Patent ID: 7929732
Filing Date: 2011-04-19
Classification: G06F

Abstract:
1. A biometric verification method using a first data medium storing in association, for at least one individual of a set of individuals: an identity relating to said individual, the result of adding a first word of an error-correcting code associated with said individual to a first digital string obtained from biometric data relating to said individual and at least two identifiers of distinct determined discriminating powers obtained by applying respective hashing functions to the first error-correcting code word; the method comprising the following steps relating to an individual of the set of individuals: obtaining biometric data relating to the individual; converting the biometric data into a second digital string; determining a second error-correcting code word corresponding substantially to adding the second digital string to the result of adding the first error-correcting code word to the first digital string stored on the first data medium in association with the identity relating to said individual; determining a desired level of discrimination; determining the identifier stored on the first data medium in association with the identity relating to said individual, having discriminating power corresponding substantially to the desired level of discrimination; applying to the second error-correcting code word the hashing function in application of which said determined identifier was obtained; and comparing the result of applying said hashing function to said second error-correcting code word with the determined identifier.