@inproceedings{11cabfc87c204828968c5480181d23c8,
title = "A calculus of trust and its application to PKI and identity management",
abstract = "We introduce a formal semantics based calculus of trust that explicitly represents trust and quantifies the risk as-sociated with trust in public key infrastructure (PKI) and identity management (IdM). We then show by example how to formally represent trust relationships and quantitatively evaluate the risk associated with trust in public key certifi-cate chains. In the context of choosing a certificate chain, our research shows that the shortest chain need not be the most trustworthy, and that it may make sense to compare the trustworthiness of a potential chain against a thresh-old to govern acceptance, changing the problem to finding a chain with sufficiently high trustworthiness. Our calculus also shows how quantified trust relationships among CAs can be combined to achieve an overall trust assessment of an ofiered certificate.",
keywords = "Identity management, PKI, Risk assess-ment, Semantics of trust, Social networks, Trust modeling, Uncertainty",
author = "Jingwei Huang and David Nicol",
year = "2009",
month = apr,
day = "14",
doi = "10.1145/1527017.1527021",
language = "English (US)",
series = "ACM International Conference Proceeding Series",
publisher = "Association for Computing Machinery",
pages = "23--37",
editor = "Kent Seamons and Neal McBurnett and Tim Polk",
booktitle = "IDtrust 2009 - Proceedings of the 8th Symposium on Identity and Trust on the Internet",
address = "United States",
note = "8th Symposium on Identity and Trust on the Internet, IDtrust 2009 ; Conference date: 14-04-2009 Through 16-04-2009",
}