\n<table>\n<thead>\n<tr>\n<th>K\u00edch th\u01b0\u1edbc kh\u00f3a (bit)<\/th>\n<th>S\u1ed1 v\u00f2ng<\/th>\n<th>C\u00e1c \u1ee9ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>128<\/td>\n<td>10<\/td>\n<td>M\u00e3 h\u00f3a m\u1ee5c \u0111\u00edch chung cho h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng.<\/td>\n<\/tr>\n<tr>\n<td>192<\/td>\n<td>12<\/td>\n<td>Th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n.<\/td>\n<\/tr>\n<tr>\n<td>256<\/td>\n<td>14<\/td>\n<td>Cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao nh\u1ea5t nh\u01b0ng \u0111\u00f2i h\u1ecfi nhi\u1ec1u t\u00e0i nguy\u00ean t\u00ednh to\u00e1n h\u01a1n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng m\u00e3 h\u00f3a AES, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<h3>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng m\u00e3 h\u00f3a AES:<\/h3>\n<ul>\n<li>Truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n: M\u00e3 h\u00f3a d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m trong qu\u00e1 tr\u00ecnh li\u00ean l\u1ea1c \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c ch\u1eb7n v\u00e0 truy c\u1eadp tr\u00e1i ph\u00e9p.<\/li>\n<li>M\u00e3 h\u00f3a t\u1eadp tin: B\u1ea3o m\u1eadt c\u00e1c t\u1eadp tin v\u00e0 t\u00e0i li\u1ec7u \u0111\u1ec3 duy tr\u00ec t\u00ednh b\u1ea3o m\u1eadt.<\/li>\n<li>M\u00e3 h\u00f3a \u1ed5 \u0111\u0129a: M\u00e3 h\u00f3a to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb l\u01b0u tr\u1eef \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9 ng\u01a1i.<\/li>\n<\/ul>\n<h3>V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p:<\/h3>\n<ul>\n<li><strong>Qu\u1ea3n l\u00fd kh\u00f3a<\/strong>: Qu\u1ea3n l\u00fd kh\u00f3a th\u00edch h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec t\u00ednh b\u1ea3o m\u1eadt. S\u1eed d\u1ee5ng c\u01a1 ch\u1ebf l\u01b0u tr\u1eef v\u00e0 ph\u00e2n ph\u1ed1i kh\u00f3a an to\u00e0n.<\/li>\n<li><strong>T\u1ea5n c\u00f4ng k\u00eanh b\u00ean<\/strong>: AES d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng k\u00eanh b\u00ean d\u1ef1a tr\u00ean m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng ho\u1eb7c th\u1eddi gian. Th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p \u0111\u1ed1i ph\u00f3 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng m\u1ed1i \u0111e d\u1ecda n\u00e0y.<\/li>\n<li><strong>T\u00ednh to\u00e1n l\u01b0\u1ee3ng t\u1eed<\/strong>: V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a \u0111i\u1ec7n to\u00e1n l\u01b0\u1ee3ng t\u1eed, AES-256 c\u00f3 th\u1ec3 tr\u1edf n\u00ean nh\u1ea1y c\u1ea3m. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a h\u1eadu l\u01b0\u1ee3ng t\u1eed c\u00f3 th\u1ec3 \u0111\u01b0a ra gi\u1ea3i ph\u00e1p.<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>AES so v\u1edbi DES<\/td>\n<td>AES cung c\u1ea5p t\u00ednh b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u qu\u1ea3 cao h\u01a1n so v\u1edbi DES l\u1ed7i th\u1eddi.<\/td>\n<\/tr>\n<tr>\n<td>AES so v\u1edbi RSA<\/td>\n<td>AES l\u00e0 m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng, trong khi RSA l\u00e0 thu\u1eadt to\u00e1n m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng nhau \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c li\u00ean l\u1ea1c an to\u00e0n.<\/td>\n<\/tr>\n<tr>\n<td>AES so v\u1edbi c\u00e1 n\u00f3c<\/td>\n<td>AES th\u01b0\u1eddng v\u01b0\u1ee3t tr\u1ed9i h\u01a1n Blowfish v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt.<\/td>\n<\/tr>\n<tr>\n<td>AES-128 so v\u1edbi AES-256<\/td>\n<td>AES-256 cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n nh\u01b0ng \u0111\u00f2i h\u1ecfi nhi\u1ec1u t\u00e0i nguy\u00ean h\u01a1n so v\u1edbi AES-128.