{"id":476821,"date":"2023-08-09T07:36:15","date_gmt":"2023-08-09T07:36:15","guid":{"rendered":""},"modified":"2023-09-05T11:13:29","modified_gmt":"2023-09-05T11:13:29","slug":"digital-envelope","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/digital-envelope\/","title":{"rendered":"phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Trong l\u0129nh v\u1ef1c b\u1ea3o m\u1eadt v\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u, phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o t\u00ednh b\u1ea3o m\u1eadt v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a th\u00f4ng tin nh\u1ea1y c\u1ea3m trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o l\u1ecbch s\u1eed, ho\u1ea1t \u0111\u1ed9ng, c\u00e1c t\u00ednh n\u0103ng ch\u00ednh, lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1. Ngo\u00e0i ra, ch\u00fang t\u00f4i s\u1ebd kh\u00e1m ph\u00e1 m\u1ed1i quan h\u1ec7 c\u1ee7a n\u00f3 v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 proxy v\u00e0 quan \u0111i\u1ec3m c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c v\u00e0 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean<\/h2>\n<p>Kh\u00e1i ni\u1ec7m phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt th\u00f4ng tin li\u00ean l\u1ea1c qua c\u00e1c m\u1ea1ng kh\u00f4ng an to\u00e0n, ch\u1eb3ng h\u1ea1n nh\u01b0 internet. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng n\u0103m 1970 v\u00e0 1980 khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u b\u1eaft \u0111\u1ea7u kh\u00e1m ph\u00e1 c\u00e1c k\u1ef9 thu\u1eadt m\u00e3 h\u00f3a \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi b\u1ecb nghe l\u00e9n v\u00e0 truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1<\/h2>\n<p>Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt m\u00e3 h\u00f3a lai k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng v\u00e0 b\u1ea5t \u0111\u1ed1i x\u1ee9ng \u0111\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n. N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 trao \u0111\u1ed5i kh\u00f3a v\u00e0 t\u1ed1c \u0111\u1ed9 trong m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng truy\u1ec1n th\u1ed1ng \u0111\u1ed3ng th\u1eddi h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c qu\u1ea3n l\u00fd kh\u00f3a an to\u00e0n.<\/p>\n<p>Qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 th\u01b0\u1eddng bao g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li><strong>T\u1ea1o kh\u00f3a<\/strong>: Ng\u01b0\u1eddi g\u1eedi t\u1ea1o kh\u00f3a m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng ng\u1eabu nhi\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u00f3a phi\u00ean.<\/li>\n<li><strong>M\u00e3 h\u00f3a d\u1eef li\u1ec7u<\/strong>: Ng\u01b0\u1eddi g\u1eedi m\u00e3 h\u00f3a d\u1eef li\u1ec7u th\u1ef1c t\u1ebf b\u1eb1ng kh\u00f3a phi\u00ean v\u00e0 thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng nhanh nh\u01b0 AES (Ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a n\u00e2ng cao).<\/li>\n<li><strong>M\u00e3 h\u00f3a kh\u00f3a phi\u00ean<\/strong>: Kh\u00f3a phi\u00ean sau \u0111\u00f3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng kh\u00f3a chung c\u1ee7a ng\u01b0\u1eddi nh\u1eadn, kh\u00f3a n\u00e0y \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb ch\u1ee9ng ch\u1ec9 k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a h\u1ecd.<\/li>\n<li><strong>H\u00ecnh th\u00e0nh phong b\u00ec<\/strong>: D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 kh\u00f3a phi\u00ean \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a t\u1ea1o th\u00e0nh phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1.<\/li>\n<li><strong>Qu\u00e1 tr\u00ecnh l\u00e2y truy\u1ec1n<\/strong>: Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1, c\u00f9ng v\u1edbi m\u1ecdi th\u00f4ng tin b\u1ed5 sung c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3i m\u00e3, s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn ng\u01b0\u1eddi nh\u1eadn.