Patent ID: 8314682

Claim:
A method of processing biometric data relating to a biological part, in a biometric system having (1) at least one set of reference biometric data resulting from the application of an “exclusive or” operation between a first set of biometric data and a first encoded key and (2) a piece of information relating to the first key; said method comprising the following steps: (a) obtaining a second set of biometric data; (b) determining a second encoded key by applying an “exclusive or” operation between the set of reference biometric data and the second set of biometric data; (c) decoding said second key; and (d) deciding whether the second set of biometric data corresponds to the first set of biometric data by comparing the information relating to the first key with the second key; wherein said first and second sets of biometric data are expressed in a multidimensional coordinate system of N dimensions, N being an integer greater than or equal to 2, the biometric data along at least one of said N dimensions being obtained by a plurality of processes applied in relation to said biological part; and wherein said first encoded key is obtained by applying an encoding transforming an initial word of a predetermined length into a word coded in said multidimensional coordinate system.