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Tel-Aviv University
(36 results)-
White Papers
Lesion Detection and Segmentation in Uterine Cervix Images Using an Arc-Level MRF
May 1, 2009, 12:00am PDT
This study develops a procedure for automatic extraction and segmentation of a class-specific object (or region) by learning class-specific boundaries. The paper presents and evaluates the method...
Provided by Tel-Aviv University
-
White Papers
Korset: Automated, Zero False-Alarm Intrusion Detection for Linux
September 18, 2009, 12:00am PDT
Host-based Intrusion Detection Systems traditionally compare observable data to pre-constructed models of normal behavior. Such models can either be automatically learnt during a training session,...
Provided by Tel-Aviv University
-
White Papers
Competitive Algorithms for Distributed Data Management
April 2, 2007, 12:00am PDT
This paper deals with the competitive analysis of algorithms for managing data in a distributed environment. The paper deals with the file allocation problem ([DF], [ML]), where copies of a file...
Provided by Tel-Aviv University
-
White Papers
Semantic Security Under Related-Key Attacks and Applications
October 25, 2010, 12:00am PDT
In a Related-Key Attack (RKA) an adversary attempts to break a cryptographic primitive by invoking the primitive with several secret keys which satisfy some known, or even chosen, relation. The...
Provided by Tel-Aviv University
-
White Papers
Attacks on RFID-Based Electronic Voting Systems
September 21, 2009, 12:00am PDT
Many secure systems, such as contactless credit cards and secure entrance systems are built with contactless smartcard RFID technologies. In many cases these systems are claimed to be secure based...
Provided by Tel-Aviv University
-
White Papers
On the Dynamics of IP Address Allocation and Availability of End-Hosts
November 10, 2010, 12:00am PST
The availability of end-hosts and their assigned routable IP addresses has impact on the ability to fight spammers and attackers, and on peer-to-peer application performance. Previous works study...
Provided by Tel-Aviv University
-
White Papers
Error Bounds for Repeat-Accumulate Codes Decoded Via Linear Programming
February 22, 2010, 12:00am PST
The authors examine regular and irregular Repeat-Accumulate (RA) codes with repetition degrees which are all even. For these codes and with a particular choice of an interleaver, they give an...
Provided by Tel-Aviv University
-
White Papers
Towards a Game Theoretic View of Secure Computation
March 17, 2011, 12:00am PDT
The authors demonstrate how Game Theoretic concepts and formalism can be used to capture cryptographic notions of security. In the restricted but indicative case of two-party protocols in the face...
Provided by Tel-Aviv University
-
White Papers
Key-Dependent Message Security: Generic Amplification and Completeness
February 4, 2011, 12:00am PST
The study of secure encryption scheme is perhaps the most central subject in cryptography. Since the discovery of semantic security till the formulation of CCA-security modern cryptography has...
Provided by Tel-Aviv University
-
White Papers
Why the Standard Data Processing Should Be Changed
March 8, 2007, 12:00am PST
The basic statistical methods of data representation did not change since their emergence. Their simplicity was dictated by the intricacies of computations in the before computers epoch. It turns...
Provided by Tel-Aviv University
-
White Papers
Public-Key Cryptographic Primitives Provably as Secure as Subset Sum
November 27, 2009, 12:00am PST
The authors propose a semantically-secure public-key encryption scheme whose security is polynomial-time equivalent to the hardness of solving random instances of the subset sum problem. The...
Provided by Tel-Aviv University
-
White Papers
Composable Security Analysis of OS Services
April 15, 2009, 12:00am PDT
The authors provide an analytical framework for analyzing basic integrity properties of file systems, namely the binding of files to filenames and writing capabilities. A salient feature of their...
Provided by Tel-Aviv University
-
White Papers
Universal Communication Over Modulo-Additive Channels With an Individual Noise Sequence
December 13, 2010, 12:00am PST
Which communication rates can be attained over an unknown channel where the relation between the input and output can be arbitrary? A channel where the output is any arbitrary (possibly...
Provided by Tel-Aviv University
-
White Papers
Delay and Redundancy in Lossless Source Coding
December 20, 2010, 12:00am PST
The penalty incurred by imposing a finite delay constraint in lossless source coding of a memoryless source is investigated. It is well known that for the so-called block-to-variable and...
Provided by Tel-Aviv University
-
White Papers
Joint Unitary Triangularization for MIMO Networks
May 14, 2011, 12:00am PDT
This paper considers communication networks where individual links can be described as MIMO channels. Unlike orthogonal modulation methods (such as the singular-value decomposition), the authors...