<\/li>\n<\/ol>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u00ecnh dung nh\u01b0 sau:<\/p>\n<table>\n<thead>\n<tr>\n<th>C\u00e1nh \u0111\u1ed3ng<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a<\/td>\n<td>D\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng kh\u00f3a phi\u00ean<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f3a m\u00e3 h\u00f3a<\/td>\n<td>Kh\u00f3a phi\u00ean \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng kh\u00f3a chung c\u1ee7a ng\u01b0\u1eddi nh\u1eadn<\/td>\n<\/tr>\n<tr>\n<td>Th\u00f4ng tin b\u1ed5 sung<\/td>\n<td>Si\u00eau d\u1eef li\u1ec7u ho\u1eb7c th\u00f4ng tin c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3i m\u00e3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Khi ng\u01b0\u1eddi nh\u1eadn nh\u1eadn \u0111\u01b0\u1ee3c phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1, h\u1ecd th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau \u0111\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u g\u1ed1c:<\/p>\n<ol>\n<li><strong>Gi\u1ea3i m\u00e3 kh\u00f3a phi\u00ean<\/strong>: Ng\u01b0\u1eddi nh\u1eadn s\u1eed d\u1ee5ng kh\u00f3a ri\u00eang c\u1ee7a h\u1ecd \u0111\u1ec3 gi\u1ea3i m\u00e3 kh\u00f3a phi\u00ean.<\/li>\n<li><strong>Gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u<\/strong>: S\u1eed d\u1ee5ng kh\u00f3a phi\u00ean \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i m\u00e3, ng\u01b0\u1eddi nh\u1eadn s\u1ebd gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, l\u1ea5y l\u1ea1i th\u00f4ng tin ban \u0111\u1ea7u.<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh<\/h2>\n<p>Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh gi\u00fap ch\u00fang thu\u1eadn l\u1ee3i cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n:<\/p>\n<ol>\n<li><strong>Trao \u0111\u1ed5i kh\u00f3a an to\u00e0n<\/strong>: M\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng \u0111\u1ea3m b\u1ea3o trao \u0111\u1ed5i kh\u00f3a an to\u00e0n v\u00ec kh\u00f3a phi\u00ean \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng kh\u00f3a chung c\u1ee7a ng\u01b0\u1eddi nh\u1eadn.<\/li>\n<li><strong>M\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng hi\u1ec7u qu\u1ea3<\/strong>: D\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng nhanh, \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd t\u1ed1c \u0111\u1ed9 cao.<\/li>\n<li><strong>Uy\u1ec3n chuy\u1ec3n<\/strong>: Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/li>\n<li><strong>B\u1ea3o m\u1eadt<\/strong>: N\u1ed9i dung c\u1ee7a phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u01b0\u1ee3c gi\u1eef b\u00ed m\u1eadt, b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m kh\u1ecfi b\u1ecb truy c\u1eadp tr\u00e1i ph\u00e9p.<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1<\/h2>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 kh\u00e1c nhau, kh\u00e1c nhau d\u1ef1a tr\u00ean c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a c\u01a1 b\u1ea3n v\u00e0 giao th\u1ee9c m\u00e3 h\u00f3a c\u1ee7a ch\u00fang. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 d\u1ef1a tr\u00ean RSA<\/strong>: S\u1eed d\u1ee5ng RSA \u0111\u1ec3 trao \u0111\u1ed5i kh\u00f3a v\u00e0 m\u00e3 h\u00f3a kh\u00f3a phi\u00ean.<\/li>\n<li><strong>Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 d\u1ef1a tr\u00ean ElGamal<\/strong>: D\u1ef1a v\u00e0o s\u01a1 \u0111\u1ed3 m\u00e3 h\u00f3a ElGamal \u0111\u1ec3 trao \u0111\u1ed5i kh\u00f3a v\u00e0 m\u00e3 h\u00f3a kh\u00f3a phi\u00ean.<\/li>\n<li><strong>Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 lai<\/strong>: K\u1ebft h\u1ee3p nhi\u1ec1u thu\u1eadt to\u00e1n m\u00e3 h\u00f3a \u0111\u1ec3 n\u00e2ng cao t\u00ednh b\u1ea3o m\u1eadt.