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security management
(20046 results)-
White Papers
Waters Signatures With Optimal Security Reduction
Jan 2012
Waters signatures (Eurocrypt 2005) can be shown existentially unforgeable under chosen-message attacks under the assumption that the computational Diffie-Hellman problem in the underlying...
Provided by Karlsruhe Institute of Technology (KIT)
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White Papers
Comments of an Efficient and Secure Multiserver Authentication Scheme With Key Agreement
Jan 2011
Recently, Tsaur et al. proposed an authentication scheme for multi-server environments and claimed their scheme could withstand various attacks. In this paper, the authors will point out that...
Provided by Wuhan University
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White Papers
Decentralized Attribute-Based Signatures
Dec 2011
In this paper, the authors present the first Decentralized Multi-Authority Attribute-Based Signature (DMA-ABS) scheme, in which no central authority and no trusted setup are required. The proposed...
Provided by Mitsubishi Electric
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White Papers
Efficient Attribute-Based Signatures for Non-Monotone Predicates in the Standard Model
Dec 2011
This paper presents a fully secure (adaptive-predicate unforgeable and private) Attribute-Based Signature (ABS) scheme in the standard model. The security of the proposed ABS scheme is proven...
Provided by Mitsubishi Electric
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White Papers
SPONGENT: The Design Space of Lightweight Cryptographic Hashing
Dec 2011
The design of secure yet efficiently implementable cryptographic algorithms is a fundamental problem of cryptography. Lately, lightweight cryptography - optimizing the algorithms to t the most...
Provided by Technical University of Denmark
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White Papers
Efficient Network Coding Signatures in the Standard Model
Mar 2012
Network Coding is a routing technique where each node may actively modify the received packets before transmitting them. While this departure from passive networks improves throughput and...
Provided by New York University
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White Papers
Deterministic Identity Based Signature Scheme and Its Application for Aggregate Signatures
Dec 2011
The revolutionary impact offered by identity based cryptography is phenomenal. This novel mechanism was first coined by Adi Shamir in 1984. Since then, several identity based signature schemes...
Provided by Indian Institute of Technology Madras
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White Papers
A Non-Interactive Deniable Authentication Scheme in the Standard Model
Dec 2011
Deniable authentication protocols enable a sender to authenticate a message to a receiver such that the receiver is unable to prove the identity of the sender to a third party. In contrast to...
Provided by Yangzhou University
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White Papers
Fully Secure (Doubly-)Spatial Encryption Under Simpler Assumptions
Dec 2011
Spatial encryption was first proposed by Boneh and Hamburg in 2008. It is one implementation of the generalized identity-based encryption schemes and many systems with a variety of properties can...
Provided by Chinese Academy of Sciences
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White Papers
Yet Another Ultralightweight Authentication Protocol That Is Broken
Jan 2012
Eghdamian and Samsudin published at ICIEIS 2011 an ultralight-weight mutual authentication protocol that requires few bitwise operations. The simplicity of the design makes the protocol very...
Provided by Universite Catholique de Louvain
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White Papers
A New Class of Multivariate Public Key Cryptosystem Constructed on the Basis of Message-Dependent Transformation
Dec 2011
In this paper, a new class of Public-Key Cryptosystem (PKC) based on Random Simultaneous Equation of degree g(RSE(g)PKC) is presented. The proposed scheme uses a new class of trap-doors based on...
Provided by Osaka Gakuin University
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White Papers
Cryptanalysis of WG-7 A Lightweight Stream Cipher for RFID Encryption
Dec 2011
WG-7 is a stream cipher based on WG Stream Cipher and is designed by Y. Luo, Q. Chai, G. Gong, and X. Lai in 2010. This cipher is designed to implement in low cost and lightweight application such...
Provided by Macquarie University
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White Papers
Analysis of Some Natural Variants of the PKP Algorithm
Dec 2011
In this paper, the authors studied simple variants of PKP. Using one idea alone doesn't give good results but, surprisingly, combining 3 ideas creates a more efficient scheme. Those 3 ideas are :...
Provided by University of Versailles Saint-Quentin-en-Yvelines
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White Papers
Cryptanalysis of Symmetric Block Ciphers Based on the Feistel Network With Non-Bijective S-Boxes in the Round Function
Dec 2011
The authors consider ciphertext-only attack on symmetric block ciphers based on the Feistel network with secret S-boxes installed as an additional parameter, like in Soviet GOST 28147-89. In case...
