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digital signatures
(315 results)-
White Papers
Aggregate and Verifiably Encrypted Signatures From Bilinear Maps
Jan 2011
An aggregate signature scheme is a digital signature that supports aggregation: Given n signatures on n distinct messages from n distinct users, it is possible to aggregate all these signatures...
Provided by Stanford University
-
White Papers
Identity Based Strong Designated Verifier Parallel Multi-Proxy Signature Scheme
Apr 2009
Shamir in 1985 introduced the concept of IDentity(ID) based cryptosystems where, a users public key is derived from his identity and the corresponding private key is generated by a trusted third...
Provided by Cornell University
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White Papers
Some Proxy Signature and Designated Verifier Signature Schemes Over Braid Groups
Apr 2009
Braid groups have recently attracted the attention of many cryptographers. These highly non-commutative groups are useful to construct cryptosystems. They provide numerous mathematical hard...
Provided by Cornell University
-
White Papers
Iterative Method for Improvement of Coding and Decryption
Jul 2009
Cryptographic check values (digital signatures, MACs and H-MACs) are useful only if they are free of errors. For that reason all of errors in cryptographic check values should be corrected after...
Provided by University of Siegen
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White Papers
Dynamic IdP Signature Processing by Fast Elimination Using DFA
Jul 2009
Intrusion Detection & Prevention Systems (IDPS) generally aim at detecting/preventing attacks against Information systems and networks. The basic task of IDPS is to monitor network & system...
Provided by AIRCC
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White Papers
On the Security of the Winternitz One-Time Signature Scheme
Apr 2011
The authors show that the Winternitz one-time signature scheme is existentially unforgeable under adaptive chosen message attacks when instantiated with a family of pseudo random functions....
Provided by Technische Universitat Darmstadt
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White Papers
Physical Turing Machines and the Formalization of Physical Cryptography
Apr 2011
Physical Cryptography (PhC) is a recently emerging form of cryptography and security. Central to this young field are not the mathematical properties of certain cryptographic functions (such as...
Provided by Technische Universität München
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White Papers
Designated Confirmer Signatures With Unified Verification
Mar 2011
After the introduction of Designated Confirmer Signatures (DCS) by Chaum in 1994, considerable researches have been done to build generic schemes from standard digital signatures and construct...
Provided by University of Birmingham
-
White Papers
An efficient certificateless short signature scheme from pairings
Apr 2011
To avoid the inherent key escrow problem in ID-based public key cryptosystem, Al-Riyami and Paterson introduced a new approach called certificateless public key cryptography. Recently, several...
Provided by Wuhan University
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White Papers
High-speed Hardware Implementation of Rainbow Signatures on FPGAs
Apr 2011
The authors propose a new efficient hardware implementation of Rain-bow signature scheme. They enhance the implementation in three directions. First, they develop a new parallel hardware design...
Provided by South China University of Technology
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White Papers
Bounded Vector Signatures and Their Applications
Mar 2011
Although malleability is undesirable in traditional digital signatures, schemes with limited malleability properties enable interesting functionalities that may be impossible to obtain otherwise...
Provided by Association for Computing Machinery
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White Papers
Unconditionally Secure Signature Schemes Revisited
Mar 2011
Unconditionally Secure Signature (USS) schemes provide the ability to electronically sign documents without the reliance on computational assumptions needed in traditional digital signatures....
Provided by University of Waterloo
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White Papers
A Novel Group Signature Scheme Based on MPKC
Mar 2011
Group signature allows a group member to sign messages anonymously on the behalf of a group. In the case of a dispute, the designated group manager can open the signature to reveal the identity of...
Provided by South China University of Technology
-
White Papers
Identity-Based Digital Signature Scheme Without Bilinear Pairings
Feb 2011
Many identity-based digital signature schemes using bilinear pairings have been proposed. But the relative computation cost of the pairing is approximately twenty times higher than that of the...
Provided by Wuhan University
-
White Papers
Adaptive Pseudo-Free Groups and Applications
Jan 2011
A computational group is pseudo-free if an adversary cannot find solutions in this group for equations that are not trivially solvable in the free group. This notion was put forth by Rivest as a...
