Meaningful electronic signatures based on an automatic indexing method.

Legal information certification and secured storage combined with documents electronic signature are of great interest when digital documents security and conservation are in concern,Therefore,these new and evolving technologies offer powerful abilities,such as identification,authentication and certification.The latter contribute to increase the global security of legal digital digital archives conservation and access.Howevwr,currently used cryptographic and hash coding concepts cannot intrinsically enclose cognitive information about boththe signer and the signed content.Indeed,an evolution of these technologies may be necessary to achieve full text researches within hundreds or thousands of electronically signed documents.This article aims at describing a possible model along with associated processes to create and make use of these new electronic signatures called "meaningful electronic signatures" as opposed to traditional electronic signatures based on bit computation.