{"id":89,"date":"2026-04-06T11:48:53","date_gmt":"2026-04-06T11:48:53","guid":{"rendered":"https:\/\/www.go-notes.com\/vn\/uml-class-diagrams-security-protocol-design\/"},"modified":"2026-04-06T11:48:53","modified_gmt":"2026-04-06T11:48:53","slug":"uml-class-diagrams-security-protocol-design","status":"publish","type":"post","link":"https:\/\/www.go-notes.com\/vn\/uml-class-diagrams-security-protocol-design\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 l\u1edbp UML cho thi\u1ebft k\u1ebf giao th\u1ee9c b\u1ea3o m\u1eadt"},"content":{"rendered":"

Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng an to\u00e0n \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n ch\u1ec9 vi\u1ec7c vi\u1ebft m\u00e3 ngu\u1ed3n m\u1ea1nh m\u1ebd; n\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t t\u1ea7m nh\u00ecn ki\u1ebfn tr\u00fac r\u00f5 r\u00e0ng. Khi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 k\u1ef9 s\u01b0 b\u1ea3o m\u1eadt h\u1ee3p t\u00e1c, h\u1ecd th\u01b0\u1eddng g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i c\u00e1c y\u00eau c\u1ea7u b\u1ea3o m\u1eadt tr\u1eebu t\u01b0\u1ee3ng th\u00e0nh c\u00e1c c\u1ea5u tr\u00fac h\u1ec7 th\u1ed1ng c\u1ee5 th\u1ec3. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac s\u01a1 \u0111\u1ed3 l\u1edbp UML tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 thi\u1ebfu. Ch\u00fang cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef tr\u1ef1c quan chu\u1ea9n h\u00f3a \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1c th\u1ef1c th\u1ec3, m\u1ed1i quan h\u1ec7 v\u00e0 h\u00e0nh vi tr\u01b0\u1edbc khi tri\u1ec3n khai b\u1eaft \u0111\u1ea7u. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp UML cho thi\u1ebft k\u1ebf giao th\u1ee9c b\u1ea3o m\u1eadt, c\u00e1c \u0111\u1ed9i nh\u00f3m c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm c\u00e1c l\u1ed7 h\u1ed5ng ti\u1ec1m t\u00e0ng, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c v\u00e0 m\u00e3 h\u00f3a l\u00e0 h\u1ee3p l\u00fd v\u1ec1 m\u1eb7t logic.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh l\u1edbp chi ti\u1ebft ph\u1ea3n \u00e1nh c\u00e1c r\u00e0ng bu\u1ed9c b\u1ea3o m\u1eadt. Ch\u00fang ta s\u1ebd xem x\u00e9t c\u00e1ch bi\u1ec3u di\u1ec5n d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, qu\u1ea3n l\u00fd ki\u1ec3m so\u00e1t truy c\u1eadp v\u00e0 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c thao t\u00e1c m\u00e3 h\u00f3a m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 chi ti\u1ebft tri\u1ec3n khai qu\u00e1 s\u1edbm. M\u1ee5c ti\u00eau l\u00e0 t\u1ea1o ra m\u1ed9t b\u1ea3n v\u1ebd ph\u00e1c th\u1ea3o v\u1eeba \u0111\u00f3ng vai tr\u00f2 l\u00e0 t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf, v\u1eeba l\u00e0 d\u1ea5u v\u1ebft ki\u1ec3m to\u00e1n b\u1ea3o m\u1eadt.<\/p>\n

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\"Chalkboard-style<\/figure>\n<\/div>\n

\ud83e\udde9 T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng UML cho ki\u1ebfn tr\u00fac b\u1ea3o m\u1eadt?<\/h2>\n

B\u1ea3o m\u1eadt th\u01b0\u1eddng \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t t\u00ednh n\u0103ng b\u1ed5 sung thay v\u00ec y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng. Tuy nhi\u00ean, t\u00edch h\u1ee3p b\u1ea3o m\u1eadt v\u00e0o c\u1ea5u tr\u00fac l\u1edbp \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00ednh b\u1ea3o v\u1ec7 l\u00e0 b\u1ea3n ch\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 UML mang l\u1ea1i nhi\u1ec1u l\u1ee3i th\u1ebf r\u00f5 r\u1ec7t trong b\u1ed1i c\u1ea3nh n\u00e0y:<\/p>\n

    \n
  • Tr\u1ef1c quan h\u00f3a c\u00e1c ranh gi\u1edbi tin c\u1eady:<\/strong>C\u00e1c s\u01a1 \u0111\u1ed3 gi\u00fap ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n n\u1ed9i b\u1ed9 \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00e1c \u0111\u1ea7u v\u00e0o b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u00e1ng tin c\u1eady. S\u1ef1 ph\u00e2n t\u00e1ch n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh n\u01a1i m\u00e0 vi\u1ec7c x\u00e1c th\u1ef1c ph\u1ea3i di\u1ec5n ra.<\/li>\n
  • L\u00e0m r\u00f5 lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong>C\u00e1c m\u1ed1i quan h\u1ec7 l\u1edbp cho th\u1ea5y c\u00e1ch th\u00f4ng tin di chuy\u1ec3n gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. Vi\u1ec7c theo d\u00f5i lu\u1ed3ng n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m c\u00f3 th\u1ec3 b\u1ecb ti\u1ebft l\u1ed9 ho\u1eb7c x\u1eed l\u00fd sai.<\/li>\n
  • X\u00e1c \u0111\u1ecbnh giao di\u1ec7n:<\/strong>C\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c giao di\u1ec7n nghi\u00eam ng\u1eb7t. UML \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng c\u00e1c h\u1ee3p \u0111\u1ed3ng n\u00e0y, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 c\u00f3 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp.<\/li>\n
  • T\u00e0i li\u1ec7u:<\/strong>M\u1ed9t s\u01a1 \u0111\u1ed3 t\u0129nh \u0111\u00f3ng vai tr\u00f2 l\u00e0 b\u1ea3n ghi v\u0129nh vi\u1ec5n v\u1ec1 thi\u1ebft k\u1ebf b\u1ea3o m\u1eadt. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng cho c\u00e1c cu\u1ed9c ki\u1ec3m to\u00e1n tu\u00e2n th\u1ee7 v\u00e0 b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai.<\/li>\n<\/ul>\n

