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Machine translation
1. (WO2006114684) METHOD AND APPARATUS FOR GROUP KEY GENERATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/114684    International Application No.:    PCT/IB2006/000992
Publication Date: 02.11.2006 International Filing Date: 24.04.2006
IPC:
H04L 9/08 (2006.01), H04H 60/23 (2008.01)
Applicants: NOKIA CORPORATION [FI/FI]; Keilalahdentie 4, FI-02150 Espoo (FI) (For All Designated States Except US).
NOKIA INC. [US/US]; 6000 Connection Drive, Irving, Texas 75039 (US) (LC only).
TARKKALA, Lauri [FI/FI]; (FI) (For US Only)
Inventors: TARKKALA, Lauri; (FI)
Agent: FILL, Peter, N.; Morgan & Finnegan, LLP, 3 World Financial Center, New York, New York 10281-2101 (US)
Priority Data:
60/674,959 25.04.2005 US
Title (EN) METHOD AND APPARATUS FOR GROUP KEY GENERATION
(FR) DERIVATION AMELIOREE DE CLES DE DIFFUSION
Abstract: front page image
(EN)A key generation system is disclosed that provides for the generation of privileged group keys based on the input of a privileged group. The system performing the key generation has stored component keys corresponding to every possible subset X of the unitary set, where subsets X have k or fewer members. The privileged group key is generated for the privileged set by passing ordered component keys of subsets X that do not contain members of the privileged set to a pseudo random function.
(FR)La présente invention concerne un système de génération de clés qui assure la génération de clés de groupes privilégiés sur la base de l'entrée d'un groupe privilégié. Le système effectuant la génération de clés dispose de clés à composants stockées correspondant à chaque sous-ensemble possible X de l'ensemble unitaire, lesdits sous-ensembles X ayant un nombre de membres k ou inférieur à k. La clé de groupe privilégié est générée pour l'ensemble privilégié au moyen de l'envoi de clés à constituants ordonnés de sous-ensembles X qui ne contiennent pas de membres de l'ensemble privilégié à une fonction pseudo-aléatoire.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)