Provided by Kharkiv national university of radioelectronics
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White Papers
Identification Based Encryption With RSA-OAEP Using SEM and Without
Dec 2011
In this paper, the authors show how they can integrate the RSA (RSA-OAEP) into the IBE. Their prove can be make with either Standard Model or Random Oracle. They firstly develop the basic ideas...
Provided by University Mohammed V Souissi
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White Papers
Timing Attacks Against the Syndrome Inversion in Code-Based Cryptosystems
Dec 2011
In this paper, the authors present new timing vulnerabilities that arise in the inversion of the error syndrome through the Extended Euclidean Algorithm that is part of the decryption operation of...
Provided by Technische Universitat Darmstadt
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White Papers
UC Framework for Anonymous Communication
Dec 2011
In this paper, the authors present an UC framework for the general task of anonymous communication. Definition of the ideal and the real models are carried out in the BPW...
Provided by Budapest University of Technology and Economics
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Whitepapers
Better Bootstrapping in Fully Homomorphic Encryption
Dec 2011
Gentry's bootstrapping technique is currently the only known method of obtaining a "Pure" Fully Homomorphic Encryption (FHE) schemes, and it may offers performance advantages even in cases that do...
Provided by IBM
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White Papers
CTL: A Platform-Independent Crypto Tools Library Based on Dataflow Programming Paradigm
Dec 2011
The diversity of computing platforms is increasing rapidly. In order to allow security applications to run on such diverse platforms, implementing and optimizing the same cryptographic primitives...
Provided by University of Konstanz
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White Papers
On Definitions of Selective Opening Security
Apr 2012
Assume that an adversary observes many ciphertexts, and may then ask for openings, i.e., the plaintext and the randomness used for encryption, of some of them. Do the unopened ciphertexts remain...
Provided by Karlsruhe Institute of Technology (KIT)
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White Papers
CommitCoin: Carbon Dating Commitments With Bitcoin
Dec 2011
In the standard definition of a commitment scheme, the sender commits to a message and immediately sends the commitment to the recipient interested in it. However, the sender may not always know...
Provided by University of Waterloo
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White Papers
Enhanced Biometrics-Based Remote User Authentication Scheme Using Smart Cards
Dec 2011
In 2010, Li and Hwang proposed an efficient biometrics-based remote user authentication scheme using smart card. Recently, for improving its security and supporting session key agreement, Li et...
Provided by Jinan University
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White Papers
Basing Obfuscation on Simple Tamper-Proof Hardware Assumptions
Jan 2012
Code obfuscation is one of the most powerful concepts in cryptography. It could yield functional encryption, digital rights management, and maybe even secure cloud computing. However, general code...
Provided by Karlsruhe Institute of Technology (KIT)
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White Papers
Extended Combinatorial Constructions for Peer-to-Peer User-Private Information Retrieval
Dec 2011
The authors consider User-Private Information Retrieval (UPIR), an interesting alternative to Private Information Retrieval (PIR) introduced by Domingo-Ferrer et al.. In UPIR, the database knows...
Provided by University of Waterloo
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White Papers
Fast and Secure Root-Finding for Code-Based Cryptosystems
Dec 2011
In this paper, the authors analyze four previously published respectively trivial approaches to the task of finding the roots of the error locator polynomial during the decryption operation of...
Provided by Technische Universitat Darmstadt
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White Papers
Improved Results on Impossible Differential Cryptanalysis of Reduced-Round Camellia-192/256
Dec 2011
The block cipher Camellia was jointly proposed by NTT and Mitsubishi Electric Corporations. It was then submitted to several standardization and evaluation projects such as the NESSIE Project and...
Provided by Shanghai Jiao Tong University
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White Papers
Re-Encryption-Based Key Management Towards Secure and Scalable Mobile Applications in Clouds
Dec 2011
Cloud computing confers strong economic advantages, but many clients are reluctant to implicitly trust a third-party cloud provider. To address these security concerns, data may be transmitted and...
Provided by University of Waterloo
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White Papers
An Efficient and Private RFID Authentication Protocol Supporting Ownership Transfer
Dec 2011
Radio Frequency IDentification based systems, which are the most famous example of ubiquitous networks, are getting pervasively deployed in many daily life applications where privacy sensitivity...
