{"id":1609,"date":"2020-09-02T05:31:00","date_gmt":"2020-09-02T05:31:00","guid":{"rendered":"https:\/\/vnexpress.link\/?p=1609"},"modified":"2024-09-02T06:03:08","modified_gmt":"2024-09-02T06:03:08","slug":"tai-xiu-md5-co-an-toan-va-cong-bang-khong","status":"publish","type":"post","link":"https:\/\/vnexpress.link\/index.php\/2020\/09\/02\/tai-xiu-md5-co-an-toan-va-cong-bang-khong\/","title":{"rendered":"T\u00e0i x\u1ec9u MD5 c\u00f3 an to\u00e0n v\u00e0 c\u00f4ng b\u1eb1ng kh\u00f4ng?"},"content":{"rendered":"\n<p><a href=\"https:\/\/taixiumd5net.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">TaixiuMD5<\/a>&nbsp;l\u00e0 m\u1ed9t phi\u00ean b\u1ea3n n\u00e2ng cao c\u1ee7a tr\u00f2 ch\u01a1i t\u00e0i x\u1ec9u truy\u1ec1n th\u1ed1ng, k\u1ebft h\u1ee3p c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a MD5 \u0111\u1ec3 mang l\u1ea1i s\u1ef1 minh b\u1ea1ch v\u00e0 c\u00f4ng b\u1eb1ng tuy\u1ec7t \u0111\u1ed1i cho ng\u01b0\u1eddi ch\u01a1i. Tuy nhi\u00ean, \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a l\u1ee3i \u00edch n\u00e0y, b\u1ea1n c\u1ea7n hi\u1ec3u r\u00f5 c\u00e1ch s\u1eed d\u1ee5ng m\u00e3 MD5 \u0111\u1ec3 ki\u1ec3m tra k\u1ebft qu\u1ea3. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n t\u1eebng b\u01b0\u1edbc c\u00e1ch th\u1ef1c hi\u1ec7n, gi\u00fap b\u1ea1n t\u1ef1 tin h\u01a1n khi tham gia c\u00e1 c\u01b0\u1ee3c t\u00e0i x\u1ec9u MD5.<\/p>\n\n\n\n<p><strong>1. MD5 l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao n\u00f3 quan tr\u1ecdng trong t\u00e0i x\u1ec9u MD5?<\/strong><\/p>\n\n\n\n<p>MD5 (Message-Digest Algorithm 5) l\u00e0 m\u1ed9t thu\u1eadt to\u00e1n b\u0103m m\u1eadt m\u00e3, c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra m\u1ed9t chu\u1ed7i 32 k\u00fd t\u1ef1 duy nh\u1ea5t (hash) t\u1eeb b\u1ea5t k\u1ef3 d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o n\u00e0o. \u0110\u1eb7c \u0111i\u1ec3m quan tr\u1ecdng c\u1ee7a MD5 l\u00e0 t\u00ednh \u201cm\u1ed9t chi\u1ec1u\u201d \u2013 kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c t\u1eeb chu\u1ed7i hash \u0111\u1ec3 t\u00ecm ra d\u1eef li\u1ec7u g\u1ed1c, v\u00e0 m\u1ed7i thay \u0111\u1ed5i d\u00f9 nh\u1ecf nh\u1ea5t trong d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o c\u0169ng s\u1ebd t\u1ea1o ra m\u1ed9t chu\u1ed7i hash ho\u00e0n to\u00e0n kh\u00e1c.<\/p>\n\n\n\n<p>Trong t\u00e0i x\u1ec9u MD5, thu\u1eadt to\u00e1n n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra m\u1ed9t chu\u1ed7i hash \u0111\u1ea1i di\u1ec7n cho k\u1ebft qu\u1ea3 c\u1ee7a v\u00e1n c\u01b0\u1ee3c&nbsp;<strong>tr\u01b0\u1edbc khi<\/strong>&nbsp;x\u00fac x\u1eafc \u0111\u01b0\u1ee3c tung. Chu\u1ed7i hash n\u00e0y \u0111\u01b0\u1ee3c c\u00f4ng khai cho ng\u01b0\u1eddi ch\u01a1i. Sau khi v\u00e1n c\u01b0\u1ee3c k\u1ebft th\u00fac, k\u1ebft qu\u1ea3 th\u1ef1c