Provided by University of Bristol
-
White Papers
Identity Based Online/Offline Signcryption Scheme
Jul 2010
Online/Offline signcryption is a cryptographic primitive where the signcryption process is divided into two phases - online and offline phase. Most of the computations are carried out offline...
Provided by Indian Institute of Technology Madras
-
White Papers
Identity Based Self Delegated Signature - Self Proxy Signatures
Jun 2010
A proxy signature scheme is a variant of digital signature scheme in which a signer delegates his signing rights to another person called proxy signer, so that the proxy signer can generate the...
Provided by Indian Institute of Technology Madras
-
White Papers
Attacking M&M Collective Signature Scheme
May 2010
A collective signature scheme aims to solve the problem of signing a message by multiple signers. Recently, Moldovyan and Moldovyan proposed a scheme for collective signatures based on Schnorr...
Provided by Comenius University
-
White Papers
Hash-Based Multivariate Public Key Cryptosystems
May 2010
Many efficient attacks have appeared in recent years, which have led to serious blow for the traditional multivariate public key cryptosystems. For example, the signature scheme SFLASH was broken...
Provided by Wuhan University
-
White Papers
A Framework for Efficient Signatures, Ring Signatures and Identity Based Encryption in the Standard Model
Sep 2010
In this paper, the authors present a generic framework for constructing efficient signature schemes, ring signature schemes, and identity based encryption schemes, all in the standard model...
Provided by Weizmann Institute of Science
-
White Papers
Attribute-Based Signatures
Nov 2010
The authors introduce Attribute-Based Signatures (ABS), a versatile primitive that allows a party to sign a message with ne-grained control over identifying information. In ABS, a signer, who...
Provided by University of Illinois
-
White Papers
Group Message Authentication
Nov 2010
Group signatures is a powerful primitive with many practical applications, allowing a group of parties to share a signature functionality, while protecting the anonymity of the signer. However,...
Provided by KTH Royal Institute of Technology
-
White Papers
Efficient Two-Move Blind Signatures in the Common Reference String Model
Jan 2011
Blind signatures provide a mechanism for achieving privacy and anonymity whereby a user gets the signer to sign a message of his choice without the signer learning the content of the message, nor...
Provided by University of Bristol
-
White Papers
The Digital Signature Scheme MQQ-SIG
Dec 2010
The authors the seven names given in the title of this paper and undersigned on this statement, the authors and designers of MQQ-SIG digital signature scheme, do hereby agree to grant any...
Provided by Norwegian University of Science and Technology
-
White Papers
Signatures Resilient to Continual Leakage on Memory and Computation
Oct 2010
Recent breakthrough results by Brakerski et al and Dodis et al have shown that signature schemes can be made secure even if the adversary continually obtains information leakage from the secret...
Provided by Columbia University
-
White Papers
Efficient and Provably Secure Identity Based Aggregate Signature Schemes With Partial and Full Aggregation
Aug 2010
An identity based signature allows users to sign their documents using their private keys and the signature can be verified by any user by using the identity of the signer and public parameters of...
Provided by Indian Institute of Technology Madras
-
White Papers
Key Exchange With Anonymous Authentication Using DAA-SIGMA Protocol
Sep 2010
Anonymous digital signatures such as Direct Anonymous Attestation (DAA) and group signatures have been a fundamental building block for anonymous entity authentication. In this paper, the authors...
Provided by Intel
-
White Papers
Short One-Time Signatures
Jul 2010
The authors present a new one-time signature scheme having short signatures. The new scheme is also the first one-time signature scheme that supports aggregation, batch verification, and which...
Provided by University of Waterloo
-
White Papers
Synchronized Aggregate Signatures: New Definitions, Constructions and Applications
Jul 2010
An aggregate signature scheme is a digital signature scheme where anyone given n signatures on n messages from n users can aggregate all these signatures into a single short signature....
Provided by Johns Hopkins University
-
White Papers
An Efficient ID- Based Directed Signature Scheme From Bilinear Pairings
Dec 2009
A directed signature scheme allows a designated verifier to directly verify a signature issued to him, and a third party to check the signature validity with the help of the signer or the...
Provided by Andhra University
-
White Papers
Security of ECQV-Certified ECDSA Against Passive Adversaries
Mar 2011
The authors show that the Elliptic Curve Qu-Vanstone implicit certificate scheme (ECQV), when composed with the Elliptic Curve Digital Signature Algorithm (ECDSA), is secure against passive...