Provided by Sabanci University
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White Papers
Efficient Modular Exponentiation-Based Puzzles for Denial-of-Service Protection
Nov 2011
Client puzzles are moderately-hard cryptographic problems - neither easy nor impossible to solve - that can be used as a counter-measure against denial of service attacks on network protocols....
Provided by Queensland University of Technology
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White Papers
On the Security of ID Based Signcryption Schemes
Feb 2012
A signcryption scheme is secure only if it satisfies both the confidentiality and the unforgeability properties. All the ID based signcryption schemes presented in the standard model till now do...
Provided by Indian Institute of Technology Madras
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White Papers
Cloud-Assisted Multiparty Computation From Fully Homomorphic Encryption
Dec 2011
The authors construct protocols for secure multiparty computation with the help of a computationally powerful party, namely the "Cloud". Their protocols are simultaneously efficient in a number of...
Provided by New York University
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White Papers
Deploying Secure Multi-Party Computation for Financial Data Analysis
Dec 2011
In this paper, the authors describe a secure system for jointly collecting and analyzing financial data for a consortium of ICT companies. To guarantee each participant's privacy, they use secret...
Provided by University of Tartu
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White Papers
Privacy-Preserving Stream Aggregation With Fault Tolerance
Dec 2011
The authors consider applications where an untrusted aggregator would like to collect privacy sensitive data from users, and compute aggregate statistics periodically. For example, imagine a smart...
Provided by University of Hong Kong
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White Papers
An Improved Certificateless Authenticated Key Agreement Protocol
Dec 2011
In this paper, the authors show that their protocol is insecure against a man-in-the-middle attack which is a severe disaster for a key agreement protocol. In addition, the authors claimed that...
Provided by Tsinghua University
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White Papers
Security Enhancement of the Vortex Family of Hash Functions
May 2009
Vortex is a new family of one-way hash functions which has been submitted to the NIST SHA-3 competition. Its design is based on using the Rijndael block cipher round as a building block, and using...
Provided by Intel
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White Papers
Fully Secure Spatial Encryption Under Simple Assumptions With Constant-Size Ciphertexts
Dec 2011
In this paper, the authors propose two new Spatial Encryption (SE) schemes based on existing Inner Product Encryption (IPE) schemes. Both of their SE schemes are fully secure under simple...
Provided by Nanyang Technological University
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White Papers
On the Security of NMAC and Its Variants
Dec 2011
HMAC, a derivative of NMAC, is a practically and commonly used, widely standardized MAC construction nowadays. HMAC has two advantages. First, HMAC can make use of current hash functions, the most...
Provided by National University of Defense Technology
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White Papers
Achieving Short Ciphertexts or Short Secret-Keys for Adaptively Secure General Inner-Product Encryption
Jan 2012
In this paper, the authors present two Non-zero Inner-Product Encryption (NIPE) schemes that are adaptively secure under a standard assumption, the Decisional LINear (DLIN) assumption, in the...
Provided by Mitsubishi Electric
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White Papers
The Security Impact of a New Cryptographic Library
Dec 2011
This paper introduces a new cryptographic library, NaCl, and explains how the design and implementation of the library avoid various types of cryptographic disasters suffered by previous...
Provided by University of Illinois
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White Papers
Fully Homomorphic Encryption Based on Approximate Matrix GCD
Dec 2011
The authors first introduce Approximate Matrix GCD problem (AMGCD), and construct public key encryption schemes based on AMGCD. Then, they define a variant of AMGCD and design a new Fully...
Provided by Jiangsu Teachers University of Technology
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White Papers
From Reactive to Operationalized: Reducing Costs Through Maturing Security Processes
May 2008
As organizations react to the changing economic climate and growing operational pressures, they are looking to move their security and compliance programs to a mature and operationalized state in...
Provided by NetIQ
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White Papers
Document Security and Protection: An Overview of Document Security and Protection Systems
Jan 2009
Underpinning all the digital security systems is encryption. If prospective document security solution does not use this, then forget it because it is just smoke and mirrors. Encryption is the...
Provided by LockLizard
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White Papers
10 Things You Really Wished You Had Known About PDF Security, But They Didn't Tell You!
May 2009
The LockLizard approach is to license the relationship between the document publisher and customer, and automatically establish and verify authorizations on a document by document basis. No access...
Provided by LockLizard
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White Papers
PDF Encryption and Security: Adobe PDF Encryption and Security History
Aug 2007
Early PDF document security relied on weak 40 bit encryption and soon after it was released methods of breaking it were freely available on the Internet. In May 2001 128 bit encryption became...