Provided by Tel-Aviv University
-
White Papers
Questions In Decision Theory
August 1, 2009, 12:00am PDT
This paper surveys a few major questions in the field of decision theory. It is argued that a re-examination of some of the fundamental concepts of the field may have important implications to...
Provided by Tel-Aviv University
-
White Papers
Cryptanalysis of KeeLoq Code-Hopping Using a Single FPGA
May 8, 2011, 12:00am PDT
The KeeLoq cipher is used in many wireless car door systems and garage openers. Recently the algorithm was studied and several attacks have been published. When a random seed is not used the...
Provided by Tel-Aviv University
-
White Papers
Transmission Scheduling for Mass Transit in Data Wireless Networks
August 1, 2006, 12:00am PDT
Scheduling of down-link transmission for data applications in wireless networks has been the focus of recent research. Channel-aware scheduling algorithms were shown to achieve significant...
Provided by Tel-Aviv University
-
White Papers
Navigation in Distance Vector Spaces and Its Use for Node Avoidance Routing
August 1, 2006, 12:00am PDT
Traditional network routing uses the single (shortest) path paradigm. This paradigm exposes sessions to various attacks along this path, such as eavesdropping, DoS attacks, etc. As a result,...
Provided by Tel-Aviv University
-
White Papers
Tolerant Algebraic Side-Channel Analysis of AES
February 23, 2012, 12:00am PST
The authors report on a Tolerant Algebraic Side-Channel Analysis (TASCA) attack on an AES implementation, using an optimizing pseudo-Boolean solver to recover the secret key from a vector of...
Provided by Tel-Aviv University
-
White Papers
Measuring the Validity of Peer-to-Peer Data for Information Retrieval Applications
September 16, 2011, 12:00am PDT
Peer-to-Peer (p2p) networks are being increasingly adopted as an invaluable resource for various Information Retrieval (IR) applications, including similarity estimation, content recommendation...
Provided by Tel-Aviv University
-
White Papers
Quantifying the Importance of Vantage Point Distribution in Internet Topology Mapping
June 27, 2011, 12:00am PDT
The topology of the Internet has been extensively studied in recent years, driving a need for increasingly complex measurement infrastructures. These measurements have produced detailed topologies...
Provided by Tel-Aviv University
-
White Papers
Centralized and Distributed Algorithms for Routing and Weighted Max-Min Fair Bandwidth Allocation
June 10, 2007, 12:00am PDT
Given a set of demands between pairs of nodes, the authors examine the traffic engineering problem of flow routing and fair bandwidth allocation where flows can be split to multiple paths (e.g.,...
Provided by Tel-Aviv University
-
White Papers
Tomography of Scale-Free Networks and Shortest Path Trees
December 15, 2006, 12:00am PST
In this paper, the authors model the tomography of scale-free networks by studying the structure of layers around an arbitrary network node. They find, both analytically and empirically, that the...
Provided by Tel-Aviv University
-
White Papers
Building Recommendation Systems Using Peer-to-Peer Shared Content
August 10, 2010, 12:00am PDT
Peer-To-Peer (p2p) networks are used for sharing content by millions of users. Often, meta-data used for searching is missing or wrong, making it difficult for users to find content. Moreover,...
Provided by Tel-Aviv University
-
White Papers
On the Applicability of Peer-to-Peer Data in Music Information Retrieval Research
June 2, 2010, 12:00am PDT
Peer-To-Peer (p2p) networks are being increasingly adopted as an invaluable resource for various Music Information Retrieval (MIR) tasks, including music similarity, recommendation and trend...
Provided by Tel-Aviv University
-
White Papers
Efficient Counting of Network Motifs
April 1, 2010, 12:00am PDT
Counting network motifs has an important role in studying a wide range of complex networks. However, when the network size is large, as in the case of Internet Topology and WWW graphs counting the...
Provided by Tel-Aviv University
-
White Papers
Song Clustering Using Peer-to-Peer Co-Occurrences
September 24, 2009, 12:00am PDT
Peer-to-peer (p2p) content sharing networks are commonly used by millions of users for sharing music files, often performed by artists even before becoming mainstream. In such networks, as well as...
Provided by Tel-Aviv University
-
White Papers
On the Diversity, Stability and Symmetry of End-to-End Internet Routes
February 17, 2010, 12:00am PST
The diversity of end-to-end (e2e) Internet routes has been studied for over a decade, dating back to Paxson's seminal work from 1995. This paper presents a measurement study of this issue and...