t\u1ebf (c\u00e1c m\u1eb7t x\u00fac x\u1eafc) s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra m\u1ed9t chu\u1ed7i hash kh\u00e1c. Ng\u01b0\u1eddi ch\u01a1i c\u00f3 th\u1ec3 t\u1ef1 ki\u1ec3m ch\u1ee9ng b\u1eb1ng c\u00e1ch so s\u00e1nh hai chu\u1ed7i hash n\u00e0y. N\u1ebfu ch\u00fang kh\u1edbp nhau, ch\u1ee9ng t\u1ecf k\u1ebft qu\u1ea3 l\u00e0 c\u00f4ng b\u1eb1ng v\u00e0 kh\u00f4ng b\u1ecb thay \u0111\u1ed5i<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/tranphu.net\/wp-content\/uploads\/2022\/05\/keo-tai-xiu-la-gi.jpeg\" alt=\"\" class=\"wp-image-1213\"\/><\/figure>\n\n\n\n<p><strong>2. C\u00e1c b\u01b0\u1edbc ki\u1ec3m tra k\u1ebft qu\u1ea3 b\u1eb1ng m\u00e3 MD5<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u01b0\u1edbc 1: L\u1ea5y m\u00e3 MD5 tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u v\u00e1n c\u01b0\u1ee3c<\/strong>\n<ul class=\"wp-block-list\">\n<li>Tr\u01b0\u1edbc khi v\u00e1n c\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u, nh\u00e0 c\u00e1i s\u1ebd cung c\u1ea5p m\u1ed9t chu\u1ed7i MD5 (g\u1ecdi l\u00e0 MD5 tr\u01b0\u1edbc). H\u00e3y ch\u1eafc ch\u1eafn b\u1ea1n \u0111\u00e3 sao ch\u00e9p ho\u1eb7c ghi l\u1ea1i ch\u00ednh x\u00e1c chu\u1ed7i n\u00e0y.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>B\u01b0\u1edbc 2: \u0110\u1eb7t c\u01b0\u1ee3c<\/strong>\n<ul class=\"wp-block-list\">\n<li>Ti\u1ebfn h\u00e0nh \u0111\u1eb7t c\u01b0\u1ee3c v\u00e0o c\u00e1c c\u1eeda b\u1ea1n mong mu\u1ed1n nh\u01b0 T\u00e0i, X\u1ec9u ho\u1eb7c c\u00e1c c\u1eeda c\u01b0\u1ee3c kh\u00e1c theo quy \u0111\u1ecbnh c\u1ee7a nh\u00e0 c\u00e1i.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>B\u01b0\u1edbc 3: Ghi nh\u1eadn k\u1ebft qu\u1ea3 v\u00e0 m\u00e3 MD5 sau khi m\u1edf b\u00e1t<\/strong>\n<ul class=\"wp-block-list\">\n<li>Sau khi v\u00e1n c\u01b0\u1ee3c k\u1ebft th\u00fac, nh\u00e0 c\u00e1i s\u1ebd c\u00f4ng b\u1ed1 k\u1ebft qu\u1ea3 (c\u00e1c m\u1eb7t x\u00fac x\u1eafc) v\u00e0 m\u1ed9t chu\u1ed7i MD5 m\u1edbi (g\u1ecdi l\u00e0 MD5 sau). H\u00e3y ghi l\u1ea1i k\u1ebft qu\u1ea3 v\u00e0 chu\u1ed7i MD5 n\u00e0y.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>B\u01b0\u1edbc 4: S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ki\u1ec3m tra MD5<\/strong>\n<ul class=\"wp-block-list\">\n<li>C\u00f3 nhi\u1ec1u c\u00f4ng c\u1ee5 ki\u1ec3m tra MD5 tr\u1ef1c tuy\u1ebfn mi\u1ec5n ph\u00ed m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li>Nh\u1eadp k\u1ebft qu\u1ea3 c\u1ee7a 3 m\u1eb7t x\u00fac x\u1eafc (v\u00ed d\u1ee5: 1-3-5) v\u00e0o c\u00f4ng c\u1ee5.<\/li>\n\n\n\n<li>M\u1ed9t s\u1ed1 nh\u00e0 c\u00e1i c\u00f3 th\u1ec3 y\u00eau c\u1ea7u b\u1ea1n nh\u1eadp th\u00eam m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 ng\u1eabu nhi\u00ean (\u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cseed\u201d ho\u1eb7c \u201csalt\u201d) m\u00e0 h\u1ecd \u0111\u00e3 cung c\u1ea5p tr\u01b0\u1edbc \u0111\u00f3. N\u1ebfu c\u00f3, h\u00e3y nh\u1eadp c\u1ea3 chu\u1ed7i n\u00e0y v\u00e0o c\u00f4ng c\u1ee5.