Provided by LockLizard
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White Papers
PDF Security - A Brief History of Development
Mar 2008
Adobe was the first organization that set out to try and provide security controls for PDF based documents, and had their own particular views as to what users might (or might not) want in order...
Provided by LockLizard
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White Papers
Information Leakage - The Enemy Is Within
Aug 2008
Increasingly, businesses are becoming painfully aware that whilst there are plenty of outsiders who would like to steal some, if not all of their information (people's views as to what is the good...
Provided by LockLizard
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White Papers
Why Dealing Rooms Are Better Implemented Through DRM Solutions
Aug 2008
In any enterprise there is information that has to be kept secret, but must be distributed, and therefore has to be identified with any recipient in the event that it is 'Leaked.' This paper...
Provided by LockLizard
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White Papers
Digital Rights Management - DRM: An Introduction to DRM
Jan 2009
DRM offers industry information providers, which include the financial industries, analysts, consultants, programmers database owners and so on, as well as the record and film industries, with...
Provided by LockLizard
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White Papers
Encryption and DRM: Why Encryption Is Not Enough to Protect Your Electronic Documents
Jan 2009
Encryption is the technology that underpins electronic document management and control, however great care needs to be taken in its implementation if it is to be anything more than a fictional...
Provided by LockLizard
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White Papers
PC-Disable Delivers Intelligent Client-Side Protection for Lost or Stolen Notebooks
Apr 2009
Keeping data secure in a mobile environment is not just a daunting challenge, but a critical requirement. Loss and theft of notebooks computers leaves sensitive data vulnerable, while financial...
Provided by Absolute Software
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White Papers
Visibility Equals Money Saved
May 2009
In education, the incorporation of computers is becoming progressively more prevalent - school districts, colleges and universities are increasingly relying on mobile computers to enhance teaching...
Provided by e.Republic
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White Papers
IT Security's Critical Role During Layoffs
Jul 2009
The Gateway Recession of 2009 has brought the prospect of slowing sales and profits - and job losses. Although layoffs are never desirable, they are often necessary. Much of the responsibility for...
Provided by Forrester Research
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White Papers
Solving the Password Management Paradox: Defining the Problem and Reviewing the Four Best-Known Solutions
Jul 2008
This paper reviews the challenge of password management and security, discusses the paradox of strong password policies, evaluates several possible solutions, and recommends a password management...
Provided by Siber Systems
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White Papers
The Human Factor in Laptop Encryption: US Study
Dec 2008
Encryption is one of the most important security tools in the defense of information assets. Ponemon Institute has conducted numerous studies on organizations' use of encryption to prevent the...
Provided by Ponemon Institute
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White Papers
Password Management Survey: IT Managers Respond to the Impact of Password Policies on Security and Productivity
Jan 2009
A growing trend for many companies is to implement stronger password policies designed to increase network security. Employees in companies from across all industries find themselves having too...
Provided by Siber Systems
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White Papers
The Transitioning of Cryptographic Algorithms and Key Sizes
Jul 2009
At the beginning of the century, NIST began the task of providing cryptographic key management guidance. This included lessons learned over many years of dealing with key management issues, and...
Provided by National Institute of Standards and Technology
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White Papers
Secure Remote Access: Give Users "In Office" Remote Access - Anytime, Anywhere
Jun 2008
As organizations strive to increase productivity, secure remote access to network resources becomes increasingly important. It is an ideal way to ensure employees remain connected and productive...
Provided by WatchGuard Technologies
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White Papers
Trusted Identities, Managed Access: Implementing an Identity and Access Management Strategy for the Mobile Enterprise
Jun 2008
Whether one is looking to securely deliver applications and data to remote employees, secure online business relationships, or deliver convenient identity and access solutions to end customers,...
Provided by WatchGuard Technologies
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White Papers
When Corporate Network Safety Starts at Employees' Homes: Protecting Your Network From Home Wireless Hackers
Aug 2008
While there is no guarantee for 100% hacker-free security, the "SAFE WIFI" practices package some of the best security that is commonly available with today's commercial products, to make home...
Provided by WatchGuard Technologies
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White Papers
Understanding and Blocking the New Botnets
Apr 2008
Botnets are widely regarded as the top threat to network security. This paper explains how botnets have traditionally worked, then contrasts the established model with startling botnet innovations...
