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University of California
(1028 results)-
White Papers
Low Bandwidth Call Trace Logging for Sensor Networks
February 16, 2009, 12:00am PST
Call traces can provide detailed insight into the operation of distributed embedded systems. Developers inspect traces to understand and debug systems using manual and automatic techniques such as...
Provided by University of California
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White Papers
Compressive Oversampling for Robust Data Transmission in Sensor Networks
August 1, 2009, 12:00am PDT
Data loss in wireless sensing applications is inevitable and while there have been many attempts at coping with this issue, recent developments in the area of Compressive Sensing (CS) provide a...
Provided by University of California
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White Papers
The P2P War: Someone Is Monitoring Your Activities!
January 1, 2011, 12:00am PST
In an effort to prosecute P2P users, RIAA and MPAA have reportedly started to create decoy users: they participate in P2P networks in order to identify illegal sharing of content. This has...
Provided by University of California
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White Papers
Aliased Register Allocation for Straight-Line Programs Is NP-Complete
May 27, 2008, 12:00am PDT
Register allocation is NP-complete in general but can be solved in linear time for straight-line programs where each variable has at most one definition point if the bank of registers is...
Provided by University of California
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White Papers
Is Our Monetary Structure A Systemic Cause For Financial Instability? Evidence And Remedies From Nature
April 1, 2010, 12:00am PDT
Fundamental laws govern all complex flow systems, including natural ecosystems, economic and financial systems. Natural ecosystems are practical exemplars of sustainability: enduring, vital,...
Provided by University of California
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White Papers
Security Protocols: Principles and Calculi
June 12, 2007, 12:00am PDT
This paper is a basic introduction to some of the main themes in the design and analysis of security protocols. It includes a brief explanation of the principles of protocol design and of a...
Provided by University of California
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White Papers
Models and Proofs of Protocol Security
April 14, 2009, 12:00am PDT
As computer security has become a broad, rich field, rigorous models have been developed for many policies and mechanisms. Sometimes these models have been the subject of formal proofs, even...
Provided by University of California
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White Papers
Policies and Proofs for Code Auditing
June 26, 2007, 12:00am PDT
Both proofs and trust relations play a role in security decisions, in particular in determining whether to execute a piece of code. The authors have developed a language, called BCIC, for policies...
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White Papers
IPv4 Address Allocation and the BGP Routing Table Evolution
January 1, 2011, 12:00am PST
The IP address consumption and the global routing table size are two of the vital parameters of the Internet growth. This paper quantitatively characterize the IPv4 ad-dress allocations made over...
Provided by University of California
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White Papers
A Taxonomy of Biologically Inspired Research in Computer Networking
May 15, 2008, 12:00am PDT
The natural world is enormous, dynamic, incredibly diverse, and highly complex. Despite the inherent challenges of surviving in such a world, biological organisms evolve, self-organize,...
Provided by University of California
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White Papers
Proximity Breeds Danger: Emerging Threats in Metro-Area Wireless Networks
June 27, 2007, 12:00am PDT
The growing popularity of wireless networks and mobile devices is starting to attract unwanted attention especially as potential targets for malicious activities reach critical mass. In this...
Provided by University of California
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White Papers
Achieving Edge-Based Fairness in a Multi-Hop Environment
October 13, 2007, 12:00am PDT
The authors propose efficient buffer-accounting algorithms that achieve edge-based max-min and proportional fairness in a Multi-Hop (MH), multi-bottleneck network environment by extending and...
Provided by University of California
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White Papers
Path-Based Inductive Synthesis for Program Inversion
December 4, 2010, 12:00am PST
In this paper, the authors investigate the problem of semi-automated inversion of imperative programs, which has the potential to make it much easier and less error prone to write programs that...
Provided by University of California
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White Papers
Noise Injection for Search Privacy Protection
June 11, 2009, 12:00am PDT
To protect user privacy in the search engine context, most current approaches, such as private information retrieval and privacy preserving data mining, require a server-side deployment, thus...
Provided by University of California
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White Papers
Distributed Authentication for Low-Cost Wireless Networks
March 27, 2008, 12:00am PDT
Cost is one of the key challenges facing the deployment of wireless networks. Though 802.11-based networks have shown that costly, licensed spectrum is not always necessary, the costs of other...
Provided by University of California
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White Papers
The Java 5 Generics Compromise Orthogonality to Keep Compatibility
September 23, 2008, 12:00am PDT
In response to a long-lasting anticipation by the Java community, version 1.5 of the Java 2 platform - referred to as Java 5 - introduced generic types and methods to the Java language. The Java 5...
