| 摘要 |
A method and system that generates a secret from individual's biometric information, such as voice, handwriting and fingeprint. It extracts a feature vector from the captured biometric data. The feature vector is then transformed into a codewood, and the codeword is used to construct the secret. A one-way hash of the secret is stored. Only if a user generates a new secret that has the same hash value as that stored will the user be confirmed. To keep pace with the gradual change of the measured biometric features, the a secret can be updated adaptively. The secret may be an encryption key.
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