{"id":147300,"date":"2025-11-04T23:11:54","date_gmt":"2025-11-04T21:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/programmno-apparatnaya-platforma-cheriot-1-0-dlya-povysheniya-bezopasnosti-koda-na-yazyke-si"},"modified":"2025-11-04T23:11:54","modified_gmt":"2025-11-04T21:11:54","slug":"programmno-apparatnaya-platforma-cheriot-1-0-dlya-povysheniya-bezopasnosti-koda-na-yazyke-si","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/programmno-apparatnaya-platforma-cheriot-1-0-dlya-povysheniya-bezopasnosti-koda-na-yazyke-si","title":{"rendered":"A CHERIoT 1.0 szoftver- \u00e9s hardverplatform a C nyelv k\u00f3dj\u00e1nak biztons\u00e1g\u00e1nak n\u00f6vel\u00e9s\u00e9re","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bemutat\u00e1sra ker\u00fclt a CHERIoT 1.0 szoftver- \u00e9s hardverplatform v\u00e9gleges specifik\u00e1ci\u00f3ja (Capability Hardware Extension to RISC-V az Internet of Things sz\u00e1m\u00e1ra), amely meghat\u00e1rozza a parancssor (ISA) kiterjeszt\u00e9s\u00e9t biztons\u00e1gos eszk\u00f6z\u00f6k l\u00e9trehoz\u00e1s\u00e1hoz. A CHERIoT hardveres lehet\u0151s\u00e9geket biztos\u00edt a mem\u00f3ria hozz\u00e1f\u00e9r\u00e9s\u00e9nek nyomon k\u00f6vet\u00e9s\u00e9re, a mutat\u00f3k helyess\u00e9g\u00e9nek ellen\u0151rz\u00e9s\u00e9re \u00e9s a k\u00f3dblokkok elszigetelts\u00e9g\u00e9nek biztos\u00edt\u00e1s\u00e1ra. Ezzel egy id\u0151ben megjelent a CHERIoT ISA referenciaform\u00e1lis modellj\u00e9nek stabil verzi\u00f3ja, amely a Sail nyelven van defini\u00e1lva. A projekt fejleszt\u00e9sei BSD licenc alatt ker\u00fclnek terjeszt\u00e9sre.      <\/p>\n<p>A CHERIoT projektet a Microsoft hozta l\u00e9tre a C \u00e9s C++ nyelveken \u00edrt megl\u00e9v\u0151 k\u00f3dok biztons\u00e1gi probl\u00e9m\u00e1inak megold\u00e1s\u00e1ra, valamint az ilyen k\u00f3dok v\u00e9delm\u00e9re a jelent\u0151s \u00e1tdolgoz\u00e1s n\u00e9lk\u00fcl. A v\u00e9delem egy m\u00f3dos\u00edtott ford\u00edt\u00f3 alkalmaz\u00e1s\u00e1val val\u00f3sul meg, amely kib\u0151v\u00edtett parancssort (ISA) haszn\u00e1l a mutat\u00f3k integrit\u00e1s\u00e1nak biztos\u00edt\u00e1sa, a mem\u00f3riahat\u00e1rok ellen\u0151rz\u00e9se \u00e9s az felszabad\u00edtott mem\u00f3ria el\u00e9r\u00e9s\u00e9nek megakad\u00e1lyoz\u00e1sa \u00e9rdek\u00e9ben. 2023-ban a CHERIoT fejleszt\u00e9seit nyilv\u00e1noss\u00e1gra hozt\u00e1k \u00e9s egy\u00fcttm\u0171k\u00f6d\u00e9si projektt\u00e9 alak\u00edtott\u00e1k, amelyhez m\u00e1s c\u00e9gek is csatlakoztak.     <\/p>\n<p>A CHERIoT hardverelemei egy RISC-V architekt\u00far\u00e1ra alapozott mikrokontroller form\u00e1j\u00e1ban val\u00f3sulnak meg, amely a CHERI (Capability Hardware Extension to RISC-V) v\u00e9dett processzorarchitekt\u00far\u00e1j\u00e1t val\u00f3s\u00edtja meg, mem\u00f3ri\u00e1hoz val\u00f3 hozz\u00e1f\u00e9r\u00e9s ir\u00e1ny\u00edt\u00e1si modellj\u00e9vel, amely \"capability\" alap\u00fa (minden olvas\u00e1si \u00e9s \u00edr\u00e1si m\u0171velet mem\u00f3ri\u00e1ban enged\u00e9lyezett). A CHERIoT \u00e1ltal biztos\u00edtott utas\u00edt\u00e1sk\u00e9szlet (ISA) alapjain egy szoftveres modell k\u00e9sz\u00fclt, amely garant\u00e1lja a mem\u00f3riabiztons\u00e1got az egyes objektumok szintj\u00e9n, \u00f3vva a m\u00e1r felszabad\u00edtott mem\u00f3ria el\u00e9r\u00e9s\u00e9t\u0151l, \u00e9s megval\u00f3s\u00edt egy k\u00f6nny\u0171s\u00faly\u00fa mem\u00f3ri\u00e1hoz val\u00f3 hozz\u00e1f\u00e9r\u00e9s elk\u00fcl\u00f6n\u00edt\u00e9si rendszert.     <\/p>\n<p>A megadott v\u00e9delmi programmodell k\u00f6zvetlen\u00fcl t\u00fckr\u00f6z\u0151dik a C\/C++ nyelvi modellen, ami lehet\u0151v\u00e9 teszi annak alkalmaz\u00e1s\u00e1t megl\u00e9v\u0151 alkalmaz\u00e1sokhoz, amelyekn\u00e9l mind\u00f6ssze \u00fajra kell ford\u00edtani \u00e9s futtatni kell olyan hardveren, amely t\u00e1mogatja az ISA CHERIoT-ot. P\u00e9ld\u00e1ul a CHERIoT alkalmaz\u00e1sa lehet\u0151v\u00e9 teszi a keretek automatikus ellen\u0151rz\u00e9s\u00e9nek, a mem\u00f3ria-ter\u00fcletek \u00e9letciklus\u00e1nak nyomon k\u00f6vet\u00e9s\u00e9t \u00e9s a mutat\u00f3k integrit\u00e1s\u00e1nak biztos\u00edt\u00e1s\u00e1t a megb\u00edzhatatlan adatokat kezel\u0151 komponensekben, a k\u00f3d m\u00f3dos\u00edt\u00e1sa n\u00e9lk\u00fcl.      <\/p>\n<p>A CHERIoT alkalmaz\u00e1s\u00e1val blokkolt probl\u00e9m\u00e1k k\u00f6z\u00e9 tartozik:  <\/p>\n<ul>\n<li class=\"l\"> Objektumhat\u00e1r t\u00fall\u00e9p\u00e9se a mem\u00f3ri\u00e1ban;\n<li class=\"l\"> Mutat\u00f3k hamis\u00edt\u00e1sa (a CHERIoT alkalmaz\u00e1sakor minden mutat\u00f3t m\u00e1r l\u00e9tez\u0151 mutat\u00f3b\u00f3l kell sz\u00e1rmaztatni);\n<li class=\"l\"> Hozz\u00e1f\u00e9r\u00e9s a mem\u00f3ri\u00e1hoz felszabad\u00edt\u00e1s ut\u00e1n (b\u00e1rmilyen hozz\u00e1f\u00e9r\u00e9s a mem\u00f3ri\u00e1hoz helytelen mutat\u00f3val vagy felszabad\u00edtott objektumra mutat\u00f3 mutat\u00f3val a CHERIoT alkalmaz\u00e1sakor kiv\u00e9telt okoz).  <\/ul>\n<p>A specifik\u00e1ci\u00f3 \u00e9s a form\u00e1lis modell mellett a projekt egy 32 bites RISC-V CPU Ibex referencia-implement\u00e1ci\u00f3j\u00e1t is fejleszti, amely t\u00e1mogatja az ISA CHERIoT-ot, valamint egy m\u00f3dos\u00edtott LLVM eszk\u00f6zk\u00e9szletet. A CPU protot\u00edpus\u00e1nak s\u00e9m\u00e1i \u00e9s a hardverblokkok le\u00edr\u00e1sai Verilog nyelven, Apache 2.0 licenc alatt terjesztve tal\u00e1lhat\u00f3k. Az Ibex mag alapja a lowRISC projekt magja. A CHERIoT Ibex alapj\u00e1n ICENI chipek t\u00f6meggy\u00e1rt\u00e1sa k\u00e9sz\u00fcl, amelyek \u00e9rt\u00e9kes\u00edt\u00e9se a k\u00f6vetkez\u0151 \u00e9vre v\u00e1rhat\u00f3. Ezen k\u00edv\u00fcl a Microsoft egy Kudu mikrokontroller kifejleszt\u00e9s\u00e9n dolgozik, amely t\u00e1mogatja az ISA CHERIoT-ot. Az Ibex \u00e9s Kudu m\u00e1r teljes m\u00e9rt\u00e9kben t\u00e1mogatj\u00e1k a CHERIoT 1.0 specifik\u00e1ci\u00f3t. A CHERI-kiterjeszt\u00e9sek RISC-V processzorok sz\u00e1m\u00e1ra t\u00f6rt\u00e9n\u0151 standardiz\u00e1l\u00e1s\u00e1n dolgoznak a RISC-V International szervezeten bel\u00fcl.      <\/p>\n<p>Tov\u00e1bb\u00e1, egy FPGA alap\u00fa platform emul\u00e1tor \u00e9s egy Docker kont\u00e9ner is fejleszt\u00e9s alatt \u00e1ll a fejleszt\u0151k sz\u00e1m\u00e1ra, el\u0151re telep\u00edtett eszk\u00f6zk\u00e9szlettel \u00e9s a CPU Ibex szimul\u00e1torral, amelyet Verilator seg\u00edts\u00e9g\u00e9vel val\u00f3s\u00edtottak meg. A CHERIoT alapj\u00e1n egy val\u00f3s idej\u0171 oper\u00e1ci\u00f3s rendszer protot\u00edpusa is elk\u00e9sz\u00fclt, a CHERIoT RTOS, amely lehet\u0151v\u00e9 teszi a compartmentek (compartment) elszigetel\u00e9s\u00e9t m\u00e9g 256 MB RAM-mal rendelkez\u0151 be\u00e1gyazott rendszereken is. A CHERIoT RTOS k\u00f3dja C++ nyelven \u00edr\u00f3dott \u00e9s MIT licenc alatt terjesztik. Az oper\u00e1ci\u00f3s rendszer alapvet\u0151 komponensei, mint p\u00e9ld\u00e1ul bootloader, \u00fctemez\u0151 \u00e9s mem\u00f3riaeloszt\u00f3, compartmentk\u00e9nt vannak kialak\u00edtva.     <\/p>\n<p>A CHERIoT RTOS compartment is an isolated combination of code and global variables that resembles a shared library, but unlike the latter, it can change its state (mutable) and run in a separate security context. No external code can transfer control to the code in the compartment or access objects, except through specially defined entry points and by using pointers to objects explicitly passed when invoking another compartment. The integrity and confidentiality of code and global objects in the compartment are guaranteed.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64180\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0444\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0439-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b CHERIoT 1.0 (Capability Hardware Extension to RISC-V for Internet of Things), \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0439 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043e\u043c\u0430\u043d\u0434 (ISA) \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432. CHERIoT \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u043f\u0430\u043c\u044f\u0442\u0438, \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0441\u0442\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u0438 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0431\u043b\u043e\u043a\u043e\u0432 \u043a\u043e\u0434\u0430. \u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u043c\u043e\u0434\u0435\u043b\u0438 CHERIoT ISA, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-147300","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0444\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0439-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b CHERIoT 1.0 (Capability Hardware Extension to RISC-V for Internet of Things), \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0439 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043e\u043c\u0430\u043d\u0434 (ISA) \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/news\/programmno-apparatnaya-platforma-cheriot-1-0-dlya-povysheniya-bezopasnosti-koda-na-yazyke-si\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" 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