Provided by International Association for Cryptologic Research
-
White Papers
Flexible Quasi-Dyadic Code-Based Public-Key Encryption and Signature
May 2010
Drawback of code-based public-key cryptosystems is that their public-key size is large. It takes some hundreds KB to some MB for typical parameters. While several attempts have been conducted to...
Provided by National Institute of Advanced Industrial Science and Technology (AIST)
-
White Papers
A Framework for Universally Composable Non-Committing Blind Signatures
Oct 2009
A Universally Composable (UC) blind signature functionality requires user to commit to the message to be blindly signed. It is thereby impossible to realize in the plain model. This paper shows...
Provided by Nippon Telegraph and Telephone
-
White Papers
Fault Attacks Against EMV Signatures
Oct 2009
At CHES 2009, Coron, Joux, Kizhvatov, Naccache and Paillier (CJKNP) exhibited a fault attack against RSA signatures with partially known messages. This attack allows factoring the public modulus...
Provided by Ecole normale superieure
-
White Papers
Efficient and Provably Secure Certificateless Signcryption From Bilinear Maps
Apr 2010
Signcryption is a cryptographic primitive that fulfills both the functions of digital signature and public key encryption simultaneously, at a cost significantly lower than that required by the...
Provided by Guangxi University for Nationalities
-
White Papers
Fault Attacks on RSA Signatures With Partially Unknown Messages
Jun 2009
Fault attacks exploit hardware malfunctions to recover secrets from embedded electronic devices. In the late 90's, Boneh, DeMillo and Lipton introduced fault-based attacks on CRT-RSA. These...
Provided by University of Luxembourg
-
White Papers
Toward a Generic Construction of Convertible Undeniable Signatures From Pairing-Based Signatures
Jul 2009
Undeniable signatures were proposed to limit the verification property of ordinary digital signatures. In fact, the verification of such signatures cannot be attained without the help of the...
Provided by Bonn-Aachen International Center for Information Technology
-
White Papers
Security Analysis of Aggregate Signature and Batch Verification Signature Schemes
Jun 2009
An identity based signature scheme allows any pair of users to communicate securely and to verify each other's signatures without exchanging public key certificates. An aggregate signature scheme...
Provided by Indian Institute of Technology Madras
-
White Papers
Key-Exposure Free Chameleon Hashing and Signatures Based on Discrete Logarithm Systems
Jan 2011
Chameleon signatures simultaneously provide the properties of non-repudiation and non-transferability for the signed message. However, the initial constructions of chameleon signatures suffer from...
Provided by Sun Yat-sen University
-
White Papers
Certificateless Group Oriented Signature Secure Against Key Replacement Attack
Apr 2009
Since Al-Riyami and Paterson presented certificateless cryptography, many certificateless schemes have been proposed for different purposes. In this paper, the authors present a certificateless...
Provided by International Association for Cryptologic Research
-
White Papers
Cryptanalysis of an Elliptic Curve-Based Signcryption Scheme
Jan 2010
The signcryption is a relatively new cryptographic technique that is supposed to fulfill the functionalities of encryption and digital signature in a single logical step. Although several...
Provided by Iran University of Science and Technology
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White Papers
Automated Synthesis of Privacy-Preserving Distributed Applications
Dec 2011
One of the central challenges in the development of distributed systems is the design of cryptographic protocols that meet the desired functional requirements and enforce the intended security...
Provided by Saarland University
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White Papers
Secure Design of RSA-Based Cryptosystems
Apr 2008
The design of secure cryptosystems is of central importance in cryptography. Textbook RSA does not achieve the highest security level and so cannot be used in all contexts. This paper surveys...
Provided by Cambridge University Press
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White Papers
Self-Signed Executables: Restricting Replacement of Program Binaries by Malware
Aug 2007
The authors propose using digital signatures to protect binaries already on the system from modifications by malware. While applicable to any file which is not intended to be modified by an end...
Provided by Carleton University
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Whitepapers
Data confidential: Keeping private information safe
Dec 2011
Getting data protection right is important. Data loss can lead to a serious loss of customer confidence, which, in some cases, can lead to legal consequences or bring down an entire business....
