METODO PARA CIFRAR Y DESCIFRAR INFORMACION

摘要

It comprises: i) ciphering information by means of a public key generated by a Trusted Third Party (T); and ii) deciphering, a user or member (U 1 , U 2 ,..., U t) of a group of authorised users (U), said ciphered information by means of a private key generated by said Trusted Third Party (T). It further comprises generating, by said Trusted Third Party (T) said public key as a common public key and a plurality of different private keys, one for each of said users (U 1 , U 2 ,..., U t ), all of said plurality of different private keys being associated to said common public key and usable for said deciphering of step ii).