Method For Providing a Secured Communication Between a User and an Entity
AssigneeSagem Securite
InventorHerve Chabanne
Life of this patent
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Abstract
The invention relates to a method for providing a secured communication between a user and an entity containing a first set of biometric data relating to the user. According to the invention, a second set of biometric data relating to the user is obtained. An error correction protocol is applied to the first set of biometric data and to the second set of biometric data in such a way that the resulting data is identical to a pre-determined level of probability. A secret amplification phase is implemented, in which a hasting function is applied to the resulting data in order to obtain a key which is common to the user and the entity.
Claims17
A method for providing a secured communication link between a user and an entity having a first set of biometric data relating to the user, the method comprising the following steps:
- obtaining, on the user side, a second set of biometric data relating to the user;
- implementing an information reconciliation phase between the user and the entity, in which an error-correction protocol is applied to the first set of biometric data and to the second set of biometric data, so that the resultant data, on the user side and the entity side, is identical with a predetermined probability level;
- and
- implementing a secret amplification phase in which a hashing function is applied to said resultant data to obtain a key common to the user and to the entity.
(canceled)
14-23. (canceled)
A system for having a secured communication link between a user and an entity having a first set of biometric data relating to the user, the system comprising:
- means for obtaining, on the user side, a second set of biometric data relating to the user;
- means for implementing an information reconciliation phase between the user and the entity, in which an error-correction protocol is applied to the first set of biometric data and to the second set of biometric data, so that the resultant data, on the user side and the entity side, is identical with a predetermined level of probability;
- and
- means for implementing a secret amplification phase in which a hashing function is applied to said resultant data to obtain a key that is common to the user and to the entity.
Dependencies are inferred from the claim text.