{"id":476813,"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":"digest-authentication","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/digest-authentication\/","title":{"rendered":"x\u00e1c th\u1ef1c th\u00f4ng b\u00e1o"},"content":{"rendered":"<p>X\u00e1c th\u1ef1c Digest l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 b\u1ea3o m\u1eadt c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 m\u00e1y ch\u1ee7 proxy. \u0110\u00e2y l\u00e0 m\u1ed9t c\u1ea3i ti\u1ebfn so v\u1edbi s\u01a1 \u0111\u1ed3 x\u00e1c th\u1ef1c c\u01a1 b\u1ea3n, gi\u1ea3i quy\u1ebft m\u1ed9t s\u1ed1 l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt c\u1ee7a n\u00f3. Qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c Digest bao g\u1ed3m vi\u1ec7c trao \u0111\u1ed5i th\u00f4ng tin \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, cung c\u1ea5p c\u00e1ch x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng an to\u00e0n h\u01a1n.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a x\u00e1c th\u1ef1c Digest v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>X\u00e1c th\u1ef1c Digest \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o n\u0103m 1998 nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a RFC 2069, nh\u01b0ng phi\u00ean b\u1ea3n cu\u1ed1i c\u00f9ng c\u1ee7a n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c ghi l\u1ea1i trong RFC 2617 v\u00e0o n\u0103m 1999. \u00dd t\u01b0\u1edfng v\u1ec1 x\u00e1c th\u1ef1c Digest ra \u0111\u1eddi nh\u1eb1m \u0111\u00e1p \u1ee9ng nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a x\u00e1c th\u1ef1c C\u01a1 b\u1ea3n, v\u1ed1n truy\u1ec1n th\u00f4ng tin x\u00e1c th\u1ef1c \u1edf d\u1ea1ng b\u1ea3n r\u00f5 qua m\u1ea1ng, l\u00e0m cho n\u00f3 d\u1ec5 b\u1ecb \u0111\u00e1nh ch\u1eb7n v\u00e0 t\u1ea5n c\u00f4ng l\u1ea1i.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 x\u00e1c th\u1ef1c Digest. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 X\u00e1c th\u1ef1c Digest.<\/h2>\n<p>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf ph\u1ea3n h\u1ed3i th\u1eed th\u00e1ch \u0111\u1ec3 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m m\u1ed9t s\u1ed1 b\u01b0\u1edbc:<\/p>\n<ol>\n<li>\n<p><strong>Y\u00eau c\u1ea7u kh\u00e1ch h\u00e0ng<\/strong>: M\u00e1y kh\u00e1ch g\u1eedi y\u00eau c\u1ea7u HTTP \u0111\u1ebfn m\u00e1y ch\u1ee7, cho bi\u1ebft \u00fd \u0111\u1ecbnh truy c\u1eadp t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/p>\n<\/li>\n<li>\n<p><strong>Th\u1eed th\u00e1ch m\u00e1y ch\u1ee7<\/strong>: M\u00e1y ch\u1ee7 ph\u1ea3n h\u1ed3i b\u1eb1ng m\u00e3 tr\u1ea1ng th\u00e1i Kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n 401 v\u00e0 t\u1ea1o nonce (m\u00e3 th\u00f4ng b\u00e1o duy nh\u1ea5t) c\u00f9ng v\u1edbi c\u00e1c tham s\u1ed1 kh\u00e1c. Nonce l\u00e0 gi\u00e1 tr\u1ecb d\u1ef1a tr\u00ean th\u1eddi gian, gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eb7p l\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u1ea3n h\u1ed3i c\u1ee7a kh\u00e1ch h\u00e0ng<\/strong>: M\u00e1y kh\u00e1ch t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb b\u0103m c\u1ee7a th\u00f4ng tin x\u00e1c th\u1ef1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, c\u00f9ng v\u1edbi s\u1ed1 nonce nh\u1eadn \u0111\u01b0\u1ee3c v\u00e0 c\u00e1c tham s\u1ed1 kh\u00e1c, b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n b\u0103m nh\u01b0 MD5. H\u00e0m b\u0103m k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c g\u1eedi tr\u1edf l\u1ea1i m\u00e1y ch\u1ee7 trong m\u1ed9t y\u00eau c\u1ea7u kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>X\u00e1c minh m\u00e1y ch\u1ee7<\/strong>: M\u00e1y ch\u1ee7 nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 l\u1eb7p l\u1ea1i ph\u00e9p t\u00ednh b\u0103m t\u01b0\u01a1ng t\u1ef1 \u1edf ph\u00eda cu\u1ed1i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef cho ng\u01b0\u1eddi d\u00f9ng. N\u1ebfu h\u00e0m b\u0103m \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n kh\u1edbp v\u1edbi gi\u00e1 tr\u1ecb nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb m\u00e1y kh\u00e1ch th\u00ec qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c th\u00e0nh c\u00f4ng v\u00e0 m\u00e1y ch\u1ee7 c\u1ea5p quy\u1ec1n truy c\u1eadp v\u00e0o t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/p>\n<\/li>\n<\/ol>\n<p>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt v\u00ec m\u1eadt kh\u1ea9u th\u1ef1c t\u1ebf kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c truy\u1ec1n qua m\u1ea1ng. Thay v\u00e0o \u0111\u00f3, ch\u1ec9 c\u00f3 h\u00e0m b\u0103m c\u1ee7a m\u1eadt kh\u1ea9u \u0111\u01b0\u1ee3c trao \u0111\u1ed5i, khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c l\u1ea5y l\u1ea1i m\u1eadt kh\u1ea9u ban \u0111\u1ea7u t\u1eeb l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a x\u00e1c th\u1ef1c Digest. C\u00e1ch x\u00e1c th\u1ef1c Digest ho\u1ea1t \u0111\u1ed9ng.<\/h2>\n<p>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau:<\/p>\n<ul>\n<li>\n<p><strong>t\u00ean t\u00e0i kho\u1ea3n<\/strong>: T\u00ean ng\u01b0\u1eddi d\u00f9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c bao g\u1ed3m trong y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n<\/li>\n<li>\n<p><strong>V\u01b0\u01a1ng qu\u1ed1c<\/strong>: V\u01b0\u01a1ng qu\u1ed1c l\u00e0 m\u1ed9t khu v\u1ef1c ho\u1eb7c mi\u1ec1n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 m\u00e0 ng\u01b0\u1eddi d\u00f9ng \u0111ang c\u1ed1 g\u1eafng gi\u00e0nh quy\u1ec1n truy c\u1eadp. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb cho ng\u01b0\u1eddi d\u00f9ng trong qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c.<\/p>\n<\/li>\n<li>\n<p><strong>Nonce<\/strong>: M\u1ed9t gi\u00e1 tr\u1ecb duy nh\u1ea5t \u0111\u01b0\u1ee3c m\u00e1y ch\u1ee7 t\u1ea1o ra v\u00e0 g\u1eedi \u0111\u1ebfn m\u00e1y kh\u00e1ch trong th\u1eed th\u00e1ch. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eb7p l\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>URI (M\u00e3 \u0111\u1ecbnh danh t\u00e0i nguy\u00ean \u0111\u1ed3ng nh\u1ea5t)<\/strong>: URI c\u1ee7a t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u, c\u00f3 trong y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u1ea3n \u1ee9ng<\/strong>: H\u00e0m b\u0103m \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n c\u1ee7a kh\u00e1ch h\u00e0ng, d\u1ef1a tr\u00ean th\u00f4ng tin x\u00e1c th\u1ef1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, s\u1ed1 nonce v\u00e0 c\u00e1c tham s\u1ed1 kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1edd m\u1ecbt<\/strong>: M\u1ed9t tham s\u1ed1 t\u00f9y ch\u1ecdn \u0111\u01b0\u1ee3c g\u1eedi b\u1edfi m\u00e1y ch\u1ee7, \u0111\u01b0\u1ee3c m\u00e1y kh\u00e1ch tr\u1ea3 v\u1ec1 kh\u00f4ng thay \u0111\u1ed5i. N\u00f3 gi\u00fap m\u00e1y ch\u1ee7 li\u00ean k\u1ebft m\u1ed9t y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a m\u00e1y kh\u00e1ch v\u1edbi ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7 t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<\/li>\n<li>\n<p><strong>Thu\u1eadt to\u00e1n<\/strong>: Thu\u1eadt to\u00e1n b\u0103m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra h\u00e0m b\u0103m. MD5 l\u00e0 thu\u1eadt to\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, m\u1eb7c d\u00f9 c\u00e1c thu\u1eadt to\u00e1n kh\u00e1c nh\u01b0 SHA-256 ho\u1eb7c SHA-512 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<li>\n<p><strong>QoP (Ch\u1ea5t l\u01b0\u1ee3ng b\u1ea3o v\u1ec7)<\/strong>: Tham s\u1ed1 t\u00f9y ch\u1ecdn cho bi\u1ebft m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho x\u00e1c th\u1ef1c. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh \u201cauth\u201d, \u201cauth-int\u201d ho\u1eb7c c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c.<\/p>\n<\/li>\n<\/ul>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a x\u00e1c th\u1ef1c Digest<\/h2>\n<p>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng quan tr\u1ecdng:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ea3o v\u1ec7<\/strong>: Vi\u1ec7c s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u b\u0103m v\u00e0 m\u1eadt kh\u1ea9u kh\u00f4ng m\u00e3 s\u1ebd ng\u0103n ch\u1eb7n k\u1ebb t\u1ea5n c\u00f4ng ch\u1eb7n v\u00e0 s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u v\u0103n b\u1ea3n g\u1ed1c.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eb7p l\u1ea1i<\/strong>: Vi\u1ec7c bao g\u1ed3m c\u00e1c nonce \u0111\u1ea3m b\u1ea3o r\u1eb1ng ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y kh\u00e1ch kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u1ea1i trong c\u00e1c y\u00eau c\u1ea7u ti\u1ebfp theo.<\/p>\n<\/li>\n<li>\n<p><strong>C\u01a1 ch\u1ebf ph\u1ea3n h\u1ed3i th\u00e1ch th\u1ee9c<\/strong>: X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o bao g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc, khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng kh\u00f3 gi\u1ea3 m\u1ea1o th\u00f4ng tin x\u00e1c th\u1ef1c h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>Thu\u1eadt to\u00e1n b\u0103m linh ho\u1ea1t<\/strong>: X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o cho ph\u00e9p s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n b\u0103m kh\u00e1c nhau, mang l\u1ea1i m\u1ee9c \u0111\u1ed9 linh ho\u1ea1t nh\u1ea5t \u0111\u1ecbnh v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi t\u01b0\u01a1ng lai.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i<\/strong>: H\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t web v\u00e0 m\u00e1y ch\u1ee7 hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u h\u1ed7 tr\u1ee3 x\u00e1c th\u1ef1c Digest, khi\u1ebfn n\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i x\u00e1c th\u1ef1c Digest<\/h2>\n<p>C\u00f3 hai lo\u1ea1i x\u00e1c th\u1ef1c Digest:<\/p>\n<ol>\n<li>\n<p><strong>X\u00e1c th\u1ef1c quy\u1ec1n truy c\u1eadp th\u00f4ng b\u00e1o<\/strong>: \u0110\u00e2y l\u00e0 h\u00ecnh th\u1ee9c x\u00e1c th\u1ef1c Digest ti\u00eau chu\u1ea9n, s\u1eed d\u1ee5ng quy tr\u00ecnh \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n<\/li>\n<li>\n<p><strong>X\u00e1c th\u1ef1c proxy th\u00f4ng b\u00e1o<\/strong>: Bi\u1ebfn th\u1ec3 n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1edbi m\u00e1y ch\u1ee7 proxy. Khi m\u00e1y ch\u1ee7 proxy nh\u1eadn \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u t\u1eeb m\u00e1y kh\u00e1ch, n\u00f3 s\u1ebd x\u00e1c th\u1ef1c m\u00e1y kh\u00e1ch b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng X\u00e1c th\u1ef1c proxy Digest tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch.<\/p>\n<\/li>\n<\/ol>\n<p>H\u00e3y t\u00f3m t\u1eaft nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa hai lo\u1ea1i trong b\u1ea3ng sau:<\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>X\u00e1c th\u1ef1c quy\u1ec1n truy c\u1eadp th\u00f4ng b\u00e1o<\/th>\n<th>X\u00e1c th\u1ef1c proxy th\u00f4ng b\u00e1o<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u1ee5c \u0111\u00edch<\/td>\n<td>X\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 tr\u00ean m\u00e1y ch\u1ee7.