Research Article
Khopesh - Contact Tracing Without Sacrificing Privacy
@INPROCEEDINGS{10.1007/978-3-030-63095-9_30, author={Friedrich Doku and Ethan Doku}, title={Khopesh - Contact Tracing Without Sacrificing Privacy}, proceedings={Security and Privacy in Communication Networks. 16th EAI International Conference, SecureComm 2020, Washington, DC, USA, October 21-23, 2020, Proceedings, Part II}, proceedings_a={SECURECOMM PART 2}, year={2020}, month={12}, keywords={Anonymity Privacy Communication}, doi={10.1007/978-3-030-63095-9_30} }- Friedrich Doku
Ethan Doku
Year: 2020
Khopesh - Contact Tracing Without Sacrificing Privacy
SECURECOMM PART 2
Springer
DOI: 10.1007/978-3-030-63095-9_30
Abstract
Secure contact tracing has proven challenging to implement, because even if a user’s contact data is encrypted, it is still difficult to hide the user’s metadata, which could be used to determine a user’s identity, furthermore, many existing contact tracing software implementations may require a user to send sensitive information such as location data to be processed by a central authority. Current systems such as DP-3T [9] and COVIDSafe [10] do not provide anonymity or much privacy protection. It is also not guaranteed that the data collected will not be used for marketing, commercial gain, or law enforcement.
Khopesh is a new secure contact tracing system that offers strong privacy guarantees, hiding both a user’s contacts and location data. This is made possible through the use of identity-based encryption, mix networks, and a novel technique called secure-contact contract signing, which enables groups of users to view each other’s reports.
