{"id":6976,"date":"2026-07-27T11:43:13","date_gmt":"2026-07-27T03:43:13","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/user-authentication-oauth2-activity-diagrams\/"},"modified":"2026-07-27T11:43:13","modified_gmt":"2026-07-27T03:43:13","slug":"user-authentication-oauth2-activity-diagrams","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/user-authentication-oauth2-activity-diagrams\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng lu\u1ed3ng x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 OAuth 2.0"},"content":{"rendered":"<article class=\"auth-guide-container\">\n<header class=\"guide-header\"><img fetchpriority=\"high\" alt=\"A two-column hero banner graphic for a guide on visualizing secure user authentication. The left side features bold white text on a blue background: 'USER AUTHENTICATION &amp; OAUTH 2.0 FLOWS' and 'Mastering Multi-Factor Auth, PKCE &amp; Diagram-as-Code.' The right side displays a clean, blended technical activity diagram (image_2.png style) or schematic layout (image_4.png style) illustrating a complete OAuth 2.0 process flow with secure nodes and tokens, using a blue and white color scheme.\" class=\"alignnone size-full wp-image-6927\" decoding=\"async\" fetchpriority=\"high\" height=\"816\" sizes=\"(max-width: 1312px) 100vw, 1312px\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2026\/07\/oauth-pkce-mfa-activity-diagram-guide.jpg\" srcset=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2026\/07\/oauth-pkce-mfa-activity-diagram-guide.jpg 1312w, https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2026\/07\/oauth-pkce-mfa-activity-diagram-guide-300x187.jpg 300w, https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2026\/07\/oauth-pkce-mfa-activity-diagram-guide-1024x637.jpg 1024w, https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2026\/07\/oauth-pkce-mfa-activity-diagram-guide-768x478.jpg 768w\" width=\"1312\"\/><\/p>\n<p class=\"lead-text\">Thi\u1ebft k\u1ebf logic x\u00e1c th\u1ef1c v\u00e0 \u1ee7y quy\u1ec1n ng\u01b0\u1eddi d\u00f9ng an to\u00e0n \u0111\u00f2i h\u1ecfi s\u1ef1 r\u00f5 r\u00e0ng tuy\u1ec7t \u0111\u1ed1i. T\u1eeb c\u00e1c v\u00f2ng l\u1eb7p x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) \u0111\u1ebfn c\u00e1c c\u1ea5p ph\u00e9p m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE, vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1c giao d\u1ecbch token v\u00e0 c\u00e1c ranh gi\u1edbi b\u1ea3o m\u1eadt gi\u00fap ng\u0103n ng\u1eeba nh\u1eefng l\u1ed7i tri\u1ec3n khai nghi\u00eam tr\u1ecdng. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1c v\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng UML t\u1eebng b\u01b0\u1edbc, m\u00e3 ngu\u1ed3n PlantUML v\u00e0 c\u00e1c l\u1eddi nh\u1eafc AI \u0111\u00e3 s\u1eb5n s\u00e0ng s\u1eed d\u1ee5ng cho c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 h\u1ec7 th\u1ed1ng v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n<\/header>\n<hr\/>\n<nav class=\"table-of-contents\">\n<h2>M\u1ee5c l\u1ee5c<\/h2>\n<ul>\n<li><a href=\"#example-1\">V\u00ed d\u1ee5 1: \u0110\u0103ng nh\u1eadp b\u1eb1ng t\u00ean ng\u01b0\u1eddi d\u00f9ng\/m\u1eadt kh\u1ea9u ti\u00eau chu\u1ea9n k\u00e8m MFA<\/a><\/li>\n<li><a href=\"#example-2\">V\u00ed d\u1ee5 2: Lu\u1ed3ng m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE<\/a><\/li>\n<li><a href=\"#example-3\">V\u00ed d\u1ee5 3: X\u00e1c th\u1ef1c token JWT v\u00e0 lu\u1ed3ng l\u00e0m m\u1edbi im l\u1eb7ng<\/a><\/li>\n<li><a href=\"#prompt-engineering\">Thi\u1ebft k\u1ebf l\u1eddi nh\u1eafc cho c\u00e1c quy tr\u00ecnh b\u1ea3o m\u1eadt v\u00e0 x\u00e1c th\u1ef1c<\/a><\/li>\n<li><a href=\"#ai-workflow\">K\u1ebft n\u1ed1i sinh th\u00e0nh AI v\u1edbi bi\u1ec3u \u0111\u1ed3 d\u1ea1ng m\u00e3 trong Visual Paradigm<\/a><\/li>\n<li><a href=\"#faq\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<\/ul>\n<\/nav>\n<hr\/>\n<section id=\"example-1\">\n<h2>V\u00ed d\u1ee5 1: \u0110\u0103ng nh\u1eadp b\u1eb1ng t\u00ean ng\u01b0\u1eddi d\u00f9ng\/m\u1eadt kh\u1ea9u ti\u00eau chu\u1ea9n k\u00e8m MFA<\/h2>\n<p>S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng n\u00e0y m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 lu\u1ed3ng x\u00e1c th\u1ef1c th\u00f4ng tin \u0111\u0103ng nh\u1eadp, bao g\u1ed3m gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 t\u1ea5n c\u00f4ng brute-force v\u00e0 x\u00e1c th\u1ef1c m\u00e3 token x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA).<\/p>\n<h3>C\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh:<\/h3>\n<ul>\n<li><strong>C\u00e1c ph\u00e2n v\u00f9ng b\u1ec3 b\u01a1i (Swimlane):<\/strong>T\u00e1ch bi\u1ec7t giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (\u1ee9ng d\u1ee5ng kh\u00e1ch), backend API v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u\/\u0111\u01a1n v\u1ecb x\u00e1c th\u1ef1c.<\/li>\n<li><strong>\u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111i\u1ec1u ki\u1ec7n:<\/strong>\u0110\u00e1nh gi\u00e1 t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a m\u1eadt kh\u1ea9u v\u00e0 tr\u1ea1ng th\u00e1i kh\u00f3a t\u00e0i kho\u1ea3n.<\/li>\n<\/ul>\n<h3>M\u00e3 PlantUML:<\/h3>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Plantuml<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/#plantuml:ZPD1Rzim38Nl1lmVY1o6zZ3ireDpM8quMJqiHP1a6ufX1qPc6g6ov4dqjW3zyQFYfEvIhvYE4lNulIVgEZ1wRckJ9eyJeyaov4rZj4BMpZwcoU4yJRAfPVBmEP2tM1EyWGM6yClvQYo7SbCzm6YbxosKTYHR8fUtl8DyKOf8zWMDhf09blIZfS1oUsySnijw2nVBUFH9rvfX-biHLLIzlmJUaOMBRtSKlb-c2S0m841MwD0OtCDexHpCqUvFRS88RXrhHUDO5zWrQK8caAZUkgDeWOmRbBrtK1QBJd16h8HTATTAlzuht63OYHRPIc_FJKOZJuLp58NUmwbRLbhbgOukPgWDLP0pKzqmJ68hykF_CrhQdp5Hc7Z9oh968rQdtZl_qccVtpDOW8Wxd-KmjRWnWtd_6qHG5jv5xAtpSFMsqFVoT55jugekR2bPjPlwvVRV53t7OKG6AKJg0rdoSKXM589GmDeza0r7oRCdVPryACOJulCCu-foFBJeNdoWrxcVLrcFClty369cAtQUuEFNjMYerfFPon0kgTAU50CxA6GEDmuFlw-3l1PD-SP_0000\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Ch\u1ec9nh s\u1eeda Plantuml trong VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Plantuml<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/#plantuml:bLGzRzDG5DqZ-JzSPMedDWPde5LGIsb1HOhu4698d3H-YlrickTAaRgW3XrOo8Ig217BYe1A5KMmu3SmF2l_u_qJxdrsS02RZmosdFjnxZddlhSr5jrZ4VcUrJZLyZqVGb_B1Rv6heeTzzHgc0IhOTztTNeLWb2N7FXmUQtb6mPzzHLpJzGSV8mAhDBfXwY5wMsFEIDePg-oCypWfhY90SJPFjo3nzWTXAlb9mSnx7scvPaFuhXB-1_1m-_p22RgCW97f--e9Jk2ZOU4cmXu7gaOXfWqOu2jOmv2owa3sLJBYrkRs7d0OUDfMtr-jcar06gu0TXt29cRKLxYKtt1U4_50JGV40PtCVvYVH8Y0J0MGMWr1jvuW33xfgn0QYzZ66lvzYSYDs3lzc4EUA3JnMI591X2gpd3aGAT9ZoNKYNGor2ENpGTy3uxgb6GnBctbaulEGjBATPdj3l6b1vgHOgbttpma5gkmXKzquN0S1gprd-evsdvca6pKrBBfclkKo45C3S9AVcyGihIiTyv0XYMEzlOboGYkXLU_s5UdFZ93oDNOv7SrFGcE2vPXkPDMqNsBkh1LXd5dvMJ5RCLhKgAbVEH0oXk028OOInq6HqgJyrzEA5zSGgaYlNw2xqQIrPprJX0lzm5WvglMGry3Vj_8LGqBjUuceTziBoEuEwZ3dIHHg3c-Qbmt6XYcBbq1yommgmkfpr8p5T-KaUk4Q15DnTHsa8ylD--0m00\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-plantuml\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml\r\n|\u1ee8ng d\u1ee5ng kh\u00e1ch|\r\nstart\r\n:Nh\u1eadp t\u00ean ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1eadt kh\u1ea9u;\r\n:Click \"\u0110\u0103ng nh\u1eadp\";\r\n\r\n|API X\u00e1c th\u1ef1c|\r\n:Ki\u1ec3m tra d\u1eef li\u1ec7u y\u00eau c\u1ea7u;\r\nif (V\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9?) then ([C\u00f3])\r\n  |\u1ee8ng d\u1ee5ng kh\u00e1ch|\r\n  :Hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o \"Qu\u00e1 nhi\u1ec1u y\u00eau c\u1ea7u\";\r\n  stop\r\nelse ([Kh\u00f4ng])\r\n  |C\u01a1 s\u1edf d\u1eef li\u1ec7u \/ IDP|\r\n  :L\u1ea5y th\u00f4ng tin t\u00e0i kho\u1ea3n v\u00e0 m\u00e3 b\u0103m m\u1eadt kh\u1ea9u;\r\nendif\r\n\r\n|API X\u00e1c th\u1ef1c|\r\nif (M\u1eadt kh\u1ea9u kh\u1edbp?) then ([Kh\u00f4ng])\r\n  :T\u0103ng b\u1ed9 \u0111\u1ebfm l\u1ea7n th\u1eed th\u1ea5t b\u1ea1i;\r\n  |\u1ee8ng d\u1ee5ng kh\u00e1ch|\r\n  :Hi\u1ec3n th\u1ecb l\u1ed7i \"Th\u00f4ng tin \u0111\u0103ng nh\u1eadp kh\u00f4ng h\u1ee3p l\u1ec7\";\r\n  stop\r\nelse ([C\u00f3])\r\n  |API X\u00e1c th\u1ef1c|\r\n  if (MFA \u0111\u00e3 b\u1eadt?) then ([C\u00f3])\r\n    |\u1ee8ng d\u1ee5ng kh\u00e1ch|\r\n    :Y\u00eau c\u1ea7u nh\u1eadp m\u00e3 MFA 6 ch\u1eef s\u1ed1;\r\n    :G\u1eedi m\u00e3 MFA;\r\n    |API X\u00e1c th\u1ef1c|\r\n    if (M\u00e3 MFA h\u1ee3p l\u1ec7?) then ([C\u00f3])\r\n      :T\u1ea1o token phi\u00ean l\u00e0m vi\u1ec7c;\r\n    else ([Kh\u00f4ng])\r\n      |\u1ee8ng d\u1ee5ng kh\u00e1ch|\r\n      :Hi\u1ec3n th\u1ecb l\u1ed7i \"M\u00e3 MFA kh\u00f4ng h\u1ee3p l\u1ec7\";\r\n      stop\r\n    endif\r\n  else ([Kh\u00f4ng])\r\n    |API X\u00e1c th\u1ef1c|\r\n    :T\u1ea1o token phi\u00ean l\u00e0m vi\u1ec7c;\r\n  endif\r\nendif\r\n\r\n|\u1ee8ng d\u1ee5ng kh\u00e1ch|\r\n:L\u01b0u JWT an to\u00e0n v\u00e0 chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n;\r\nstop\r\n@enduml<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/#plantuml:bLGzRzDG5DqZ-JzSPMedDWPde5LGIsb1HOhu4698d3H-YlrickTAaRgW3XrOo8Ig217BYe1A5KMmu3SmF2l_u_qJxdrsS02RZmosdFjnxZddlhSr5jrZ4VcUrJZLyZqVGb_B1Rv6heeTzzHgc0IhOTztTNeLWb2N7FXmUQtb6mPzzHLpJzGSV8mAhDBfXwY5wMsFEIDePg-oCypWfhY90SJPFjo3nzWTXAlb9mSnx7scvPaFuhXB-1_1m-_p22RgCW97f--e9Jk2ZOU4cmXu7gaOXfWqOu2jOmv2owa3sLJBYrkRs7d0OUDfMtr-jcar06gu0TXt29cRKLxYKtt1U4_50JGV40PtCVvYVH8Y0J0MGMWr1jvuW33xfgn0QYzZ66lvzYSYDs3lzc4EUA3JnMI591X2gpd3aGAT9ZoNKYNGor2ENpGTy3uxgb6GnBctbaulEGjBATPdj3l6b1vgHOgbttpma5gkmXKzquN0S1gprd-evsdvca6pKrBBfclkKo45C3S9AVcyGihIiTyv0XYMEzlOboGYkXLU_s5UdFZ93oDNOv7SrFGcE2vPXkPDMqNsBkh1LXd5dvMJ5RCLhKgAbVEH0oXk028OOInq6HqgJyrzEA5zSGgaYlNw2xqQIrPprJX0lzm5WvglMGry3Vj_8LGqBjUuceTziBoEuEwZ3dIHHg3c-Qbmt6XYcBbq1yommgmkfpr8p5T-KaUk4Q15DnTHsa8ylD--0m00\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/#plantuml:ZPD1Rzim38Nl1lmVY1o6zZ3ireDpM8quMJqiHP1a6ufX1qPc6g6ov4dqjW3zyQFYfEvIhvYE4lNulIVgEZ1wRckJ9eyJeyaov4rZj4BMpZwcoU4yJRAfPVBmEP2tM1EyWGM6yClvQYo7SbCzm6YbxosKTYHR8fUtl8DyKOf8zWMDhf09blIZfS1oUsySnijw2nVBUFH9rvfX-biHLLIzlmJUaOMBRtSKlb-c2S0m841MwD0OtCDexHpCqUvFRS88RXrhHUDO5zWrQK8caAZUkgDeWOmRbBrtK1QBJd16h8HTATTAlzuht63OYHRPIc_FJKOZJuLp58NUmwbRLbhbgOukPgWDLP0pKzqmJ68hykF_CrhQdp5Hc7Z9oh968rQdtZl_qccVtpDOW8Wxd-KmjRWnWtd_6qHG5jv5xAtpSFMsqFVoT55jugekR2bPjPlwvVRV53t7OKG6AKJg0rdoSKXM589GmDeza0r7oRCdVPryACOJulCCu-foFBJeNdoWrxcVLrcFClty369cAtQUuEFNjMYerfFPon0kgTAU50CxA6GEDmuFlw-3l1PD-SP_0000\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>Ch\u1ec9nh s\u1eeda Plantuml trong VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3>L\u1eddi nh\u1eafc chatbot AI:<\/h3>\n<blockquote>\n<p><em>\u201cH\u00e3y t\u1ea1o m\u1ed9t s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng UML cho quy tr\u00ecnh \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng k\u00e8m MFA. S\u1eed d\u1ee5ng c\u00e1c ph\u00e2n v\u00f9ng b\u1ec3 b\u01a1i: \u1ee8ng d\u1ee5ng kh\u00e1ch, API X\u00e1c th\u1ef1c v\u00e0 C\u01a1 s\u1edf d\u1eef li\u1ec7u\/IDP. Ki\u1ec3m tra gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9, x\u00e1c minh m\u00e3 b\u0103m m\u1eadt kh\u1ea9u, v\u00e0 n\u1ebfu MFA \u0111\u01b0\u1ee3c b\u1eadt, y\u00eau c\u1ea7u nh\u1eadp m\u00e3 6 ch\u1eef s\u1ed1 tr\u01b0\u1edbc khi c\u1ea5p token phi\u00ean l\u00e0m vi\u1ec7c.\u201d<\/em><\/p>\n<\/blockquote>\n<\/section>\n<section id=\"example-2\">\n<h2>V\u00ed d\u1ee5 2: Lu\u1ed3ng m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE<\/h2>\n<p>G\u00f3i c\u1ea5p m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi Ch\u1ee9ng nh\u1eadn kh\u00f3a m\u00e3 trao \u0111\u1ed5i (PKCE) l\u00e0 ti\u00eau chu\u1ea9n ng\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng trang \u0111\u01a1n (SPAs) v\u00e0 \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng. Vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1c th\u1eed th\u00e1ch m\u00e3 v\u00e0 giao d\u1ecbch token \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7 giao th\u1ee9c.<\/p>\n<h3>C\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh:<\/h3>\n<ul>\n<li><strong>Sinh song song:<\/strong>Sinh ra <code>code_verifier<\/code> v\u00e0 <code>m\u00e3 th\u1eed th\u00e1ch m\u00e3 h\u00f3a<\/code> \u0111\u1ed3ng th\u1eddi tr\u01b0\u1edbc khi kh\u1edfi ch\u1ea1y tr\u00ecnh duy\u1ec7t.<\/li>\n<li><strong>X\u00e1c th\u1ef1c ch\u00e9o mi\u1ec1n:<\/strong>\u00c1nh x\u1ea1 c\u00e1c chuy\u1ec3n h\u01b0\u1edbng gi\u1eefa Client, M\u00e1y ch\u1ee7 x\u00e1c th\u1ef1c v\u00e0 M\u00e1y ch\u1ee7 t\u00e0i nguy\u00ean.<\/li>\n<\/ul>\n<h3>M\u00e3 PlantUML:<\/h3>\n<pre><code>@startuml\r\n|\u1ee8ng d\u1ee5ng Client (SPA)|\r\nstart\r\nfork\r\n  :T\u1ea1o m\u00e3 x\u00e1c th\u1ef1c PKCE;\r\nfork again\r\n  :T\u1ea1o m\u00e3 th\u1eed th\u00e1ch PKCE (SHA256);\r\nend fork\r\n:Chuy\u1ec3n h\u01b0\u1edbng tr\u00ecnh duy\u1ec7t \u0111\u1ebfn M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c v\u1edbi M\u00e3 th\u1eed th\u00e1ch;\r\n\r\n|M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c|\r\n:Y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng \u0111\u0103ng nh\u1eadp v\u00e0 \u0111\u1ed3ng \u00fd;\r\n|Ng\u01b0\u1eddi d\u00f9ng|\r\n:Ch\u1ea5p thu\u1eadn ph\u1ea1m vi v\u00e0 \u1ee7y quy\u1ec1n;\r\n\r\n|M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c|\r\n:Ph\u00e1t h\u00e0nh m\u00e3 \u1ee7y quy\u1ec1n c\u00f3 th\u1eddi h\u1ea1n ng\u1eafn;\r\n:Chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn URI chuy\u1ec3n h\u01b0\u1edbng c\u1ee7a Client;\r\n\r\n|\u1ee8ng d\u1ee5ng Client (SPA)|\r\n:Tr\u00edch xu\u1ea5t m\u00e3 \u1ee7y quy\u1ec1n;\r\n:G\u1eedi M\u00e3 + M\u00e3 x\u00e1c th\u1ef1c PKCE \u0111\u1ebfn \u0111i\u1ec3m cu\u1ed1i Token;\r\n\r\n|M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c|\r\n:Ki\u1ec3m tra m\u00e3 