EP 1747526 B1 20120111 - Method of masking a digital datum, such as a biometric print, and use thereof for securing a security document
Title (en)
Method of masking a digital datum, such as a biometric print, and use thereof for securing a security document
Title (de)
Verfahren zur Maskierung eines digitalen Datenelements wie etwa eines biometrischen Abdrucks und Verwendung dafür zur Sicherung eines Sicherheitsdokuments
Title (fr)
Procédé de masquage d'une donnée numérique, telle que par exemple une empreinte biometrique
Publication
Application
Priority
- EP 2005052151 W 20050511
- FR 0405236 A 20040514
Abstract (en)
[origin: WO2005111915A2] The invention relates to a method of masking a plain datum b having n bits. The inventive method is characterised in that a masked datum m is produced using the following masking function: (I), wherein p is a prime number, bi is the bit at position i of plain datum b, and qi is the prime number at position i in a set of prime numbers (q1, ..., qn). The invention also relates to a method of masking a biometric print, consisting in: determining a set of s real minutiae which are characteristic of the print; mixing and arranging the real minutiae with t false minutiae; and forming a mixed biometric datum b having n = s + t bits, such that, for any i: bi = 1 if position i corresponds to a real minutia, and bi = 0 if position i corresponds to a false minutia. The invention can be used to secure a security document such as a bank cheque.
IPC 8 full level
G06K 9/00 (2006.01); G06K 9/62 (2006.01); G07C 9/00 (2006.01); H04L 9/32 (2006.01)
CPC (source: EP US)
G07C 9/257 (2020.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005111915 A2 20051124; WO 2005111915 A3 20060810; AT E541267 T1 20120115; DK 1747526 T3 20120514; EP 1747526 A2 20070131; EP 1747526 B1 20120111; FR 2870413 A1 20051118; FR 2870413 B1 20060804; US 2007183636 A1 20070809; US 7895440 B2 20110222
DOCDB simple family (application)
EP 2005052151 W 20050511; AT 05749585 T 20050511; DK 05749585 T 20050511; EP 05749585 A 20050511; FR 0405236 A 20040514; US 59656005 A 20050511