<\/li>\n\n\n\n<li>C\u00f4ng c\u1ee5 s\u1ebd t\u1ea1o ra m\u1ed9t chu\u1ed7i MD5 m\u1edbi t\u1eeb d\u1eef li\u1ec7u b\u1ea1n v\u1eeba nh\u1eadp.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>B\u01b0\u1edbc 5: So s\u00e1nh k\u1ebft qu\u1ea3<\/strong>\n<ul class=\"wp-block-list\">\n<li>So s\u00e1nh chu\u1ed7i MD5 b\u1ea1n v\u1eeba t\u1ea1o ra v\u1edbi MD5 sau \u0111\u01b0\u1ee3c nh\u00e0 c\u00e1i cung c\u1ea5p.<\/li>\n\n\n\n<li>N\u1ebfu hai chu\u1ed7i n\u00e0y\u00a0<strong>tr\u00f9ng kh\u1edbp<\/strong>, ch\u1ee9ng t\u1ecf k\u1ebft qu\u1ea3 l\u00e0\u00a0<strong>c\u00f4ng b\u1eb1ng v\u00e0 kh\u00f4ng b\u1ecb thay \u0111\u1ed5i<\/strong>.<\/li>\n\n\n\n<li>N\u1ebfu hai chu\u1ed7i\u00a0<strong>kh\u00f4ng kh\u1edbp<\/strong>, c\u00f3 th\u1ec3 c\u00f3 s\u1ef1 gian l\u1eadn ho\u1eb7c l\u1ed7i h\u1ec7 th\u1ed1ng. H\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng c\u1ee7a nh\u00e0 c\u00e1i \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>3. L\u01b0u \u00fd quan tr\u1ecdng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ch\u1ecdn nh\u00e0 c\u00e1i uy t\u00edn:<\/strong>\u00a0Ch\u1ec9 ch\u01a1i t\u00e0i x\u1ec9u MD5 t\u1ea1i c\u00e1c nh\u00e0 c\u00e1i uy t\u00edn, c\u00f3 gi\u1ea5y ph\u00e9p ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f4ng khai minh b\u1ea1ch v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng MD5.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra k\u1ef9 th\u00f4ng tin:<\/strong>\u00a0\u0110\u1ea3m b\u1ea3o b\u1ea1n ghi l\u1ea1i ch\u00ednh x\u00e1c MD5 tr\u01b0\u1edbc, k\u1ebft qu\u1ea3 v\u00e0 MD5 sau \u0111\u1ec3 tr\u00e1nh sai s\u00f3t trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra.<\/li>\n\n\n\n<li><strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 \u0111\u00e1ng tin c\u1eady:<\/strong>\u00a0Ch\u1ecdn c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m tra MD5 t\u1eeb c\u00e1c ngu\u1ed3n uy t\u00edn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a k\u1ebft qu\u1ea3.<\/li>\n<\/ul>\n\n\n\n<p><strong>K\u1ebft lu\u1eadn<\/strong><\/p>\n\n\n\n<p>S\u1eed d\u1ee5ng m\u00e3 MD5 \u0111\u1ec3 ki\u1ec3m tra k\u1ebft qu\u1ea3 l\u00e0 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh c\u00f4ng b\u1eb1ng v\u00e0 minh b\u1ea1ch khi ch\u01a1i t\u00e0i x\u1ec9u tr\u1ef1c tuy\u1ebfn. B\u1eb1ng c\u00e1ch l\u00e0m theo c\u00e1c b\u01b0\u1edbc h\u01b0\u1edbng d\u1eabn tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 tin tham gia c\u00e1 c\u01b0\u1ee3c v\u00e0 b\u1ea3o v\u1ec7 quy\u1ec1n l\u1ee3i c\u1ee7a m\u00ecnh. H\u00e3y lu\u00f4n t\u1ec9nh t\u00e1o, ch\u01a1i c\u00f3 tr\u00e1ch nhi\u1ec7m v\u00e0 ch\u00fac b\u1ea1n may m\u1eafn!