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SIGMOD
2008
ACM
14 years 8 months ago
2008
ACM
A statistical database (StatDB) retrieves only aggregate results, as opposed to individual tuples. This paper investigates the construction of a privacy preserving StatDB that can...
SIGMOD
2004
ACM
14 years 8 months ago
2004
ACM
Encryption is a well established technology for protecting sensitive data. However, once encrypted, data can no longer be easily queried aside from exact matches. We present an or...
CHI
2010
ACM
14 years 2 months ago
2010
ACM
Click-based graphical passwords have been proposed as alternatives to text-based passwords, despite being potentially vulnerable to shoulder-surfing, where an attacker can learn p...
CCS
2010
ACM
14 years 2 months ago
2010
ACM
In distributed environments, statements from a number of principals, besides the central trusted party, may influence the derivations of authorization decisions. However, existin...
ACSAC
2009
IEEE
14 years 2 months ago
2009
IEEE
To protect privacy in large systems, users must be able to authenticate against a central server without disclosing their identity to the network. Private identification protocols ...