{"id":3062,"date":"2013-07-23T10:45:07","date_gmt":"2013-07-23T03:45:07","guid":{"rendered":"http:\/\/snt.com.vn\/blog\/?p=3062"},"modified":"2013-07-23T10:45:07","modified_gmt":"2013-07-23T03:45:07","slug":"l%e1%bb%97-h%e1%bb%95ng-b%e1%ba%a3o-m%e1%ba%adt-trong-750-tri%e1%bb%87u-sim-co-th%e1%bb%83-b%e1%bb%8b-l%e1%bb%a3i-d%e1%bb%a5ng-d%e1%bb%83-chi%e1%ba%bfm-quy%e1%bb%81n-ki%e1%bb%83m-soat-di%e1%bb%87n-tho","status":"publish","type":"post","link":"https:\/\/snt.com.vn\/blog\/l%e1%bb%97-h%e1%bb%95ng-b%e1%ba%a3o-m%e1%ba%adt-trong-750-tri%e1%bb%87u-sim-co-th%e1%bb%83-b%e1%bb%8b-l%e1%bb%a3i-d%e1%bb%a5ng-d%e1%bb%83-chi%e1%ba%bfm-quy%e1%bb%81n-ki%e1%bb%83m-soat-di%e1%bb%87n-tho\/","title":{"rendered":"L\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt trong 750 tri\u1ec7u SIM c\u00f3 th\u1ec3 b\u1ecb l\u1ee3i d\u1ee5ng \u0111\u1ec3 chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t \u0111i\u1ec7n tho\u1ea1i"},"content":{"rendered":"<p><a href=\"http:\/\/snt.com.vn\/blog\/wp-content\/uploads\/2013\/07\/sim_cards-cropped.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3063\" title=\"sim_cards-cropped\" src=\"http:\/\/snt.com.vn\/blog\/wp-content\/uploads\/2013\/07\/sim_cards-cropped.jpg\" alt=\"\" width=\"600\" height=\"293\" \/><\/a><\/p>\n<p>T\u1edd New York Times cho bi\u1ebft r\u1eb1ng m\u1ed9t nh\u00e0 nghi\u00ean c\u1ee9u b\u1ea3o m\u1eadt m\u1edbi \u0111\u00e2y \u0111\u00e3 ph\u00e1t hi\u1ec7n ra l\u1ed7 h\u1ed5ng trong ch\u1ebf \u0111\u1ed9 m\u00e3 h\u00f3a c\u1ee7a m\u1ed9t s\u1ed1 SIM di \u0111\u1ed9ng c\u00f3 th\u1ec3 b\u1ecb l\u1ee3i d\u1ee5ng b\u1edfi hacker \u0111\u1ec3 chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t \u0111i\u1ec7n tho\u1ea1i. L\u1ed7 h\u1ed5ng n\u00e0y c\u00f3 li\u00ean quan \u0111\u1ebfn nh\u1eefng chi\u1ebfc SIM s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n DES (Data Encryption Standard) \u0111\u1ec3 m\u00e3 h\u00f3a th\u00f4ng tin &#8211; \u0111\u00e2y l\u00e0 m\u1ed9t chu\u1ea9n c\u0169 \u0111\u00e3 b\u1ecb lo\u1ea1i b\u1ecf b\u1edfi m\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0ng hi\u1ec7n v\u1eabn c\u00f3 h\u00e0ng tr\u0103m tri\u1ec7u th\u1ebb SIM \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng n\u1eb1m trong t\u1ea7m \u1ea3nh h\u01b0\u1edfng.<\/p>\n<p> Karsten Nohl, nh\u00e0 s\u00e1ng l\u1eadp h\u00e3ng b\u1ea3o m\u1eadt Security Research Labs \u1edf \u0110\u1ee9c, \u0111\u00e3  kh\u00e1m ph\u00e1 ra r\u1eb1ng vi\u1ec7c g\u1eedi m\u1ed9t tin nh\u1eafn gi\u1ea3 m\u1ea1o nh\u00e0 m\u1ea1ng \u0111\u1ebfn \u0111i\u1ec7n tho\u1ea1i  c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t ch\u1ebf \u0111\u1ed9 tr\u1ea3 l\u1eddi t\u1ef1 \u0111\u1ed9ng c\u1ee7a 25% s\u1ed1 SIM DES. Tin nh\u1eafn do  \u0111i\u1ec7n tho\u1ea1i t\u1ef1 tr\u1ea3 l\u1eddi l\u1ea1i s\u1ebd ch\u1ee9a kh\u00f3a b\u1ea3o m\u1eadt 56-bit c\u1ee7a SIM, v\u00e0 m\u1ed9t  khi \u0111\u00e3 c\u00f3 kh\u00f3a n\u00e0y trong tay, Nohl c\u00f3 th\u1ec3 g\u1eedi virus ng\u01b0\u1ee3c tr\u1edf l\u1ea1i SIM  ch\u1ec9 b\u1eb1ng tin nh\u1eafn. Virus n\u00f3i