{"id":33413,"date":"2023-12-08T02:29:44","date_gmt":"2023-12-08T02:29:44","guid":{"rendered":"https:\/\/masterskills.org\/blog\/ma-hoa-du-lieu-data-encryption-la-gi-y-nghia-trong-thuong-mai-dien-tu.html"},"modified":"2023-12-23T11:28:46","modified_gmt":"2023-12-23T04:28:46","slug":"ma-hoa-du-lieu-data-encryption-la-gi-y-nghia-trong-thuong-mai-dien-tu","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/ma-hoa-du-lieu-data-encryption-la-gi-y-nghia-trong-thuong-mai-dien-tu.html","title":{"rendered":"M\u00e3 h\u00f3a d\u1eef li\u1ec7u (Data encryption) l\u00e0 g\u00ec? \u00dd ngh\u0129a trong th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed"},"content":{"rendered":"
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H\u00ecnh minh h\u1ecda (Ngu\u1ed3n: calendar-free-printable)<\/p>\n<\/div>\n<\/div>\n

M\u00e3 h\u00f3a d\u1eef li\u1ec7u<\/font><\/h2>\n

Kh\u00e1i ni\u1ec7m<\/b><\/p>\n

M\u00e3 h\u00f3a d\u1eef li\u1ec7u<\/b> trong ti\u1ebfng Anh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0:\u00a0Data encryption.<\/b><\/p>\n

M\u00e3 ho\u00e1<\/b> l\u00e0 qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i c\u00e1c th\u00f4ng tin, b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p to\u00e1n h\u1ecdc v\u00e0 m\u1ed9t kho\u00e1 b\u00ed m\u1eadt \u0111\u1ec3 sinh ra m\u1ed9t chu\u1ed7i c\u00e1c k\u00ed t\u1ef1 kh\u00f3 hi\u1ec3u. Th\u1ef1c ch\u1ea5t l\u00e0 vi\u1ec7c che d\u1ea5u c\u00e1c th\u00f4ng b\u00e1o, ch\u1ec9 ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn c\u00f3 th\u1ec3 \u0111\u1ecdc n\u00f3. Khoa h\u1ecdc nghi\u00ean c\u1ee9u m\u00e3 ho\u00e1 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1eadt m\u00e3.\u00a0<\/p>\n

M\u1eadt m\u00e3 kh\u00f4ng li\u00ean quan \u0111\u1ebfn ng\u1ee5y trang k\u00ed. Ngu\u1ef5 trang k\u00ed l\u00e0m cho m\u1eaft th\u01b0\u1eddng kh\u00f4ng nh\u00ecn th\u1ea5y v\u0103n b\u1ea3n. M\u1eadt m\u00e3 kh\u00f4ng c\u1ed1 g\u1eafng che gi\u1ea5u v\u0103n b\u1ea3n, n\u00f3 chuy\u1ec3n \u0111\u1ed5i v\u0103n b\u1ea3n sang d\u1ea1ng chu\u1ed7i k\u00ed t\u1ef1, ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn \u0111\u01b0\u1ee3c nh\u01b0ng kh\u00f4ng hi\u1ec3u ngh\u0129a c\u1ee7a n\u00f3.\u00a0<\/p>\n

M\u1ed9t chu\u1ed7i k\u00ed t\u1ef1 kh\u00f3 hi\u1ec3u \u0111\u01b0\u1ee3c sinh ra b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c bit, t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c k\u00ed t\u1ef1 trong b\u1ea3ng ch\u1eef c\u00e1i ho\u1eb7c s\u1ed1, t\u1ea1o th\u00e0nh m\u1ed9t th\u00f4ng b\u00e1o c\u00f3 v\u1ebb nh\u01b0 \u0111\u01b0\u1ee3c l\u1eafp r\u00e1p ng\u1eabu nhi\u00ean.\u00a0<\/p>\n

M\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i v\u0103n b\u1ea3n r\u00f5 sang v\u0103n b\u1ea3n m\u00e3 (s\u1ef1 l\u1eafp r\u00e1p ng\u1eabu nhi\u00ean c\u00e1c bit) \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u01b0\u01a1ng tr\u00ecnh m\u00e3 ho\u00e1<\/b>. C\u00e1c th\u00f4ng b\u00e1o \u0111\u01b0\u1ee3c m\u00e3 ho\u00e1 tr\u01b0\u1edbc khi ch\u00fang \u0111\u01b0\u1ee3c g\u1eedi l\u00ean m\u1ea1ng ho\u1eb7c Internet. Khi t\u1edbi \u0111\u00edch h\u1ee3p l\u1ec7, th\u00f4ng b\u00e1o \u0111\u01b0\u1ee3c gi\u1ea3i m\u00e3 nh\u1edd ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3i m\u00e3.\u00a0<\/p>\n

Ch\u01b0\u01a1ng tr\u00ecnh m\u00e3 h\u00f3a v\u00e0 logic sau ch\u00fang, g\u1ecdi l\u00e0 thu\u1eadt to\u00e1n m\u00e3 ho\u00e1, \u0111\u01b0\u1ee3c coi l\u00e0 y\u1ebfu t\u1ed1 c\u1ef1c k\u00ec quan tr\u1ecdng. Bi\u1ebft \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a m\u1ed9t s\u1ed1 thu\u1eadt to\u00e1n, ch\u00ednh ph\u1ee7 M\u1ef9 \u0111\u00e3 ng\u0103n c\u1ea5m vi\u1ec7c c\u00f4ng b\u1ed1 r\u1ed9ng r\u00e3i v\u00e0 chi ti\u1ebft c\u00e1c thu\u1eadt to\u00e1n m\u00e3 ho\u00e1.\u00a0<\/p>\n