x\u00e1c th\u1ef1c v\u1edbi m\u00e3 th\u1eed th\u00e1ch;\r\nif (Ki\u1ec3m tra th\u00e0nh c\u00f4ng?) then ([C\u00f3])\r\n  :Ph\u00e1t h\u00e0nh M\u00e3 truy c\u1eadp v\u00e0 M\u00e3 l\u00e0m m\u1edbi;\r\n  |\u1ee8ng d\u1ee5ng Client (SPA)|\r\n  :L\u01b0u m\u00e3 truy c\u1eadp v\u00e0o b\u1ed9 nh\u1edb;\r\n  :L\u1ea5y h\u1ed3 s\u01a1 ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7;\r\nelse ([Th\u1ea5t b\u1ea1i])\r\n  |\u1ee8ng d\u1ee5ng Client (SPA)|\r\n  :Hi\u1ec3n th\u1ecb l\u1ed7i \u1ee7y quy\u1ec1n;\r\nendif\r\nstop\r\n@enduml<\/code><\/pre>\n<h3>G\u1ee3i \u00fd Chatbot AI:<\/h3>\n<blockquote>\n<p><em>\u201cT\u1ea1o s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng cho lu\u1ed3ng m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE. Hi\u1ec3n th\u1ecb vi\u1ec7c t\u1ea1o song song m\u00e3_verifier v\u00e0 m\u00e3_th\u1eed_th\u00e1ch, chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c, s\u1ef1 \u0111\u1ed3ng \u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, thu h\u1ed3i m\u00e3 v\u00e0 x\u00e1c minh token.\u201d<\/em><\/p>\n<\/blockquote>\n<\/section>\n<section id=\"example-3\">\n<h2>V\u00ed d\u1ee5 3: X\u00e1c th\u1ef1c Token JWT v\u00e0 lu\u1ed3ng l\u00e0m m\u1edbi \u00e2m th\u1ea7m<\/h2>\n<p>Qu\u1ea3n l\u00fd x\u00e1c th\u1ef1c API m\u1ed9t c\u00e1ch an to\u00e0n \u0111\u00f2i h\u1ecfi x\u00e1c th\u1ef1c c\u00e1c Token Web JSON (JWT) cho m\u1ed7i y\u00eau c\u1ea7u v\u00e0 t\u1ef1 \u0111\u1ed9ng l\u00e0m m\u1edbi c\u00e1c token \u0111\u00e3 h\u1ebft h\u1ea1n th\u00f4ng qua token l\u00e0m m\u1edbi n\u1ec1n m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3>C\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh:<\/h3>\n<ul>\n<li><strong>V\u00f2ng ph\u1ee5c h\u1ed3i b\u1ea5t \u0111\u1ed3ng b\u1ed9:<\/strong>Y\u00eau c\u1ea7u m\u1ed9t m\u00e3 truy c\u1eadp m\u1edbi khi m\u1ed9t <code>401 Kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n<\/code>ph\u1ea3n h\u1ed3i \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n.<\/li>\n<li><strong>X\u1eed l\u00fd h\u1ebft h\u1ea1n phi\u00ean:<\/strong>X\u00f3a b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 v\u00e0 chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn trang \u0111\u0103ng nh\u1eadp khi ch\u00ednh token l\u00e0m m\u1edbi h\u1ebft h\u1ea1n.<\/li>\n<\/ul>\n<h3>M\u00e3 PlantUML:<\/h3>\n<pre><code>@startuml\r\n|\u1ee8ng d\u1ee5ng Client|\r\nstart\r\n:G\u1eedi y\u00eau c\u1ea7u API v\u1edbi Token Bearer;\r\n\r\n|C\u1ed5ng API|\r\n:Ki\u1ec3m tra ti\u00eau \u0111\u1ec1 \u1ee7y quy\u1ec1n;\r\nif (Token h\u1ee3p l\u1ec7 v\u00e0 ch\u01b0a h\u1ebft h\u1ea1n?) then ([H\u1ee3p l\u1ec7])\r\n  :Chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u \u0111\u1ebfn Microservice;\r\n  |\u1ee8ng d\u1ee5ng Client|\r\n  :Nh\u1eadn d\u1eef li\u1ec7u t\u1ea3i tr\u1ecdng API;\r\n  stop\r\nelse ([H\u1ebft h\u1ea1n \/ 401])\r\n  |\u1ee8ng d\u1ee5ng Client|\r\n  :B\u1eaft l\u1ed7i 401;\r\n  :G\u1eedi token l\u00e0m m\u1edbi \u0111\u1ebfn \u0111i\u1ec3m cu\u1ed1i X\u00e1c th\u1ef1c;\r\n  \r\n  |API X\u00e1c th\u1ef1c|\r\n  if (Token l\u00e0m m\u1edbi h\u1ee3p l\u1ec7?) then ([C\u00f3])\r\n    :Ph\u00e1t h\u00e0nh m\u00e3 truy c\u1eadp m\u1edbi;\r\n    |\u1ee8ng d\u1ee5ng Client|\r\n    :C\u1eadp nh\u1eadt m\u00e3 truy c\u1eadp trong b\u1ed9 nh\u1edb;\r\n    :Th\u1eed l\u1ea1i y\u00eau c\u1ea7u API ban \u0111\u1ea7u;\r\n    stop\r\n  else ([H\u1ebft h\u1ea1n \/ H\u1ee7y])\r\n    |\u1ee8ng d\u1ee5ng Client|\r\n    :X\u00f3a c\u00e1c token \u0111\u00e3 l\u01b0u;\r\n    :Chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u00e0n h\u00ecnh \u0111\u0103ng nh\u1eadp;\r\n    stop\r\n  endif\r\nendif\r\n@enduml<\/code><\/pre>\n<h3>G\u1ee3i \u00fd Chatbot AI:<\/h3>\n<blockquote>\n<p><em>\u201cT\u1ea1o s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng hi\u1ec3n th\u1ecb x\u00e1c th\u1ef1c token JWT v\u00e0 l\u00e0m m\u1edbi \u00e2m th\u1ea7m. N\u1ebfu m\u00e3 truy c\u1eadp h\u1ee3p l\u1ec7, cung c\u1ea5p t\u1ea3i tr\u1ecdng API. N\u1ebfu h\u1ebft h\u1ea1n (401), th\u1eed l\u00e0m m\u1edbi token \u00e2m th\u1ea7m. N\u1ebfu token l\u00e0m m\u1edbi c\u0169ng h\u1ebft h\u1ea1n, x\u00f3a b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 v\u00e0 chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn m\u00e0n h\u00ecnh \u0111\u0103ng nh\u1eadp.