    \ud83d\udd11 C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt<\/h2>\n

    Khi m\u00f4 h\u00ecnh h\u00f3a c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt, c\u00e1c l\u1edbp ti\u00eau chu\u1ea9n c\u1ea7n c\u00f3 c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee5 th\u1ec3 \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c thao t\u00e1c nh\u1ea1y c\u1ea3m. M\u1ed9t l\u1edbp b\u1ea3o m\u1eadt \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 \u0111\u1ea1i di\u1ec7n cho ng\u01b0\u1eddi d\u00f9ng, phi\u00ean l\u00e0m vi\u1ec7c ho\u1eb7c kh\u00f3a m\u00e3 h\u00f3a. M\u1ed7i th\u00e0nh ph\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a ch\u00ednh x\u00e1c \u0111\u1ec3 tr\u00e1nh hi\u1ec3u l\u1ea7m.<\/p>\n

    Thu\u1ed9c t\u00ednh v\u00e0 \u00fd ngh\u0129a b\u1ea3o m\u1eadt<\/h3>\n

    C\u00e1c thu\u1ed9c t\u00ednh trong s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ea1i di\u1ec7n cho tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng. Trong b\u1ed1i c\u1ea3nh b\u1ea3o m\u1eadt, ki\u1ec3u v\u00e0 m\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb c\u1ee7a m\u1ed9t thu\u1ed9c t\u00ednh x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 r\u1ee7i ro c\u1ee7a n\u00f3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng minh h\u1ecda c\u00e1ch c\u00e1c thu\u1ed9c t\u00ednh ph\u1ed5 bi\u1ebfn t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m b\u1ea3o m\u1eadt.<\/p>\n\n\n\n\n\n\n\n\n\n
    T\u00ean thu\u1ed9c t\u00ednh<\/th>\nLo\u1ea1i UML<\/th>\nH\u1ec7 qu\u1ea3 b\u1ea3o m\u1eadt<\/th>\n<\/tr>\n<\/thead>\n
    userPassword<\/code><\/td>\nChu\u1ed7i<\/code><\/td>\nPh\u1ea3i \u0111\u01b0\u1ee3c b\u0103m; kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c l\u01b0u d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n t\u00fay.<\/td>\n<\/tr>\n
    sessionToken<\/code><\/td>\nUUID<\/code><\/td>\nY\u00eau c\u1ea7u th\u1eddi gian h\u1ebft h\u1ea1n v\u00e0 l\u01b0u tr\u1eef an to\u00e0n.<\/td>\n<\/tr>\n
    encryptionKey<\/code><\/td>\nM\u1ea3ng byte<\/code><\/td>\nPh\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd kh\u00f3a.<\/td>\n<\/tr>\n
    role<\/code><\/td>\nEnum<\/code><\/td>\nKi\u1ec3m so\u00e1t c\u00e1c m\u1ee9c truy c\u1eadp v\u00e0 c\u00e1c quy t\u1eafc \u1ee7y quy\u1ec1n.<\/td>\n<\/tr>\n
    lastLoginTime<\/code><\/td>\nDateTime<\/code><\/td>\nH\u1eefu \u00edch cho vi\u1ec7c ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng v\u00e0 c\u00e1c ch\u00ednh s\u00e1ch kh\u00f3a t\u00e0i kho\u1ea3n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    L\u01b0u \u00fd r\u1eb1ng lo\u1ea1i d\u1eef li\u1ec7u quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec t\u00ean. Vi\u1ec7c l\u01b0u tr\u1eef m\u1ed9t DateTime<\/code> cho c\u00e1c l\u1ea7n th\u1eed \u0111\u0103ng nh\u1eadp cho ph\u00e9p l\u1eadp lu\u1eadn v\u1ec1 b\u1ea3o v\u1ec7 ch\u1ed1ng t\u1ea5n c\u00f4ng brute-force, trong khi m\u1ed9t ByteArray<\/code> cho kh\u00f3a ng\u1ee5 \u00fd c\u00e1c y\u00eau c\u1ea7u x\u1eed l\u00fd nh\u1ecb ph\u00e2n.<\/p>\n

    \ud83d\udd10 M\u00f4 h\u00ecnh h\u00f3a X\u00e1c th\u1ef1c v\u00e0 \u1ee6y quy\u1ec1n<\/h2>\n