M\u1ed9t thu\u1ed9c t\u00ednh h\u1ea5p d\u1eabn v\u00e0 c\u1ea7n thi\u1ebft c\u1ee7a c\u00e1c thu\u1eadt to\u00e1n ho\u1eb7c c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh m\u00e3 ho\u00e1 l\u00e0 m\u1ed9t ng\u01b0\u1eddi c\u00f3 th\u1ec3 bi\u1ebft chi ti\u1ebft ch\u01b0\u01a1ng tr\u00ecnh m\u00e3 ho\u00e1 nh\u01b0ng v\u1eabn kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng gi\u1ea3i m\u00e3\u00a0th\u00f4ng b\u00e1o n\u1ebfu kh\u00f4ng bi\u1ebft kho\u00e1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh m\u00e3 ho\u00e1.\u00a0<\/p>\n

\u0110\u1ed9 d\u00e0i t\u1ed1i thi\u1ec3u c\u1ee7a m\u1ed9t kho\u00e1 l\u00e0 40 bit, n\u00f3 c\u00f3 th\u1ec3 d\u00e0i h\u01a1n, ch\u1eb3ng h\u1ea1n 128 bit, s\u1ebd \u0111\u1ea3m b\u1ea3o an to\u00e0n h\u01a1n nhi\u1ec1u do kh\u00f3 b\u1ecb ph\u00e1t hi\u1ec7n.<\/p>\n

M\u00e3 h\u00f3a th\u00f4ng tin<\/b> l\u00e0 qu\u00e1 tr\u00ecnh chuy\u1ec3n c\u00e1c v\u0103n b\u1ea3n hay c\u00e1c t\u00e0i li\u1ec7u g\u1ed1c th\u00e0nh c\u00e1c v\u0103n b\u1ea3n d\u01b0\u1edbi d\u1ea1ng m\u1eadt m\u00e3 \u0111\u1ec3 b\u1ea5t c\u1ee9 ai, ngo\u00e0i ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn, \u0111\u1ec1u kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c.\u00a0<\/p>\n

M\u1ee5c \u0111\u00edch c\u1ee7a k\u0129 thu\u1eadt m\u00e3 h\u00f3a l\u00e0: \u0111\u1ea3m b\u1ea3o an to\u00e0n cho c\u00e1c th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef, v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho th\u00f4ng tin khi truy\u1ec1n ph\u00e1t.\u00a0<\/p>\n

\u00dd ngh\u0129a trong th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/font><\/h3>\n

M\u00e3 h\u00f3a l\u00e0 m\u1ed9t k\u0129 thu\u1eadt kh\u00e1 ph\u1ed5 bi\u1ebfn, c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ea3m b\u1ea3o b\u1ed1n trong s\u00e1u kh\u00eda c\u1ea1nh an to\u00e0n c\u1ee7a th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed g\u1ed3m c\u00f3:\u00a0<\/p>\n

– \u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a th\u00f4ng \u0111i\u1ec7p;\u00a0<\/p>\n

– Ch\u1ed1ng ph\u1ee7 \u0111\u1ecbnh;\u00a0<\/p>\n

– \u0110\u1ea3m b\u1ea3o t\u00ednh x\u00e1c th\u1ef1c;\u00a0<\/p>\n

– \u0110\u1ea3m b\u1ea3o t\u00ednh b\u00ed m\u1eadt c\u1ee7a th\u00f4ng tin.<\/p>\n

Qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a th\u00f4ng tin \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u01a1 s\u1edf s\u1eed d\u1ee5ng m\u1ed9t kh\u00f3a (hay c\u00f2n g\u1ecdi l\u00e0 m\u00e3). Kh\u00f3a (m\u00e3) ch\u00ednh l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 chuy\u1ec3n v\u0103n b\u1ea3n g\u1ed1c th\u00e0nh v\u0103n b\u1ea3n m\u00e3 h\u00f3a.<\/p>\n

Trong th\u1eddi \u0111\u1ea1i ng\u00e0y nay, hai k\u0129 thu\u1eadt c\u01a1 b\u1ea3n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a th\u00f4ng tin tr\u00ean Internet l\u00e0 m\u00e3 h\u00f3a “kh\u00f3a \u0111\u01a1n” hay m\u00e3 h\u00f3a “kh\u00f3a b\u00ed m\u1eadt” v\u00e0 m\u00e3 h\u00f3a “kh\u00f3a c\u00f4ng c\u1ed9ng”.<\/p>\n

(T\u00e0i li\u1ec7u tham kh\u1ea3o: B\u00e0i gi\u1ea3ng Th\u01b0\u01a1ng m\u1ea1i \u0110i\u1ec7n t\u1eed, Tr\u1ea7n C\u00f4ng Nghi\u1ec7p, 2008, NXB Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Kinh t\u1ebf v\u00e0 Qu\u1ea3n tr\u1ecb Kinh doanh)<\/i><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\n M\u00e3 h\u00f3a d\u1eef li\u1ec7u (ti\u1ebfng Anh: Data encryption) l\u00e0 gi\u1ea3i ph\u00e1p mang t\u00ednh k\u0129 thu\u1eadt \u0111\u1ec3 ph\u00f2ng tr\u00e1nh r\u1ee7i ro trong th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed.\n <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[418],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/33413"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=33413"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/33413\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=33413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=33413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=33413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}