<\/td>\n<td>X\u00e1c th\u1ef1c kh\u00e1ch h\u00e0ng truy c\u1eadp t\u00e0i nguy\u00ean th\u00f4ng qua m\u00e1y ch\u1ee7 proxy.<\/td>\n<\/tr>\n<tr>\n<td>Qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c<\/td>\n<td>Giao ti\u1ebfp tr\u1ef1c ti\u1ebfp gi\u1eefa client v\u00e0 server.<\/td>\n<td>X\u00e1c th\u1ef1c m\u00e1y kh\u00e1ch b\u1eb1ng proxy tr\u01b0\u1edbc khi truy c\u1eadp m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau.<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e0nh ph\u1ea7n ch\u00ednh<\/td>\n<td>T\u00ean ng\u01b0\u1eddi d\u00f9ng, V\u01b0\u01a1ng qu\u1ed1c, Nonce, URI, Ph\u1ea3n h\u1ed3i, Thu\u1eadt to\u00e1n, QoP.<\/td>\n<td>T\u00ean ng\u01b0\u1eddi d\u00f9ng, V\u01b0\u01a1ng qu\u1ed1c, Nonce, URI, Ph\u1ea3n h\u1ed3i, Thu\u1eadt to\u00e1n, QoP.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng x\u00e1c th\u1ef1c Digest, 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>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n<ol>\n<li>\n<p><strong>\u1ee8ng d\u1ee5ng web<\/strong>: X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o \u0111\u01b0\u1ee3c c\u00e1c \u1ee9ng d\u1ee5ng web s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o m\u1eadt c\u00e1c trang ho\u1eb7c khu v\u1ef1c nh\u1ea1y c\u1ea3m y\u00eau c\u1ea7u x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<li>\n<p><strong>M\u00e1y ch\u1ee7 proxy<\/strong>: Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng X\u00e1c th\u1ef1c Proxy Digest \u0111\u1ec3 x\u00e1c th\u1ef1c \u1ee9ng d\u1ee5ng kh\u00e1ch tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u c\u1ee7a ch\u00fang.<\/p>\n<\/li>\n<li>\n<p><strong>X\u00e1c th\u1ef1c API<\/strong>: X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o m\u1eadt API, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng kh\u00e1ch h\u00e0ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp t\u00e0i nguy\u00ean c\u1ee7a API.<\/p>\n<\/li>\n<\/ol>\n<p>Tuy nhi\u00ean, x\u00e1c th\u1ef1c Digest c\u0169ng \u0111i k\u00e8m v\u1edbi m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c:<\/p>\n<ol>\n<li>\n<p><strong>M\u1ed1i quan t\u00e2m v\u1ec1 b\u1ea3o m\u1eadt<\/strong>: M\u1eb7c d\u00f9 x\u00e1c th\u1ef1c Digest an to\u00e0n h\u01a1n x\u00e1c th\u1ef1c C\u01a1 b\u1ea3n nh\u01b0ng n\u00f3 kh\u00f4ng tr\u00e1nh kh\u1ecfi m\u1ecdi ki\u1ec3u t\u1ea5n c\u00f4ng. V\u00ed d\u1ee5, n\u00f3 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng b\u1edfi k\u1ebb trung gian.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ed7 tr\u1ee3 tr\u00ecnh duy\u1ec7t h\u1ea1n ch\u1ebf<\/strong>: M\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t c\u0169 h\u01a1n c\u00f3 th\u1ec3 kh\u00f4ng h\u1ed7 tr\u1ee3 x\u00e1c th\u1ef1c Digest, khi\u1ebfn n\u00f3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ebft th\u1eddi gian ch\u1edd<\/strong>: S\u1ed1 nonce c\u00f3 tu\u1ed5i th\u1ecd gi\u1edbi h\u1ea1n v\u00e0 n\u1ebfu m\u1ed9t y\u00eau c\u1ea7u m\u1ea5t qu\u00e1 nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 \u0111\u1ebfn m\u00e1y ch\u1ee7 th\u00ec s\u1ed1 nonce c\u00f3 th\u1ec3 h\u1ebft h\u1ea1n, g\u00e2y ra l\u1ed7i x\u00e1c th\u1ef1c.<\/p>\n<\/li>\n<\/ol>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt b\u1ed5 sung nh\u01b0 HTTPS \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c nghe l\u00e9n v\u00e0 \u0111\u1eb7t c\u00e1c gi\u00e1 tr\u1ecb th\u1eddi gian ch\u1edd th\u00edch h\u1ee3p \u0111\u1ec3 c\u00e2n b\u1eb1ng t\u00ednh b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng.<\/p>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>H\u00e3y so s\u00e1nh x\u00e1c th\u1ef1c Digest v\u1edbi m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c ph\u1ed5 bi\u1ebfn kh\u00e1c l\u00e0 X\u00e1c th\u1ef1c c\u01a1 b\u1ea3n:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0111\u1eb7c tr\u01b0ng<\/th>\n<th>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o<\/th>\n<th>X\u00e1c th\u1ef1c c\u01a1 b\u1ea3n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Truy\u1ec1n th\u00f4ng tin x\u00e1c th\u1ef1c<\/td>\n<td>Th\u00f4ng tin x\u00e1c th\u1ef1c b\u0103m \u0111\u01b0\u1ee3c trao \u0111\u1ed5i qua m\u1ea1ng.<\/td>\n<td>Th\u00f4ng tin x\u00e1c th\u1ef1c v\u0103n b\u1ea3n g\u1ed1c \u0111\u01b0\u1ee3c trao \u0111\u1ed5i qua m\u1ea1ng.<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3o v\u1ec7<\/td>\n<td>An to\u00e0n h\u01a1n v\u00ec m\u1eadt kh\u1ea9u th\u1ef1c t\u1ebf kh\u00f4ng b\u1ecb l\u1ed9.<\/td>\n<td>\u00cdt an to\u00e0n h\u01a1n v\u00ec m\u1eadt kh\u1ea9u \u0111\u01b0\u1ee3c truy\u1ec1n d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n g\u1ed1c.<\/td>\n<\/tr>\n<tr>\n<td>H\u1ed7 tr\u1ee3 tr\u00ecnh duy\u1ec7t<\/td>\n<td>\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i.<\/td>\n<td>\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 r\u1ed9ng r\u00e3i b\u1edfi t\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t.<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/td>\n<td>Ph\u1ee9c t\u1ea1p h\u01a1n do c\u01a1 ch\u1ebf ph\u1ea3n \u1ee9ng-th\u00e1ch th\u1ee9c.<\/td>\n<td>\u0110\u01a1n gi\u1ea3n h\u01a1n v\u00ec n\u00f3 li\u00ean quan \u0111\u1ebfn m\u1ed9t y\u00eau c\u1ea7u duy nh\u1ea5t v\u1ec1 th\u00f4ng tin x\u00e1c th\u1ef1c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn x\u00e1c th\u1ef1c Digest<\/h2>\n<p>X\u00e1c th\u1ef1c th\u00f4ng b\u00e1o \u0111\u00e3 ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u1ea3 thi \u0111\u1ec3 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng an to\u00e0n trong nhi\u1ec1u n\u0103m. Tuy nhi\u00ean, v\u1edbi b\u1ed1i c\u1ea3nh b\u1ea3o m\u1eadt web ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n, c\u00e1c c\u00f4ng ngh\u1ec7 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1edbi c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng h\u01a1n n\u1eefa kh\u1ea3 n\u0103ng x\u00e1c th\u1ef1c v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u.<\/p>\n<p>M\u1ed9t h\u01b0\u1edbng ti\u1ec1m n\u0103ng l\u00e0 \u00e1p d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n b\u0103m m\u1ea1nh m\u1ebd h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 SHA-256 ho\u1eb7c SHA-512, \u0111\u1ec3 thay th\u1ebf thu\u1eadt to\u00e1n MD5 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. C\u00e1c thu\u1eadt to\u00e1n n\u00e0y cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i cao h\u01a1n tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng v\u0169 phu ti\u1ec1m \u1ea9n.<\/p>\n<p>Ngo\u00e0i ra, nh\u1eefng ti\u1ebfn b\u1ed9 trong x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) v\u00e0 x\u00e1c th\u1ef1c sinh tr\u1eafc h\u1ecdc c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch s\u1eed d\u1ee5ng x\u00e1c th\u1ef1c Digest k\u1ebft h\u1ee3p v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt ph\u1ee9c t\u1ea1p h\u01a1n n\u00e0y \u0111\u1ec3 cung c\u1ea5p c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi x\u00e1c th\u1ef1c Digest<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt, hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh \u1ea9n danh c\u1ee7a m\u1ea1ng. Khi k\u1ebft h\u1ee3p v\u1edbi X\u00e1c th\u1ef1c Proxy Digest, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 th\u1ef1c thi x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng tr\u01b0\u1edbc khi c\u1ea5p quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c t\u00e0i nguy\u00ean b\u00ean ngo\u00e0i. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp internet th\u00f4ng qua proxy.<\/p>\n<p>M\u00e1y ch\u1ee7 proxy c\u0169ng c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 web, cho ph\u00e9p x\u00e1c th\u1ef1c Digest di\u1ec5n ra \u1edf c\u1ea5p proxy tr\u01b0\u1edbc khi y\u00eau c\u1ea7u \u0111\u1ebfn \u0111\u00edch cu\u1ed1i c\u00f9ng. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y gi\u00fap gi\u1ea3m t\u1ea3i qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c t\u1eeb m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau, c\u00f3 kh\u1ea3 n\u0103ng gi\u1ea3m t\u1ea3i cho m\u00e1y ch\u1ee7 v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 x\u00e1c th\u1ef1c Digest, h\u00e3y xem x\u00e9t kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc2617\" target=\"_new\" rel=\"noopener nofollow\">RFC 2617 \u2013 X\u00e1c th\u1ef1c HTTP: X\u00e1c th\u1ef1c quy\u1ec1n truy c\u1eadp c\u01a1 b\u1ea3n v\u00e0 th\u00f4ng b\u00e1o<\/a><\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Authentication#digest_authentication\" target=\"_new\" rel=\"noopener nofollow\">T\u00e0i li\u1ec7u web MDN \u2013 X\u00e1c th\u1ef1c truy c\u1eadp th\u00f4ng b\u00e1o HTTP<\/a><\/li>\n<li><a href=\"https:\/\/www.sitepoint.com\/http-authentication-in-node-js\/\" target=\"_new\" rel=\"noopener nofollow\">C\u1ea5u tr\u00fac c\u1ee7a x\u00e1c th\u1ef1c HTTP trong Node.js<\/a><\/li>\n<li><a href=\"https:\/\/cheatsheetseries.owasp.org\/cheatsheets\/Authentication_Cheat_Sheet.html\" target=\"_new\" rel=\"noopener nofollow\">B\u1ea3ng cheat x\u00e1c th\u1ef1c OWASP<\/a><\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, x\u00e1c th\u1ef1c Digest l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p m\u1ea1nh m\u1ebd \u0111\u1ec3 b\u1ea3o m\u1eadt c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 m\u00e1y ch\u1ee7 proxy. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf ph\u1ea3n h\u1ed3i th\u1eed th\u00e1ch v\u00e0 trao \u0111\u1ed5i th\u00f4ng tin x\u00e1c th\u1ef1c b\u0103m, n\u00f3 cung c\u1ea5p gi\u1ea3i ph\u00e1p thay th\u1ebf an to\u00e0n h\u01a1n cho x\u00e1c th\u1ef1c C\u01a1 b\u1ea3n. Tuy nhi\u00ean, gi\u1ed1ng nh\u01b0 b\u1ea5t k\u1ef3 bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt n\u00e0o, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i lu\u00f4n c\u1eadp nh\u1eadt c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 c\u00f4ng ngh\u1ec7 t\u1ed1t nh\u1ea5t m\u1edbi nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh hi\u1ec7u qu\u1ea3 li\u00ean t\u1ee5c c\u1ee7a x\u00e1c th\u1ef1c Digest trong vi\u1ec7c b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m v\u00e0 th\u00f4ng tin x\u00e1c th\u1ef1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>","protected":false},"featured_media":476814,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476813","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Digest Authentication: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is Digest authentication, and why is it essential for web applications and proxy servers?","answer":"<p>Digest authentication is a secure method of user authentication used in web applications and proxy servers. It ensures that passwords are never transmitted in plaintext, enhancing security against interception and unauthorized access. By employing a challenge-response mechanism and exchanging hashed credentials, Digest authentication offers a more robust alternative to Basic authentication.