\u201d<\/em><\/p>\n<\/blockquote>\n<\/section>\n<section id=\"prompt-engineering\">\n<h2>Thi\u1ebft k\u1ebf g\u1ee3i \u00fd cho c\u00e1c quy tr\u00ecnh b\u1ea3o m\u1eadt v\u00e0 x\u00e1c th\u1ef1c<\/h2>\n<p>Khi m\u00f4 h\u00ecnh h\u00f3a c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt v\u1edbi m\u1ed9t <a href=\"https:\/\/www.visual-paradigm.com\/features\/ai-uml-activity-diagram-chatbot\/\">c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng AI<\/a>, c\u00e1ch di\u1ec5n \u0111\u1ea1t ch\u00ednh x\u00e1c \u0111\u1ea3m b\u1ea3o c\u00e1c ranh gi\u1edbi b\u1ea3o m\u1eadt ch\u00ednh th\u1ee9c \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng:<\/p>\n<ul>\n<li><strong>\u0110\u1eb7t t\u00ean ch\u00ednh x\u00e1c cho c\u00e1c th\u00e0nh ph\u1ea7n b\u1ea3o m\u1eadt:<\/strong>N\u00eau r\u00f5 c\u00e1c token, m\u00e3 x\u00e1c th\u1ef1c v\u00e0 b\u0103m (v\u00ed d\u1ee5 nh\u01b0 <em>\u201cm\u00e3 truy c\u1eadp JWT\u201d<\/em>, <em>\u201cm\u00e3_th\u1eed_th\u00e1ch\u201d<\/em>, <em>\u201cb\u0103m bcrypt\u201d<\/em>) \u0111\u1ec3 AI \u0111\u00e1nh d\u1ea5u c\u00e1c n\u00fat m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh c\u1ea3 c\u00e1c \u0111\u01b0\u1eddng \u0111i H\u1ea1nh ph\u00fac v\u00e0 Kh\u00f4ng H\u1ea1nh ph\u00fac:<\/strong>X\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng c\u00e1c lu\u1ed3ng th\u1ea5t b\u1ea1i (v\u00ed d\u1ee5 nh\u01b0 <em>\u201cN\u1ebfu MFA th\u1ea5t b\u1ea1i, hi\u1ec3n th\u1ecb l\u1ed7i. N\u1ebfu v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9, tr\u1ea3 v\u1ec1 429 Qu\u00e1 nhi\u1ec1u y\u00eau c\u1ea7u\u201d<\/em>).<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c ranh gi\u1edbi tin c\u1eady:<\/strong>S\u1eed d\u1ee5ng c\u00e1c l\u00e0n \u0111\u01b0\u1eddng b\u01a1i \u0111\u1ec3 ph\u00e2n bi\u1ec7t th\u1ef1c thi ph\u00eda client (tr\u00ecnh duy\u1ec7t ho\u1eb7c \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng kh\u00f4ng \u0111\u00e1ng tin c\u1eady) v\u1edbi th\u1ef1c thi ph\u00eda server (c\u1ed5ng API \u0111\u00e1ng tin c\u1eady\/c\u01a1 s\u1edf d\u1eef li\u1ec7u).<\/li>\n<\/ul>\n<\/section>\n<section id=\"ai-workflow\">\n<h2>K\u1ebft n\u1ed1i vi\u1ec7c sinh t\u1ef1 \u0111\u1ed9ng b\u1eb1ng AI v\u1edbi bi\u1ec3u \u0111\u1ed3 d\u01b0\u1edbi d\u1ea1ng m\u00e3 trong Visual Paradigm<\/h2>\n<p>Thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac b\u1ea3o m\u1eadt \u0111\u00f2i h\u1ecfi s\u1ef1 l\u1eb7p l\u1ea1i nhanh ch\u00f3ng k\u1ebft h\u1ee3p v\u1edbi ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n nghi\u00eam ng\u1eb7t. <strong>Tr\u1ee3 l\u00fd tr\u00f2 chuy\u1ec7n v\u1ebd bi\u1ec3u \u0111\u1ed3 b\u1eb1ng AI<\/strong> trong Visual Paradigm mang \u0111\u1ebfn quy tr\u00ecnh l\u00e0m vi\u1ec7c to\u00e0n di\u1ec7n t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i:<\/p>\n<ul>\n<li><strong>T\u1ea1o bi\u1ec3u \u0111\u1ed3 x\u00e1c th\u1ef1c theo c\u00e1ch tr\u00f2 chuy\u1ec7n:<\/strong>G\u1ee3i \u00fd cho c\u00f4ng c\u1ee5 UML AI v\u1edbi c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt ph\u1ee9c t\u1ea1p, v\u00e0 nh\u1eadn m\u00e3 PlantUML ho\u1eb7c Mermaid h\u1ee3p l\u1ec7 v\u1ec1 m\u1eb7t ng\u1eef ph\u00e1p trong v\u00e0i gi\u00e2y.<\/li>\n<li><strong>Ch\u1ec9nh s\u1eeda b\u1eb1ng VPasCode:<\/strong>Xu\u1ea5t c\u00e1c bi\u1ec3u \u0111\u1ed3 x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c t\u1ea1o ra tr\u1ef1c ti\u1ebfp v\u00e0o <a href=\"https:\/\/www.visual-paradigm.com\/features\/diagram-as-code-tool\/\">VPasCode <\/a>\u0111\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ec9nh s\u1eeda cu\u1ed1i.<\/li>\n<li><strong>C\u00e1c quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng b\u1ea3o m\u1eadt trong OpenDocs:<\/strong>Ch\u00e8n c\u00e1c bi\u1ec3u \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng v\u00e0o OpenDocs \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c b\u1ea3n \u0111\u00e1nh gi\u00e1 ki\u1ebfn tr\u00fac b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n, h\u01b0\u1edbng d\u1eabn \u0111\u01b0a nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0o l\u00e0m vi\u1ec7c, v\u00e0 t\u00e0i li\u1ec7u ki\u1ec3m to\u00e1n SOC 2 \/ ISO 27001.<\/li>\n<li><strong>Chia s\u1ebb phi\u00ean l\u00e0m vi\u1ec7c t\u01b0\u01a1ng t\u00e1c:<\/strong>Chia s\u1ebb c\u00e1c URL phi\u00ean tr\u00f2 chuy\u1ec7n tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ed3ng nghi\u1ec7p v\u00e0 ki\u1ec3m to\u00e1n vi\u00ean b\u1ea3o m\u1eadt \u0111\u1ec3 nh\u1eadn ph\u1ea3n h\u1ed3i h\u1ee3p t\u00e1c nhanh ch\u00f3ng.