    X\u00e1c th\u1ef1c x\u00e1c minh danh t\u00ednh, trong khi \u1ee7y quy\u1ec1n x\u00e1c \u0111\u1ecbnh danh t\u00ednh \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m g\u00ec. C\u00e1c quy tr\u00ecnh n\u00e0y n\u00ean \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a d\u01b0\u1edbi d\u1ea1ng c\u00e1c l\u1edbp ri\u00eang bi\u1ec7t \u0111\u1ec3 duy tr\u00ec s\u1ef1 t\u00e1ch bi\u1ec7t tr\u00e1ch nhi\u1ec7m. S\u1ef1 t\u00e1ch bi\u1ec7t n\u00e0y ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i logic n\u01a1i ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 x\u00e1c th\u1ef1c c\u00f3 th\u1ec3 v\u00f4 t\u00ecnh nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1eb7c quy\u1ec1n n\u00e2ng cao.<\/p>\n

    L\u1edbp X\u00e1c th\u1ef1c<\/h3>\n

    L\u1edbp X\u00e1c th\u1ef1c<\/code> l\u1edbp th\u01b0\u1eddng x\u1eed l\u00fd x\u00e1c minh th\u00f4ng tin x\u00e1c th\u1ef1c. N\u00f3 kh\u00f4ng n\u00ean l\u01b0u tr\u1eef th\u00f4ng tin x\u00e1c th\u1ef1c tr\u1ef1c ti\u1ebfp m\u00e0 thay v\u00e0o \u0111\u00f3 t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u1ed9t Kho l\u01b0u tr\u1eef Th\u00f4ng tin x\u00e1c th\u1ef1c<\/code>. Thi\u1ebft k\u1ebf n\u00e0y \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t.<\/p>\n

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    • Ph\u01b0\u01a1ng th\u1ee9c:<\/strong> validateCredentials()<\/code>, issueToken()<\/code>, revokeSession()<\/code>.<\/li>\n
    • Ph\u1ee5 thu\u1ed9c:<\/strong> Kho l\u01b0u tr\u1eef Th\u00f4ng tin x\u00e1c th\u1ef1c<\/code>, Qu\u1ea3n l\u00fd Token<\/code>.<\/li>\n
    • R\u00e0ng bu\u1ed9c:<\/strong>C\u00e1c tham s\u1ed1 \u0111\u1ea7u v\u00e0o ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c v\u1ec1 \u0111\u1ecbnh d\u1ea1ng v\u00e0 \u0111\u1ed9 d\u00e0i \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3.<\/li>\n<\/ul>\n

      L\u1edbp \u1ee7y quy\u1ec1n<\/h3>\n

      L\u1edbp \u1ee6y quy\u1ec1n<\/code>l\u1edbp \u0111\u00e1nh gi\u00e1 c\u00e1c ch\u00ednh s\u00e1ch d\u1ef1a tr\u00ean vai tr\u00f2 ng\u01b0\u1eddi d\u00f9ng. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u1ed9t Danh s\u00e1ch ki\u1ec3m so\u00e1t truy c\u1eadp<\/code> ho\u1eb7c m\u1ed9t \u0110\u1ed9ng c\u01a1 ch\u00ednh s\u00e1ch<\/code>.<\/p>\n

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      • Ph\u01b0\u01a1ng th\u1ee9c:<\/strong> checkPermission()<\/code>, grantRole()<\/code>, auditAccess()<\/code>.<\/li>\n
      • Ph\u1ee5 thu\u1ed9c:<\/strong> Ng\u01b0\u1eddi d\u00f9ng<\/code>, Ngu\u1ed3n l\u1ef1c<\/code>, Quy t\u1eafc ch\u00ednh s\u00e1ch<\/code>.<\/li>\n
      • R\u00e0ng bu\u1ed9c:<\/strong>C\u00e1c quy\u1ebft \u0111\u1ecbnh ph\u1ea3i \u0111\u01b0\u1ee3c ghi l\u1ea1i. \u0110i\u1ec1u n\u00e0y h\u1ed7 tr\u1ee3 t\u00ednh kh\u00f4ng th\u1ec3 ph\u1ee7 nh\u1eadn.<\/li>\n<\/ul>\n

        \ud83d\udd12 X\u1eed l\u00fd c\u00e1c th\u00e0nh ph\u1ea7n m\u1eadt m\u00e3<\/h2>\n

        M\u1eadt m\u00e3 h\u1ecdc l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c ph\u1ee9c t\u1ea1p. Vi\u1ec7c qu\u1ea3n l\u00fd sai kh\u00f3a ho\u1eb7c c\u00e1c vect\u01a1 kh\u1edfi t\u1ea1o c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. C\u00e1c s\u01a1 \u0111\u1ed3 l\u1edbp UML cho ph\u00e9p b\u1ea1n tr\u1ef1c quan h\u00f3a v\u00f2ng \u0111\u1eddi c\u1ee7a d\u1eef li\u1ec7u m\u1eadt m\u00e3. B\u1ea1n c\u00f3 th\u1ec3 m\u00f4 h\u00ecnh h\u00f3a r\u00f5 r\u00e0ng m\u1ed1i quan h\u1ec7 gi\u1eefa m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng M\u00e3 h\u00f3a<\/code> v\u00e0 m\u1ed9t Kho l\u01b0u tr\u1eef kh\u00f3a<\/code>.<\/p>\n

