ASEGURAMIENTO DE ARCHIVOS DIGITALES MEDIANTE UN SELLADO DE TIEMPO INDEPENDIENTE DE UNA AUTORIDAD CERTIFICADORA

Abstract

Trusted timestamping is the process used to certify that a computer document is not altered from the date it was registered; however, the current timestamping procedure depends on a certifying authority, which is subject to trust, and currently there have been trust problems that have caused various damages, ranging from identity theft to the spread of malware. Consequently, the objective of this paper is to create an alternative time-stamping scheme that allows digital files to be secured by means of a time stamp that does not depend on a certification authority. To do this, the study was based on an explanatory methodology in which three cases of trust problems were analyzed in order to overcome the trust problem by checking the integrity using the hash function. Based on the analysis, the possibility of using the alternative scheme when it is necessary to avoid trust problems since it excludes the certifying authorities from the time-stamping scheme.