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International Association for Cryptologic Research
(101 results)-
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SSE Implementation of Multivariate PKCs on Modern X86 CPUs
July 17, 2009, 12:00am PDT
Multivariate Public Key Cryptosystems (MPKCs) are often touted as future-proofing against Quantum Computers. It also has been known for efficiency compared to "Traditional" alternatives. However,...
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Secure Computation on the Web: Computing without Simultaneous Interaction
April 11, 2011, 12:00am PDT
Secure computation enables mutually suspicious parties to compute a joint function of their private inputs while providing strong security guarantees. Amongst other things, even if some of the...
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Information-theoretic Bounds for Differentially Private Mechanisms
February 10, 2011, 12:00am PST
There are two active and independent lines of research that aim at quantifying the amount of information that is disclosed by computing on confidential data. Each line of research has developed...
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Is Privacy Compatible With Truthfulness?
January 28, 2011, 12:00am PST
The authors investigate the mainstream interpretation of differential privacy, which says that given a differentially private mechanism, people are likely to share their data truthfully because...
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Security Weakness of Two Authenticated Key Exchange Protocols From Pairings
May 30, 2010, 12:00am PDT
Recently, Liu proposed two authenticated multiple key exchange protocols using pairings, and claimed two protocols featured many security attributes. In this paper, the authors show that Liu's...
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Two Improved Authenticated Multiple Key Exchange Protocols
May 9, 2010, 12:00am PDT
Many authenticated multiple key exchange protocols were published in recent years. In 2008, Lee et al. presented an authenticated multiple key exchange protocol based on bilinear pairings....
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Correlated Product Security From Any One-Way Function and the New Notion of Decisional Correlated Product Security
February 23, 2010, 12:00am PST
It is well-known that the k-wise product of one-way functions remains one-way, but may no longer be when the k inputs are correlated. At TCC 2009, Rosen and Segev introduced a new notion known as...
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Homomorphic Encryption Over Cyclic Groups Implies Chosen-Ciphertext Security
September 8, 2010, 12:00am PDT
Chosen-Ciphertext (IND-CCA) security is generally considered the right notion of security for a cryptosystem. Because of its central importance much effort has been devoted to constructing IND-CCA...
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A New Framework for RFID Privacy
January 25, 2011, 12:00am PST
Formal RFID security and privacy frameworks are fundamental to the design and analysis of robust RFID systems. In this paper, the authors develop a new definitional framework for RFID privacy in a...
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On Small Secret Key Attack Against RSA With High Bits Known Prime Factor
December 27, 2010, 12:00am PST
It is well known that if the higher half bits of a prime factor are known or the secret key is small enough then the RSA cryptosystem is broken (e.g. [Coppersmith, J. Cryptology, 1997] and...
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ROTIV: RFID Ownership Transfer With Issuer Verification
December 15, 2010, 12:00am PST
RFID tags travel between partner sites in a supply chain. For privacy reasons, each partner "Owns" the tags present at his site, i.e., the owner is the only entity able to authenticate his tags....
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No-Leak Authentication by the Sherlock Holmes Method
December 4, 2010, 12:00am PST
The authors propose a class of authentication schemes that are literally zero-knowledge, as compared to what is formally defined as "Zero-knowledge" in cryptographic literature. They call this...
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Generic Compilers for Authenticated Key Exchange (Full Version)
December 28, 2010, 12:00am PST
So far, all solutions proposed for authenticated key agreement combine key agreement and authentication into a single cryptographic protocol. However, in many important application scenarios, key...
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Scrutinizing Rebound Attacks: New Algorithms for Improving the Complexities
November 25, 2010, 12:00am PST
Rebound attacks are a state-of-the-art analysis method for hash functions. These cryptanalysis methods are based on a well chosen differential path and have been applied to several hash functions...
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Secret Key Leakage From Public Key Perturbation of DLP-Based Cryptosystems
November 4, 2010, 12:00am PDT
Finding efficient countermeasures for cryptosystems against fault attacks is challenged by a constant discovery of aws in designs. Even elements, such as public keys, that do not seem critical...