        L\u1edbp qu\u1ea3n l\u00fd kh\u00f3a<\/h3>\n

        M\u1ed9t Qu\u1ea3n l\u00fd kh\u00f3a<\/code>l\u1edbp ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u0111i\u1ec3m trung t\u00e2m \u0111\u1ec3 truy xu\u1ea5t v\u00e0 xoay v\u00f2ng kh\u00f3a. N\u00f3 kh\u00f4ng n\u00ean ti\u1ebft l\u1ed9 d\u1eef li\u1ec7u kh\u00f3a th\u00f4. Thay v\u00e0o \u0111\u00f3, n\u00f3 cung c\u1ea5p c\u00e1c ph\u01b0\u01a1ng th\u1ee9c th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c s\u1eed d\u1ee5ng kh\u00f3a b\u00ean trong.<\/p>\n

          \n
        • Bao \u0111\u00f3ng:<\/strong>Kh\u00f3a n\u00ean l\u00e0 m\u1ed9t thu\u1ed9c t\u00ednh ri\u00eang t\u01b0.<\/li>\n
        • \u0110\u1ed9 hi\u1ec3n th\u1ecb:<\/strong>C\u00e1c ph\u01b0\u01a1ng th\u1ee9c nh\u01b0 encryptData()<\/code>n\u00ean l\u00e0 c\u00f4ng khai, trong khi getKeyMaterial()<\/code>n\u00ean l\u00e0 ri\u00eang t\u01b0 ho\u1eb7c kh\u00f4ng t\u1ed3n t\u1ea1i.<\/li>\n
        • Chu k\u1ef3 s\u1ed1ng:<\/strong>Bao g\u1ed3m c\u00e1c thu\u1ed9c t\u00ednh nh\u01b0 expirationDate<\/code>\u0111\u1ec3 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch xoay v\u00f2ng kh\u00f3a.<\/li>\n<\/ul>\n

          Vector kh\u1edfi t\u1ea1o v\u00e0 nonce<\/h3>\n

          Nhi\u1ec1u giao th\u1ee9c y\u00eau c\u1ea7u c\u00e1c gi\u00e1 tr\u1ecb duy nh\u1ea5t cho m\u1ed7i thao t\u00e1c m\u00e3 h\u00f3a. M\u00f4 h\u00ecnh h\u00f3a ch\u00fang nh\u01b0 c\u00e1c thu\u1ed9c t\u00ednh gi\u00fap \u0111\u1ea3m b\u1ea3o ch\u00fang \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n\n\n\n\n
          L\u1edbp<\/th>\nThu\u1ed9c t\u00ednh<\/th>\nR\u00e0ng bu\u1ed9c<\/th>\n<\/tr>\n<\/thead>\n
          Phi\u00ean<\/code><\/td>\nnonce<\/code><\/td>\nPh\u1ea3i duy nh\u1ea5t cho m\u1ed7i phi\u00ean.<\/td>\n<\/tr>\n
          Giao d\u1ecbch<\/code><\/td>\niv<\/code><\/td>\nPh\u1ea3i ng\u1eabu nhi\u00ean v\u00e0 kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c.<\/td>\n<\/tr>\n
          B\u1ea3n ghi nh\u1eadt k\u00fd<\/code><\/td>\nm\u1ed1c th\u1eddi gian<\/code><\/td>\nPh\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a v\u1edbi th\u1eddi gian m\u00e1y ch\u1ee7.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          B\u1eb1ng c\u00e1ch li\u1ec7t k\u00ea r\u00f5 r\u00e0ng c\u00e1c thu\u1ed9c t\u00ednh n\u00e0y, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n s\u1ebd \u0111\u01b0\u1ee3c nh\u1eafc nh\u1edf ph\u1ea3i tri\u1ec3n khai logic c\u1ea7n thi\u1ebft. Vi\u1ec7c b\u1ecf qua ch\u00fang trong s\u01a1 \u0111\u1ed3 th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7i b\u1ea3o m\u1eadt trong m\u00e3 ngu\u1ed3n.<\/p>\n

          \ud83d\udee1\ufe0f T\u00ednh hi\u1ec3n th\u1ecb v\u00e0 \u0111\u00f3ng g\u00f3i<\/h2>\n

          C\u00e1c b\u1ed9 ch\u1ecdn t\u00ednh hi\u1ec3n th\u1ecb trong UML (public, private, protected) kh\u00f4ng ch\u1ec9 li\u00ean quan \u0111\u1ebfn t\u1ed5 ch\u1ee9c m\u00e3 ngu\u1ed3n; ch\u00fang l\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t b\u1ea3o m\u1eadt. Ch\u00fang x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi ni\u1ec1m tin b\u00ean trong h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n\n\n\n\n\n
          B\u1ed9 ch\u1ecdn<\/th>\nK\u00fd hi\u1ec7u UML<\/th>\nS\u1eed d\u1ee5ng b\u1ea3o m\u1eadt<\/th>\n<\/tr>\n<\/thead>\n
          C\u00f4ng khai<\/td>\n+<\/code><\/td>\nD\u00e0nh cho c\u00e1c giao di\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c g\u1ecdi b\u1edfi c\u00e1c h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i. S\u1eed d\u1ee5ng c\u1ea9n tr\u1ecdng.<\/td>\n<\/tr>\n
          Ri\u00eang t\u01b0<\/td>\n-<\/code><\/td>\nD\u00e0nh cho d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m nh\u01b0 kh\u00f3a, m\u00e3 th\u00f4ng b\u00e1o ho\u1eb7c tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9.<\/td>\n<\/tr>\n
          B\u1ea3o v\u1ec7<\/td>\n#<\/code><\/td>\nD\u00e0nh cho d\u1eef li\u1ec7u ch\u1ec9 c\u00f3 th\u1ec3 truy c\u1eadp b\u1edfi c\u00e1c l\u1edbp con. H\u1eefu \u00edch trong c\u00e1c c\u1ea5u tr\u00fac k\u1ebf th\u1eeba.<\/td>\n<\/tr>\n
          G\u00f3i<\/td>\n~<\/code><\/td>\nD\u00e0nh cho d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia s\u1ebb trong m\u1ed9t m\u00f4-\u0111un ho\u1eb7c kh\u00f4ng gian t\u00ean c\u1ee5 th\u1ec3.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Khi thi\u1ebft k\u1ebf c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt, m\u1eb7c \u0111\u1ecbnh h\u00e3y s\u1eed d\u1ee5ng t\u00ednh hi\u1ec3n th\u1ecb ri\u00eang t\u01b0 cho t\u1ea5t c\u1ea3 tr\u1ea1ng th\u00e1i. Ch\u1ec9 c\u00f4ng khai ch\u1ee9c n\u0103ng th\u00f4ng qua c\u00e1c ph\u01b0\u01a1ng th\u1ee9c \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng. Nguy\u00ean t\u1eafc n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u1ea9n th\u00f4ng tin, gi\u00fap gi\u1ea3m di\u1ec7n t\u00edch t\u1ea5n c\u00f4ng.<\/p>\n