Provided by Tel-Aviv University
-
White Papers
Predicting Billboard Success Using Data-Mining in P2P Networks
December 30, 2009, 12:00am PST
Peer to Peer networks are the leading cause for music piracy but also used for music sampling prior to purchase. In this paper, the authors investigate the relations between music file sharing and...
Provided by Tel-Aviv University
-
White Papers
Near-Deterministic Inference of as Relationships
April 18, 2009, 12:00am PDT
The discovery of Autonomous Systems (ASes) interconnections and the inference of their commercial Type of Relationships (ToR) has been motivated by the need to accurately calculate AS-level paths....
Provided by Tel-Aviv University
-
White Papers
On the Feasibility of a Large Scale Distributed Testbed for Measuring Quality of Path Characteristics in the Internet
January 17, 2009, 12:00am PST
There is a long line of research on measuring the Quality of Service (QoS) path characteristics of the Internet, such as available bandwidth, path capacity, packets reordering, delay and jitter....
Provided by Tel-Aviv University
-
White Papers
Unifying Unknown Nodes in the Internet Graph Using Semisupervised Spectral Clustering
September 26, 2008, 12:00am PDT
Most research on Internet topology is based on active measurement methods. A major difficulty in using these tools is that one comes across many unresponsive routers. Different methods of dealing...
Provided by Tel-Aviv University
-
White Papers
Automatic Large Scale Generation of Internet PoP Level Maps
August 4, 2008, 12:00am PDT
Point of Presence (PoP) level Internet maps are promising for tasks such as reasoning about the Internet evolution in time or Internet delay estimation. The authors thus suggest an efficient...
Provided by Tel-Aviv University
-
White Papers
On the Benefits of Cheating by Self-Interested Agents in Vehicular Networks
May 18, 2007, 12:00am PDT
As more and more cars are equipped with GPS and Wi-Fi transmitters, it becomes easier to design systems that will allow cars to interact autonomously with each other, e.g., regarding traffic on...
Provided by Tel-Aviv University
-
White Papers
Real-Time Video Streaming in Multi-Hop Wireless Static Ad Hoc Networks
August 7, 2011, 12:00am PDT
The authors deal with the problem of streaming multiple video streams between pairs of nodes in a multi-hop wireless ad hoc network. The nodes are static, know their locations, and are...
Provided by Tel-Aviv University
-
White Papers
Real-Time Video Streaming in Multi-Hop Wireless Static Ad Hoc Networks
August 7, 2011, 12:00am PDT
The authors deal with the problem of streaming multiple video streams between pairs of nodes in a multi-hop wireless ad hoc network. The nodes are static, know their locations, and are...
Provided by Tel-Aviv University
-
White Papers
On the Benefits of Cheating by Self-Interested Agents in Vehicular Networks
May 18, 2007, 12:00am PDT
As more and more cars are equipped with GPS and Wi-Fi transmitters, it becomes easier to design systems that will allow cars to interact autonomously with each other, e.g., regarding traffic on...
Provided by Tel-Aviv University
-
White Papers
Automatic Large Scale Generation of Internet PoP Level Maps
August 4, 2008, 12:00am PDT
Point of Presence (PoP) level Internet maps are promising for tasks such as reasoning about the Internet evolution in time or Internet delay estimation. The authors thus suggest an efficient...
Provided by Tel-Aviv University
-
White Papers
Unifying Unknown Nodes in the Internet Graph Using Semisupervised Spectral Clustering
September 26, 2008, 12:00am PDT
Most research on Internet topology is based on active measurement methods. A major difficulty in using these tools is that one comes across many unresponsive routers. Different methods of dealing...
Provided by Tel-Aviv University
-
White Papers
On the Feasibility of a Large Scale Distributed Testbed for Measuring Quality of Path Characteristics in the Internet
January 17, 2009, 12:00am PST
There is a long line of research on measuring the Quality of Service (QoS) path characteristics of the Internet, such as available bandwidth, path capacity, packets reordering, delay and jitter....
Provided by Tel-Aviv University
-
White Papers
Near-Deterministic Inference of as Relationships
April 18, 2009, 12:00am PDT
The discovery of Autonomous Systems (ASes) interconnections and the inference of their commercial Type of Relationships (ToR) has been motivated by the need to accurately calculate AS-level paths....
Provided by Tel-Aviv University
-
White Papers
Predicting Billboard Success Using Data-Mining in P2P Networks
December 30, 2009, 12:00am PST
Peer to Peer networks are the leading cause for music piracy but also used for music sampling prior to purchase. In this paper, the authors investigate the relations between music file sharing and...
