Secure protection of biometric templates
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United States of America Patent
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Apr 30, 2013
Grant Date -
Sep 11, 2008
app pub date -
Sep 11, 2006
filing date -
Sep 29, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
This invention relates to methods and devices for verifying the identity of a person based on a sequence of feature components extracted from a biometric sample. Thereafter, the feature components are quantized and assigned a data bit sequence in such a way that adjacent quantization intervals have a Hamming distance of 1. The data bit sequences are concatenated into a bit string, and said bit string is combined with a helper data set by using an exclusive disjunction (XOR) operation into a codeword. Finally, the codeword is decoded into a secret V and a secret S is matched with the secret V.
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