<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Share Article:<\/h5>\n\n\n\n<p><a href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=https:\/\/tranphu.net\/?p=3328\" target=\"_blank\" rel=\"noopener\"><\/a>&nbsp;<a href=\"http:\/\/twitter.com\/share?text=T%C3%A0i+X%E1%BB%89u+MD5%3A+C%C3%A1ch+S%E1%BB%AD+D%E1%BB%A5ng+M%C3%A3+MD5+%C4%90%E1%BB%83+Ki%E1%BB%83m+Tra+K%E1%BA%BFt+Qu%E1%BA%A3+%E2%80%93+%C4%90%E1%BA%A3m+B%E1%BA%A3o+C%C3%B4ng+B%E1%BA%B1ng+Tuy%E1%BB%87t+%C4%90%E1%BB%91i&amp;url=https:\/\/tranphu.net\/?p=3328\" target=\"_blank\" rel=\"noopener\"><\/a>&nbsp;<a rel=\"noreferrer noopener\" href=\"mailto:?subject=T%C3%A0i+X%E1%BB%89u+MD5%3A+C%C3%A1ch+S%E1%BB%AD+D%E1%BB%A5ng+M%C3%A3+MD5+%C4%90%E1%BB%83+Ki%E1%BB%83m+Tra+K%E1%BA%BFt+Qu%E1%BA%A3+%E2%80%93+%C4%90%E1%BA%A3m+B%E1%BA%A3o+C%C3%B4ng+B%E1%BA%B1ng+Tuy%E1%BB%87t+%C4%90%E1%BB%91i&amp;body=https:\/\/tranphu.net\/?p=3328\" target=\"_blank\"><\/a>&nbsp;<a href=\"https:\/\/api.whatsapp.com\/send?text=https:\/\/tranphu.net\/?p=3328\" target=\"_blank\" rel=\"noopener\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>TaixiuMD5&nbsp;l\u00e0 m\u1ed9t phi\u00ean b\u1ea3n n\u00e2ng cao c\u1ee7a tr\u00f2 ch\u01a1i t\u00e0i x\u1ec9u truy\u1ec1n th\u1ed1ng, k\u1ebft h\u1ee3p c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a MD5 \u0111\u1ec3 mang l\u1ea1i s\u1ef1 minh b\u1ea1ch v\u00e0 c\u00f4ng b\u1eb1ng tuy\u1ec7t \u0111\u1ed1i cho ng\u01b0\u1eddi ch\u01a1i. Tuy nhi\u00ean, \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a l\u1ee3i \u00edch n\u00e0y, b\u1ea1n c\u1ea7n hi\u1ec3u r\u00f5 c\u00e1ch s\u1eed d\u1ee5ng m\u00e3 MD5 \u0111\u1ec3 ki\u1ec3m &hellip; <a href=\"https:\/\/vnexpress.link\/index.php\/2020\/09\/02\/tai-xiu-md5-co-an-toan-va-cong-bang-khong\/\" class=\"more-link\">Ti\u1ebfp t\u1ee5c \u0111\u1ecdc <span class=\"screen-reader-text\">T\u00e0i x\u1ec9u MD5 c\u00f3 an to\u00e0n v\u00e0 c\u00f4ng b\u1eb1ng kh\u00f4ng?<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-1609","post","type-post","status-publish","format-standard","hentry","category-giai-tri"],"_links":{"self":[{"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/posts\/1609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/comments?post=1609"}],"version-history":[{"count":1,"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/posts\/1609\/revisions"}],"predecessor-version":[{"id":1610,"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/posts\/1609\/revisions\/1610"}],"wp:attachment":[{"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/media?parent=1609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/categories?post=1609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vnexpress.link\/index.php\/wp-json\/wp\/v2\/tags?post=1609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}