Provided by University of California
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White Papers
Mitigating DoS Attacks on the Paging Channel by Efficient Encoding in Page Messages
August 26, 2009, 12:00am PDT
Paging is an important mechanism for network bandwidth efficiency and mobile terminal battery life. It has been widely adopted by mobile networks, such as cellular networks, WiMax, and Mobile IP....
Provided by University of California
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White Papers
Measuring Privacy Risk in Online Social Networks
August 26, 2009, 12:00am PDT
Measuring privacy risk in online social networks is a challenging task. One of the fundamental difficulties is quantifying the amount of information revealed unintentionally. The authors present...
Provided by University of California
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White Papers
Exploiting Opportunistic Scheduling in Cellular Data Networks
October 9, 2008, 12:00am PDT
Third Generation (3G) cellular networks utilize time varying and location-dependent channel conditions to provide broadband services. They employ opportunistic scheduling to efficiently utilize...
Provided by University of California
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White Papers
Contour Maps: Monitoring and Diagnosis in Sensor Networks
January 1, 2011, 12:00am PST
Large-scale sensor networks impose energy and communication constraints, thus it is difficult to collect data from each individual sensor node and process it at the sink. In this paper, the...
Provided by University of California
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White Papers
Identifying Suspicious URLs: An Application of Large-Scale Online Learning
April 21, 2009, 12:00am PDT
This paper explores online learning approaches for detecting malicious Web sites (those involved in criminal scams) using lexical and host-based features of the associated URLs. The authors show...
Provided by University of California
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White Papers
The Heisenbot Uncertainty Problem: Challenges in Separating Bots From Chaff
April 6, 2008, 12:00am PDT
In this paper the authors highlight a number of challenges that arise in using crawling to measure the size, topology, and dynamism of distributed botnets. These challenges include traffic due to...
Provided by University of California
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White Papers
Measuring Online Service Availability Using Twitter
May 26, 2010, 12:00am PDT
Real-time micro-blogging services such as Twitter are widely recognized for their social dynamics - how they both encapsulate a social graph and propagate information across it. However, the...
Provided by University of California
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White Papers
Beamforming in Wireless Relay Networks
January 17, 2008, 12:00am PST
This paper is on relay beamforming in wireless networks, in which the receiver has perfect information of all channels and each relay knows its own channels. Instead of the commonly used total...
Provided by University of California
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White Papers
NOX: Towards an Operating System for Networks
July 1, 2008, 12:00am PDT
As anyone who has operated a large network can attest, enterprise networks are difficult to manage. That they have remained so despite significant commercial and academic efforts suggests the need...
Provided by University of California
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White Papers
EEFSim: Energy Efficiency Simulator
July 13, 2010, 12:00am PDT
Nowadays Cloud computing has emerged as one of the most promising computer paradigms. The idea of selling software as a service has promoted IT enterprises to bet for this new paradigm. Cloud...
Provided by University of California
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White Papers
Energy-Aware Server Provisioning and Load Dispatching for Connection-Intensive Internet Services
March 19, 2008, 12:00am PDT
Energy consumption in hosting Internet services is becoming a pressing issue as these services scale up. Dynamic server provisioning techniques are effective in turning off unnecessary servers to...
Provided by University of California
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White Papers
Dynamic Right-Sizing in TCP
January 1, 2011, 12:00am PST
With the widespread arrival of bandwidth-intensive applications such as bulk-data transfer, multi-media web streaming and computational grids for high-performance computing, networking performance...
Provided by University of California
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White Papers
An Ad Hoc Network With Mobile Backbones
January 1, 2011, 12:00am PST
A Mobile Ad Hoc NETwork (MANET) is usually assumed to be homogeneous, where each mobile node shares the same radio capacity. However, a homogeneous ad hoc network suffers from poor scalability....
Provided by University of California
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White Papers
FAIR: Fuzzy-Based Aggregation Providing In-Network Resilience for Real-Time Wireless Sensor Networks
January 8, 2009, 12:00am PST
This work introduces FAIR, a novel framework for Fuzzy-based Aggregation providing In-network Resilience for Wireless Sensor Networks. FAIR addresses the possibility of malicious aggregator nodes...
Provided by University of California
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White Papers
Privacy-Preserving Querying in Sensor Networks
May 13, 2009, 12:00am PDT
Wireless Sensor Networks (WSNs) provide sensing and monitoring services by means of many tiny autonomous devices equipped with wireless radio transceivers. As WSNs are deployed on a large-scale...
Provided by University of California
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White Papers
Mobility Prediction and Routing in Ad Hoc Wireless Networks
January 1, 2011, 12:00am PST
Wireless networks allow a more flexible model of communication than traditional networks since the user is not limited to a fixed physical location. Unlike cellular wireless networks, an ad hoc...
