Purdue Videos

Coach Painter offers his thoughts on Boilermaker basketball as the season is underway.

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Purdue University agricultural economist, Dr. Larry DeBoer received the Frederick L. Hovde award at the recent Indiana Farm Bureau State Convention. Dean of Agriculture, Dr. Jay Akridge says DeBoer was recognized for his work in helping Hoosiers better understand tax and government budgeting issues. “This award is focused on service to the people of rural Indiana and I think by lifting up people, like Larry who have made a career of serving rural residents of our state, it just puts a spotlight on that whole part of our Purdue mission and make sure it’s going to be a focal point for us going forward,” said Dean Akridge. The Hovde Award is named after Purdue’s 7th president, who served from 1946 to 1971, the Purdue Dean of Agriculture says his legacy lives on in the award that bears his name. “And I think one part of that legacy was never forgetting our land grant mission of service to the people of Indiana, and education particularly was a focus of Dr. Hovde in terms of making sure Purdue provided opportunities for educating rural Indiana citizens,” Akridge said. “And I think that’s what this award celebrates.” AUDIO: Dean Jay Akridge, Purdue University (1:30 MP3)

The Purdue Boilermakers beat the Indiana Hoosiers 38-21 on Saturday and retained the Old Oaken Bucket. For more BigTenNetwork.com Ranked 4.00 / 5 | 6 views | 0 comments Click here to watch the video (04:03) Submitted By: CBS Tags: Purdue Vs. Indiana Highlights Highlights Categories: Sports

Social and communication networks are formed by entities (such as individuals or computer hosts) and their connections (which may be contacts, relationships, or flows of information). Such networks are analyzed to understand the influence of individuals in organizations, the transmission of disease in communities, the operation of computer networks, among many other topics. While network data can now be recorded at unprecedented scale, releasing it can result in unacceptable disclosures about participants and their relationships. As a result, privacy concerns are severely constraining the dissemination of network data and disrupting the emerging field of network science. Our recent work investigates the properties of a network that can be accurately studied without threatening the privacy of individuals and their connections. We adopt the rigorous condition of differential privacy, and develop algorithms for releasing randomly perturbed statistics about the topology of a sensitive network. This talk will focus on two basic analysis tasks: the estimation of the degree distribution of a network and the study of small structural patterns that occur in a network (sometimes called motif analysis). We show that the degree distribution of a network can be very accurately estimated by a novel technique in which constraints are applied to the noisy output to improve utility. This technique is of general interest, and can be used to boost the accuracy of differentially private output in other tasks as well. We show that studying motifs is fundamentally harder, but can be done with acceptable accuracy if the privacy condition is relaxed.

Author: TechPurdue Keywords: Purdue Majors: Computers in Technology Added: November 16, 2009

We start with presenting motivation and goals for the Future Internet, and reviewing basics of trust in computing. The Pervasive Trust Foundation (PTF) for the Future Internet is proposed next. This includes presenting motivation for trust foundation for the Future Internet, showing placement of security services and mechanisms within the architecture, and trust considerations for security services. Inefficient operation of the PTF-based architecture is the main obstacle to making such architecture a reality. There are two classes of approaches that can reduce operational costs. First, inherent PTF properties result in automatic cost-saving. Second, additional cost-saving techniques --such as leveraging high-trust enclaves, or using enclave "insurers"-- can be used. The architectural principles presented here are a position statement, and their practical verification will require substantial research efforts.

Access control policies in healthcare domain define permissions for users to access different medical records. A Role Based Access Control (RBAC) mechanism allows management of privileges to medical records for users when they assume certain roles thus mitigating the threat of inside attacks. Such a threat emanates from unauthorized users. We can provide a selective combination of policies where sensitive records can be available only to a specific role, say the primary doctor, under Discretionary Access Control (DAC) whereby in turn he/she may share the record with other physicians for consultation after permission from the patient. This mechanism allows not only a better compliance of principle of least privilege but also helps to mitigate the threat of authorized insiders disclosing sensitive information. Our research is being prototyped on the Policy Machine (PM) developed by the National Institute of Standards and Technology (NIST). PM allows integration and co-existence of multiple policies. Currently, we are expanding the capabilities of PM to provide a flexible healthcare access control policy which has the benefits of context awareness and discretionary access. We will present the newly implemented temporal RBAC model on PM and describe initial capabilities for secure management of healthcare data.

Infrastructureless and decentralized communication substrates such as mobile ad hoc networks and peer-to-peer systems enable setting up communication services beyond borders of contemporary wired or cellular client/server systems. Yet, due to their specific characteristics like wireless multihop data transmission and lack of central trusted instances, infrastructureless and decentralized networks are also beyond the protection of contemporary security mechanisms. This especially requires consideration in possible first responder or military application scenarios. Various new threats targeting each layer of the ISO/OSI model have been identified. Central questions regarding security include how to deal with misbehavior and how to protect information in networks without well-defined borders, consisting of devices, services, and users from multiple administrative domains. In this talk we present possible solutions for excluding misbehaving nodes from infrastructureless networks to recover the availability of the network in presence of attacks. We further present mathematical tools for governing cooperative decision processes without central trusted instances as basis for security objectives such as authentication and access control in decentralized systems. We show evaluation results based on analytical models as well as simulation and testbed studies and highlight general challenges regarding the evaluation of protocols and algorithms for infrastructureless decentralized communication networks.

Given the proliferation of malware, the integrity of embedded communication systems is becoming a growing concern. Recent compromises to systems such as ATMs and network switches and routers provide evidence of the potential security problems of embedded communication systems. Trusted communication channels that pass sensitive information should only be established after the integrity of the remote system can be assured. Security hardware, such as the Trusted Computing Group’s (TCG’s) Trusted Platform Module (TPM) provides a mechanism to measure and authenticate the integrity of individual machines. This device can be readily found in many laptops today, however we are unaware of its use as a mechanism for providing or denying communication access to services based on the integrity of remote systems. In this work, we propose PlugNPlay Trust, an integrity framework which is a drop-in solution for providing a hardware root of trust for embedded applications. The PlugNPlay Trust design exploits the static nature of embedded communication systems and independently provides remote attestation and identity verification for the host application using the TPM. This framework, coupled with the attestation and dynamic firewall exception services we authored, enables remote parties to confirm the integrity of embedded communication systems, thereby limiting the effects and the proliferation of malware in compromised systems. Although there are preexisting technologies for interfacing with the TPM directly, we implemented the first prototype for allowing or denying access to networked services based on the trustworthiness of a remote system. The PlugNPlay framework simplifies the integration of existing TPM related tools and provides a ready to use platform for trusted computing research.

A season preview for the Big TenAuthor: CollegeSportsDaily Tags: Northwestern Purdue Illinois Posted: 10 July 2009 Rating: 0.0 Votes: 0