Provided by VeriSign
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Whitepapers
How to choose a Certificate Authority for safer web security
Dec 2011
Without trust, no website or online service can succeed in the competitive online marketplace. This year has seen a spate of breaches that have targeted the systems of Certificate Authorities...
Provided by VeriSign
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White Papers
A Fully Distributed Proactively Secure Threshold-Multi-signature Scheme
Apr 2007
Threshold-multisignature schemes combine the properties of threshold group-oriented signature schemes and multisignature schemes to yield a signature scheme that allows a threshold (t) or more...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Medical Image Integrity Control Combining Digital Signature and Lossless Watermarking
Jan 2010
Enforcing protection of medical content becomes a major issue of computer security. Since medical contents are more and more widely distributed, it is necessary to develop security mechanism to...
Provided by Institut Telecom
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White Papers
A Fair Non-Transfer Exchange Protocol
Jun 2009
Network exchange is now widely used. However, it still cannot avoid the problems evolving from network exchange. For example, a buyer may not receive the order even if he/she makes the payment....
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Harnessing the Power of P2P Systems for Fast Attack Signature Validation
Jul 2009
Attack signature validation plays a key role in intrusion detection and prevention technologies. Usually, when new attacks, particularly worms, appear, security software analyzes and generates...
Provided by Institute for Infocomm Research
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White Papers
Security of QImage File
Apr 2008
A digital signature is a piece of information which identifies the sender of a document. The digital signature is realized by encrypting the content of the document, using the sender's...
Provided by University Alexandru Ioan Cuza
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White Papers
New Proxy Signatures Preserving Privacy and as Secure as ElGamal Signatures
Aug 2010
Digital signature is a useful primitive to attain the integrity and authenticity in various wire or wireless communications. Proxy signature is one type of the digital signatures. It helps the...
Provided by Curtin University of Technology
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White Papers
A Conceptualized Model for Enhancing Non-repudiation in University E-Form Processing
Feb 2011
Most organizations use one form of online registration or another. Since these registration forms are structured to be open and available to users, many of them do not afford or seem to require...
Provided by JATIT
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White Papers
Electronic Seal Stamping Based on Group Signature
May 2011
CNBAB is an e-commerce platform which constructs a credit worthy trade environment and provides financing channels for Chinese Small and Medium-sized Enterprise (SME) and even small enterprises....
Provided by Birla Institute of Technology
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White Papers
Provision of Deniability in E-Mail Protocol
Nov 2008
E-mail is considered as one of the most important and most frequently used internet services. For privacy and security reasons, it is desirable that e-mail protocol provides deniability....
Provided by Ajou University
-
White Papers
Distributed Branching Bisimulation Minimization by Inductive Signatures
Dec 2009
The idea of distributed model checking of very large systems, is to store the state space in the collective memory of a cluster of workstations, and employ parallel algorithms to analyze the...
Provided by University of Twente
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White Papers
Information Security and Sender's Rights Protection Through Embedded Public Key Signature
May 2010
Information security is not just to provide an authenticity and integrity to the data, but there is also a need to seek identity, rights of use and origin of information, which may require some...
Provided by Banasthali University
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White Papers
An Efficient Signature System Using Optimized RSA Algorithm
Dec 2008
Digital signature are used in message transmission to verify the identity of the sender and ensure that a message has not been modified after signing. RSA algorithm is extensively used in the...
Provided by Al-Azhar University
-
White Papers
Crypto Analysis of Newly Compression Function
Dec 2008
Hash functions are functions that map an input of arbitrary length to a string of fixed length, the hashcode. If these mappings satisfy some additional cryptographic conditions, they can be used...
Provided by Oxford Educational Institutions
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Whitepapers
International Technology Group: Value Proposition for IBM Power Systems - Platform Choices for the Enterprise SAP Infrastructure
Jun 2011
In today's environment the central issue becomes how to maintain competitive momentum while reducing costs. SAP solutions can play a major role in achieving the former. New approaches to the...
Provided by IBM
-
White Papers
Multi-Verifier Signatures
Aug 2009
Multi-verifier signatures generalize traditional digital signatures to a secret-key setting. Just like digital signatures, these signatures are both transferable and secure under arbitrary...