Provided by University of California
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White Papers
ChunkCast: An Anycast Service for Large Content Distribution
January 1, 2011, 12:00am PST
Fast and efficient large content distribution is a challenge in the Internet due to its high traffic volume. In this paper, the authors propose ChunkCast, an anycast service that optimizes large...
Provided by University of California
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White Papers
Multi-Recipient Encryption Schemes: Efficient Constructions and Their Security
November 29, 2007, 12:00am PST
This paper proposes several new schemes which allow a sender to send encrypted messages to multiple recipients more efficiently (in terms of bandwidth and computation) than by using a standard...
Provided by University of California
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White Papers
Deterministic and Efficiently Searchable Encryption
December 17, 2007, 12:00am PST
The authors present as-strong-as-possible definitions of privacy, and constructions achieving them, for public-key encryption schemes where the encryption algorithm is deterministic. They obtain...
Provided by University of California
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White Papers
Chord: A Scalable Peer-to-Peer Lookup Protocol for Internet Applications
January 1, 2011, 12:00am PST
A fundamental problem that confronts peer-to-peer applications is the efficient location of the node that stores a desired data item. This paper presents Chord, a distributed lookup protocol that...
Provided by University of California
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White Papers
Efficient Replica Maintenance for Distributed Storage Systems
January 1, 2011, 12:00am PST
This paper considers replication strategies for storage systems that aggregate the disks of many nodes spread over the Internet. Maintaining replication in such systems can be prohibitively...
Provided by University of California
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White Papers
Gone Rogue: An Analysis of Rogue Security Software Campaigns
November 3, 2009, 12:00am PST
In the past few years, Internet miscreants have developed a number of techniques to defraud and make a hefty profit out of their unsuspecting victims. A troubling, recent example of this trend is...
Provided by University of California
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White Papers
DBTaint: Cross-Application Information Flow Tracking Via Databases
May 9, 2010, 12:00am PDT
Information flow tracking has been an effective approach for identifying malicious input and detecting software vulnerabilities. However, most current schemes can only track data within a single...
Provided by University of California
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White Papers
Flow-Sensitive Pointer Analysis for Millions of Lines of Code
January 9, 2011, 12:00am PST
Many program analyses benefit, both in precision and performance, from precise pointer analysis. An important dimension of pointer analysis precision is flow-sensitivity, which has been shown to...
Provided by University of California
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White Papers
LiFSBrowse: A Visual, User Environment for the Linking File System
August 1, 2007, 12:00am PDT
The Linking File System introduces a new storage paradigm for enhanced user productivity through relationships between files, yet it opens up new challenges in usability. LiFSBrowse is a GUI for...
Provided by University of California
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White Papers
The Impact of Failures on Large Distributed Storage Systems
August 1, 2007, 12:00am PDT
Distributed storage systems that can support high throughput and capacities in the petabytes range, are being built using standard Off the Shelf Components disks and networks to lower costs. Both...
Provided by University of California
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White Papers
RADOS: A Fast, Scalable, and Reliable Storage Service for Petabyte-Scale Storage Clusters
November 10, 2007, 12:00am PST
Brick and object-based storage architectures have emerged as a means of improving the scalability of storage clusters. However, existing systems continue to treat storage nodes as passive devices,...
Provided by University of California
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White Papers
Spyglass: Fast, Scalable Metadata Search for Large-Scale Storage Systems
January 27, 2009, 12:00am PST
The scale of today's storage systems has made it increasingly difficult to find and manage files. To address this, the authors have developed Spyglass, a file metadata search system that is...
Provided by University of California
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White Papers
Sparse Indexing: Large Scale, Inline Deduplication Using Sampling and Locality
January 28, 2009, 12:00am PST
The authors present sparse indexing, a technique that uses sampling and exploits the inherent locality within backup streams to solve for large-scale backup (e.g., hundreds of terabytes) the...
Provided by University of California
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White Papers
Using Storage Class Memories to Increase the Reliability of Two-Dimensional RAID Arrays
April 1, 2009, 12:00am PDT
Two-dimensional RAID arrays maintain separate row and column parities for all their disks. Depending on their organization, they can tolerate between two and three concurrent disk failures without...
Provided by University of California
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White Papers
Copernicus: A Scalable, High-Performance Semantic File System
October 1, 2009, 12:00am PDT
Hierarchical file systems do not effectively meet the needs of users at the petabyte-scale. Users need dynamic, search-based file access in order to properly manage and use their growing sea of...