Provided by Tel-Aviv University
-
White Papers
On the Diversity, Stability and Symmetry of End-to-End Internet Routes
February 17, 2010, 12:00am PST
The diversity of end-to-end (e2e) Internet routes has been studied for over a decade, dating back to Paxson's seminal work from 1995. This paper presents a measurement study of this issue and...
Provided by Tel-Aviv University
-
White Papers
Song Clustering Using Peer-to-Peer Co-Occurrences
September 24, 2009, 12:00am PDT
Peer-to-peer (p2p) content sharing networks are commonly used by millions of users for sharing music files, often performed by artists even before becoming mainstream. In such networks, as well as...
Provided by Tel-Aviv University
-
White Papers
Efficient Counting of Network Motifs
April 1, 2010, 12:00am PDT
Counting network motifs has an important role in studying a wide range of complex networks. However, when the network size is large, as in the case of Internet Topology and WWW graphs counting the...
Provided by Tel-Aviv University
-
White Papers
On the Applicability of Peer-to-Peer Data in Music Information Retrieval Research
June 2, 2010, 12:00am PDT
Peer-To-Peer (p2p) networks are being increasingly adopted as an invaluable resource for various Music Information Retrieval (MIR) tasks, including music similarity, recommendation and trend...
Provided by Tel-Aviv University
-
White Papers
Building Recommendation Systems Using Peer-to-Peer Shared Content
August 10, 2010, 12:00am PDT
Peer-To-Peer (p2p) networks are used for sharing content by millions of users. Often, meta-data used for searching is missing or wrong, making it difficult for users to find content. Moreover,...
Provided by Tel-Aviv University
-
White Papers
Tomography of Scale-Free Networks and Shortest Path Trees
December 15, 2006, 12:00am PST
In this paper, the authors model the tomography of scale-free networks by studying the structure of layers around an arbitrary network node. They find, both analytically and empirically, that the...
Provided by Tel-Aviv University
-
White Papers
Centralized and Distributed Algorithms for Routing and Weighted Max-Min Fair Bandwidth Allocation
June 10, 2007, 12:00am PDT
Given a set of demands between pairs of nodes, the authors examine the traffic engineering problem of flow routing and fair bandwidth allocation where flows can be split to multiple paths (e.g.,...
Provided by Tel-Aviv University
-
White Papers
Quantifying the Importance of Vantage Point Distribution in Internet Topology Mapping
June 27, 2011, 12:00am PDT
The topology of the Internet has been extensively studied in recent years, driving a need for increasingly complex measurement infrastructures. These measurements have produced detailed topologies...
Provided by Tel-Aviv University
-
White Papers
Measuring the Validity of Peer-to-Peer Data for Information Retrieval Applications
September 16, 2011, 12:00am PDT
Peer-to-Peer (p2p) networks are being increasingly adopted as an invaluable resource for various Information Retrieval (IR) applications, including similarity estimation, content recommendation...
Provided by Tel-Aviv University
-
White Papers
Tolerant Algebraic Side-Channel Analysis of AES
February 23, 2012, 12:00am PST
The authors report on a Tolerant Algebraic Side-Channel Analysis (TASCA) attack on an AES implementation, using an optimizing pseudo-Boolean solver to recover the secret key from a vector of...
Provided by Tel-Aviv University
-
White Papers
Navigation in Distance Vector Spaces and Its Use for Node Avoidance Routing
August 1, 2006, 12:00am PDT
Traditional network routing uses the single (shortest) path paradigm. This paradigm exposes sessions to various attacks along this path, such as eavesdropping, DoS attacks, etc. As a result,...
Provided by Tel-Aviv University
-
White Papers
Transmission Scheduling for Mass Transit in Data Wireless Networks
August 1, 2006, 12:00am PDT
Scheduling of down-link transmission for data applications in wireless networks has been the focus of recent research. Channel-aware scheduling algorithms were shown to achieve significant...
Provided by Tel-Aviv University
-
White Papers
Cryptanalysis of KeeLoq Code-Hopping Using a Single FPGA
May 8, 2011, 12:00am PDT
The KeeLoq cipher is used in many wireless car door systems and garage openers. Recently the algorithm was studied and several attacks have been published. When a random seed is not used the...
Provided by Tel-Aviv University
-
White Papers
Questions In Decision Theory
August 1, 2009, 12:00am PDT
This paper surveys a few major questions in the field of decision theory. It is argued that a re-examination of some of the fundamental concepts of the field may have important implications to...
