Abstract: A method and system for testing the cryptographic integrity of data m comprises at least the following elements: a module transmitting a message M, said module comprising a memory for storing the parameters used to execute the steps of the method, such as the key, the public data, a transmission medium, a receiver module also comprising storage means for storing at least the same parameters as in transmission. The system may comprise storage means for storing confidential data such as the secret keys, a processor suitable for executing the steps.

Abstract: The present invention relates to a secure method for reconstructing a reference measurement of a confidential datum on the basis of a noisy measurement of this datum. The method proposes a phase of enrolling a reference datum w having n digits, comprising at least the following steps: selecting an error correcting code C of a length L greater than n; generating an extended datum we by increasing the size of the reference datum w with L-n digits making up a key Sk; choosing a word c of the selected error correcting code C; generating the reconstruction datum s by combining the said word c with the said extended datum we. The invention applies notably to the authentication of individuals and to the generation of cryptographic keys, using for example biometric data or the physical characteristics intrinsic to an electronic component.

Abstract: A method and system for testing the cryptographic integrity of data m comprises at least the following elements: a module transmitting a message M, said module comprising a memory for storing the parameters used to execute the steps of the method, such as the key, the public data, a transmission medium, a receiver module also comprising storage means for storing at least the same parameters as in transmission. The system may comprise storage means for storing confidential data such as the secret keys, a processor suitable for executing the steps.

Abstract: System and process for audio authentication of an individual or speaker including a processor for decomposing an audio signal received at the sensor into vectors representative of the speaker to be authenticated for transforming the super-vector V of the speaker resulting from the concatenation of the vectors associated with the said speaker into binary data 1001100 . . . 0 taking as an input the mean super-vector M resulting from the mean super-vector, and comparing the super-vector V of the speaker with the mean super-vector M, the said binary data thus obtained being transmitted to a module for extracting the speaker authentication taking as an input the public keys Kpub(l) in order to authenticate the speaker and/or to generate a cryptographic key associated with the speaker.

Abstract: The present invention relates to a secure method for reconstructing a reference measurement of a confidential datum on the basis of a noisy measurement of this datum. The method proposes a phase of enrolling a reference datum w having n digits, comprising at least the following steps: selecting an error correcting code C of a length L greater than n; generating an extended datum we by increasing the size of the reference datum w with L-n digits making up a key Sk; choosing a word c of the selected error correcting code C; generating the reconstruction datum s by combining the said word c with the said extended datum we. The invention applies notably to the authentication of individuals and to the generation of cryptographic keys, using for example biometric data or the physical characteristics intrinsic to an electronic component.

Abstract: System and process for audio authentication of an individual or speaker including a processor for decomposing an audio signal received at the sensor into vectors representative of the speaker to be authenticated for transforming the super-vector V of the speaker resulting from the concatenation of the vectors associated with the said speaker into binary data 1001100 . . . 0 taking as an input the mean super-vector M resulting from the mean super-vector, and comparing the super-vector V of the speaker with the mean super-vector M, the said binary data thus obtained being transmitted to a module for extracting the speaker authentication taking as an input the public keys Kpub(1) in order to authenticate the speaker and/or to generate a cryptographic key associated with the speaker.