2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/32402Directed signature is the solution of such problems when the signed message contains information sensitive to the signature receiver. Generally, in many application of directed signature, the signer is generally a single person. But when the message is on behalf of an organization, a valid sensitive message may require the approval of several people. Threshold signature schemes are used to solve these problems. This paper presents a threshold directed signature scheme.10 Pages, No figuresCryptography and SecurityK.6.M.,K.6.5,G.1.0,E.3,D.4.6text