          \ud83d\udd17 C\u00e1c m\u1ed1i quan h\u1ec7 v\u00e0 t\u01b0\u01a1ng t\u00e1c<\/h2>\n

          C\u00e1c l\u1edbp kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch c\u00f4 l\u1eadp. C\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang x\u00e1c \u0111\u1ecbnh c\u00e1ch c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c th\u1ef1c thi tr\u00ean to\u00e0n h\u1ec7 th\u1ed1ng. Hi\u1ec3u r\u00f5 nh\u1eefng k\u1ebft n\u1ed1i n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n.<\/p>\n

          Th\u00e0nh ph\u1ea7n h\u00f3a so v\u1edbi K\u1ebf th\u1eeba<\/h3>\n

          Th\u00e0nh ph\u1ea7n h\u00f3a ng\u1ee5 \u00fd quy\u1ec1n s\u1edf h\u1eefu m\u1ea1nh m\u1ebd. N\u1ebfu \u0111\u1ed1i t\u01b0\u1ee3ng cha b\u1ecb h\u1ee7y, \u0111\u1ed1i t\u01b0\u1ee3ng con c\u0169ng s\u1ebd kh\u00f4ng c\u00f2n t\u1ed3n t\u1ea1i. \u0110i\u1ec1u n\u00e0y l\u00fd t\u01b0\u1edfng cho c\u00e1c b\u1ed1i c\u1ea3nh b\u1ea3o m\u1eadt.<\/p>\n

            \n
          • Th\u00e0nh ph\u1ea7n h\u00f3a:<\/strong> S\u1eed d\u1ee5ng khi m\u1ed9t Phi\u00ean<\/code> s\u1edf h\u1eefu m\u1ed9t Ch\u1ee9ng th\u1ef1c<\/code>. N\u1ebfu phi\u00ean k\u1ebft th\u00fac, token s\u1ebd kh\u00f4ng h\u1ee3p l\u1ec7.<\/li>\n
          • K\u1ebf th\u1eeba:<\/strong>S\u1eed d\u1ee5ng khi \u0111\u1ecbnh ngh\u0129a c\u00e1c h\u00e0nh vi b\u1ea3o m\u1eadt chung. V\u00ed d\u1ee5, m\u1ed9t K\u1ebft n\u1ed1iB\u1ea3o m\u1eadt<\/code>c\u00f3 th\u1ec3 k\u1ebf th\u1eeba t\u1eeb K\u1ebft n\u1ed1iM\u1ea1ng<\/code>, th\u00eam kh\u1ea3 n\u0103ng m\u00e3 h\u00f3a.<\/li>\n<\/ul>\n

            Li\u00ean k\u1ebft v\u00e0 Ph\u1ee5 thu\u1ed9c<\/h3>\n

            Li\u00ean k\u1ebft cho th\u1ea5y m\u1ed9t l\u1edbp s\u1eed d\u1ee5ng l\u1edbp kh\u00e1c. Ph\u1ee5 thu\u1ed9c l\u00e0 m\u1ed1i quan h\u1ec7 y\u1ebfu h\u01a1n, cho th\u1ea5y vi\u1ec7c s\u1eed d\u1ee5ng t\u1ea1m th\u1eddi.<\/p>\n

              \n
            • Ph\u1ee5 thu\u1ed9c:<\/strong> M\u1ed9t B\u1ed9GhiNh\u1eadtK\u00fd<\/code> ph\u1ee5 thu\u1ed9c v\u00e0o l\u1edbp S\u1ef1Ki\u1ec7nB\u1ea3oM\u1eadt<\/code> l\u1edbp. N\u1ebfu b\u1ed9 ghi nh\u1eadt k\u00fd b\u1ecb x\u00f3a, logic s\u1ef1 ki\u1ec7n v\u1eabn \u0111\u01b0\u1ee3c duy tr\u00ec.<\/li>\n
            • Li\u00ean k\u1ebft:<\/strong> M\u1ed9t Ng\u01b0\u1eddiD\u00f9ng<\/code> c\u00f3 li\u00ean k\u1ebft v\u1edbi VaiTr\u00f2<\/code>. M\u1ed1i quan h\u1ec7 n\u00e0y t\u1ed3n t\u1ea1i l\u00e2u d\u00e0i v\u00e0 x\u00e1c \u0111\u1ecbnh quy\u1ec1n truy c\u1eadp.<\/li>\n<\/ul>\n

