{"id":476220,"date":"2023-08-09T07:26:52","date_gmt":"2023-08-09T07:26:52","guid":{"rendered":""},"modified":"2023-09-05T11:12:17","modified_gmt":"2023-09-05T11:12:17","slug":"chosen-plaintext-attack","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/chosen-plaintext-attack\/","title":{"rendered":"T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn"},"content":{"rendered":"<p>T\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch m\u1eadt m\u00e3 m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1 v\u1ee1 c\u00e1c h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3 b\u1eb1ng c\u00e1ch khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn. Trong ki\u1ec3u t\u1ea5n c\u00f4ng n\u00e0y, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 ch\u1ecdn c\u00e1c b\u1ea3n r\u00f5 c\u1ee5 th\u1ec3 v\u00e0 l\u1ea5y \u0111\u01b0\u1ee3c b\u1ea3n m\u00e3 t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang th\u00f4ng qua qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch c\u00e1c c\u1eb7p b\u1ea3n r\u00f5 v\u00e0 b\u1ea3n m\u00e3, k\u1ebb t\u1ea5n c\u00f4ng nh\u1eb1m m\u1ee5c \u0111\u00edch suy ra kh\u00f3a m\u00e3 h\u00f3a, do \u0111\u00f3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3.<\/p>\n<h2>L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a Cu\u1ed9c t\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>Kh\u00e1i ni\u1ec7m T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a m\u1eadt m\u00e3 hi\u1ec7n \u0111\u1ea1i. M\u1eb7c d\u00f9 l\u1ecbch s\u1eed c\u1ee7a k\u1ef9 thu\u1eadt t\u1ea5n c\u00f4ng n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c ghi ch\u00e9p ch\u00ednh x\u00e1c nh\u01b0ng ng\u01b0\u1eddi ta tin r\u1eb1ng c\u00e1c nh\u00e0 gi\u1ea3i m\u00e3 \u0111\u00e3 nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c l\u1ed7 h\u1ed5ng ti\u1ec1m \u1ea9n li\u00ean quan \u0111\u1ebfn c\u00e1c b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn trong nhi\u1ec1u th\u1ebf k\u1ef7. Tuy nhi\u00ean, b\u1ea3n th\u00e2n thu\u1eadt ng\u1eef \u201cT\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00e0o gi\u1eefa th\u1ebf k\u1ef7 20 khi c\u00e1c nghi\u00ean c\u1ee9u v\u00e0 th\u1ea3o lu\u1eadn v\u1ec1 m\u1eadt m\u00e3 t\u0103ng v\u1ecdt trong gi\u1edbi h\u1ecdc thu\u1eadt.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn.<\/h2>\n<p>T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn bao g\u1ed3m m\u1ed9t h\u00ecnh th\u1ee9c ph\u00e2n t\u00edch m\u1eadt m\u00e3 t\u00edch c\u1ef1c, trong \u0111\u00f3 k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 ch\u1ecdn m\u1ed9t c\u00e1ch t\u1ec9 m\u1ec9 c\u00e1c b\u1ea3n r\u00f5 theo l\u1ef1a ch\u1ecdn c\u1ee7a h\u1ecd v\u00e0 quan s\u00e1t c\u00e1c b\u1ea3n m\u00e3 t\u01b0\u01a1ng \u1ee9ng sau qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p cho k\u1ebb t\u1ea5n c\u00f4ng th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 suy ra kh\u00f3a m\u00e3 h\u00f3a ho\u1eb7c hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 thu\u1eadt to\u00e1n m\u00e3 h\u00f3a c\u01a1 b\u1ea3n.<\/p>\n<p>Cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y \u0111\u1eb7c bi\u1ec7t hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 m\u00e3 h\u00f3a y\u1ebfu v\u00e0 c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf k\u00e9m. C\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng v\u00e0 b\u1ea5t \u0111\u1ed1i x\u1ee9ng hi\u1ec7n \u0111\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u00e3 ch\u1ecdn th\u00f4ng qua ph\u00e2n t\u00edch to\u00e1n h\u1ecdc nghi\u00eam ng\u1eb7t v\u00e0 ki\u1ec3m tra nghi\u00eam ng\u1eb7t.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn.<\/h2>\n<p>Cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn bao g\u1ed3m m\u1ed9t s\u1ed1 b\u01b0\u1edbc m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng ph\u1ea3i tu\u00e2n theo \u0111\u1ec3 x\u00e2m ph\u1ea1m th\u00e0nh c\u00f4ng kh\u00f3a m\u00e3 h\u00f3a:<\/p>\n<ol>\n<li>\n<p><strong>L\u1ef1a ch\u1ecdn b\u1ea3n r\u00f5:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn c\u00e1c b\u1ea3n r\u00f5 \u0111\u1ec3 m\u00e3 h\u00f3a. Nh\u1eefng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ti\u1ebft l\u1ed9 th\u00f4ng tin c\u1ee5 th\u1ec3 v\u1ec1 qu\u00e1 tr\u00ecnh ho\u1eb7c kh\u00f3a m\u00e3 h\u00f3a.<\/p>\n<\/li>\n<li>\n<p><strong>M\u00e3 h\u00f3a:<\/strong> Sau \u0111\u00f3, c\u00e1c b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn s\u1ebd ph\u1ea3i tr\u1ea3i qua qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a b\u1eb1ng thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u00edch v\u1edbi kh\u00f3a kh\u00f4ng x\u00e1c \u0111\u1ecbnh.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ea5y b\u1ea3n m\u00e3:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng ghi l\u1ea1i c\u00e1c b\u1ea3n m\u00e3 thu \u0111\u01b0\u1ee3c t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1eebng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n t\u00edch:<\/strong> B\u1eb1ng c\u00e1ch so s\u00e1nh c\u00e1c b\u1ea3n r\u00f5 \u0111\u00e3 ch\u1ecdn v\u1edbi c\u00e1c b\u1ea3n m\u00e3 t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang, k\u1ebb t\u1ea5n c\u00f4ng nh\u1eb1m m\u1ee5c \u0111\u00edch x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu ho\u1eb7c l\u1ed7 h\u1ed5ng trong qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea5u tr\u1eeb ch\u00eca kh\u00f3a:<\/strong> S\u1eed d\u1ee5ng th\u00f4ng tin thu \u0111\u01b0\u1ee3c, k\u1ebb t\u1ea5n c\u00f4ng c\u1ed1 g\u1eafng suy ra kh\u00f3a m\u00e3 h\u00f3a ho\u1eb7c khai th\u00e1c \u0111i\u1ec3m y\u1ebfu trong thu\u1eadt to\u00e1n \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn.<\/h2>\n<p>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh khi\u1ebfn ch\u00fang \u0111\u1eb7c bi\u1ec7t nguy hi\u1ec3m \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3:<\/p>\n<ol>\n<li>\n<p><strong>T\u1ea5n c\u00f4ng t\u00edch c\u1ef1c:<\/strong> Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng th\u1ee5 \u0111\u1ed9ng, trong \u0111\u00f3 k\u1ebb t\u1ea5n c\u00f4ng ch\u1ec9 quan s\u00e1t d\u1eef li\u1ec7u b\u1ecb ch\u1eb7n, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn y\u00eau c\u1ea7u s\u1ef1 t\u01b0\u01a1ng t\u00e1c t\u00edch c\u1ef1c v\u1edbi h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 m\u1ee5c ti\u00eau:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn t\u1eadp trung v\u00e0o c\u00e1c b\u1ea3n r\u00f5 c\u1ee5 th\u1ec3 \u0111\u1ec3 ti\u1ebft l\u1ed9 th\u00f4ng tin v\u1ec1 qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a, cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng suy ra kh\u00f3a m\u00e3 h\u00f3a m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00e1c \u0111\u1ed9ng c\u00f3 kh\u1ea3 n\u0103ng t\u00e0n ph\u00e1:<\/strong> N\u1ebfu th\u00e0nh c\u00f4ng, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn to\u00e0n b\u1ed9 t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3, d\u1eabn \u0111\u1ebfn truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 r\u00f2 r\u1ec9 th\u00f4ng tin.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c ki\u1ec3u t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn<\/h2>\n<p>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean m\u1ee5c ti\u00eau v\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a ch\u00fang. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn c\u1ed5 \u0111i\u1ec3n<\/td>\n<td>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho m\u1eadt m\u00e3 c\u1ed5 \u0111i\u1ec3n v\u00e0 h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3.