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1. (WO2010046104) AN ENCRYPTION METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2010/046104 International Application No.: PCT/EP2009/007555
Publication Date: 29.04.2010 International Filing Date: 22.10.2009
IPC:
H04L 9/20 (2006.01) ,G06F 21/60 (2013.01) ,G06F 21/64 (2013.01) ,G06K 19/06 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
18
Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems
20
Pseudorandom key sequence combined element-for-element with data sequence
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
60
Protecting data
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
60
Protecting data
64
Protecting data integrity, e.g. using checksums, certificates or signatures
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19
Record carriers for use with machines and with at least a part designed to carry digital markings
06
characterised by the kind of the digital marking, e.g. shape, nature, code
Applicants:
CHEDDAD, Abbas [DZ/GB]; GB (UsOnly)
CONDELL, Joan [GB/GB]; GB (UsOnly)
CURRAN, Kevin [IE/GB]; GB (UsOnly)
MCKEVITT, Paul [IE/GB]; GB (UsOnly)
UNIVERSITY OF ULSTER [GB/GB]; Cromore Road Coleraine County Londonderry BT52 1SA, GB (AllExceptUS)
Inventors:
CHEDDAD, Abbas; GB
CONDELL, Joan; GB
CURRAN, Kevin; GB
MCKEVITT, Paul; GB
Agent:
BROPHY, David; FRKelly 27 Clyde Road Ballsbridge Dublin 4, IE
Priority Data:
0819443.323.10.2008GB
0819976.231.10.2008GB
Title (EN) AN ENCRYPTION METHOD
(FR) PROCÉDÉ DE CHIFFREMENT
Abstract:
(EN) There is described a method of encrypting a set of 2D input data, preferably image data. The method comprises obtaining the hash value of a password and re-sizing the hash value to fir the size of the 2D input data. The re-sized data is transformed using an irreversible transform, and the output of the transform is then used to encode the 2D data.
(FR) L'invention concerne un procédé qui permet de chiffrer un ensemble de données d'entrée 2D, de préférence des données d'image. Ce procédé consiste à obtenir la valeur de hachage d'un mot de passe et à redimensionner la valeur de hachage pour l'adapter à la taille des données d'entrée 2D. Les données redimensionnées sont transformées au moyen d'une transformée irréversible, et la sortie de la transformée est ensuite utilisée pour coder les données 2D.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (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, SE, SI, SK, SM, 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)