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The Cube Attack on Stream Cipher Trivium and Quadraticity Tests
November 14, 2010, 12:00am PST
In 2008 I. Dinur and A. Shamir presented a new type of algebraic attack on symmetric ciphers named cube attack. The method has been applied to reduced variants of stream ciphers Trivium and Grain-...
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Strongly Secure Certificate-Based Encryption Scheme With Low Communication Bandwidth
November 2, 2010, 12:00am PDT
Certificate-Based Encryption (CBE) is a new asymmetric encryption paradigm which was introduced to solve the certificate management problem in traditional Public-Key Encryption (PKE). It combines...
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Symmetric-Key Searchable Keyword Concealment (SSC)
October 26, 2010, 12:00am PDT
The authors discuss what is commonly known as "Searchable symmetric keywords encryption," although they prefer to replace "Encryption" with "Concealment," since many of these transformations are...
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Security of ECQV-Certified ECDSA Against Passive Adversaries
March 9, 2011, 12:00am PST
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...
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On the Analysis of Cryptographic Assumptions in the Generic Ring Model
December 17, 2009, 12:00am PST
At Eurocrypt 2009 Aggarwal and Maurer proved that breaking RSA is equivalent to factoring in the generic ring model. This model captures algorithms that may exploit the full algebraic structure of...
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A Strong Blind Signature Scheme Over Braid Groups
December 10, 2009, 12:00am PST
The rapid development of quantum computing makes public key cryptosystems not based on commutative algebraic systems hot topic. Because of the non-commutativity property, the braid group with...
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Security Analysis and Design of Proxy Signature Schemes Over Braid Groups
September 16, 2009, 12:00am PDT
The braid groups have attracted much attention as a new platform of constructing cryptosystems. This paper firstly analyzes the security vulnerabilities of existing proxy signature schemes over...
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On Key Authentic Degree of Cryptosystem
September 20, 2009, 12:00am PDT
Against such attacks as rubber-hose attack, key authentic degree of cryptosystem is expatiated in detail, and the important significance of key authentic degree of cryptosystem is pointed out. And...
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Cryptanalysis of the Niederreiter Public Key Scheme Based on GRS Subcodes
September 13, 2009, 12:00am PDT
In this paper a new structural attack on the McEliece/Niederreiter public key cryptosystem based on subcodes of generalized Reed-Solomon codes proposed by Berger and Loidreau is described. It...
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Generalization of Barreto Et Al ID Based Signcryption Scheme
May 5, 2009, 12:00am PDT
This paper presents an efficient and provable secure identity based generalized signcryption scheme based on which can work as signcryption scheme, encryption scheme and signature scheme as per...
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Certificateless Group Oriented Signature Secure Against Key Replacement Attack
April 4, 2009, 12:00am PDT
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...
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Flaws in Differential Cryptanalysis of Reduced Round PRESENT
July 20, 2010, 12:00am PDT
In this paper, the authors have presented flaws in differential cryptanalysis of reduced round variant of PRESENT given by M.Wang for 80 bits key length and the authors have shown that it is not...
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Authenticated Key Exchange Secure Under the Computational Diffie-Hellman Assumption
August 6, 2008, 12:00am PDT
In this paper, the authors present a new Authenticated Key Exchange (AKE) protocol and prove its security under the random oracle assumption and the Computational Diffie-Hellman(CDH) assumption....
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Provably Secure ID-Based Broadcast Signcryption (IBBSC) Scheme
May 18, 2008, 12:00am PDT
With the advent of mobile and portable devices such as cell phones and PDAs, wireless content distribution has become a major means of communications and entertainment. In such applications, a...
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A Modular Security Analysis of the TLS Handshake Protocol
June 1, 2008, 12:00am PDT
The authors study the security of the widely deployed Secure Session Layer/Transport Layer Security (TLS) key agreement protocol. The analysis identifies, justifies, and exploits the modularity...