Provided by WatchGuard Technologies
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White Papers
Top 10 Threats to SME Data Security: (and What to Do About Them)
Oct 2008
All of the attack vectors are well-known to security professionals. Mature processes, techniques, and technologies are available to help one defend against them. Although on some days it might...
Provided by WatchGuard Technologies
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White Papers
How WatchGuard Could Have Saved Hannaford and TJX Money: Real-World ROI Calculations for Retail Network Security Solutions
Feb 2009
Is there a financial Return On Investment (ROI) from purchasing network security technology to guard retail computer network? As a network administrator, one want strong security measures in order...
Provided by WatchGuard Technologies
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White Papers
Finding Value in a Turbulent Economy With PCI DSS
Apr 2009
The list of merchants that have experienced a breach in the security of credit card data continues to grow.1 The frequency of these data loss events, mounting financial losses, and systemic fear...
Provided by WatchGuard Technologies
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White Papers
Network Security Essentials for Your New Small Business
Apr 2009
The reason: sloppy data security can take one out of business, fast. In fact, the US Department of Labor has warned that 93% of businesses that suffer a significant data loss go out of business...
Provided by WatchGuard Technologies
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White Papers
The Target on Your Network Is Growing: Securing Your Network During an Economic Downturn
May 2009
On the long walk back to office, trying to assess how this is going to affect, or possibly devastate IT organization. Capital purchases will need to be delayed, one needs to stay on older software...
Provided by WatchGuard Technologies
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White Papers
Practical Advantages of Fireware XTM for Hands-On IT Administrators
Jul 2009
This paper is written for IT professionals currently comparing the merits of various network security appliances. If the notion of firewalls being commodities was ever true, it certainly is not...
Provided by WatchGuard Technologies
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White Papers
Network Security & Compliance: How They Drive Quality of Care
Jul 2009
This paper examines events that are driving the demand for increased security of Protected Health Information (PHI) within the healthcare industry. In it, it reviews new laws, enhanced HIPAA...
Provided by WatchGuard Technologies
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White Papers
PCI Requirements Mapping: BorderWare Security Platform Secure Content & Threat Management Platform
Sep 2009
In a business environment where daily media reports of consumer data loss are on the rise and PCI compliance audits are placing increasing pressure on organizations to implement tools and...
Provided by WatchGuard Technologies
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White Papers
ActiveSync Configuration for WatchGuard SSL 100
Oct 2009
With ActiveSync, users get push functionality to keep email, calendar, tasks, and contacts up to date on a mobile device. It is possible to securely run ActiveSync over SSL through the WatchGuard...
Provided by WatchGuard Technologies
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White Papers
Making NAC Security-Aware With IF-MAP
Apr 2008
A long-standing difficulty in network security has been the collection, correlation, and searchability of bits of information about users of the network. Many enterprises have tools, ranging from...
Provided by Trusted Computing Group
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White Papers
New Standard Lays the Foundation for Coordinated, Multi-Vendor Security
Jun 2009
From Ethernet to HTML, standardization of IT technologies has ultimately led to more choice, greater system interoperability, and lower costs for enterprises. The security market is no exception....
Provided by Juniper Networks
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White Papers
360° Network Access Control With TippingPoint NAC
Aug 2008
Protecting enterprise networks from attacks has been improved immeasurably over the past several years. Yet, for all of the deployment of perimeter security firewalls, application security...
Provided by 3Com
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White Papers
Intrusion Prevention (IPS) for Federal Government Networks: Meeting the Demands of a New IT Security Reality
Jun 2009
This paper explores what federal organizations can do to apply network security best practices and make the most of security budgets and resources in a changing threat environment. Federal...
Provided by 3Com
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White Papers
Real World Intrusion Prevention (IPS): For the Demands of a New Security Reality
Nov 2008
This paper addresses three primary areas that organizations must consider when formulating network security strategies and evaluating possible solutions for intrusion prevention. First, what are...
Provided by 3Com
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White Papers
Eight Questions to Ask About Your Intrusion-Security Solution: Why Intrusion Prevention - Not Detection - Is Essential
Sep 2008
After all, IDS and IPS solutions are designed and engineered for fundamentally different purposes. An Intrusion Detection System is a classical out-of-band device that merely detects and generates...
Provided by 3Com
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White Papers
Managing to Secure: Evaluating the Manageability of Your IPS Solution
Aug 2009
No one is born a network security manager Security personnel often migrate from the network side of the house and can face a steep learning curve. Many quickly find their hands full with an...