Provided by University of California
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White Papers
Security Aware Partitioning for Efficient File System Search
February 25, 2010, 12:00am PST
Index partitioning techniques - where indexes are broken into multiple distinct sub-indexes - are a proven way to improve metadata search speeds and scalability for large file systems, permitting...
Provided by University of California
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White Papers
Data Management and Layout for Shingled Magnetic Recording
May 15, 2011, 12:00am PDT
Ultimately the performance and success of a shingled write disk will be determined by more than the physical hardware realized, but will depend on the data layouts employed, the workloads...
Provided by University of California
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White Papers
Reliable and Randomized Data Distribution Strategies for Large Scale Storage Systems
August 24, 2011, 12:00am PDT
The ever-growing amount of data requires highly scalable storage solutions. The most flexible approach is to use storage pools that can be expanded and scaled down by adding or removing storage...
Provided by University of California
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White Papers
Examining Energy Use in Heterogeneous Archival Storage Systems
June 10, 2010, 12:00am PDT
Controlling energy usage in data centers, and storage in particular, continues to rise in importance. Many systems and models have examined energy efficiency through intelligent spin-down of disks...
Provided by University of California
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White Papers
Semantic Data Placement for Power Management in Archival Storage
November 10, 2010, 12:00am PST
Power is the greatest lifetime cost in an archival system, and, as decreasing costs make disks more attractive than tapes, spinning disks account for the majority of power drawn. To reduce this...
Provided by University of California
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White Papers
Analysis of Workload Behavior in Scientific and Historical Long-Term Data Repositories
March 1, 2011, 12:00am PST
The scope of archival systems is expanding beyond cheap tertiary storage: scientific and medical data is increasingly digital, and the public has a growing desire to digitally record their...
Provided by University of California
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White Papers
Using Storage Class Memory for Archives With DAWN, a Durable Array of Wimpy Nodes
October 1, 2011, 12:00am PDT
The long life and low usage of archival data make cost considerations paramount. Today, most archival storage architectures depend on magnetic or optical-media such as tape and disk because they...
Provided by University of California
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White Papers
Scalable Full-Text Search for Petascale File Systems
November 17, 2008, 12:00am PST
As file system capacities reach the petascale, it is becoming increasingly difficult for users to organize, find, and manage their data. File system search has the potential to greatly improve how...
Provided by University of California
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White Papers
Logan: Automatic Management for Evolvable, Large-Scale, Archival Storage
November 16, 2008, 12:00am PST
Archival storage systems designed to preserve scientific data, business data, and consumer data must maintain and safeguard tens to hundreds of petabytes of data on tens of thousands of media for...
Provided by University of California
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White Papers
Measurement and Analysis of Large-Scale Network File System Workloads
April 30, 2008, 12:00am PDT
In this paper, the authors present the analysis of two large-scale network file system workloads. They measured CIFS traffic for two enterprise-class file servers deployed in the NetApp data...
Provided by University of California
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White Papers
Searching and Navigating Petabyte-Scale File Systems Based on Facets
November 12, 2007, 12:00am PST
As users interact with file systems of ever increasing size, it is becoming more difficult for them to familiarize themselves with the entire contents of the file system. In petabyte-scale...
Provided by University of California
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White Papers
Scalable Security for Petascale Parallel File Systems
November 16, 2007, 12:00am PST
Petascale, high-performance file systems often hold sensitive data and thus require security, but authentication and authorization can dramatically reduce performance. Existing security solutions...
Provided by University of California
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White Papers
Secure Cooperative Sharing of JavaScript, Browser, and Physical Resources
May 1, 2010, 12:00am PDT
For better application-level controls on mashups, they advocate extending the Single Origin Policy and associated primitives to support a cooperative model that allows applications to express...
Provided by University of California
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White Papers
The Emperor's New APIs: On the (In)Secure Usage of New Client-Side Primitives
May 10, 2010, 12:00am PDT
Several new browser primitives have been proposed to meet the demands of application interactivity while enabling security. To investigate whether applications consistently use these primitives...
Provided by University of California
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White Papers
Fingerprinting Information in JavaScript Implementations
May 12, 2011, 12:00am PDT
To date, many attempts have been made to fingerprint users on the web. These fingerprints allow browsing sessions to be linked together and possibly even tied to a user's identity. They can be...
Provided by University of California
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White Papers
Analyzing the Crossdomain Policies of Flash Applications
May 12, 2011, 12:00am PDT
Adobe Flash is a rich Internet application platform. Flash applications are often deployed to the Web; The Flash Player plugin is installed on a large fraction of all Web connected PCs. Flash...