Provided by Cornell University
-
White Papers
Mitigating Denial-of-Service Attacks in MANET by Incentive-Based Packet Filtering: A Game-Theoretic Approach
Sep 2007
Defending against Denial-of-Service attacks (DoS) in a Mobile Ad Hoc NETwork (MANET) is challenging because the network topology is dynamic and nodes are selfish. In this paper, the authors...
Provided by Purdue University
-
White Papers
Electronic Authority Variation
Sep 2009
The problem of authorization was raised in 1990 by Fischer for he confirmation of the originality of source. Russell in 1994 described the problem in detail and suggested various options available...
Provided by Jamia Millia Islamia
-
Whitepapers
Unified Communications Buyer's Guide
May 2011
Asking the right questions early in the vetting process is essential for selecting the solution that can best meet your business goals and IT requirements. The Unified Communications Buyer's...
Provided by ShoreTel
-
White Papers
On the Generic Construction of Identity-Based Signatures With Additional Properties
Oct 2008
It has been demonstrated by Bellare, Neven, and Namprempre (Eurocrypt 2004) that identity-based signature schemes can be generically constructed from standard digital signature schemes. In this...
Provided by University of Luxembourg
-
White Papers
A Tree-Based Model of Unicast Stream Authentication
Jan 2011
When proving the security of a message authentication scheme, the messages are considered to be atomic objects. Straightforward application of such schemes to some information resources may...
Provided by Florida State University
-
White Papers
Function Interface Models for Hardware Compilation: Types, Signatures, Protocols
Jul 2009
The problem of synthesis of gate-level descriptions of digital circuits from behavioral specifications written in higher-level programming languages (hardware compilation) has been studied for a...
Provided by University of Birmingham
-
White Papers
A Forward-Secure Signature With Backward-Secure Detection
Jun 2007
This paper enhances the security of Abdalla and Reyzin's forward-secure signature scheme with backward-secure detection. In the proposed scheme, the authors embedded the hash-chain into the...
Provided by National Sun Yat-Sen University
-
White Papers
Unlinkable Randomizable Signature and Its Application in Group Signature
Nov 2007
The authors formalize a generic method of constructing efficient group signatures, specifically, they define new notions of unlinkable randomizable signature, indirectly signable signature and...
Provided by Chinese Academy of Sciences
-
White Papers
Construction of Universal Designated-Verifier Signatures and Identity-Based Signatures From Standard Signatures
May 2008
The authors give a generic construction for universal designated-verifier signature schemes from a large class, C, of signature schemes. The resulting schemes are efficient and have two important...
Provided by University of Calgary
-
White Papers
Strongly Unforgeable ID-Based Signatures Without Random Oracles
Apr 2009
In this paper, the authors construct a strongly unforgeable ID-based signature scheme without random oracles. The signature size of the scheme is smaller than that of other schemes based on...
Provided by University of Tsukuba
-
White Papers
Certificateless Group Oriented Signature Secure Against Key Replacement Attack
Apr 2009
Since Al-Riyami and Paterson presented certificateless cryptography, many certificateless schemes have been proposed for different purposes. In this paper, the authors present a certificateless...
Provided by International Association for Cryptologic Research
-
White Papers
Key-Exposure Free Chameleon Hashing and Signatures Based on Discrete Logarithm Systems
Jan 2011
Chameleon signatures simultaneously provide the properties of non-repudiation and non-transferability for the signed message. However, the initial constructions of chameleon signatures suffer from...
Provided by Sun Yat-sen University
-
White Papers
Security Analysis of Aggregate Signature and Batch Verification Signature Schemes
Jun 2009
An identity based signature scheme allows any pair of users to communicate securely and to verify each other's signatures without exchanging public key certificates. An aggregate signature scheme...
Provided by Indian Institute of Technology Madras
-
White Papers
Toward a Generic Construction of Convertible Undeniable Signatures From Pairing-Based Signatures
Jul 2009
Undeniable signatures were proposed to limit the verification property of ordinary digital signatures. In fact, the verification of such signatures cannot be attained without the help of the...
Provided by Bonn-Aachen International Center for Information Technology
-
White Papers
Fault Attacks on RSA Signatures With Partially Unknown Messages
Jun 2009
Fault attacks exploit hardware malfunctions to recover secrets from embedded electronic devices. In the late 90's, Boneh, DeMillo and Lipton introduced fault-based attacks on CRT-RSA. These...
