{"id":38136,"date":"2021-01-20T08:31:44","date_gmt":"2021-01-20T08:31:44","guid":{"rendered":"https:\/\/\/authentificateur-securise-de-composants-de-classe-automobile\/"},"modified":"2021-01-20T08:31:44","modified_gmt":"2021-01-20T08:31:44","slug":"authentificateur-securise-de-composants-de-classe-automobile","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/authentificateur-securise-de-composants-de-classe-automobile\/","title":{"rendered":"Authentificateur s\u00e9curis\u00e9 de composants de classe automobile"},"content":{"rendered":"

Dernier n\u00e9 de la gamme de solutions AEC-Q100 Classe 1 de Maxim Integrated pour syst\u00e8mes automobiles, le DS28E40 est un authentificateur \u00e0 alimentation parasite, qui utilise une interface 1-Wire pour faciliter la connectivit\u00e9. Ce circuit int\u00e9gr\u00e9 d’authentification garantit que seuls des composants authentiques ne soient utilis\u00e9s dans certains syst\u00e8mes \u00e9lectroniques, comme les syst\u00e8mes d’aide avanc\u00e9s \u00e0 la conduite (ADAS) ou les batteries de v\u00e9hicules \u00e9lectriques.<\/p>\n

Au fur et \u00e0 mesure que les voitures gagnent en sophistication au niveau fonctionnalit\u00e9s, les risques en mati\u00e8re de s\u00fbret\u00e9 et de s\u00e9curit\u00e9 augmentent aussi. Les constructeurs automobiles ont recours \u00e0 l’authentification pour deux raisons : s’assurer que seuls des composants certifi\u00e9s par les fabricants puissent \u00eatre connect\u00e9s en toute s\u00e9curit\u00e9 aux syst\u00e8mes du v\u00e9hicule, et limiter les risques grandissants d\u2019attaque par des malwares. Cependant, la plupart des microcontr\u00f4leurs totalement s\u00e9curis\u00e9s pr\u00e9sentent une empreinte assez grande, et n\u00e9cessitent des \u00e9quipes de d\u00e9veloppement logiciel pour cr\u00e9er, tester rigoureusement et d\u00e9boguer le code n\u00e9cessaire. Les probl\u00e8mes que posent les solutions actuelles bas\u00e9es sur un microcontr\u00f4leur sont les suivants : Plus le volume de code est important, plus le risque de bogue ou de malware susceptible de nuire aux performances est \u00e9lev\u00e9. De plus, les solutions de s\u00e9curit\u00e9 automobile \u00e0 interface I\u00b2C ou SPI disponibles sur le march\u00e9 peuvent n\u00e9cessiter plusieurs broches d’interface, jusqu’\u00e0 cinq ou six, notamment des lignes d’alimentation et de r\u00e9initialisation d\u00e9di\u00e9es. Augmenter le nombre de broches est susceptible d’augmenter les co\u00fbts et de cr\u00e9er de nouveaux probl\u00e8mes de fiabilit\u00e9.<\/p>\n

L’authentificateur DeepCover DS28E40 est une solution 1-Wire \u00e0 fonction unique, qui r\u00e9pond aux normes de performance AEC-Q100 Classe 1, et qui remplace les approches \u00e0 base de micro-contr\u00f4leur. Ce dispositif \u00e0 fonction unique offre aux fabricants d’\u00e9quipements d’origine un ensemble d’algorithmes et d’outils d\u00e9di\u00e9s pour r\u00e9pondre \u00e0 leurs besoins sp\u00e9cifiques de s\u00e9curit\u00e9, tout en simplifiant la conception du syst\u00e8me et le d\u00e9veloppement du code associ\u00e9. Son chiffrement ECDSA (courbe ECC-P256) asym\u00e9trique \u00e0 cl\u00e9 publique\/priv\u00e9e, et ses autres algorithmes d’authentification \u00e0 cl\u00e9 sont int\u00e9gr\u00e9s au CI, ce qui \u00e9vite tout d\u00e9veloppement de code propri\u00e9taire au niveau du dispositif. Cet algorithme ainsi que les autres algorithmes int\u00e9gr\u00e9s au CI d’authentification offrent la meilleure d\u00e9fense contre l\u2019utilisation de composants non-autoris\u00e9s susceptibles de compromettre les performances, la s\u00e9curit\u00e9 ou l’int\u00e9grit\u00e9 des donn\u00e9es.<\/p>\n

L’interface 1-Wire combine alimentation et communication sur une m\u00eame broche et ne n\u00e9cessite donc que deux interconnexions dont la broche de masse. Un nombre d’interconnexions moindre r\u00e9duit les co\u00fbts et am\u00e9liore encore la fiabilit\u00e9 en permettant de connecter un calculateur \u00e0 un point distant \u00e0 l’aide d’un faisceau de c\u00e2bles plus petit. Le DS28E40 se pr\u00e9sente en bo\u00eetier TDFN compact de 4 x 3 mm, et fonctionne dans la plage de temp\u00e9rature -40\u00b0C \u00e0 +125\u00b0C.<\/p>\n

maxim.click\/Maxim_Automotive_Security<\/a><\/p>\n

maxim.click\/DS28E40_Product<\/a><\/p>\n

www.maximintegrated.com<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Dans les syst\u00e8mes sensibles, les composants d’origine sont les plus s\u00fbrs et les plus fiables. 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