tr\u00ean s\u1ebd cho ph\u00e9p hacker can thi\u1ec7p v\u00e0o d\u1eef  li\u1ec7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ecdc tin nh\u1eafn, th\u1eadm ch\u00ed l\u00e0 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 giao  d\u1ecbch v\u1edbi nh\u00e0 m\u1ea1ng. Nohl n\u00f3i to\u00e0n b\u1ed9 quy tr\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n  trong ch\u1ec9 2 ph\u00fat b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t chi\u1ebfc PC b\u00ecnh th\u01b0\u1eddng.<\/p>\n<p> Trong hai n\u0103m qua, Nohl \u0111\u00e3 ki\u1ec3m nghi\u1ec7m ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a m\u00ecnh tr\u00ean 1000  th\u1ebb SIM \u1edf M\u1ef9 v\u00e0 Ch\u00e2u \u00c2u. DES hi\u1ec7n \u0111ang c\u00f3 m\u1eb7t tr\u00ean kho\u1ea3ng 3 t\u1ec9 chi\u1ebfc SIM  tr\u00ean to\u00e0n c\u1ea7u, v\u00e0 theo \u01b0\u1edbc t\u00ednh c\u1ee7a anh th\u00ec 750 tri\u1ec7u SIM l\u00e0 c\u00f3 kh\u1ea3  n\u0103ng b\u1ecb t\u1ea5n c\u00f4ng b\u1eb1ng l\u1ed7 h\u1ed5ng n\u00f3i tr\u00ean. Nh\u1eefng nh\u00e0 m\u1ea1ng s\u1eed d\u1ee5ng k\u0129 thu\u1eadt  DES-triple (t\u0103ng g\u1ea5p ba l\u1ea7n vi\u1ec7c m\u00e3 h\u00f3a so v\u1edbi DES) th\u00ec kh\u00f4ng b\u1ecb \u1ea3nh  h\u01b0\u1edfng. Nh\u1eefng SIM n\u00e0o \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p ch\u1ebf \u0111\u1ed9 m\u00e3 h\u00f3a AES (Advanced Encryption Standard) \u0111\u1ec3 d\u00f9ng thay cho DES c\u0169ng an to\u00e0n.<\/p>\n<p> Hi\u1ec7n l\u1ed7i \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00f4ng b\u00e1o \u0111\u1ebfn Hi\u1ec7p h\u1ed9i GSM c\u0169ng nh\u01b0 nh\u1eefng c\u00f4ng ty c\u00f3  tr\u00e1ch nhi\u1ec7m ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng h\u1ea1 t\u1ea7ng m\u1ea1ng GSM. Hi\u1ec7p h\u1ed9i n\u00e0y c\u0169ng \u0111\u00e3  th\u00f4ng b\u00e1o cho nh\u1eefng nh\u00e0 s\u1ea3n xu\u1ea5t SIM v\u00e0 nh\u1eefng c\u00f4ng ty kh\u00e1c c\u00f3 li\u00ean quan  \u0111\u1ec3 h\u1ecd ph\u00e2n t\u00edch v\u00e0 t\u00ecm ra bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c. V\u00e0o ng\u00e0y 1\/8 t\u1edbi \u0111\u00e2y Nohl  d\u1ef1 t\u00ednh s\u1ebd ti\u1ebft l\u1ed9 v\u1ec1 ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng c\u1ee7a m\u00ecnh \u1edf h\u1ed9i ngh\u1ecb b\u1ea3o m\u1eadt  Black Hat.<\/p>\n<div><em><strong>Ngu\u1ed3n: <a href=\"http:\/\/www.nytimes.com\/2013\/07\/22\/technology\/encryption-flaw-makes-phones-possible-accomplices-in-theft.html?_r=0\" target=\"_blank\">New York Times<\/a><\/strong><\/em><\/div>\n","protected":false},"excerpt":{"rendered":"<p>T\u1edd New York Times cho bi\u1ebft r\u1eb1ng m\u1ed9t nh\u00e0 nghi\u00ean c\u1ee9u b\u1ea3o m\u1eadt m\u1edbi \u0111\u00e2y \u0111\u00e3 ph\u00e1t hi\u1ec7n ra l\u1ed7<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.2.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt trong 750 tri\u1ec7u SIM c\u00f3 th\u1ec3 b\u1ecb l\u1ee3i d\u1ee5ng \u0111\u1ec3 chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t \u0111i\u1ec7n tho\u1ea1i - 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