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1. (WO2019045863) HARDWARE-ENFORCED FIRMWARE SECURITY
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Pub. No.: WO/2019/045863 International Application No.: PCT/US2018/039633
Publication Date: 07.03.2019 International Filing Date: 27.06.2018
IPC:
G06F 21/57 (2013.01) ,G06F 21/70 (2013.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
21
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
50
Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
57
Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
21
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70
Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
Applicants:
MICROSOFT TECHNOLOGY LICENSING, LLC [US/US]; One Microsoft Way Redmond, Washington 98052-6399, US
Inventors:
KHESSIB, Badriddine; US
KELLY, Bryan David; US
BULUSU, Mallik; US
Agent:
MINHAS, Sandip S.; US
CHEN, Wei-Chen Nicholas; US
HINOJOSA, Brianna L.; US
HOLMES, Danielle J.; US
SWAIN, Cassandra T.; US
WONG, Thomas S.; US
CHOI, Daniel; US
HWANG, William C.; US
WIGHT, Stephen A.; US
CHATTERJEE, Aaron C.; US
JARDINE, John S.; US
GOLDSMITH, Micah P.; US
Priority Data:
15/694,74801.09.2017US
Title (EN) HARDWARE-ENFORCED FIRMWARE SECURITY
(FR) SÉCURITÉ DE MICROPROGRAMME APPLIQUÉE PAR MATÉRIEL
Abstract:
(EN) A Root of Trust hardware hierarchy provides firmware security for motherboard and peripheral devices. Power is received at a computer system and, in response to the receipt of power, a standby power rail of a motherboard of the computer system is energized, and a first microcontroller mounted on the motherboard authenticates first firmware associated with a baseboard management controller coupled to the first microcontroller. If the authentication of the first firmware is successful, the baseboard management controller is powered on, a central processing unit coupled to the first microcontroller is held in reset, and a standby power rail of a peripheral component card is energized. Second firmware associated with the central processing unit is authenticated using the first microcontroller and a second microcontroller mounted on the peripheral component card authenticates third firmware associated with a chip mounted on the peripheral component card and coupled to the second microcontroller.
(FR) Une hiérarchie de matériel racine de confiance (RoT) assure la sécurité de microprogrammes pour des dispositifs de carte mère et périphériques. Une alimentation est reçue au niveau d'un système informatique et, en réaction à la réception de l'alimentation, un rail d'alimentation de réserve d'une carte mère du système informatique est activé, et un premier microcontrôleur monté sur la carte mère authentifie un premier microprogramme associé à un contrôleur de gestion de carte de base couplé au premier microcontrôleur. Si l'authentification du premier microprogramme réussit, le contrôleur de gestion de carte de base est mis sous tension, une unité centrale de traitement couplée au premier microcontrôleur est maintenue en réinitialisation, et un rail d'alimentation de réserve d'une carte de composants périphériques est activé. Un deuxième microprogramme associé à l'unité centrale de traitement est authentifié à l'aide du premier microcontrôleur, et un second microcontrôleur monté sur la carte de composants périphériques authentifie un troisième microprogramme associé à une puce montée sur la carte de composants périphériques et couplée au second microcontrôleur.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)