Provided by University of Luxembourg
-
White Papers
Efficient and Provably Secure Certificateless Signcryption From Bilinear Maps
Apr 2010
Signcryption is a cryptographic primitive that fulfills both the functions of digital signature and public key encryption simultaneously, at a cost significantly lower than that required by the...
Provided by Guangxi University for Nationalities
-
White Papers
Fault Attacks Against EMV Signatures
Oct 2009
At CHES 2009, Coron, Joux, Kizhvatov, Naccache and Paillier (CJKNP) exhibited a fault attack against RSA signatures with partially known messages. This attack allows factoring the public modulus...
Provided by Ecole normale superieure
-
White Papers
A Framework for Universally Composable Non-Committing Blind Signatures
Oct 2009
A Universally Composable (UC) blind signature functionality requires user to commit to the message to be blindly signed. It is thereby impossible to realize in the plain model. This paper shows...
Provided by Nippon Telegraph and Telephone
-
White Papers
Flexible Quasi-Dyadic Code-Based Public-Key Encryption and Signature
May 2010
Drawback of code-based public-key cryptosystems is that their public-key size is large. It takes some hundreds KB to some MB for typical parameters. While several attempts have been conducted to...
Provided by National Institute of Advanced Industrial Science and Technology (AIST)
-
White Papers
A Novel Group Signature Scheme Based on MPKC
Mar 2011
Group signature allows a group member to sign messages anonymously on the behalf of a group. In the case of a dispute, the designated group manager can open the signature to reveal the identity of...
Provided by South China University of Technology
-
White Papers
Identity-Based Digital Signature Scheme Without Bilinear Pairings
Feb 2011
Many identity-based digital signature schemes using bilinear pairings have been proposed. But the relative computation cost of the pairing is approximately twenty times higher than that of the...
Provided by Wuhan University
-
White Papers
Adaptive Pseudo-Free Groups and Applications
Jan 2011
A computational group is pseudo-free if an adversary cannot find solutions in this group for equations that are not trivially solvable in the free group. This notion was put forth by Rivest as a...
Provided by University of Bristol
-
White Papers
Identity Based Online/Offline Signcryption Scheme
Jul 2010
Online/Offline signcryption is a cryptographic primitive where the signcryption process is divided into two phases - online and offline phase. Most of the computations are carried out offline...
Provided by Indian Institute of Technology Madras
-
White Papers
Identity Based Self Delegated Signature - Self Proxy Signatures
Jun 2010
A proxy signature scheme is a variant of digital signature scheme in which a signer delegates his signing rights to another person called proxy signer, so that the proxy signer can generate the...
Provided by Indian Institute of Technology Madras
-
White Papers
Attacking M&M Collective Signature Scheme
May 2010
A collective signature scheme aims to solve the problem of signing a message by multiple signers. Recently, Moldovyan and Moldovyan proposed a scheme for collective signatures based on Schnorr...
Provided by Comenius University
-
White Papers
Hash-Based Multivariate Public Key Cryptosystems
May 2010
Many efficient attacks have appeared in recent years, which have led to serious blow for the traditional multivariate public key cryptosystems. For example, the signature scheme SFLASH was broken...
Provided by Wuhan University
-
White Papers
A Framework for Efficient Signatures, Ring Signatures and Identity Based Encryption in the Standard Model
Sep 2010
In this paper, the authors present a generic framework for constructing efficient signature schemes, ring signature schemes, and identity based encryption schemes, all in the standard model...
Provided by Weizmann Institute of Science
-
White Papers
Attribute-Based Signatures
Nov 2010
The authors introduce Attribute-Based Signatures (ABS), a versatile primitive that allows a party to sign a message with ne-grained control over identifying information. In ABS, a signer, who...
Provided by University of Illinois
-
White Papers
Group Message Authentication
Nov 2010
Group signatures is a powerful primitive with many practical applications, allowing a group of parties to share a signature functionality, while protecting the anonymity of the signer. However,...
Provided by KTH Royal Institute of Technology
-
White Papers
Efficient Two-Move Blind Signatures in the Common Reference String Model
Jan 2011
Blind signatures provide a mechanism for achieving privacy and anonymity whereby a user gets the signer to sign a message of his choice without the signer learning the content of the message, nor...
