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1. (WO2009034520) ENCRYPTION BY PIXEL PROPERTY SEPARATION
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Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/034520    International Application No.:    PCT/IB2008/053630
Publication Date: 19.03.2009 International Filing Date: 09.09.2008
IPC:
H04N 1/32 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32
Circuits or arrangements for control or supervision between transmitter and receiver
Applicants: NXP B.V. [NL/NL]; High Tech Campus 60 NL-5656 AG Eindhoven (NL) (For All Designated States Except US).
IYER, Karthik Chandrashekar [IN/IN]; (GB) (For US Only).
SUBRAMANYA, Aravinda [IN/IN]; (GB) (For US Only)
Inventors: IYER, Karthik Chandrashekar; (GB).
SUBRAMANYA, Aravinda; (GB)
Agent: WHITE, Andrew, G.; c/o NXP Semiconductors, IP Department, Cross Oak Lane, Redhill Surrey RH1 5HA (GB)
Priority Data:
0718699.2 13.09.2007 GB
08103697.2 23.04.2008 EP
Title (EN) ENCRYPTION BY PIXEL PROPERTY SEPARATION
(FR) CHIFFREMENT PAR LA SÉPARATION DES CARACTÉRISTIQUES DE PIXEL
Abstract: front page image
(EN)A method of encrypting a digital file composed of a sequence of bytes, each byte defined by a relative position within the digital file and a value, the method comprising: using an encryption key to encode the relative position separately from the value of each byte; and producing an encrypted digital file in which the correlation between relative position and value of each byte in the original digital file is concealed in the encrypted digital file.
(FR)La présente invention concerne un procédé de chiffrement d'un fichier numérique composé d'une séquence d'octets, chaque octet étant défini par une position relative à l'intérieur du fichier numérique et une valeur, le procédé comportant : l'utilisation d'une clé de chiffrement afin de coder la position relative séparément de la valeur de chaque octet ; et la production d'un fichier numérique chiffré dans lequel la corrélation entre la position relative et la valeur de chaque octet dans le fichier numérique original est dissimulée dans le fichier numérique chiffré.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, 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 Org. (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (EAPO) (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, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)