Provided by 3Com
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White Papers
Three Waves, One Defense: How Intrusion Prevention System (IPS) Protects From an Ever-Broadening Threat Landscape
Aug 2009
Off late when the first worms began to assault networks worldwide, modern attackers of network security have been using a version of this ancient military tactic. To date, they have unleashed...
Provided by 3Com
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White Papers
Cloud Computing Security: Making Virtual Machines Cloud-Ready
Dec 2008
This paper identifies security concerns arising in cloud computing environments and outlines methods to maintain compliance integrity and preserve security protection as virtual resources move...
Provided by Third Brigade
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White Papers
Simplifying Operational Security: Securing Configuration Automation for IT Audit Readiness
Mar 2009
Shavlik Technologies provides innovative security software solutions that simplify the most complex of IT security related challenges. Shavlik's products are widely used around the world,...
Provided by Shavlik Technologies
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White Papers
Top 10 Ways Shavlik Simplifies Patch Management
Apr 2008
Security vulnerabilities are uncovered on a daily basis, and managing the security patches that address them can be an endless and often complicated task for every network administrator. Without...
Provided by Shavlik Technologies
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White Papers
Efficient and Optimally Secure Key-Length Extension for Block Ciphers Via Randomized Cascading
Mar 2012
The authors consider the question of efficiently extending the key length of block ciphers. To date, the approach providing highest security is triple encryption (used e.g., in Triple-DES), which...
Provided by University of California
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White Papers
Attack on Fully Homomorphic Encryption Over the Integers
Feb 2012
This paper presents a heuristic attack on the fully homomorphic encryption over the integers by using lattice reduction algorithm. The authors' result shows that the FHE in [DGHV10] is not secure...
Provided by Jiangsu Teachers University of Technology
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White Papers
Toward Practical Group Encryption
Mar 2012
A group encryption scheme allows anyone to form a ciphertext for a given group member while keeping the receiver's identity private. At the same time, the encryptor is capable of proving that some...
Provided by International Association for Cryptologic Research
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White Papers
The Joint Signature and Encryption Revisited
Mar 2012
In this paper, the authors studied the classical paradigms used to build many opaque signatures, namely StE, EtS, and CtEtS. They showed using an increasingly popular tool, namely meta-reductions,...
Provided by International Association for Cryptologic Research
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White Papers
On Security of a Certificateless Aggregate Signature Scheme
Apr 2012
Aggregate signatures are useful in special areas where the signatures on many different messages generated by many different users need to be compressed. Very recently, Xiong et al. proposed a...
Provided by NanJing Normal University
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White Papers
On Boolean Ideals and Varieties With Application to Algebraic Attacks
Mar 2012
Finding the key of symmetric cipher takes computing common zero of polynomials, which define ideal and corresponding variety, usually considered over algebraically closed field. The solution is...
Provided by St. Petersburg State University
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White Papers
Circular Chosen-Ciphertext Security With Compact Ciphertexts
Mar 2012
A Key-Dependent Message (KDM) secure encryption scheme is secure even if an adversary obtains encryptions of messages that depend on the secret key. Such key-dependent encryptions naturally occur...
Provided by International Association for Cryptologic Research
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White Papers
Attacking Scrambled Burrows-Wheeler Transform
Mar 2012
Scrambled Burrows-Wheeler transform is an attempt to combine privacy (encryption) and data compression. The authors show that the proposed approach is insecure. They present chosen plaintext and...
Provided by Comenius University
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White Papers
Client-Server Authentication Using Pairings
Mar 2012
What would be the ideal attributes of a client-server authentication scheme? One might like an identity based scheme not requiring PKI, plus support for multi-factor authentication based on a...
Provided by International Association for Cryptologic Research
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White Papers
On Security Arguments of the Second Round SHA-3 Candidates
Mar 2012
In 2007, the US National Institute for Standards and Technology (NIST) announced a call for the design of a new cryptographic hash algorithm in response to vulnerabilities like differential...
Provided by Katholieke Universiteit Leuven
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White Papers
Construction of the Tsujii-Shamir-Kasahara (TSK) Type Multivariate Public Key Cryptosystem, Which Relies on the Difficulty of Prime Factorization
Mar 2012
A new Multivariate Public-Key Cryptosystem (MPKC) with the security based on the difficulty of the prime factoring is proposed. Unlike conventional cryptosystems such as RSA, most MPKCs are...
