High Quality Content by WIKIPEDIA articles! In Information security, computational trust is the generation of trusted authorities or user trust through cryptography. In centralised systems, security is typically based on the authenticated identity of external parties. Rigid authentication mechanisms, such as Public Key Infrastructures (PKIs) or Kerberos have allowed this model to be extended to distributed systems within a few closely collaborating domains or within a single administrative domain. During the last years, Computer Science has moved from centralised computer systems to distributed computing. This evolution has several implications on the security models, the policies and the mechanisms needed to protect users’ information and resources in an increasingly interconnected computing infrastructure. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в целом, и в информационном сетевом ресурсе "Википедия" в частности....