Provided by University of Bristol
-
White Papers
The Digital Signature Scheme MQQ-SIG
Dec 2010
The authors the seven names given in the title of this paper and undersigned on this statement, the authors and designers of MQQ-SIG digital signature scheme, do hereby agree to grant any...
Provided by Norwegian University of Science and Technology
-
White Papers
Signatures Resilient to Continual Leakage on Memory and Computation
Oct 2010
Recent breakthrough results by Brakerski et al and Dodis et al have shown that signature schemes can be made secure even if the adversary continually obtains information leakage from the secret...
Provided by Columbia University
-
White Papers
Efficient and Provably Secure Identity Based Aggregate Signature Schemes With Partial and Full Aggregation
Aug 2010
An identity based signature allows users to sign their documents using their private keys and the signature can be verified by any user by using the identity of the signer and public parameters of...
Provided by Indian Institute of Technology Madras
-
White Papers
Key Exchange With Anonymous Authentication Using DAA-SIGMA Protocol
Sep 2010
Anonymous digital signatures such as Direct Anonymous Attestation (DAA) and group signatures have been a fundamental building block for anonymous entity authentication. In this paper, the authors...
Provided by Intel
-
White Papers
Short One-Time Signatures
Jul 2010
The authors present a new one-time signature scheme having short signatures. The new scheme is also the first one-time signature scheme that supports aggregation, batch verification, and which...
Provided by University of Waterloo
-
White Papers
Synchronized Aggregate Signatures: New Definitions, Constructions and Applications
Jul 2010
An aggregate signature scheme is a digital signature scheme where anyone given n signatures on n messages from n users can aggregate all these signatures into a single short signature....
Provided by Johns Hopkins University
-
White Papers
An Efficient ID- Based Directed Signature Scheme From Bilinear Pairings
Dec 2009
A directed signature scheme allows a designated verifier to directly verify a signature issued to him, and a third party to check the signature validity with the help of the signer or the...
Provided by Andhra University
-
White Papers
Security of ECQV-Certified ECDSA Against Passive Adversaries
Mar 2011
The authors show that the Elliptic Curve Qu-Vanstone implicit certificate scheme (ECQV), when composed with the Elliptic Curve Digital Signature Algorithm (ECDSA), is secure against passive...
Provided by International Association for Cryptologic Research
-
White Papers
Flexible Quasi-Dyadic Code-Based Public-Key Encryption and Signature
May 2010
Drawback of code-based public-key cryptosystems is that their public-key size is large. It takes some hundreds KB to some MB for typical parameters. While several attempts have been conducted to...
Provided by National Institute of Advanced Industrial Science and Technology (AIST)
-
White Papers
A Framework for Universally Composable Non-Committing Blind Signatures
Oct 2009
A Universally Composable (UC) blind signature functionality requires user to commit to the message to be blindly signed. It is thereby impossible to realize in the plain model. This paper shows...
Provided by Nippon Telegraph and Telephone
-
White Papers
Fault Attacks Against EMV Signatures
Oct 2009
At CHES 2009, Coron, Joux, Kizhvatov, Naccache and Paillier (CJKNP) exhibited a fault attack against RSA signatures with partially known messages. This attack allows factoring the public modulus...
Provided by Ecole normale superieure
-
White Papers
Efficient and Provably Secure Certificateless Signcryption From Bilinear Maps
Apr 2010
Signcryption is a cryptographic primitive that fulfills both the functions of digital signature and public key encryption simultaneously, at a cost significantly lower than that required by the...
Provided by Guangxi University for Nationalities
-
White Papers
Fault Attacks on RSA Signatures With Partially Unknown Messages
Jun 2009
Fault attacks exploit hardware malfunctions to recover secrets from embedded electronic devices. In the late 90's, Boneh, DeMillo and Lipton introduced fault-based attacks on CRT-RSA. These...
Provided by University of Luxembourg
-
White Papers
Toward a Generic Construction of Convertible Undeniable Signatures From Pairing-Based Signatures
Jul 2009
Undeniable signatures were proposed to limit the verification property of ordinary digital signatures. In fact, the verification of such signatures cannot be attained without the help of the...