<\/p>"},{"question":"How does Digest authentication work, and what are its key components?","answer":"<p>Digest authentication involves a multi-step process. When a user attempts to access a protected resource, the server generates a nonce (a unique token) and sends it to the client along with other parameters. The client calculates a hash of the user's credentials, including the nonce, and sends it back to the server. The server verifies the response by recalculating the hash using the stored password. Key components include username, realm, nonce, URI, response, algorithm, and QoP (Quality of Protection).<\/p>"},{"question":"What types of Digest authentication exist, and how do they differ?","answer":"<p>There are two types of Digest authentication:<\/p><ol><li>Digest Access Authentication: Used for authenticating users accessing protected resources on a server.<\/li><li>Digest Proxy Authentication: Designed for proxy servers to authenticate clients before forwarding requests to the target server. Both types share similar components and mechanisms.<\/li><\/ol>"},{"question":"How can Digest authentication be used in web applications and proxy servers?","answer":"<p>In web applications, Digest authentication secures sensitive pages and areas that require user authentication. Proxy servers can use Digest Proxy Authentication to authenticate clients before granting access to external resources. It can also act as an intermediary, performing authentication before forwarding the request to the final destination.<\/p>"},{"question":"What are the main advantages of Digest authentication over Basic authentication?","answer":"<p>Digest authentication offers several advantages:<\/p><ol><li>Enhanced Security: User passwords are not exposed in plaintext, making it more secure.<\/li><li>Protection against Replay Attacks: Nonces prevent attackers from reusing intercepted credentials.<\/li><li>Widely Supported: Most modern browsers and servers support Digest authentication, ensuring broader applicability.<\/li><li>Flexible Hash Algorithms: Digest authentication allows various hashing algorithms for improved security.<\/li><\/ol>"},{"question":"Are there any challenges or potential problems with Digest authentication?","answer":"<p>While Digest authentication is more secure, it is not immune to certain attacks like man-in-the-middle. Additionally, some older browsers might not support it fully. Nonce timeout can also cause authentication failures if a request takes too long to reach the server. To address these issues, using additional security measures like HTTPS and setting appropriate nonce timeout values is recommended.<\/p>"},{"question":"What can we expect for the future of Digest authentication?","answer":"<p>The future of Digest authentication may include the adoption of more robust hashing algorithms, such as SHA-256 or SHA-512, for increased security. Additionally, advancements in multi-factor and biometric authentication could complement Digest authentication to provide even stronger user verification methods.<\/p>"},{"question":"How does Digest Proxy Authentication contribute to proxy server security?","answer":"<p>Digest Proxy Authentication allows proxy servers to authenticate clients before granting access to external resources. By enforcing user authentication at the proxy level, it can reduce the load on the target server and enhance overall performance. This additional layer of security helps ensure that only authorized clients can access the internet through the proxy.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476813","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\/476813\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476814"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}