              \ud83c\udff7\ufe0f C\u00e1c ki\u1ec3u d\u00e1ng v\u00e0 r\u00e0ng bu\u1ed9c<\/h2>\n

              C\u00e1c ph\u1ea7n t\u1eed UML ti\u00eau chu\u1ea9n mang t\u00ednh chung. \u0110\u1ec3 l\u00e0m ch\u00fang c\u1ee5 th\u1ec3 h\u00f3a cho b\u1ea3o m\u1eadt, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c ki\u1ec3u d\u00e1ng v\u00e0 r\u00e0ng bu\u1ed9c. Nh\u1eefng ch\u00fa th\u00edch n\u00e0y th\u00eam \u00fd ngh\u0129a ng\u1eef ngh\u0129a m\u00e0 kh\u00f4ng l\u00e0m r\u1ed1i s\u01a1 \u0111\u1ed3.<\/p>\n

              S\u1eed d\u1ee5ng ki\u1ec3u d\u00e1ng<\/h3>\n

              C\u00e1c ki\u1ec3u d\u00e1ng l\u00e0 c\u00e1c t\u1eeb kh\u00f3a \u0111\u01b0\u1ee3c \u0111\u00f3ng trong d\u1ea5u guillemets (<< >>). Ch\u00fang ph\u00e2n lo\u1ea1i c\u00e1c l\u1edbp ho\u1eb7c thu\u1ed9c t\u00ednh.<\/p>\n

                \n
              • <<b\u1ea3om\u1eadt>><\/code>: \u0110\u00e1nh d\u1ea5u m\u1ed9t l\u1edbp x\u1eed l\u00fd c\u00e1c thao t\u00e1c nh\u1ea1y c\u1ea3m.<\/li>\n
              • <<m\u00e3h\u00f3a>><\/code>: Ch\u1ec9 ra m\u1ed9t thu\u1ed9c t\u00ednh ch\u1ee9a d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a.<\/li>\n
              • <<ki\u1ec3mtra>><\/code>: \u0110\u00e1nh d\u1ea5u m\u1ed9t thu\u1ed9c t\u00ednh ph\u1ea3i \u0111\u01b0\u1ee3c ghi l\u1ea1i \u0111\u1ec3 tu\u00e2n th\u1ee7.<\/li>\n
              • <<kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i>><\/code>: Ch\u1ec9 ra m\u1ed9t gi\u00e1 tr\u1ecb kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i sau khi t\u1ea1o.<\/li>\n<\/ul>\n

                S\u1eed d\u1ee5ng c\u00e1c r\u00e0ng bu\u1ed9c<\/h3>\n

                C\u00e1c r\u00e0ng bu\u1ed9c \u0111\u01b0\u1ee3c vi\u1ebft trong d\u1ea5u ngo\u1eb7c nh\u1ecdn ({ }). Ch\u00fang x\u00e1c \u0111\u1ecbnh c\u00e1c quy t\u1eafc ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/p>\n

                  \n
                • {pre: password.length >= 12<\/code>}: \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ph\u1ee9c t\u1ea1p t\u1ed1i thi\u1ec3u.<\/li>\n
                • {post: token.isValid == true<\/code>}: \u0110\u1ea3m b\u1ea3o token h\u1ee3p l\u1ec7 ngay khi \u0111\u01b0\u1ee3c t\u1ea1o.<\/li>\n
                • {constraint: session.timeout < 3600<\/code>}: Gi\u1edbi h\u1ea1n th\u1eddi l\u01b0\u1ee3ng phi\u00ean.<\/li>\n<\/ul>\n

                  C\u00e1c r\u00e0ng bu\u1ed9c n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng gi\u1eefa nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n. Ch\u00fang \u0111\u00f3ng vai tr\u00f2 nh\u01b0 danh s\u00e1ch ki\u1ec3m tra trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra m\u00e3 ngu\u1ed3n.<\/p>\n

                  \u26a0\ufe0f Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn khi m\u00f4 h\u00ecnh h\u00f3a<\/h2>\n

                  Ngay c\u1ea3 c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 c\u00f3 kinh nghi\u1ec7m c\u0169ng m\u1eafc sai l\u1ea7m khi m\u00f4 h\u00ecnh h\u00f3a b\u1ea3o m\u1eadt. Nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng sai l\u1ea7m n\u00e0y gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c ch\u00fang.<\/p>\n