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn m\u00e3 h\u00f3a AES<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a m\u00e3 h\u00f3a AES n\u1eb1m \u1edf kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 v\u00e0 m\u1ed1i \u0111e d\u1ecda m\u1edbi n\u1ed5i. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 nh\u00e0 m\u1eadt m\u00e3 li\u00ean t\u1ee5c kh\u00e1m ph\u00e1 c\u00e1c l\u1ed7 h\u1ed5ng v\u00e0 c\u1ea3i ti\u1ebfn ti\u1ec1m n\u0103ng. M\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn m\u00e3 h\u00f3a AES bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>M\u00e3 h\u00f3a \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c<\/strong>: K\u1ebft h\u1ee3p m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u1ea3 t\u00ednh b\u1ea3o m\u1eadt v\u00e0 t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u.<\/li>\n<li><strong>M\u00e3 h\u00f3a \u0111\u1ed3ng c\u1ea5u<\/strong>: Cho ph\u00e9p t\u00ednh to\u00e1n tr\u00ean d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea3i m\u00e3, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 c\u00e1ch m\u1ea1ng h\u00f3a vi\u1ec7c x\u1eed l\u00fd d\u1eef li\u1ec7u v\u00e0 quy\u1ec1n ri\u00eang t\u01b0.<\/li>\n<li><strong>M\u00e3 h\u00f3a kh\u00e1ng l\u01b0\u1ee3ng t\u1eed<\/strong>: Ph\u00e1t tri\u1ec3n c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i tr\u01b0\u1edbc c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u00ednh to\u00e1n l\u01b0\u1ee3ng t\u1eed.<\/li>\n<\/ul>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi m\u00e3 h\u00f3a AES<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 kh\u00e1c tr\u00ean internet. Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u00e3 h\u00f3a AES theo nh\u1eefng c\u00e1ch sau:<\/p>\n<ul>\n<li><strong>Truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u b\u1eb1ng AES tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u \u0111\u00f3 \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch, b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt.<\/li>\n<li><strong>Quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 \u1ea9n danh<\/strong>: M\u00e3 h\u00f3a AES trong m\u00e1y ch\u1ee7 proxy gi\u00fap b\u1ea3o v\u1ec7 c\u00e1c ho\u1ea1t \u0111\u1ed9ng tr\u1ef1c tuy\u1ebfn v\u00e0 th\u00f4ng tin c\u00e1 nh\u00e2n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi b\u1ecb nghe l\u00e9n.<\/li>\n<\/ul>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 m\u00e3 h\u00f3a AES, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li>NIST: AES (<a href=\"https:\/\/csrc.nist.gov\/projects\/advanced-encryption-standard\" target=\"_new\" rel=\"noopener nofollow\">https:\/\/csrc.nist.gov\/projects\/advanced-encryption-standard<\/a>)<\/li>\n<li>Trang web c\u1ee7a Joan Daemen: (<a href=\"http:\/\/www.daemen.name\/\" target=\"_new\" rel=\"noopener nofollow\">http:\/\/www.daemen.name\/<\/a>)<\/li>\n<li>Trang web c\u1ee7a Vincent Rijmen: (<a href=\"https:\/\/www.esat.kuleuven.be\/cosic\/\" target=\"_new\" rel=\"noopener nofollow\">https:\/\/www.esat.kuleuven.be\/cosic\/<\/a>)<\/li>\n<\/ol>\n<p>H\u00e3y nh\u1edb r\u1eb1ng, m\u00e3 h\u00f3a AES \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong th\u1eddi \u0111\u1ea1i k\u1ef9 thu\u1eadt s\u1ed1. Hi\u1ec3u ho\u1ea1t \u0111\u1ed9ng b\u00ean trong c\u1ee7a n\u00f3 v\u00e0 s\u1eed d\u1ee5ng n\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o li\u00ean l\u1ea1c an to\u00e0n v\u00e0 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m.<\/p>","protected":false},"featured_media":475557,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475825","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>AES Encryption: Ensuring Secure Data Transmission with Advanced Encryption Standard<\/mark>","faq_items":[{"question":"What is AES encryption, and why is it important?","answer":"<p>AES encryption, short for Advanced Encryption Standard, is a powerful symmetric encryption algorithm used to secure data transmission and protect sensitive information from unauthorized access. It is essential for ensuring data privacy and maintaining confidentiality in various applications, such as online communication and information security.