Sustainable authorization in enterprise workflow and authorized digital signature model [Kurumsal iş akişinda sürdürülebilir yetki denetimi ve yetkili sayisal imza modeli]

Authorization systems makes it possible that a user could only act in accordance with the permissions defined by the functional group it belongs. the authorization control mechanism employed in workflow became insufficient for the external enterprise processes as inter-agency correspondences. in this study,the sustainability of authorization in enterprise workflow,documents in circulation and long-term archives has been analyzed and demonstrated with petri net models. furthermore,a case study on digital signatures for the deficiencies of the enterprise authorization is presented. an authorized signature model is also proposed where authorization is employed in digital signature for the sustainability of authorization. the proposed solution is implemented using pairing based cryptography and analyses are provided.