One of the major challenges facing the security community today is how to prevent DE. DE is the unauthorized release of information from a computer system or network of systems. Current methods attempt to address this issue by controlling the information that is released over the Internet. In this paper, we present a host-level discretionary access control method that focuses on exfiltration vi...

While mobile handheld devices provide productivity benefits, they also pose new risks. User authentication is the best safeguard against the risk of unauthorized use and access to a device’s contents. This paper describes two novel types of smart card with unconventional form factors, designed to take advantage of common interfaces built into many current handheld devices.

Secret sharing is a cryptographic primitive, which is used to distribute a secret among participants in such a way that an authorized subset of participants can uniquely reconstruct the secret and an unauthorized subset can get no information about the secret. It is a fundamental method used in secure multiparty computations, where various distrusted participants cooperate and conduct computati...

Traditional access control models often assume that the entity enforcing access control policies is also the owner of data and resources. This assumption no longer holds when data is outsourced to a third-party storage provider, such as the cloud. Existing access control solutions mainly focus on preserving confidentiality of stored data from unauthorized access and the storage provider. Howeve...

JSTOR is a not-for-profit online library containing a full back-run of digitized versions of a large number of academic journals. In order to help defray costs for maintaining the archive, subscribing institutions (such as libraries and universities) pay a fee to enable their users to access it. However, in order to make this access easy for authorized users—and to avoid requiring changes to th...

Femtocells can be employed in cellular systems to enhance the indoor coverage, especially in the areas with high capacity growing demands and high traffic rates. In this paper, we propose an efficient resource utilization protocol, named as shared access protocol (SAP), to enable the unauthorized macrocell user equipment to communicate with partially closed-access femtocell base station to impr...