Provided by Chuo University
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White Papers
Somewhat Practical Fully Homomorphic Encryption
Mar 2012
In this paper, the authors port Brakerski's fully homomorphic scheme based on the Learning With Errors (LWE) problem to the ring-LWE setting. They introduce two optimised versions of...
Provided by Katholieke Universiteit Leuven
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White Papers
Universally Composable Secure Computation With (Malicious) Physically Uncloneable Functions
Apr 2012
The use of Physically Uncloneable Functions (PUFs) in Cryptography is a recent breakthrough that has caught the interest of both theoreticians and practitioners. A major step towards understanding...
Provided by University of Salerno
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White Papers
Identity-Based Encryption With Master Key-Dependent Message Security and Applications
Mar 2012
The authors introduce the concept of Identity-Based Encryption (IBE) with master Key-Dependent Chosen-Plaintext (mKDM-sID-CPA) security. These are IBE schemes that remain secure even after the...
Provided by University of Luxembourg
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White Papers
Bicliques for Permutations: Collision and Preimage Attacks in Stronger Settings
Mar 2012
The authors extend and improve biclique attacks, which were recently introduced for the cryptanalysis of block ciphers and hash functions. While previous attacks required a primitive to have a key...
Provided by Microsoft Research
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White Papers
An Improved Differential Attack on Full GOST
Mar 2012
GOST 28147-89 is a well-known block cipher and the official encryption standard of the Russian Federation. A 256-bit block cipher considered as an alternative for AES-256 and triple DES, having an...
Provided by University College London
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White Papers
Adaptive Key Protection in Complex Cryptosystems With Attributes
Mar 2012
In the Attribute-Based Encryption (ABE) model, attributes (as opposed to identities) are used to encrypt messages, and all the receivers with qualifying attributes can decrypt the ciphertext....
Provided by Peking University
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White Papers
David & Goliath Oblivious Affine Function Evaluation - Asymptotically Optimal Building Blocks for Universally Composable Two-Party Computation from a Single Untrusted Stateful Tamper-Proof Hardware Token
Mar 2012
Cryptographic assumptions regarding tamper proof hardware tokens have gained increasing attention. Even if the tamper-proof hardware is issued by one of the parties, and hence not necessarily...
Provided by Karlsruhe Institute of Technology (KIT)
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White Papers
A Digital Signature Scheme for Long-Term Security
Feb 2012
In this paper, the authors propose a signature scheme based on two intractable problems, namely the integer factorization problem and the discrete logarithm problem for elliptic curves. It is...
Provided by International Association for Cryptologic Research
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White Papers
CFS Software Implementation
Mar 2012
CFS is the first practical code-based signature scheme. In the present paper, the authors present the initial scheme and its evolutions, the attacks it had to face and the countermeasures applied....
Provided by INRIA
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White Papers
Security of Feistel Schemes With New and Various Tools
Mar 2012
In this paper, the authors combine ideas from two different proof techniques: the Coupling technique and the H Coefficients technique. They introduce a new Theorem: the "H Coefficients Composition...
Provided by International Association for Cryptologic Research
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White Papers
ECM at Work
Feb 2012
The performance of the Elliptic Curve Method (ECM) for integer factorization plays an important role in the security assessment of RSA-based protocols as a co-factorization tool inside the number...
Provided by EPFL
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White Papers
A Lattice-Based Traitor Tracing Scheme
Feb 2012
A traitor tracing scheme is a multi-receiver encryption scheme where malicious receiver coalitions aiming at building pirate decryption devices are deterred by the existence of a tracing...
Provided by CNRS
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White Papers
Remarks On-An Ideal Multi-Secret Sharing Scheme Based on MSP
Dec 2011
In 2010, C.- F. Hsu, Q.Cheng, X.M.Tang and B.Zeng proposed an ideal linear multi-secret sharing scheme based on monotone span programs (for short HCTZ scheme). This paper mainly makes an analysis...
Provided by International Association for Cryptologic Research
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White Papers
Improved Algebraic Side-Channel Attack on AES
Apr 2012
In this paper, the authors present improvements of the algebraic side-channel analysis of the Advanced Encryption Standard (AES) proposed. In particular, they optimize the algebraic representation...