                    \n
                  • R\u00f2 r\u1ec9 b\u00ed m\u1eadt:<\/strong> Kh\u00f4ng bao gi\u1edd \u0111\u1eb7t c\u00e1c gi\u00e1 tr\u1ecb kh\u00f3a th\u1ef1c t\u1ebf hay m\u1eadt kh\u1ea9u v\u00e0o s\u01a1 \u0111\u1ed3. S\u1eed d\u1ee5ng c\u00e1c ch\u1ed7 tr\u1ed1ng chung nh\u01b0KeyMaterial<\/code>.<\/li>\n
                  • Qu\u00e1 m\u1ee9c tr\u1eebu t\u01b0\u1ee3ng:<\/strong> Kh\u00f4ng t\u1ea1o c\u00e1c l\u1edbp qu\u00e1 chung chung. M\u1ed9t l\u1edbpData<\/code> l\u00e0 qu\u00e1 m\u01a1 h\u1ed3. S\u1eed d\u1ee5ngUserData<\/code> ho\u1eb7cTransactionData<\/code> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u b\u1ea3o m\u1eadt c\u1ee5 th\u1ec3.<\/li>\n
                  • B\u1ecf qua tr\u1ea1ng th\u00e1i:<\/strong> B\u1ea3o m\u1eadt th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o tr\u1ea1ng th\u00e1i. M\u1ed9t l\u1edbp \u0111\u1ea1i di\u1ec7n cho thanh to\u00e1n ph\u1ea3i theo d\u00f5i tr\u1ea1ng th\u00e1i c\u1ee7a n\u00f3 (\u0111ang ch\u1edd, ho\u00e0n t\u1ea5t, th\u1ea5t b\u1ea1i) \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c chi ti\u00eau k\u00e9p ho\u1eb7c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eb7p l\u1ea1i.<\/li>\n
                  • Thi\u1ebfu x\u1eed l\u00fd l\u1ed7i:<\/strong>C\u00e1c s\u01a1 \u0111\u1ed3 th\u01b0\u1eddng th\u1ec3 hi\u1ec7n c\u00e1c \u0111\u01b0\u1eddng \u0111i thu\u1eadn l\u1ee3i. H\u00e3y bao g\u1ed3m c\u00e1c l\u1edbp x\u1eed l\u00fd l\u1ed7i, ch\u1eb3ng h\u1ea1n nh\u01b0SecurityException<\/code> ho\u1eb7c AccessDenied<\/code>, \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u00e1ch h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c l\u1ed7i.<\/li>\n
                  • S\u1ef1 m\u00f9 qu\u00e1ng trong ph\u00e2n t\u00edch t\u0129nh:<\/strong> \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c ph\u01b0\u01a1ng th\u1ee9c t\u0129nh kh\u00f4ng v\u00f4 t\u00ecnh truy c\u1eadp c\u00e1c bi\u1ebfn th\u1ec3 hi\u1ec7n ch\u1ee9a d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m. \u0110\u00e1nh d\u1ea5u c\u00e1c l\u1edbp t\u0129nh l\u00e0 <<singleton>><\/code> n\u1ebfu ch\u00fang l\u01b0u tr\u1eef tr\u1ea1ng th\u00e1i to\u00e0n c\u1ee5c.<\/li>\n<\/ul>\n

                    \ud83d\udccb C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho t\u00e0i li\u1ec7u giao th\u1ee9c<\/h2>\n

                    M\u1ed9t s\u01a1 \u0111\u1ed3 ch\u1ec9 h\u1eefu \u00edch n\u1ebfu n\u00f3 \u0111\u01b0\u1ee3c duy tr\u00ec v\u00e0 \u0111\u01b0\u1ee3c hi\u1ec3u r\u00f5. Tu\u00e2n theo c\u00e1c th\u1ef1c h\u00e0nh n\u00e0y \u0111\u1ec3 gi\u1eef cho m\u00f4 h\u00ecnh b\u1ea3o m\u1eadt c\u1ee7a b\u1ea1n hi\u1ec7u qu\u1ea3.<\/p>\n

                      \n
                    • Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n:<\/strong>Xem s\u01a1 \u0111\u1ed3 nh\u01b0 m\u00e3 ngu\u1ed3n. L\u01b0u tr\u1eef ch\u00fang trong h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n \u0111\u1ec3 theo d\u00f5i c\u00e1c thay \u0111\u1ed5i theo th\u1eddi gian.<\/li>\n
                    • \u0110\u00e1nh gi\u00e1 \u0111\u1ecbnh k\u1ef3:<\/strong>Bao g\u1ed3m c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 b\u1ea3o m\u1eadt trong c\u00e1c chu k\u1ef3 ki\u1ec3m tra m\u00e3 ngu\u1ed3n. H\u1ecd c\u1ea7n x\u00e1c minh r\u1eb1ng vi\u1ec7c tri\u1ec3n khai ph\u00f9 h\u1ee3p v\u1edbi m\u00f4 h\u00ecnh UML.<\/li>\n
                    • Ch\u00fa th\u00edch r\u00f5 r\u00e0ng:<\/strong>X\u00e1c \u0111\u1ecbnh m\u1ed9t ch\u00fa th\u00edch cho c\u00e1c ki\u1ec3u d\u00e1ng v\u00e0 r\u00e0ng bu\u1ed9c c\u1ee7a b\u1ea1n. C\u00e1c \u0111\u1ed9i kh\u00e1c nhau c\u00f3 th\u1ec3 hi\u1ec3u c\u00e1c k\u00fd hi\u1ec7u theo c\u00e1ch kh\u00e1c nhau.<\/li>\n
                    • Ph\u00e2n l\u1edbp:<\/strong>N\u1ebfu h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, h\u00e3y chia s\u01a1 \u0111\u1ed3 th\u00e0nh c\u00e1c l\u1edbp. T\u1ea1o m\u1ed9t s\u01a1 \u0111\u1ed3 cho x\u00e1c th\u1ef1c, m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00e1c cho l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00e1c cho giao ti\u1ebfp m\u1ea1ng.<\/li>\n
                    • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong>S\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean nh\u1ea5t qu\u00e1n. N\u1ebfu b\u1ea1n d\u00f9ng User<\/code> trong m\u1ed9t s\u01a1 \u0111\u1ed3, \u0111\u1eebng d\u00f9ng Account<\/code> trong s\u01a1 \u0111\u1ed3 kh\u00e1c cho c\u00f9ng m\u1ed9t kh\u00e1i ni\u1ec7m.<\/li>\n<\/ul>\n

