Abstract: Provided 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, and generating an updated version of the digital document by removing the target data from the initial version of the digital document.

Abstract: The invention is a method that comprises parsing first and second digital documents and identifying a first component into said first digital document and a second component into said second digital document, determining a first attribute based on a context of the first digital document, determining a second attribute based on a context of the second digital document, allocating the first attribute to the first component and the second attribute to the second component, and storing in a storage unit a first entry comprising a value of the first component and the first attribute and a second entry comprising a value of the second component and the second attribute. The method comprises conducting a correlation search between said first and second components using said first and second attributes, if the correlation has been found, generating a data reflecting the correlation.

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.

Abstract: A method for securely accessing a document containing a set of data comprises (a) detecting the existence of target data belonging to an enhanced version of the document and missing from the current version of the document, (b) generating a link value allocated to the target data by applying a preset function to a subset of said set of data, (c) retrieving metadata from a secure storage unit by using the link value and, using a message based on said metadata, proposing to the user to get the target data, (d) getting both agreement of the user and credentials of the user, (e) generating a request by using the link value and said credentials for retrieving the target data from the secure storage unit, (f) providing the user with the target data only if the secure storage unit successfully checked the compliance of the request with preset access rules.

Abstract: A method for securely accessing a document containing a set of data comprises (a) detecting the existence of target data belonging to an enhanced version of the document and missing from the current version of the document, (b) generating a link value allocated to the target data by applying a preset function to a subset of said set of data, (c) retrieving metadata from a secure storage unit by using the link value and, using a message based on said metadata, proposing to the user to get the target data, (d) getting both agreement of the user and credentials of the user, (e) generating a request by using the link value and said credentials for retrieving the target data from the secure storage unit, (f) providing the user with the target data only if the secure storage unit successfully checked the compliance of the request with preset access rules.