(Efficient) Universally Composable Oblivious Transfer Using a Minimal Number...
We continue the line of work initiated by Katz (Eurocrypt 2007) on using tamper-proof hardware for universally composable secure computation. As our main result, we show an efficient oblivious-transfer...
View ArticleTrust Views for the Web PKI, by Johannes Braun, Florian Volk, Johannes...
The steadily growing number of certication authorities (CAs) assigned to the Web Public Key Infrastructure (Web PKI) and trusted by current browsers imposes severe security issues. Apart from being...
View ArticleAnalogues of Velu's Formulas for Isogenies on Alternate Models of Elliptic...
Isogenies are the morphisms between elliptic curves, and are accordingly a topic of interest in the subject. As such, they have been well-studied, and have been used in several cryptographic...
View ArticleDoes My Device Leak Information? An a priori Statistical Power Analysis of...
The development of a leakage detection testing methodology for the side-channel resistance of cryptographic devices is an issue that has received recent focus from standardisation bodies such as NIST....
View ArticleDetecting Hidden Leakages, by Amir Moradi and Sylvain Guilley and Annelie Heuser
Reducing the entropy of the mask is a technique which has been proposed to mitigate the high performance overhead of masked software implementations of symmetric block ciphers. Rotating S-box Masking...
View ArticleA Study of Goldbach's conjecture and Polignac's conjecture equivalence...
The famous Goldbach's conjecture and Polignac's conjecture are two of all unsolved problems in the field of number theory today. As well known, the Goldbach's conjecture and the Polignac's conjecture...
View ArticleA generic view on trace-and-revoke broadcast encryption schemes, by Dennis...
At Eurocrypt 2011, Wee presented a generalization of threshold public key encryption, threshold signatures, and revocation schemes arising from threshold extractable hash proof systems. In particular,...
View ArticleHow to Keep a Secret: Leakage Deterring Public-key Cryptography, by Aggelos...
How is it possible to prevent the sharing of cryptographic functions? This question appears to be fundamentally hard to address since in this setting the owner of the key {\em is} the adversary: she...
View ArticleA new attack on RSA with a composed decryption exponent, by Abderrahmane...
In this paper, we consider an RSA modulus $N=pq$, where the prime factors $p$, $q$ are of the same size. We present an attack on RSA when the decryption exponent $d$ is in the form $d=Md_1+d_0$ where...
View ArticleUltralightweight cryptography for passive RFID system, by Umar Mujahid,...
RFID (Radio Frequency Identification) is one of the most growing technologies among the pervasive systems. Non line of sight capability makes RFID systems much faster than its other contending systems...
View ArticleWeakness of Several Identity-based Tripartite Authenticated Key Agreement...
Key agreement allows multi-parties exchanging public information to create a common secret key that is known only to those entities over an insecure network. In recent years, several identity-based...
View ArticlePushing the Limit of Non-Profiling DPA using Multivariate Leakage Model, by...
Profiling power attacks like Template attack and Stochastic attack optimize their performance by jointly evaluating the leakages of multiple sample points. However, such multivariate approaches are...
View ArticleSecure Floating-Point Arithmetic and Private Satellite Collision Analysis, by...
In this paper we show that it is possible and, indeed, feasible to use secure multiparty computation for calculating the probability of a collision between two satellites. For this purpose, we first...
View ArticlePower and Timing Side Channels for PUFs and their Efficient Exploitation, by...
This paper discusses combined modeling and side channel attacks on Strong Physical Unclonable Functions (Strong PUFs). We illustrate our method by the example of the two currently most secure (CCS...
View ArticleImproved Boomerang Attacks on Round-Reduced SM3 and BLAKE-256, by Dongxia Bai...
In this paper we study the security of hash functions SM3 and BLAKE-256 against boomerang attack. SM3 is designed by X. Wang et al. and published by Chinese Commercial Cryptography Administration...
View ArticleAutomatic Search for Differential Trails in ARX Ciphers (Extended Version),...
We propose a tool for automatic search for differential trails in ARX ciphers. By introducing the concept of a partial difference distribution table (pDDT) we extend Matsui's algorithm, originally...
View ArticleExploiting Collisions in Addition Chain-based Exponentiation Algorithms Using...
Public key cryptographic algorithms are typically based on group exponentiation algorithms where the exponent is private. A collision attack is typically where an adversary seeks to determine whether...
View ArticleMultiple-Use Transferable E-Cash , by Pratik Sarkar
Ecash is a concept of electronic cash which would allow users to carry money in form of digital coins. Transaction can be done both offline and online in absence of a third party/financial institution....
View ArticleWeaknesses in a Recently Proposed RFID Authentication Protocol, by Mete...
Many RFID authentication protocols have been proposed to provide desired security and privacy level for RFID systems. Almost all of these protocols are based symmetric cryptography because of the...
View ArticleTightly-Secure Signatures From Lossy Identification Schemes, by Michel...
In this paper we present three digital signature schemes with tight security reductions. Our first signature scheme is a particularly efficient version of the short exponent discrete log based scheme...
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