| Patent application number | Description | Published |
|---|
| 20090279693 | METHOD AND A DEVICE FOR GENERATING A PSEUDORANDOM STRING - The invention relates to a method of generating a pseudorandom string of terms belonging to a finite body K of cardinal q≧2 intended to be used in a cryptography procedure, said method comprising the iterative calculation of a system (Γ) of m polynomials with n variables belonging to the finite body K. According to the invention, the coefficients of these m polynomials are regenerated at each iteration. The invention also relates to pseudorandom string generator intended to implement this method. | 11-12-2009 |
| 20090319590 | Method and device for generating a psuedorandom sequence - A method of generating a pseudorandom sequence of terms belonging to a finite body K of cardinal q≧2 intended to be used in a cryptographic procedure, said method comprising the iterative calculation, from an initialization n-tuple X | 12-24-2009 |
| 20100161988 | METHOD OF AUTHENTICATING AN ENTITY BY A VERIFICATION ENTITY - A method of authenticating an entity by a verification entity, said entities sharing a pair of secret keys X and Y. According to the invention said secret keys X and Y are n×m (n, m>1) binary matrices, said method comprising steps repeated r times (r≧1) of:
| 06-24-2010 |
| 20100185851 | EFFICIENT AND SECURE CRYPTOGRAPHIC COUPON RELOADING - A system and a method for cryptographic coupon reloading are provided for, wherein a coupon comprises, on one hand, a pseudo-random number r | 07-22-2010 |
| 20100199090 | Secure Communication Between An Electronic Label And A Reader - The invention relates to a secure communication between an electronic label (A) and a reader (B), in particular for the authentication of the label by the reader, in which: the reader ( | 08-05-2010 |
| 20100228986 | AUTHENTICATION SYSTEM AND METHOD USING ELECTRONIC TAGS - An authentication method of a prover device by a verifier device by means of cryptographic coupons is provided for, wherein a coupon comprises, on one hand, a pseudo-random number r | 09-09-2010 |
| 20100281336 | METHOD AND ENTITY FOR PROBABILISTIC SYMMETRICAL ENCRYPTION - The invention relates to a method of probabilistic symmetric encryption of a plaintext message element with the aid of a secret key that can be represented in the form of a matrix. It comprises an operation of encrypting the plaintext message element, with the aid of the matrix parametrized by a random vector, so as to obtain an encrypted message element coupled to the random vector. Furthermore, there is envisaged a step of encoding the plaintext message element as a code word with the aid of an error correcting code having a given correction capacity and a step of adding a noise vector. The error correcting code and the noise vector are adapted so that the Hamming weight of the noise vector is less than or equal to the correction capacity of the correcting code. | 11-04-2010 |
| 20110249815 | METHOD OF IMPLEMENTING A BLOCK CIPHER ALGORITHM - A method is provided of implementing a block cipher algorithm by a device storing a fixed initialization datum, comprising, before execution of a first iteration of the algorithm in the course of a session, a step of determining a modified initialization datum by way of a determined function supplied as input with the fixed initialization datum and a state value specific to the session, the state value being stored in the device, said modified initialization datum being usable to implement the first iteration of the algorithm. | 10-13-2011 |