                      \ud83d\ude80 Ti\u1ebfn b\u01b0\u1edbc v\u1ec1 ph\u00eda tr\u01b0\u1edbc<\/h2>\n

                      T\u00edch h\u1ee3p b\u1ea3o m\u1eadt v\u00e0o giai \u0111o\u1ea1n thi\u1ebft k\u1ebf l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 ngu\u1ed3n l\u1ef1c. C\u00e1c s\u01a1 \u0111\u1ed3 l\u1edbp UML cung c\u1ea5p c\u1ea5u tr\u00fac c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u00e0m r\u00f5 c\u00e1c quy\u1ebft \u0111\u1ecbnh n\u00e0y. B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u1ea9n th\u1eadn c\u00e1c thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7, b\u1ea1n t\u1ea1o ra m\u1ed9t b\u1ea3n v\u1ebd ph\u00e1c h\u1ecda \u0111\u1ecbnh h\u01b0\u1edbng cho ph\u00e1t tri\u1ec3n an to\u00e0n.<\/p>\n

                      H\u00e3y nh\u1edb r\u1eb1ng m\u1ed9t s\u01a1 \u0111\u1ed3 l\u00e0 c\u00f4ng c\u1ee5 giao ti\u1ebfp. N\u00f3 c\u1ea7u n\u1ed1i kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt tr\u1eebu t\u01b0\u1ee3ng v\u00e0 m\u00e3 ngu\u1ed3n c\u1ee5 th\u1ec3. Khi b\u1ea1n m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c, b\u1ea1n gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3. Khi b\u1ea1n gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3, b\u1ea1n gi\u1ea3m thi\u1ec3u r\u1ee7i ro. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea3o m\u1eadt kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u sau c\u00f9ng, m\u00e0 l\u00e0 \u0111\u1eb7c \u0111i\u1ec3m \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng.<\/p>\n

                      Ti\u1ebfp t\u1ee5c ho\u00e0n thi\u1ec7n k\u1ef9 n\u0103ng m\u00f4 h\u00ecnh h\u00f3a c\u1ee7a b\u1ea1n. T\u00edch h\u1ee3p c\u00e1c m\u1eabu b\u1ea3o m\u1eadt m\u1edbi khi ch\u00fang xu\u1ea5t hi\u1ec7n. Lu\u00f4n c\u1ea3nh gi\u00e1c v\u1ec1 th\u00f4ng tin b\u1ea1n ti\u1ebft l\u1ed9 trong t\u00e0i li\u1ec7u. V\u1edbi k\u1ef7 lu\u1eadt v\u00e0 s\u1ef1 ch\u00fa \u00fd \u0111\u1ebfn chi ti\u1ebft, UML tr\u1edf th\u00e0nh m\u1ed9t ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh m\u1ea1nh m\u1ebd trong n\u1ed7 l\u1ef1c thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m an to\u00e0n.<\/p>\n","protected":false},"excerpt":{"rendered":"

                      Thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng an to\u00e0n \u0111\u00f2i h\u1ecfi nhi\u1ec1u h\u01a1n ch\u1ec9 vi\u1ec7c vi\u1ebft m\u00e3 ngu\u1ed3n m\u1ea1nh m\u1ebd; n\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t t\u1ea7m nh\u00ecn ki\u1ebfn tr\u00fac r\u00f5 r\u00e0ng. Khi c\u00e1c…<\/p>\n","protected":false},"author":1,"featured_media":90,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"S\u01a1 \u0111\u1ed3 l\u1edbp UML cho thi\u1ebft k\u1ebf giao th\u1ee9c b\u1ea3o m\u1eadt \ud83d\udee1\ufe0f","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng an to\u00e0n b\u1eb1ng s\u01a1 \u0111\u1ed3 l\u1edbp UML. Kh\u00e1m ph\u00e1 c\u00e1c m\u1eabu x\u00e1c th\u1ef1c, m\u00e3 h\u00f3a v\u00e0 kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb \u0111\u1ec3 thi\u1ebft k\u1ebf giao th\u1ee9c v\u1eefng ch\u1eafc.","inline_featured_image":false,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[4],"tags":[5,7],"class_list":["post-89","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-class-diagram"],"yoast_head":"\nS\u01a1 \u0111\u1ed3 l\u1edbp UML cho thi\u1ebft k\u1ebf giao th\u1ee9c b\u1ea3o m\u1eadt \ud83d\udee1\ufe0f<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng an to\u00e0n b\u1eb1ng s\u01a1 \u0111\u1ed3 l\u1edbp UML. Kh\u00e1m ph\u00e1 c\u00e1c m\u1eabu x\u00e1c th\u1ef1c, m\u00e3 h\u00f3a v\u00e0 kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb \u0111\u1ec3 thi\u1ebft k\u1ebf giao th\u1ee9c v\u1eefng ch\u1eafc.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.go-notes.com\/vn\/uml-class-diagrams-security-protocol-design\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u01a1 \u0111\u1ed3 l\u1edbp UML cho thi\u1ebft k\u1ebf giao th\u1ee9c b\u1ea3o m\u1eadt \ud83d\udee1\ufe0f\" \/>\n<meta property=\"og:description\" content=\"H\u1ecdc c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng an to\u00e0n b\u1eb1ng s\u01a1 \u0111\u1ed3 l\u1edbp UML. 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