<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<h3>C\u00e1ch s\u1eed d\u1ee5ng phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1:<\/h3>\n<ol>\n<li><strong>B\u1ea3o m\u1eadt li\u00ean l\u1ea1c qua email<\/strong>: Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o m\u1eadt li\u00ean l\u1ea1c qua email, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 ng\u01b0\u1eddi nh\u1eadn d\u1ef1 \u0111\u1ecbnh m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp n\u1ed9i dung.<\/li>\n<li><strong>Truy\u1ec1n d\u1eef li\u1ec7u trong \u1ee9ng d\u1ee5ng web<\/strong>: Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n trong c\u00e1c \u1ee9ng d\u1ee5ng web, b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/li>\n<li><strong>Truy\u1ec1n t\u1ec7p an to\u00e0n<\/strong>: Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a c\u00e1c t\u1eadp tin tr\u01b0\u1edbc khi truy\u1ec1n ch\u00fang qua internet, b\u1ea3o v\u1ec7 c\u00e1c t\u00e0i li\u1ec7u nh\u1ea1y c\u1ea3m.<\/li>\n<\/ol>\n<h3>V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p:<\/h3>\n<ol>\n<li><strong>Qu\u1ea3n l\u00fd kh\u00f3a<\/strong>: Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd kh\u00f3a m\u1ea1nh m\u1ebd \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho kh\u00f3a m\u00e3 h\u00f3a.<\/li>\n<li><strong>Chi ph\u00ed hi\u1ec7u su\u1ea5t<\/strong>: Qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng c\u00f3 th\u1ec3 g\u00e2y ra chi ph\u00ed hi\u1ec7u n\u0103ng c\u1ea7n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 s\u1eed d\u1ee5ng tr\u00ean quy m\u00f4 l\u1edbn.<\/li>\n<li><strong>X\u00e1c th\u1ef1c<\/strong>: Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 v\u1ed1n kh\u00f4ng cung c\u1ea5p t\u00ednh n\u0103ng x\u00e1c th\u1ef1c. C\u1ea7n c\u00f3 c\u00e1c c\u01a1 ch\u1ebf b\u1ed5 sung nh\u01b0 ch\u1eef k\u00fd s\u1ed1 \u0111\u1ec3 x\u00e1c minh danh t\u00ednh c\u1ee7a ng\u01b0\u1eddi g\u1eedi.<\/li>\n<\/ol>\n<h2>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>Phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1<\/th>\n<th>Ch\u1eef k\u00fd s\u1ed1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u1ee5c \u0111\u00edch<\/td>\n<td>M\u00e3 h\u00f3a v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<td>X\u00e1c th\u1ef1c d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td>Lo\u1ea1i m\u00e3 h\u00f3a<\/td>\n<td>\u0110\u1ed1i x\u1ee9ng v\u00e0 b\u1ea5t \u0111\u1ed1i x\u1ee9ng<\/td>\n<td>B\u1ea5t \u0111\u1ed1i x\u1ee9ng<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ebfn th\u1ee9c c\u1ee7a ng\u01b0\u1eddi nh\u1eadn<\/td>\n<td>C\u1ea7n c\u00f3 kh\u00f3a c\u00f4ng khai c\u1ee7a ng\u01b0\u1eddi nh\u1eadn<\/td>\n<td>C\u1ea7n c\u00f3 kh\u00f3a c\u00f4ng khai c\u1ee7a ng\u01b0\u1eddi k\u00fd<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c minh d\u1eef li\u1ec7u<\/td>\n<td>Kh\u00f4ng c\u1ed1 h\u1eefu<\/td>\n<td>Bao g\u1ed3m (Cung c\u1ea5p t\u00ednh to\u00e0n v\u1eb9n)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, l\u0129nh v\u1ef1c phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 s\u1ebd c\u00f3 nh\u1eefng c\u1ea3i ti\u1ebfn h\u01a1n n\u1eefa. M\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>M\u1eadt m\u00e3 h\u1eadu l\u01b0\u1ee3ng t\u1eed<\/strong>: Ph\u00e1t tri\u1ec3n phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 d\u1ef1a tr\u00ean thu\u1eadt to\u00e1n m\u00e3 h\u00f3a c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u0111i\u1ec7n to\u00e1n l\u01b0\u1ee3ng t\u1eed.<\/li>\n<li><strong>T\u00edch h\u1ee3p chu\u1ed7i kh\u1ed1i<\/strong>: T\u1eadn d\u1ee5ng blockchain \u0111\u1ec3 trao \u0111\u1ed5i v\u00e0 qu\u1ea3n l\u00fd kh\u00f3a an to\u00e0n, t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt t\u1ed5ng th\u1ec3 c\u1ee7a phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1.