<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn th\u00edch \u1ee9ng<\/td>\n<td>K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 s\u1eeda \u0111\u1ed5i c\u00e1c b\u1ea3n r\u00f5 \u0111\u00e3 ch\u1ecdn d\u1ef1a tr\u00ean c\u00e1c quan s\u00e1t tr\u01b0\u1edbc \u0111\u00f3.<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn h\u00e0ng lo\u1ea1t<\/td>\n<td>Nhi\u1ec1u b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 m\u00e3 h\u00f3a \u0111\u1ed3ng th\u1eddi.<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea5n c\u00f4ng ch\u1ec9 b\u1eb1ng v\u0103n b\u1ea3n m\u00e3 h\u00f3a<\/td>\n<td>M\u1ed9t ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn, nh\u01b0ng ch\u1ec9 c\u00f3 b\u1ea3n m\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng Chosen Plaintext Attack, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng.<\/h2>\n<p>Cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 c\u1ea3 \u1ee9ng d\u1ee5ng h\u1ee3p ph\u00e1p v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ed9c h\u1ea1i:<\/p>\n<ol>\n<li>\n<p><strong>Nghi\u00ean c\u1ee9u gi\u1ea3i m\u00e3:<\/strong> C\u00e1c nh\u00e0 ph\u00e2n t\u00edch v\u00e0 nh\u00e0 nghi\u00ean c\u1ee9u b\u1ea3o m\u1eadt s\u1eed d\u1ee5ng Cu\u1ed9c t\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a thu\u1eadt to\u00e1n m\u00e3 h\u00f3a v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1ed7 h\u1ed5ng ti\u1ec1m \u1ea9n. \u0110i\u1ec1u n\u00e0y gi\u00fap ph\u00e1t tri\u1ec3n c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh m\u00e3 h\u00f3a m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u00e1nh gi\u00e1 an ninh m\u1ea1ng:<\/strong> C\u00e1c t\u1ed5 ch\u1ee9c v\u00e0 chuy\u00ean gia b\u1ea3o m\u1eadt s\u1eed d\u1ee5ng Cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a th\u1eed nghi\u1ec7m th\u00e2m nh\u1eadp v\u00e0 \u0111\u00e1nh gi\u00e1 l\u1ed7 h\u1ed5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a h\u1ecd v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m y\u1ebfu.<\/p>\n<\/li>\n<li>\n<p><strong>Khai th\u00e1c \u0111\u1ed9c h\u1ea1i:<\/strong> T\u1ed9i ph\u1ea1m m\u1ea1ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 vi ph\u1ea1m c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 y\u1ebfu, \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng tr\u00e1i ph\u00e9p.<\/p>\n<\/li>\n<\/ol>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro li\u00ean quan \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn, c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p sau:<\/p>\n<ul>\n<li>S\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m duy\u1ec7t k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u00e3 ch\u1ecdn.<\/li>\n<li>Tri\u1ec3n khai c\u00e1c kh\u00f3a m\u00e3 h\u00f3a m\u1ea1nh v\u00e0 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p qu\u1ea3n l\u00fd kh\u00f3a th\u00edch h\u1ee3p.<\/li>\n<li>Th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt v\u00e0 v\u00e1 c\u00e1c th\u01b0 vi\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c l\u1ed7 h\u1ed5ng \u0111\u00e3 bi\u1ebft.<\/li>\n<li>S\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ng\u1edd.<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>T\u1ea5n c\u00f4ng b\u1ea3n r\u00f5 \u0111\u01b0\u1ee3c ch\u1ecdn<\/th>\n<th>T\u1ea5n c\u00f4ng b\u1eb1ng b\u1ea3n m\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn<\/th>\n<th>Cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng ph\u00edm \u0111\u01b0\u1ee3c ch\u1ecdn<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Lo\u1ea1i d\u1eef li\u1ec7u m\u1ee5c ti\u00eau<\/td>\n<td>B\u1ea3n r\u00f5<\/td>\n<td>b\u1ea3n m\u00e3<\/td>\n<td>Kh\u00f3a m\u00e3 h\u00f3a\/gi\u1ea3i m\u00e3<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00e1ch quan<\/td>\n<td>Suy ra kh\u00f3a m\u00e3 h\u00f3a<\/td>\n<td>Suy ra kh\u00f3a gi\u1ea3i m\u00e3<\/td>\n<td>Ch\u00eca kh\u00f3a th\u1ecfa hi\u1ec7p<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3u t\u1ea5n c\u00f4ng<\/td>\n<td>Ph\u00e2n t\u00edch m\u1eadt m\u00e3 t\u00edch c\u1ef1c<\/td>\n<td>Ph\u00e2n t\u00edch m\u1eadt m\u00e3 t\u00edch c\u1ef1c<\/td>\n<td>Ph\u00e2n t\u00edch m\u1eadt m\u00e3 t\u00edch c\u1ef1c<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed7 h\u1ed5ng b\u1ecb khai th\u00e1c<\/td>\n<td>Thu\u1eadt to\u00e1n m\u00e3 h\u00f3a y\u1ebfu<\/td>\n<td>Thu\u1eadt to\u00e1n gi\u1ea3i m\u00e3 y\u1ebfu<\/td>\n<td>Qu\u1ea3n l\u00fd kh\u00f3a k\u00e9m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn T\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn.<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, l\u0129nh v\u1ef1c m\u1eadt m\u00e3 li\u00ean t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c k\u1ef9 thu\u1eadt t\u1ea5n c\u00f4ng m\u1edbi v\u00e0 tinh vi. C\u00e1c quan \u0111i\u1ec3m trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Kh\u00e1ng 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, c\u00e1c h\u1ec7 th\u1ed1ng m\u1eadt m\u00e3 \u0111ang h\u01b0\u1edbng t\u1edbi c\u00e1c thu\u1eadt to\u00e1n kh\u00e1ng l\u01b0\u1ee3ng t\u1eed \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u1ec1m \u1ea9n, bao g\u1ed3m c\u1ea3 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1eadt m\u00e3 h\u1eadu l\u01b0\u1ee3ng t\u1eed:<\/strong> C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang t\u00edch c\u1ef1c kh\u00e1m ph\u00e1 c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a h\u1eadu l\u01b0\u1ee3ng t\u1eed c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb c\u1ea3 m\u00e1y t\u00ednh c\u1ed5 \u0111i\u1ec3n v\u00e0 l\u01b0\u1ee3ng t\u1eed.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n t\u00edch m\u1eadt m\u00e3 d\u1ef1a tr\u00ean AI:<\/strong> C\u00e1c k\u1ef9 thu\u1eadt Tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 H\u1ecdc m\u00e1y (ML) \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng ph\u00e2n t\u00edch m\u1eadt m\u00e3 v\u00e0 t\u0103ng c\u01b0\u1eddng c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u00e3 bi\u1ebft.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi Cu\u1ed9c t\u1ea5n c\u00f4ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn.<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong b\u1ea3o m\u1eadt m\u1ea1ng b\u1eb1ng c\u00e1ch \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7. M\u1eb7c d\u00f9 b\u1ea3n th\u00e2n c\u00e1c m\u00e1y ch\u1ee7 proxy kh\u00f4ng li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn, nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 b\u1ecb k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ec3 che gi\u1ea5u danh t\u00ednh v\u00e0 \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i, khi\u1ebfn nh\u1eefng ng\u01b0\u1eddi b\u1ea3o v\u1ec7 g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c truy t\u00ecm ngu\u1ed3n g\u1ed1c c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro li\u00ean quan \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng kh\u00e1c, c\u00e1c t\u1ed5 ch\u1ee9c n\u00ean tri\u1ec3n khai c\u00e1c gi\u1ea3i ph\u00e1p m\u00e1y ch\u1ee7 proxy an to\u00e0n v\u1edbi c\u01a1 ch\u1ebf gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t truy c\u1eadp th\u00edch h\u1ee3p. Ki\u1ec3m tra v\u00e0 c\u1eadp nh\u1eadt b\u1ea3o m\u1eadt th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng ph\u00f2ng th\u1ee7 m\u1ea1nh m\u1ebd tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u1ec1m \u1ea9n.