<\/li>\n<\/ul>\n<p>Tr\u1ea3i nghi\u1ec7m m\u00f4 h\u00ecnh h\u00f3a AI theo c\u00e1ch tr\u00f2 chuy\u1ec7n tr\u00ean web th\u00f4ng qua <strong>Phi\u00ean b\u1ea3n Deluxe c\u1ee7a VP Online<\/strong>ho\u1eb7c b\u00ean trong m\u00f4i tr\u01b0\u1eddng IDE tr\u00ean m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n c\u1ee7a b\u1ea1n v\u1edbi <strong>Phi\u00ean b\u1ea3n Chuy\u00ean nghi\u1ec7p c\u1ee7a VP Desktop<\/strong>.<\/p>\n<\/section>\n<section id=\"faq\">\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>T\u1ea1i sao ch\u1ecdn bi\u1ec3u \u0111\u1ed3 Ho\u1ea1t \u0111\u1ed9ng UML thay v\u00ec bi\u1ec3u \u0111\u1ed3 Chu\u1ed7i cho OAuth 2.0?<\/h3>\n<p>Trong khi s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 xu\u1ea5t s\u1eafc trong vi\u1ec7c th\u1ec3 hi\u1ec7n vi\u1ec7c truy\u1ec1n tin theo th\u1ee9 t\u1ef1 th\u1eddi gian gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng, s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng l\u1ea1i v\u01b0\u1ee3t tr\u1ed9i h\u01a1n trong vi\u1ec7c minh h\u1ecda logic quy\u1ebft \u0111\u1ecbnh, l\u00e0m m\u1edbi token \u0111i\u1ec1u ki\u1ec7n v\u00e0 c\u00e1c t\u00e1c v\u1ee5 \u0111\u1ed3ng th\u1eddi (nh\u01b0 sinh hash PKCE song song).<\/p>\n<h3>T\u00f4i c\u00f3 th\u1ec3 xu\u1ea5t c\u00e1c s\u01a1 \u0111\u1ed3 x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 ch\u1ec9nh s\u1eeda trong VP Desktop kh\u00f4ng?<\/h3>\n<p>C\u00f3. C\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u1ee3 l\u00fd tr\u00f2 chuy\u1ec7n v\u1ebd s\u01a1 \u0111\u1ed3 AI c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf v\u00e0 ch\u1ec9nh s\u1eeda tr\u1ef1c ti\u1ebfp trong Visual Paradigm Desktop ho\u1eb7c Visual Paradigm Online \u0111\u1ec3 tinh ch\u1ec9nh h\u00ecnh \u1ea3nh th\u00eam.<\/p>\n<h3>Tr\u1ee3 l\u00fd tr\u00f2 chuy\u1ec7n AI c\u00f3 \u0111\u1ea3m b\u1ea3o t\u1ef7 l\u1ec7 l\u1ed7i c\u00fa ph\u00e1p th\u1ea5p cho c\u00e1c s\u01a1 \u0111\u1ed3 b\u1ea3o m\u1eadt kh\u00f4ng?<\/h3>\n<p>C\u00f3. Kh\u00e1c v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 tr\u00f2 chuy\u1ec7n AI th\u00f4ng th\u01b0\u1eddng, Visual Paradigm s\u1eed d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh chuy\u00ean bi\u1ec7t, \u0111\u01b0\u1ee3c hu\u1ea5n luy\u1ec7n k\u1ef9 l\u01b0\u1ee1ng, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 t\u1ea1o c\u00fa ph\u00e1p s\u01a1 \u0111\u1ed3 UML v\u00e0 PlantUML h\u1ee3p l\u1ec7 v\u1edbi t\u1ef7 l\u1ec7 l\u1ed7i c\u1ef1c k\u1ef3 th\u1ea5p.<\/p>\n<\/section>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>Thi\u1ebft k\u1ebf logic x\u00e1c th\u1ef1c v\u00e0 \u1ee7y quy\u1ec1n ng\u01b0\u1eddi d\u00f9ng an to\u00e0n \u0111\u00f2i h\u1ecfi s\u1ef1 r\u00f5 r\u00e0ng tuy\u1ec7t \u0111\u1ed1i. T\u1eeb c\u00e1c v\u00f2ng l\u1eb7p x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) \u0111\u1ebfn c\u00e1c c\u1ea5p ph\u00e9p m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE, vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1c giao d\u1ecbch token v\u00e0 c\u00e1c ranh gi\u1edbi b\u1ea3o m\u1eadt gi\u00fap ng\u0103n ng\u1eeba nh\u1eefng l\u1ed7i tri\u1ec3n khai nghi\u00eam tr\u1ecdng. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1c v\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng UML t\u1eebng b\u01b0\u1edbc, m\u00e3 ngu\u1ed3n PlantUML v\u00e0 c\u00e1c l\u1eddi nh\u1eafc AI \u0111\u00e3 s\u1eb5n s\u00e0ng s\u1eed d\u1ee5ng cho c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 h\u1ec7 th\u1ed1ng v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n. M\u1ee5c l\u1ee5c V\u00ed d\u1ee5 1: \u0110\u0103ng nh\u1eadp b\u1eb1ng t\u00ean ng\u01b0\u1eddi d\u00f9ng\/m\u1eadt kh\u1ea9u ti\u00eau chu\u1ea9n k\u00e8m MFA V\u00ed d\u1ee5 2: Lu\u1ed3ng m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE V\u00ed d\u1ee5 3: X\u00e1c th\u1ef1c token JWT v\u00e0 lu\u1ed3ng l\u00e0m m\u1edbi im l\u1eb7ng Thi\u1ebft k\u1ebf l\u1eddi nh\u1eafc cho c\u00e1c quy tr\u00ecnh b\u1ea3o m\u1eadt v\u00e0 x\u00e1c th\u1ef1c K\u1ebft n\u1ed1i sinh th\u00e0nh AI v\u1edbi bi\u1ec3u \u0111\u1ed3 d\u1ea1ng m\u00e3 trong Visual Paradigm C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p V\u00ed d\u1ee5 1: \u0110\u0103ng nh\u1eadp b\u1eb1ng t\u00ean ng\u01b0\u1eddi d\u00f9ng\/m\u1eadt kh\u1ea9u ti\u00eau chu\u1ea9n k\u00e8m MFA S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng n\u00e0y m\u00f4 t\u1ea3 to\u00e0n b\u1ed9 lu\u1ed3ng x\u00e1c th\u1ef1c th\u00f4ng tin \u0111\u0103ng nh\u1eadp, bao g\u1ed3m gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 t\u1ea5n c\u00f4ng brute-force v\u00e0 x\u00e1c th\u1ef1c m\u00e3 token x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA). C\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh: C\u00e1c ph\u00e2n v\u00f9ng b\u1ec3 b\u01a1i (Swimlane):T\u00e1ch bi\u1ec7t giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (\u1ee9ng d\u1ee5ng kh\u00e1ch), backend API v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u\/\u0111\u01a1n v\u1ecb x\u00e1c th\u1ef1c. \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111i\u1ec1u ki\u1ec7n:\u0110\u00e1nh gi\u00e1 t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a m\u1eadt kh\u1ea9u v\u00e0 tr\u1ea1ng th\u00e1i kh\u00f3a t\u00e0i kho\u1ea3n. M\u00e3 PlantUML: Plantuml Ch\u1ec9nh s\u1eeda Plantuml trong VPasCode Plantuml Edit Plantuml in VPasCode @startuml |\u1ee8ng d\u1ee5ng kh\u00e1ch| start :Nh\u1eadp t\u00ean ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1eadt kh\u1ea9u; :Click &#8220;\u0110\u0103ng nh\u1eadp&#8221;; |API X\u00e1c th\u1ef1c| :Ki\u1ec3m tra d\u1eef li\u1ec7u y\u00eau c\u1ea7u; if (V\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9?) then ([C\u00f3]) |\u1ee8ng d\u1ee5ng kh\u00e1ch| :Hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o &#8220;Qu\u00e1 nhi\u1ec1u y\u00eau c\u1ea7u&#8221;; stop else ([Kh\u00f4ng]) |C\u01a1 s\u1edf d\u1eef li\u1ec7u \/ IDP| :L\u1ea5y th\u00f4ng tin t\u00e0i kho\u1ea3n v\u00e0 m\u00e3 b\u0103m m\u1eadt kh\u1ea9u; endif |API X\u00e1c th\u1ef1c| if (M\u1eadt kh\u1ea9u kh\u1edbp?) then ([Kh\u00f4ng]) :T\u0103ng b\u1ed9 \u0111\u1ebfm l\u1ea7n th\u1eed th\u1ea5t b\u1ea1i; |\u1ee8ng d\u1ee5ng kh\u00e1ch| :Hi\u1ec3n th\u1ecb l\u1ed7i &#8220;Th\u00f4ng tin \u0111\u0103ng nh\u1eadp kh\u00f4ng h\u1ee3p l\u1ec7&#8221;; stop else ([C\u00f3]) |API X\u00e1c th\u1ef1c| if (MFA \u0111\u00e3 b\u1eadt?) then ([C\u00f3]) |\u1ee8ng d\u1ee5ng kh\u00e1ch| :Y\u00eau c\u1ea7u nh\u1eadp m\u00e3 MFA 6 ch\u1eef s\u1ed1; :G\u1eedi m\u00e3 MFA; |API X\u00e1c th\u1ef1c| if (M\u00e3 MFA h\u1ee3p l\u1ec7?) then ([C\u00f3]) :T\u1ea1o token phi\u00ean l\u00e0m vi\u1ec7c; else ([Kh\u00f4ng]) |\u1ee8ng d\u1ee5ng kh\u00e1ch| :Hi\u1ec3n th\u1ecb l\u1ed7i &#8220;M\u00e3 MFA kh\u00f4ng h\u1ee3p l\u1ec7&#8221;; stop endif else ([Kh\u00f4ng]) |API X\u00e1c th\u1ef1c| :T\u1ea1o token phi\u00ean l\u00e0m vi\u1ec7c; endif endif |\u1ee8ng d\u1ee5ng kh\u00e1ch| :L\u01b0u JWT an to\u00e0n v\u00e0 chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n; stop @enduml Edit Plantuml in VPasCode Ch\u1ec9nh s\u1eeda Plantuml trong VPasCode L\u1eddi nh\u1eafc chatbot AI: \u201cH\u00e3y t\u1ea1o m\u1ed9t s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng UML cho quy tr\u00ecnh \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng k\u00e8m MFA. S\u1eed d\u1ee5ng c\u00e1c ph\u00e2n v\u00f9ng b\u1ec3 b\u01a1i: \u1ee8ng d\u1ee5ng kh\u00e1ch, API X\u00e1c th\u1ef1c v\u00e0 C\u01a1 s\u1edf d\u1eef li\u1ec7u\/IDP. Ki\u1ec3m tra gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9, x\u00e1c minh m\u00e3 b\u0103m m\u1eadt kh\u1ea9u, v\u00e0 n\u1ebfu MFA \u0111\u01b0\u1ee3c b\u1eadt, y\u00eau c\u1ea7u nh\u1eadp m\u00e3 6 ch\u1eef s\u1ed1 tr\u01b0\u1edbc khi c\u1ea5p token phi\u00ean l\u00e0m vi\u1ec7c.\u201d V\u00ed d\u1ee5 2: Lu\u1ed3ng m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE G\u00f3i c\u1ea5p m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi Ch\u1ee9ng nh\u1eadn kh\u00f3a m\u00e3 trao \u0111\u1ed5i (PKCE) l\u00e0 ti\u00eau chu\u1ea9n ng\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng trang \u0111\u01a1n (SPAs) v\u00e0 \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng. Vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1c th\u1eed th\u00e1ch m\u00e3 v\u00e0 giao d\u1ecbch token \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7 giao th\u1ee9c. C\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh: Sinh song song:Sinh ra code_verifier v\u00e0 m\u00e3 th\u1eed th\u00e1ch m\u00e3 h\u00f3a \u0111\u1ed3ng th\u1eddi tr\u01b0\u1edbc khi kh\u1edfi ch\u1ea1y tr\u00ecnh duy\u1ec7t. X\u00e1c th\u1ef1c ch\u00e9o mi\u1ec1n:\u00c1nh x\u1ea1 c\u00e1c chuy\u1ec3n h\u01b0\u1edbng gi\u1eefa Client, M\u00e1y ch\u1ee7 x\u00e1c th\u1ef1c v\u00e0 M\u00e1y ch\u1ee7 t\u00e0i nguy\u00ean. M\u00e3 PlantUML: @startuml |\u1ee8ng d\u1ee5ng Client (SPA)| start fork :T\u1ea1o m\u00e3 x\u00e1c th\u1ef1c PKCE; fork again :T\u1ea1o m\u00e3 th\u1eed th\u00e1ch PKCE (SHA256); end fork :Chuy\u1ec3n h\u01b0\u1edbng tr\u00ecnh duy\u1ec7t \u0111\u1ebfn M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c v\u1edbi M\u00e3 th\u1eed th\u00e1ch; |M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c| :Y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng \u0111\u0103ng nh\u1eadp v\u00e0 \u0111\u1ed3ng \u00fd; |Ng\u01b0\u1eddi d\u00f9ng| :Ch\u1ea5p thu\u1eadn ph\u1ea1m vi v\u00e0 \u1ee7y quy\u1ec1n; |M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c| :Ph\u00e1t h\u00e0nh m\u00e3 \u1ee7y quy\u1ec1n c\u00f3 th\u1eddi h\u1ea1n ng\u1eafn; :Chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn URI chuy\u1ec3n h\u01b0\u1edbng c\u1ee7a Client; |\u1ee8ng d\u1ee5ng Client (SPA)| :Tr\u00edch xu\u1ea5t m\u00e3 \u1ee7y quy\u1ec1n; :G\u1eedi M\u00e3 + M\u00e3 x\u00e1c th\u1ef1c PKCE \u0111\u1ebfn \u0111i\u1ec3m cu\u1ed1i Token; |M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c| :Ki\u1ec3m tra m\u00e3 x\u00e1c th\u1ef1c v\u1edbi m\u00e3 th\u1eed th\u00e1ch; if (Ki\u1ec3m tra th\u00e0nh c\u00f4ng?) then ([C\u00f3]) :Ph\u00e1t h\u00e0nh M\u00e3 truy c\u1eadp v\u00e0 M\u00e3 l\u00e0m m\u1edbi; |\u1ee8ng d\u1ee5ng Client (SPA)| :L\u01b0u m\u00e3 truy c\u1eadp v\u00e0o b\u1ed9 nh\u1edb; :L\u1ea5y h\u1ed3 s\u01a1 ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7; else ([Th\u1ea5t b\u1ea1i]) |\u1ee8ng d\u1ee5ng Client (SPA)| :Hi\u1ec3n th\u1ecb l\u1ed7i \u1ee7y quy\u1ec1n; endif stop @enduml G\u1ee3i \u00fd Chatbot AI: \u201cT\u1ea1o s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng cho lu\u1ed3ng m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 v\u1edbi PKCE. Hi\u1ec3n th\u1ecb vi\u1ec7c t\u1ea1o song song m\u00e3_verifier v\u00e0 m\u00e3_th\u1eed_th\u00e1ch, chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn M\u00e1y ch\u1ee7 X\u00e1c th\u1ef1c, s\u1ef1 \u0111\u1ed3ng \u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, thu h\u1ed3i m\u00e3 v\u00e0 x\u00e1c minh token.\u201d V\u00ed d\u1ee5 3: X\u00e1c th\u1ef1c Token JWT v\u00e0 lu\u1ed3ng l\u00e0m m\u1edbi \u00e2m th\u1ea7m Qu\u1ea3n l\u00fd x\u00e1c th\u1ef1c API m\u1ed9t c\u00e1ch an to\u00e0n \u0111\u00f2i h\u1ecfi x\u00e1c th\u1ef1c c\u00e1c Token Web JSON (JWT) cho m\u1ed7i y\u00eau c\u1ea7u v\u00e0 t\u1ef1 \u0111\u1ed9ng l\u00e0m m\u1edbi c\u00e1c token \u0111\u00e3 h\u1ebft h\u1ea1n th\u00f4ng qua token l\u00e0m m\u1edbi n\u1ec1n m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. C\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh: V\u00f2ng ph\u1ee5c h\u1ed3i b\u1ea5t \u0111\u1ed3ng b\u1ed9:Y\u00eau c\u1ea7u m\u1ed9t m\u00e3 truy c\u1eadp m\u1edbi khi m\u1ed9t 401 Kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1nph\u1ea3n h\u1ed3i \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. X\u1eed l\u00fd h\u1ebft h\u1ea1n phi\u00ean:X\u00f3a b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 v\u00e0 chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn trang \u0111\u0103ng nh\u1eadp khi ch\u00ednh token l\u00e0m m\u1edbi h\u1ebft h\u1ea1n. M\u00e3 PlantUML: @startuml |\u1ee8ng d\u1ee5ng Client| start :G\u1eedi y\u00eau c\u1ea7u API v\u1edbi Token Bearer; |C\u1ed5ng API| :Ki\u1ec3m tra ti\u00eau \u0111\u1ec1 \u1ee7y quy\u1ec1n; if (Token h\u1ee3p l\u1ec7 v\u00e0 ch\u01b0a<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/user-authentication-oauth2-activity-diagrams\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng lu\u1ed3ng x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 OAuth 2.0<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":6977,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng lu\u1ed3ng X\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 OAuth 2.0 (PlantUML & AI)","_yoast_wpseo_metadesc":"M\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng, x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) v\u00e0 m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 b\u1eb1ng s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng UML. Bao g\u1ed3m m\u00e3 PlantUML v\u00e0 c\u00e1c l\u1eddi nh\u1eafc c\u00f4ng c\u1ee5 UML AI.","_eb_attr":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[25,44,7],"tags":[],"class_list":["post-6976","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai","category-ai-diagramming-chatbot","category-uml"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng lu\u1ed3ng X\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 OAuth 2.0 (PlantUML &amp; AI)<\/title>\n<meta name=\"description\" content=\"M\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng, x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) v\u00e0 m\u00e3 \u1ee7y quy\u1ec1n OAuth 2.0 b\u1eb1ng s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng UML. 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