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Cryptanalysis of a Client-to-Client Password-Authenticated Key Agreement Protocol
June 2, 2008, 12:00am PDT
Recently, Byun et al. proposed an efficient client-to-client password-authenticated key agreement protocol (EC2C-PAKA), which was provably secure in a formally defined security model. This letter...
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Obtaining Universally Composable Security: Towards the Bare Bones of Trust
December 15, 2007, 12:00am PST
A desirable goal for cryptographic protocols is to guarantee security when the protocol is composed with other protocol instances. Universally Composable (UC) security provides this guarantee in a...
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A New Provably Secure Authentication and Key Agreement Mechanism for SIP Using Certificateless Public-Key Cryptography
June 7, 2007, 12:00am PDT
The Session Initiation Protocol (SIP) is considered as the dominant signaling protocol for calls over the internet. However, SIP authentication typically uses HTTP digest authentication, which is...
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Anonymous Hierarchical Identity-Based Encryption (Without Random Oracles)
June 8, 2006, 12:00am PDT
The authors present an identity-based cryptosystem that features fully anonymous ciphertexts and hierarchical key delegation. They give a proof of security in the standard model, based on the mild...
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Another Look at "Provable Security". II
July 3, 2006, 12:00am PDT
The authors discuss the question of how to interpret reduction arguments in cryptography. They give some examples to show the subtlety and difficulty of this question. Suppose that one wants to...
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Macro Data Load: An Efficient Mechanism for Enhancing Loaded Data Reuse
April 1, 2011, 12:00am PDT
This paper presents a study on macro data load, a novel mechanism to increase the amount of loaded data reuse within a processor. A macro data load brings into the processor a maximum-width data...
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Attribute-Based Encryption for Fine-Grained Access Control of Encrypted Data
October 6, 2006, 12:00am PDT
As more sensitive data is shared and stored by third-party sites on the Internet, there will be a need to encrypt data stored at these sites. One drawback of encrypting data, is that it can be...
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A New Stream Cipher: DICING
September 5, 2007, 12:00am PDT
In a synchronous stream cipher, the ciphertext is generally made by bitwise adding (XOR) the plaintext with a binary sequence called keystream. In case that the cipher is abused or the plaintext...
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New features for JPEG Steganalysis
January 1, 2011, 12:00am PST
The authors present in this paper a new approach for specific JPEG steganalysis and propose studying statistics of the compressed DCT coefficients. Traditionally, steganographic algorithms try to...
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Hard Homogeneous Spaces
August 24, 2006, 12:00am PDT
The authors introduce the notion of Hard Homogeneous Space (HHS) and briefly develop the corresponding theory. They show that cryptographic protocols based on the discrete logarithm problem have a...
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The Collision Security of MDC-4
February 27, 2012, 12:00am PST
A cryptographic hash function is a function which maps an input of arbitrary length to an output of fixed length. It should satisfy at least collision-, preimage- and second-preimage resistance...
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Combined Attacks on the AES Key Schedule
February 24, 2012, 12:00am PST
The authors present new combined attacks on the AES key schedule based on the work of Roche et al.. The main drawbacks of the original attack are: the need for high repeatability of the fault, a...
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Cryptanalysis of a Universally Verifiable Efficient Re-Encryption Mixnet
February 24, 2012, 12:00am PST
The authors study the heuristically secure mix-net proposed by Puiggali and Guasch (EVOTE 2010). They present practical attacks on both correctness and privacy for some sets of parameters of the...
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FlipIt: The Game of "Stealthy Takeover"
February 26, 2012, 12:00am PST
Recent targeted attacks have increased significantly in sophistication, undermining the fundamental assumptions on which most cryptographic primitives rely for security. For instance, attackers...
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Cryptanalysis of Auditing Protocol Proposed by Wang Et Al. for Data Storage Security in Cloud Computing
March 1, 2012, 12:00am PST
Cloud Computing as the on-demand and remote provision of computational resources has been eagerly waited for a long time as a computing utility. It helps users to store their data in the cloud and...
