A policy-based methodology for security evaluation: A Security Metric for Public Key Infrastructures.

Valentina Casola Antonino Mazzeo Nicola Mazzocca Valeria Vittorini A policy-based methodology for security evaluation: A Security Metric for Public Key Infrastructures. 197-229 2007 15 Journal of Computer Security 2 http://iospress.metapress.com/openurl.asp?genre=article&issn=0926-227X&volume=15&issue=2&spage=197 db/journals/jcs/jcs15.html#CasolaMMV07