Encrypt PDFs transmitted and stored on servers

[wincelau]

In the case of a shared signature, the document is transmitted and stored on the server for a period chosen by the operator. The purpose of this feature is to store the pdf on the server in an encrypted way using a symmetric key. In order to process the server side operation, the symmetric key will be transmitted with each request. A non encrypted version of the document will not be stored on the server but only processed in RAM which will increase the confidentiality of the information contained in the documents.

Milestone(s) :

• Generation exchange of a symmetric key
• PDF encryption and decryption
• Option in config and in the interface to activate encryption