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1. (WO2017064361) MESSAGE AUTHENTICATION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/064361 International Application No.: PCT/FI2015/050701
Publication Date: 20.04.2017 International Filing Date: 16.10.2015
IPC:
H04L 9/32 (2006.01) ,H04L 9/18 (2006.01) ,G06F 21/44 (2013.01) ,H04W 12/06 (2009.01)
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
18
Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems
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
30
Authentication, i.e. establishing the identity or authorisation of security principals
44
Program or device authentication
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
12
Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity
06
Authentication
Applicants:
NOKIA TECHNOLOGIES OY [FI/FI]; Karaportti 3 FI-02610 Espoo, FI
Inventors:
KOSKIMIES, Olli Oskari; FI
Agent:
SEPPO LAINE OY; Itämerenkatu 3 B FI-00180 Helsinki, FI
Priority Data:
Title (EN) MESSAGE AUTHENTICATION
(FR) AUTHENTIFICATION DE MESSAGE
Abstract:
(EN) According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to compile, from information comprised in a message received in the apparatus, a protection bit sequence, the protection bit sequence comprising a first part and a second part, identify a sender of the message based on identifying a secret key that decrypts the first part into a plaintext bit sequence comprised in the message, and verify the protection bit sequence has been advanced with respect to a protection bit sequence in a previous message from the same sender.
(FR) La présente invention porte, selon un aspect donné à titre d'exemple, sur un appareil comprenant au moins un noyau de traitement, au moins une mémoire comprenant un code de programme d'ordinateur, la ou les mémoires et le code de programme d'ordinateur étant configurés de sorte à contraindre, avec le ou les noyaux de traitement, l'appareil au moins à compiler, à partir d'informations incluses dans un message reçu dans l'appareil, une séquence de bits de protection, la séquence de bits de protection comprenant une première partie et une seconde partie, à identifier un expéditeur du message sur la base de l'identification d'une clé secrète qui décrypte la première partie en une séquence de bits de texte en clair comprise dans le message, et à vérifier que la séquence de bits de protection a été avancée par rapport à une séquence de bits de protection dans un message précédent provenant du même expéditeur.
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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)