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1. (WO2007007214) ESTABLISHMENT OF A TRUSTED RELATIONSHIP BETWEEN UNKNOWN COMMUNICATION PARTIES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/007214 International Application No.: PCT/IB2006/051481
Publication Date: 18.01.2007 International Filing Date: 11.05.2006
IPC:
H04L 9/32 (2006.01) ,H04L 9/30 (2006.01) ,H04L 29/06 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
32
including means for verifying the identity or authority of a user of the system
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
28
using particular encryption algorithm
30
Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29
Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02
Communication control; Communication processing
06
characterised by a protocol
Applicants:
NOKIA CORPORATION [FI/FI]; Keilalahdentie 4 FI-02150 Espoo, FI (AllExceptUS)
TARKKALA, Lauri [FI/FI]; FI (UsOnly)
ASOKAN, Nadarajah [CA/FI]; FI (UsOnly)
Inventors:
TARKKALA, Lauri; FI
ASOKAN, Nadarajah; FI
Agent:
LESON, Thomas, J., A.; c/o TBK-Patent Bavariaring 4-6 80336 Munich, DE
Priority Data:
05014787.507.07.2005EP
11/237,88129.09.2005US
Title (EN) ESTABLISHMENT OF A TRUSTED RELATIONSHIP BETWEEN UNKNOWN COMMUNICATION PARTIES
(FR) ETABLISSEMENT D'UNE RELATION DE CONFIANCE ENTRE DES PARTIES INCONNUES A UNE SESSION DE COMMUNICATION
Abstract:
(EN) The present invention provides an establishment of a trusted relationship between two mutually unknown communication parties in a communication system without the use of a trusted third party. The invention is based on non-interactive proofs-of-work being purpose-bound for establishing the trusted relationship and cryptographically signing information to be transferred between the communication parties using such proofs-of- work for the solving of a problem instance along with verifying the proofs-of-work and generating a session object for a trusted relationship, when the verifying yields an affirmative result.
(FR) Cette invention concerne l'établissement d'une relation de confiance entre deux parties à une session de communication inconnues l'une à l'autre dans un système de communication, sans le recours à une tierce partie de confiance. Cette invention se base sur des preuves d'action non interactives qui sont spécialement conçues pour établir la relation de confiance et sur la signature cryptographique d'informations devant être transférées entre les parties à la session de communication au moyen de ces preuves d'action, pour résoudre un problème ponctuel, ainsi que sur la vérification de ces preuves d'action, un objet de session étant généré pour une relation de confiance, lorsque l'opération de vérification produit un résultat affirmatif.
front page image
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 (ARIPO) (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)
Also published as:
KR1020080025202EP1900141JP2008545353CN101243643