Abstract: The invention is a method for securing a digital document. An initial version of the digital document contains a set of data. The method comprises: generating a link value by applying a preset function to a subset of the set of data, allocating the link value to a target data belonging to the set of data and storing an entry comprising the target data in a secure storage unit, the target data being reachable in the secure storage unit through the link value, the secure storage unit being configured to use access rules for authorizing or denying a request initiated by a user and aiming at accessing the target data comprised in said entry, generating an updated version of the digital document by removing the target data from the initial version of the digital document.

Abstract: A method for securing a digital document comprising first and second types of data, where a set of data of the second type is previously identified in an initial version of the document. For each data of the second type, an identifier is allocated to the data and an entry comprising the data is stored in a secure storage unit. The identifier comprises a display value and a link value. The data is reachable in the secure storage unit through the link value. The secure storage unit is configured to use access rules for authorizing or denying a request initiated by a user for accessing data of the second type contained in an entry of the secure storage unit. An updated version of the digital document is generated by replacing each data of the second type by its allocated identifier in the initial version of the digital document.