<\/li>\n<\/ol>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 m\u1ed1i li\u00ean h\u1ec7 c\u1ee7a ch\u00fang v\u1edbi phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy v\u00e0 phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1c kh\u00e1i ni\u1ec7m li\u00ean quan tr\u1ef1c ti\u1ebfp nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 b\u1ed5 sung cho nhau trong c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3. M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt cho qu\u00e1 tr\u00ecnh li\u00ean l\u1ea1c.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 phong b\u00ec k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/\" target=\"_new\" rel=\"noopener\">Trang web OneProxy<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Public-key_cryptography\" target=\"_new\" rel=\"noopener nofollow\">M\u1eadt m\u00e3 kh\u00f3a c\u00f4ng khai<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/RSA_(cryptosystem)\" target=\"_new\" rel=\"noopener nofollow\">Thu\u1eadt to\u00e1n RSA<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/ElGamal_encryption\" target=\"_new\" rel=\"noopener nofollow\">M\u00e3 h\u00f3a ElGamal<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Advanced_Encryption_Standard\" target=\"_new\" rel=\"noopener nofollow\">Ti\u00eau chu\u1ea9n m\u00e3 h\u00f3a n\u00e2ng cao (AES)<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476822,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476821","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Digital Envelope: An Overview<\/mark>","faq_items":[{"question":"What is a digital envelope?","answer":"<p>A digital envelope is a hybrid cryptographic technique used to secure data during transmission. It combines symmetric and asymmetric encryption methods to ensure confidentiality and integrity.<\/p>"},{"question":"How did the concept of digital envelopes originate?","answer":"<p>The concept of digital envelopes emerged in the 1970s and 1980s as a solution to secure communication over insecure networks, like the internet.<\/p>"},{"question":"How does a digital envelope work?","answer":"<p>A digital envelope involves key generation, data encryption, session key encryption, and envelope formation. The recipient uses their private key to decrypt the session key and then decrypts the data using the session key.<\/p>"},{"question":"What are the key features of digital envelopes?","answer":"<p>Digital envelopes offer secure key exchange, efficient symmetric encryption, flexibility, and confidentiality.<\/p>"},{"question":"What types of digital envelopes exist?","answer":"<p>There are several types, including RSA-based, ElGamal-based, and hybrid digital envelopes.<\/p>"},{"question":"In what ways can digital envelopes be used?","answer":"<p>Digital envelopes are commonly used for secure email communication, data transmission in web applications, and secure file transfer.<\/p>"},{"question":"What are the problems associated with digital envelopes and their solutions?","answer":"<p>Problems include key management, performance overhead, and lack of inherent authentication. Solutions involve robust key management systems, performance optimization, and the use of additional authentication mechanisms.<\/p>"},{"question":"How do digital envelopes compare to digital signatures?","answer":"<p>Digital envelopes are used for data encryption and transmission, while digital signatures are used for data authentication.<\/p>"},{"question":"What are the future perspectives for digital envelopes?","answer":"<p>Future technologies may include post-quantum cryptography and blockchain integration for enhanced security.<\/p>"},{"question":"How are proxy servers associated with digital envelopes?","answer":"<p>While not directly related, proxy servers can enhance security by forwarding data encrypted with digital envelopes, adding an extra layer of protection to communication.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476821","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\/476821\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476822"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}