| 摘要 |
The invention relates to a method for encrypting an unscrambled message element (x) into an encrypted message element, related to a random vector (a, y), by means of a first sub-assembly of p encrypting users. In said method, the message element (x) is encoded (C(x)) through the use of an error-correcting code (C), is subsequently encrypted by means of a secret matrix (M) that is parametrized by the random vector (a) and converted into noise by a noise vector (£), characterized in that said method includes a step (E18) of obtaining the secret matrix (M), parametrized by the random vector and converted into noise, by adding secret user matrices that are specific to the p encrypting users, said secret user matrices being parametrized by the random vector and converted into noise by noise vectors specific to the p encrypting users. |