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Injection of Transient Faults Using Electromagnetic Pulses -Practical Results on a Cryptographic System
March 5, 2012, 12:00am PST
This paper considers the use of magnetic pulses to inject transient faults into the calculations of a RISC micro-controller running the AES algorithm. A magnetic coil is used to generate the...
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Outsider-Anonymous Broadcast Encryption With Sublinear Ciphertexts
March 14, 2012, 12:00am PDT
In the standard setting of broadcast encryption, information about the receivers is transmitted as part of the ciphertext. In several broadcast scenarios, however, the identities of the users...
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Biclique Attack of the Full ARIA-256
January 8, 2012, 12:00am PST
The ARIA block cipher was designed by a group of Korean experts in 2003, and was standardized as the Korean Standard in 2004. ARIA supports key length of 128,192 and 256 bits, these versions of...
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A New Remote Data Integrity Checking Scheme for Cloud Storage
January 17, 2012, 12:00am PST
Cloud storage services enable user to enjoy high-capacity and high-quality storage with less overhead, but it also brings many potential threats, for example, data integrality, data availability...
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A First-Order Leak-Free Masking Countermeasure
January 18, 2012, 12:00am PST
One protection of cryptographic implementations against side-channel attacks is the masking of the sensitive variables. In this paper, the authors present a first-order masking that does not leak...
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On the Exact Security of Schnorr-Type Signatures in the Random Oracle Model
January 19, 2012, 12:00am PST
The Schnorr signature scheme [Sch89,Sch91], derived from the Schnorr identification scheme (an honest-verifier zero-knowledge proof of knowledge of a discrete logarithm) through the Fiat-Shamir...
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Automatic Quantification of Cache Side-Channels
February 16, 2012, 12:00am PST
The latency gap between caches and main memory has been successfully exploited for recovering sensitive input to programs, such as cryptographic keys from implementation of AES and RSA. So far,...
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Single-Block Collision Attack on MD5
January 29, 2012, 12:00am PST
In 2010, Tao Xie and Dengguo Feng [XF10] constructed the first single-block collision for MD5 consisting of two 64-byte messages that have the same MD5 hash. Details of their attack, developed...
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Stitch-256: A New Dedicated Cryptographic Hash Function
January 26, 2012, 12:00am PST
Recent progress in cryptanalysis on cryptographic hash functions has shown that the most of the hash functions based on the design principles of MD4 are susceptible to differential attack. This...
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Beating Shannon Requires BOTH Efficient Adversaries and Non-Zero Advantage
February 5, 2012, 12:00am PST
In this paper, the authors formally show a well-known (but not well documented) fact that in order to beat the famous Shannon lower bound on key length for one-time-secure encryption, one must...
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Randomized Partial Checking Revisited
February 13, 2012, 12:00am PST
The authors study mix-nets with Randomized Partial Checking (RPC) as proposed by Jakobsson, Juels, and Rivest. RPC is a technique to verify the correctness of an execution both for Chaumian and...
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Particularly Friendly Members of Family Trees
February 18, 2012, 12:00am PST
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...
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Magnitude Squared Coherence Based SCA
March 12, 2012, 12:00am PDT
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....
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Remarks On-An Ideal Multi-Secret Sharing Scheme Based on MSP
December 12, 2011, 12:00am PST
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...
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Security of Feistel Schemes With New and Various Tools
March 8, 2012, 12:00am PST
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...
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A Digital Signature Scheme for Long-Term Security
February 27, 2012, 12:00am PST
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...
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Client-Server Authentication Using Pairings
March 20, 2012, 12:00am PDT
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...
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Circular Chosen-Ciphertext Security With Compact Ciphertexts
March 22, 2012, 12:00am PDT
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...
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The Joint Signature and Encryption Revisited
March 23, 2012, 12:00am PDT
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,...
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Toward Practical Group Encryption
March 23, 2012, 12:00am PDT
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...