Provided by Technische Universitat Darmstadt
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White Papers
Optimally Robust Private Information Retrieval
Feb 2012
The authors give a protocol for multi-server information-theoretic private information retrieval which achieves the theoretical limit for Byzantine robustness. That is, the protocol can allow a...
Provided by University of Waterloo
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White Papers
Semi-Supervised Template Attack
Feb 2012
Side channel attacks take advantage of the information leak-age in a cryptographic device. A template attack is a family of side channel attacks which is reputed to be extremely effective. This...
Provided by Universite Libre de Bruxelles
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White Papers
Computational Soundness of Symbolic Zero-knowledge Proofs: Weaker Assumptions and Mechanized Verification
Feb 2012
The abstraction of cryptographic operations by term algebras, called symbolic models, is essential in almost all tool-supported methods for analyzing security protocols. Significant progress was...
Provided by Saarland University
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White Papers
Strongly Unforgeable Proxy Re-Signature Schemes in the Standard Model
Feb 2012
Proxy re-signatures are generally used for the delegation of signatures to a semi-trusted proxy which transforms the signatures between the users of the system. Its a handy primitive for network...
Provided by Indian Institute of Technology Madras
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White Papers
Public Key Cryptosystems Constructed Based on Reed-Solomon Codes, K(XV)SE(2)PKC, Realizing Coding Rate of Exactly 1.0
Feb 2012
In this paper, the authors present a new class of public-key cryptosystems, K(XV)SE(2)PKC realizing the coding rate of exactly 1.0, based on Reed-Solomon codes(RS codes). They show that...
Provided by Osaka Gakuin University
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White Papers
Magnitude Squared Coherence Based SCA
Mar 2012
Magnitude Squared Coherence is a signal processing tool that indicates how well two time domain signals match one with the other by tracking linear dependencies in their spectral decomposition....
Provided by International Association for Cryptologic Research
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White Papers
Identity-Based Encryption Is Secure in the Quantum Random Oracle Model
Mar 2012
The authors give the first proof of security for an identity-based encryption scheme in the quantum random oracle model. This is the first unconditional proof of security for any scheme in this...
Provided by Stanford University
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White Papers
Efficient Identity-Based Threshold Decryption Scheme From Bilinear Pairings
Feb 2012
Taking advantage of a technique that allows to safely distribute a private key among decryption servers the authors introduce a new identity-based threshold scheme, proven secure in the random...
Provided by Shanghai Jiao Tong University
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White Papers
Efficient Identity-Based Threshold Signature Scheme From Bilinear Pairings in the Standard Model
Feb 2012
The authors propose a new Identity-Based THreshold Signature (IBTHS) scheme from bilinear pairings enjoying the following advantages in efficiency, security and functionality. The round-complexity...
Provided by University of Birmingham
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White Papers
Particularly Friendly Members of Family Trees
Feb 2012
The last decade has witnessed many clever constructions of parameterized families of pairing-friendly elliptic curves that now enable implementors targeting a particular security level to gather...
Provided by International Association for Cryptologic Research
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White Papers
Fast Reductions From RAMs to Delegatable Succinct Constraint Satisfaction Problems
Feb 2012
Succinct arguments for NP are proof systems that allow a weak verifier to retroactively check computation done by a more powerful prover. These protocols prove membership in languages (consisting...
Provided by Tel Aviv University
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White Papers
Automatic Search of Attacks on Round-Reduced AES and Applications
Feb 2012
In this paper, the authors describe versatile and powerful algorithms for searching guess-and-determine and meet-in-the-middle attacks on some byte-oriented symmetric primitives. To demonstrate...
Provided by INRIA
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White Papers
Extended Security Arguments for (Ring) Signature Schemes
Feb 2012
The well-known forking lemma by Pointcheval and Stern has been used to prove the security of the so-called generic signature schemes. These signature schemes are obtained via the Fiat-Shamir...
Provided by University of Luxembourg
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White Papers
Parallelizing Message Schedules to Accelerate the Computations of Hash Functions
Feb 2012
This paper describes an algorithm for accelerating the computations of Davies-Meyer based hash functions. It is based on parallelizing the computation of several message schedules for several...
Provided by University of Haifa
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White Papers
Weak Keys of the Full MISTY1 Block Cipher for Related-Key Cryptanalysis
Feb 2012
The MISTY1 block cipher has received considerable attention and its security has been thoroughly analyzed since its publication, particularly the European NESSIE project announced that "No...
Provided by Multimedia University
