METHOD FOR UNAMBIGUOUS HASHING OF AMBIGUOUS BIOMETRIC DATA Russian patent published in 2012 - IPC H04L9/12 H04L9/32 G06F12/14 G06K9/00 

FIELD: information technology.

SUBSTANCE: based on each biometric parameter, the probability of "alien" data falling into a first interval of "own" data is determined; further all adjacent additional intervals are generated such that they yield probability of "alien" data which is close to probability of falling in the first "own" interval. The invention proposes to generate all intervals iteratively, while gradually increasing the first "own" interval up to the moment of the given approach of controlled probabilities of "alien" data falling into all selected intervals, and also up to the moment when probability of falling into most of the selected intervals approaches the given range of values of likely probabilities. The selected intervals are numbered. A biometric code sequence is generated from the numbers and that sequence is hashed.

EFFECT: uniformity of output hashing codes under the effect of "alien" biometric data and unambiguity of the output code under the effect of "own" biometric data.

5 cl, 5 dwg