<\/p>"},{"question":"How did AES encryption come into existence?","answer":"<p>AES encryption originated from a competition held by the U.S. National Institute of Standards and Technology (NIST) in 1997. Cryptographers worldwide participated, and out of fifteen initial candidates, the Rijndael algorithm, submitted by Joan Daemen and Vincent Rijmen, was chosen as the new encryption standard due to its superior security and performance attributes.<\/p>"},{"question":"How does AES encryption work?","answer":"<p>AES encryption works on fixed-size blocks of data, typically 128, 192, or 256 bits, using a series of mathematical transformations called rounds. These rounds include SubBytes, ShiftRows, MixColumns, and AddRoundKey, which obscure the data with the encryption key, making it secure from unauthorized access.<\/p>"},{"question":"What are the main features of AES encryption?","answer":"<p>AES encryption offers several key features, including high security with no practical vulnerabilities, efficient performance in hardware and software implementations, flexibility in supporting different key sizes, and resistance to cryptographic attacks.<\/p>"},{"question":"What are the types of AES encryption available?","answer":"<p>AES encryption comes in three types based on key sizes: AES-128, AES-192, and AES-256. AES-128 uses a 128-bit key, AES-192 uses a 192-bit key, and AES-256 uses a 256-bit key. The higher the key size, the stronger the encryption, but it requires more computational resources.<\/p>"},{"question":"In what ways can AES encryption be used?","answer":"<p>AES encryption has multiple applications, such as securing data transmission to prevent interception, encrypting files and documents to maintain confidentiality, and encrypting entire storage devices to protect data at rest.<\/p>"},{"question":"What are some potential problems with AES encryption and their solutions?","answer":"<p>Common issues with AES encryption include key management, side-channel attacks based on power consumption or timing, and the potential threat of quantum computing. Solutions involve secure key storage and distribution, implementing countermeasures against side-channel attacks, and exploring post-quantum encryption methods.<\/p>"},{"question":"How does AES encryption compare to other encryption methods?","answer":"<p>AES surpasses its predecessor DES in security and efficiency. It differs from RSA, which is an asymmetric encryption algorithm, and outperforms Blowfish in terms of speed and security. AES-256 provides higher security than AES-128 but requires more resources.<\/p>"},{"question":"What future technologies are related to AES encryption?","answer":"<p>The future of AES encryption lies in technologies like authenticated encryption, homomorphic encryption, and quantum-resistant encryption. These advancements aim to enhance data security and privacy in the face of evolving threats.<\/p>"},{"question":"How are proxy servers associated with AES encryption?","answer":"<p>Proxy servers can enhance security by encrypting data using AES before relaying it to the destination server. This added layer of encryption helps protect users' online activities and personal information from potential eavesdropping.<\/p><p>For more information, check out the related links provided in the article!<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475825\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/475557"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=475825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}