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 m\u1eadt m\u00e3, h\u00e3y xem x\u00e9t kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/csrc.nist.gov\/projects\/cryptographic-toolkit\" target=\"_new\" rel=\"noopener nofollow\">B\u1ed9 c\u00f4ng c\u1ee5 m\u1eadt m\u00e3 NIST<\/a><\/li>\n<li><a href=\"https:\/\/www.schneier.com\/\" target=\"_new\" rel=\"noopener nofollow\">Schneier tr\u00ean Blog b\u1ea3o m\u1eadt<\/a><\/li>\n<li><a href=\"https:\/\/crypto.stackexchange.com\/\" target=\"_new\" rel=\"noopener nofollow\">Trao \u0111\u1ed5i ng\u0103n x\u1ebfp ti\u1ec1n \u0111i\u1ec7n t\u1eed<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476221,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476220","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Chosen Plaintext Attack: Unraveling the Cryptanalytic Technique<\/mark>","faq_items":[{"question":"What is Chosen Plaintext Attack?","answer":"<p>Chosen Plaintext Attack is a powerful cryptanalytic technique used to break cryptographic systems by exploiting vulnerabilities related to the use of chosen plaintexts. In this attack, the attacker can select specific plaintexts and obtain their corresponding ciphertexts through the encryption process, ultimately aiming to deduce the encryption key and compromise the system's security.<\/p>"},{"question":"How did Chosen Plaintext Attack originate?","answer":"<p>The concept of Chosen Plaintext Attack dates back to the early days of modern cryptography. While the history is not precisely documented, cryptanalysts have been aware of the potential vulnerability associated with chosen plaintexts for centuries. The term gained recognition in the mid-20th century during cryptographic research discussions.<\/p>"},{"question":"How does Chosen Plaintext Attack work?","answer":"<p>Chosen Plaintext Attack involves several steps. The attacker selects specific plaintexts, encrypts them using the target algorithm, and records the resulting ciphertexts. By analyzing these pairs, the attacker attempts to deduce the encryption key or exploit weaknesses in the algorithm.<\/p>"},{"question":"What types of Chosen Plaintext Attack exist?","answer":"<p>Chosen Plaintext Attacks can be categorized based on their targets and methods. Common types include Classical Chosen Plaintext Attack, Adaptive Chosen Plaintext Attack, Batch Chosen Plaintext Attack, and Ciphertext-Only Attack.<\/p>"},{"question":"What are the key features of Chosen Plaintext Attack?","answer":"<p>Chosen Plaintext Attacks are active, targeted, and can have a potentially devastating impact on weak cryptographic systems. They require the attacker to interact with the system actively.<\/p>"},{"question":"How can Chosen Plaintext Attacks be used?","answer":"<p>Chosen Plaintext Attacks have both legitimate and malicious applications. Security analysts use them for research and evaluation, while cybercriminals exploit them to breach weakly protected systems and steal sensitive data.<\/p>"},{"question":"What are the ways to defend against Chosen Plaintext Attacks?","answer":"<p>To mitigate Chosen Plaintext Attack risks, use robust encryption algorithms, strong encryption keys, and proper key management practices. Regularly update cryptographic libraries and implement intrusion detection systems.<\/p>"},{"question":"How is the future of Chosen Plaintext Attack evolving?","answer":"<p>As technology advances, cryptography is moving towards quantum-resistant algorithms and exploring AI-driven cryptanalysis techniques to strengthen defenses against Chosen Plaintext Attacks.<\/p>"},{"question":"How are proxy servers associated with Chosen Plaintext Attack?","answer":"<p>While proxy servers themselves are not directly related to Chosen Plaintext Attacks, attackers can use them to hide their identity and route malicious traffic, making it challenging to trace back the origin of the attack. Secure proxy server solutions are essential to mitigate these risks.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476220","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\/476220\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476221"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476220"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}