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Fast Embedded Software Hashing
March 23, 2012, 12:00am PDT
The authors present new software speed records for several popular hash functions on low-end 8-bit AVR microcontrollers. Target algorithms include widely deployed hash functions like SHA-1 and...
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Hybrid Encryption in the Multi-User Setting
March 20, 2012, 12:00am PDT
This paper presents an attack in the multi-user setting on various publickey encryption schemes standardized in IEEE 1363a, SECG SEC 1 and ISO 18033-2. The multi-user setting is a security model...
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New Construction of Perfect Sequence Set and Low Correlation Zone Sequence Set
March 22, 2012, 12:00am PDT
For a given binary ideal autocorrelation sequence, the authors construct a perfect sequence set by changing a few bits of the sequence. The set has a large size with respect to the period of its...
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New Constructions of Low Correlation Sequences With High Linear Complexity
March 24, 2012, 12:00am PDT
In this paper, the authors propose a new concept named similar-bent function and they present two general methods to construct balanced sequences with low correlation by using similar-bent...
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Differential Propagation Analysis of Keccak
March 14, 2012, 12:00am PDT
The goal of cryptanalysis is to assess the security of cryptographic primitives. Finding attacks or properties not present in ideal instances typically contributes to the cryptanalysis of a given...
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Approaches for the Performance Increasing of Software Implementation of Integer Multiplication in Prime Fields
March 30, 2012, 12:00am PDT
The authors have proposed the approach to increase performance of software implementation of finite field multiplication algorithm, for 32-bit and 64-bit platforms. The approach is based on...
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Adaptive and Concurrent Secure Computation From New Notions of Non-Malleability
November 10, 2011, 12:00am PST
The authors present a unified framework for obtaining general secure computation that achieves adaptive-Universally Composable (UC)-security. Their framework captures essentially all previous...
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Random Number Generation Based on Oscillatory Metastability in Ring Circuits
November 25, 2011, 12:00am PST
Random number generator designs are discussed, which utilize oscillatory metastability, induced by switching between two stable states of ring-connected digital gates. For a short time after the...
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Collision for 75-Step SHA-1: Intensive Parallelization With GPU
November 29, 2011, 12:00am PST
The authors present a brief report on the collision search for the reduced SHA-1. With a few improvements to their previous work, directed at efficient parallelization on a GPU cluster, they...
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McOE: A Family of Almost Foolproof On-Line Authenticated Encryption Schemes
March 2, 2012, 12:00am PST
On-Line Authenticated Encryption (OAE) combines privacy with data integrity and is on-line computable. Most block cipher-based schemes for Authenticated Encryption can be run on-line and are...
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Cryptographic Analysis of All 4 X 4-Bit S-Boxes
July 12, 2011, 12:00am PDT
The authors present cryptanalytic results of an exhaustive search of all 16! bijective 4-bit S-Boxes. Previously affine equivalence classes have been exhaustively analyzed in 2007 work by Leander...
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Framework for Security Proofs for On-Demand Routing Protocols in Multi-Hop Wireless Networks
May 6, 2011, 12:00am PDT
The authors present a framework for security proofs for on-demand routing protocols. The framework relies on the composable cryptographic library by Backes, Pfitzmann and Waidner (BPW). The idea...
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Cryptanalysis and Improvement of an Efficient CCA Secure PKE Scheme
May 7, 2011, 12:00am PDT
Recently in Chinese Journal of Computers, Kang et al. proposed an efficient CCA secure Public Key Encryption (PKE) scheme, and claimed that it is more efficient in the public/private keys than the...
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Secure Single Sign-On and Web Authentication
May 16, 2011, 12:00am PDT
Single sign-on solutions allow users to sign on only once and have their identities automatically verified by each application or service they want to access. There are few practical and secure...
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Algebraic Cryptanalysis of the Round-Reduced and Side Channel Analysis of the Full PRINTCipher-48
May 31, 2011, 12:00am PDT
In this paper, the authors analyze the recently proposed light-weight block cipher PRINTCipher. Applying algebraic methods and SAT-solving they are able to break 8 rounds of PRINTCipher-48 with...
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