Provided by University of California
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White Papers
Matched Public PUF: Ultra Low Energy Security Platform
June 25, 2011, 12:00am PDT
Hardware-based Physically Unclonable Functions (PUFs) leverage intrinsic process variation of modern integrated circuits to provide interesting security solutions but either induce high storage...
Provided by University of California
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White Papers
Securing Netlist-Level FPGA Design Through Exploiting Process Variation and Degradation
February 24, 2011, 12:00am PST
The continuously widening gap between the Non-Recurring Engineering (NRE) and Recurring Engineering (RE) costs of producing Integrated Circuit (IC) products in the past few decades gives high...
Provided by University of California
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White Papers
Nanotechnology-Based Trusted Remote Sensing
December 18, 2011, 12:00am PST
The authors present a new nanotechnology PPUF-based architecture for trusted remote sensing. Current public physical unclonable function designs encompass complex circuits requiring high...
Provided by University of California
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White Papers
Medical Diagnostic-Based Sensor Selection
December 18, 2011, 12:00am PST
Wearable sensing systems have facilitated a variety of applications in Wireless Health. Due to the considerable number of sensors and their constant monitoring these systems are often expensive...
Provided by University of California
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White Papers
Robust Passive Hardware Metering
September 1, 2011, 12:00am PDT
Current hardware metering techniques, which use manifestational properties of gates for ID extraction, are weakened by the non-uniform effects of aging in conjunction with variations in...
Provided by University of California
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White Papers
Detecting Local Events Using Global Sensing
December 18, 2011, 12:00am PST
In order to create low power, low latency and reliable sensing systems, the authors propose a sensing strategy that identifies local events by the means of global measurements. They claim that...
Provided by University of California
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White Papers
Energy Efficient E-Textile Based Portable Keyboard
May 26, 2011, 12:00am PDT
The authors have created sensor architecture, data collection and processing techniques for an E-Textile wireless keyboard. They leverage the inherent properties of E-Textiles to produce optimized...
Provided by University of California
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White Papers
Inferring Channel Buffer Bounds Via Linear Programming
December 15, 2007, 12:00am PST
The authors present a static analysis for inferring the maximum amount of buffer space used by a program consisting of concurrently running processes communicating via buffered channels. They...
Provided by University of California
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White Papers
Security Primitives and Protocols for Ultra Low Power Sensor Systems
December 18, 2011, 12:00am PST
Security requirements in sensor systems include resiliency against physical and side-channel attacks, low energy for communication, storage, and computation, and the ability to realize a variety...
Provided by University of California
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White Papers
Lazy Annotation for Program Testing and Verification
April 15, 2010, 12:00am PDT
The authors describe an interpolant-based approach to test generation and model checking for sequential programs. The method generates Floyd/Hoare style annotations of the program on demand, as a...
Provided by University of California
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White Papers
The Murky Issue of Changing Process Identity: Revising "Setuid Demystified"
May 13, 2008, 12:00am PDT
Dropping unneeded process privileges promotes security, but is notoriously error-prone due to confusing set id system calls with unclear semantics and subtle portability issues. To make things...
Provided by University of California
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White Papers
Defeating UCI: Building Stealthy and Malicious Hardware
March 7, 2011, 12:00am PST
In previous work Hicks et al. proposed a method called Unused Circuit Identification (UCI) for detecting malicious backdoors hidden in circuits at design time. The UCI algorithm essentially looks...
Provided by University of California
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White Papers
Phishing on Mobile Devices
May 12, 2011, 12:00am PDT
The authors assess the risk of phishing on mobile platforms. Mobile operating systems and browsers lack secure application iden-tity indicators, so the user cannot always identify whether a link...
Provided by University of California
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White Papers
Exploring the Relationship BetweenWeb Application Development Tools and Security
May 2, 2011, 12:00am PDT
How should software engineers choose which tools to use to develop secure web applications? Different developers have different opinions regarding which language, framework, or...
Provided by University of California
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White Papers
Tweakable Block Ciphers
September 2, 2010, 12:00am PDT
A common trend in applications of block ciphers over the past decades has been to employ block ciphers as one piece of a "Mode of operation" - possibly, a way to make a secure symmetric-key...
Provided by University of California
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White Papers
Sage: Hybrid Checking for Flexible Specifications
June 23, 2007, 12:00am PDT
Software systems typically contain large APIs that are informally specified and hence easily misused. This paper presents the Sage programming language, which is designed to enforce precise...
Provided by University of California
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White Papers
Types for Precise Thread Interference
October 7, 2011, 12:00am PDT
The potential for unexpected interference between threads makes multi-threaded programming notoriously difficult. Programmers use a variety of synchronization idioms such as locks and barriers to...
Provided by University of California
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