Provided by Tel-Aviv University
-
White Papers
Joint Unitary Triangularization for MIMO Networks
May 14, 2011, 12:00am PDT
This paper considers communication networks where individual links can be described as MIMO channels. Unlike orthogonal modulation methods (such as the singular-value decomposition), the authors...
Provided by Tel-Aviv University
-
White Papers
Delay and Redundancy in Lossless Source Coding
December 20, 2010, 12:00am PST
The penalty incurred by imposing a finite delay constraint in lossless source coding of a memoryless source is investigated. It is well known that for the so-called block-to-variable and...
Provided by Tel-Aviv University
-
White Papers
Universal Communication Over Modulo-Additive Channels With an Individual Noise Sequence
December 13, 2010, 12:00am PST
Which communication rates can be attained over an unknown channel where the relation between the input and output can be arbitrary? A channel where the output is any arbitrary (possibly...
Provided by Tel-Aviv University
-
White Papers
Composable Security Analysis of OS Services
April 15, 2009, 12:00am PDT
The authors provide an analytical framework for analyzing basic integrity properties of file systems, namely the binding of files to filenames and writing capabilities. A salient feature of their...
Provided by Tel-Aviv University
-
White Papers
Public-Key Cryptographic Primitives Provably as Secure as Subset Sum
November 27, 2009, 12:00am PST
The authors propose a semantically-secure public-key encryption scheme whose security is polynomial-time equivalent to the hardness of solving random instances of the subset sum problem. The...
Provided by Tel-Aviv University
-
White Papers
Why the Standard Data Processing Should Be Changed
March 8, 2007, 12:00am PST
The basic statistical methods of data representation did not change since their emergence. Their simplicity was dictated by the intricacies of computations in the before computers epoch. It turns...
Provided by Tel-Aviv University
-
White Papers
Key-Dependent Message Security: Generic Amplification and Completeness
February 4, 2011, 12:00am PST
The study of secure encryption scheme is perhaps the most central subject in cryptography. Since the discovery of semantic security till the formulation of CCA-security modern cryptography has...
Provided by Tel-Aviv University
-
White Papers
Towards a Game Theoretic View of Secure Computation
March 17, 2011, 12:00am PDT
The authors demonstrate how Game Theoretic concepts and formalism can be used to capture cryptographic notions of security. In the restricted but indicative case of two-party protocols in the face...
Provided by Tel-Aviv University
-
White Papers
Error Bounds for Repeat-Accumulate Codes Decoded Via Linear Programming
February 22, 2010, 12:00am PST
The authors examine regular and irregular Repeat-Accumulate (RA) codes with repetition degrees which are all even. For these codes and with a particular choice of an interleaver, they give an...
Provided by Tel-Aviv University
-
White Papers
On the Dynamics of IP Address Allocation and Availability of End-Hosts
November 10, 2010, 12:00am PST
The availability of end-hosts and their assigned routable IP addresses has impact on the ability to fight spammers and attackers, and on peer-to-peer application performance. Previous works study...
Provided by Tel-Aviv University
-
White Papers
Attacks on RFID-Based Electronic Voting Systems
September 21, 2009, 12:00am PDT
Many secure systems, such as contactless credit cards and secure entrance systems are built with contactless smartcard RFID technologies. In many cases these systems are claimed to be secure based...
Provided by Tel-Aviv University
-
White Papers
Semantic Security Under Related-Key Attacks and Applications
October 25, 2010, 12:00am PDT
In a Related-Key Attack (RKA) an adversary attempts to break a cryptographic primitive by invoking the primitive with several secret keys which satisfy some known, or even chosen, relation. The...
Provided by Tel-Aviv University
-
White Papers
Competitive Algorithms for Distributed Data Management
April 2, 2007, 12:00am PDT
This paper deals with the competitive analysis of algorithms for managing data in a distributed environment. The paper deals with the file allocation problem ([DF], [ML]), where copies of a file...
Provided by Tel-Aviv University
-
White Papers
Korset: Automated, Zero False-Alarm Intrusion Detection for Linux
September 18, 2009, 12:00am PDT
Host-based Intrusion Detection Systems traditionally compare observable data to pre-constructed models of normal behavior. Such models can either be automatically learnt during a training session,...
Provided by Tel-Aviv University
-
White Papers
Lesion Detection and Segmentation in Uterine Cervix Images Using an Arc-Level MRF
May 1, 2009, 12:00am PDT
This study develops a procedure for automatic extraction and segmentation of a class-specific object (or region) by learning class-specific boundaries. The paper presents and evaluates the method...
Provided by Tel-Aviv University
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