METODO PARA REALIZAR UNA FIRMA DIGITAL DE GRUPO

摘要

A method for creating a group digital signature, comprising : i) generating, by a Trusted Third Party ( T), a private key for each member ( F1,F 2,...., Ft ) of a group (G); ii) randomly selecting, by said Trusted Third Party (T), one member of said group (G) to act as a signer in charge of signing a digital document (M) on behalf of the group (G); iii) elaborating, by said signer, a group digital signature using his private key to sign said digital document (M); and iv) verifying said group digital signature; Wherein the method comprises generating, by said Trusted Third Party (T), a common public key for all of said group members (F 1,F 2, F t ) and using said common public key for performing said group digital signature verification of step iv).