Provided by Bonn-Aachen International Center for Information Technology
-
White Papers
Security Analysis of Aggregate Signature and Batch Verification Signature Schemes
Jun 2009
An identity based signature scheme allows any pair of users to communicate securely and to verify each other's signatures without exchanging public key certificates. An aggregate signature scheme...
Provided by Indian Institute of Technology Madras
-
White Papers
Key-Exposure Free Chameleon Hashing and Signatures Based on Discrete Logarithm Systems
Jan 2011
Chameleon signatures simultaneously provide the properties of non-repudiation and non-transferability for the signed message. However, the initial constructions of chameleon signatures suffer from...
Provided by Sun Yat-sen University
-
White Papers
Certificateless Group Oriented Signature Secure Against Key Replacement Attack
Apr 2009
Since Al-Riyami and Paterson presented certificateless cryptography, many certificateless schemes have been proposed for different purposes. In this paper, the authors present a certificateless...
Provided by International Association for Cryptologic Research
-
White Papers
Strongly Unforgeable ID-Based Signatures Without Random Oracles
Apr 2009
In this paper, the authors construct a strongly unforgeable ID-based signature scheme without random oracles. The signature size of the scheme is smaller than that of other schemes based on...
Provided by University of Tsukuba
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White Papers
Construction of Universal Designated-Verifier Signatures and Identity-Based Signatures From Standard Signatures
May 2008
The authors give a generic construction for universal designated-verifier signature schemes from a large class, C, of signature schemes. The resulting schemes are efficient and have two important...
Provided by University of Calgary
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White Papers
Unlinkable Randomizable Signature and Its Application in Group Signature
Nov 2007
The authors formalize a generic method of constructing efficient group signatures, specifically, they define new notions of unlinkable randomizable signature, indirectly signable signature and...
Provided by Chinese Academy of Sciences
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White Papers
A Forward-Secure Signature With Backward-Secure Detection
Jun 2007
This paper enhances the security of Abdalla and Reyzin's forward-secure signature scheme with backward-secure detection. In the proposed scheme, the authors embedded the hash-chain into the...
Provided by National Sun Yat-Sen University
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White Papers
Function Interface Models for Hardware Compilation: Types, Signatures, Protocols
Jul 2009
The problem of synthesis of gate-level descriptions of digital circuits from behavioral specifications written in higher-level programming languages (hardware compilation) has been studied for a...
Provided by University of Birmingham
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White Papers
A Tree-Based Model of Unicast Stream Authentication
Jan 2011
When proving the security of a message authentication scheme, the messages are considered to be atomic objects. Straightforward application of such schemes to some information resources may...
Provided by Florida State University
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White Papers
On the Generic Construction of Identity-Based Signatures With Additional Properties
Oct 2008
It has been demonstrated by Bellare, Neven, and Namprempre (Eurocrypt 2004) that identity-based signature schemes can be generically constructed from standard digital signature schemes. In this...
Provided by University of Luxembourg
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Whitepapers
Unified Communications Buyer's Guide
May 2011
Asking the right questions early in the vetting process is essential for selecting the solution that can best meet your business goals and IT requirements. The Unified Communications Buyer's...
Provided by ShoreTel
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White Papers
Electronic Authority Variation
Sep 2009
The problem of authorization was raised in 1990 by Fischer for he confirmation of the originality of source. Russell in 1994 described the problem in detail and suggested various options available...
Provided by Jamia Millia Islamia
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White Papers
Mitigating Denial-of-Service Attacks in MANET by Incentive-Based Packet Filtering: A Game-Theoretic Approach
Sep 2007
Defending against Denial-of-Service attacks (DoS) in a Mobile Ad Hoc NETwork (MANET) is challenging because the network topology is dynamic and nodes are selfish. In this paper, the authors...
Provided by Purdue University
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White Papers
Multi-Verifier Signatures
Aug 2009
Multi-verifier signatures generalize traditional digital signatures to a secret-key setting. Just like digital signatures, these signatures are both transferable and secure under arbitrary...
Provided by Cornell University
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Whitepapers
International Technology Group: Value Proposition for IBM Power Systems - Platform Choices for the Enterprise SAP Infrastructure
Jun 2011
In today's environment the central issue becomes how to maintain competitive momentum while reducing costs. SAP solutions can play a major role in achieving the former. New approaches to the...
Provided by IBM
