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A Family of Fast Syndrome Based Cryptographic Hash Functions

Publications associées (46)

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Another Glance at Double-Length Hashing

Martijn Stam, Onur Özen

We propose a novel framework for blockcipher-based double-length hash functions by extending the recent generalization presented by Stam at FSE '09 for single-call hash functions. We focus on compression functions compressing 3n bits to 2n bits that use on ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2009

Secure communication using authenticated channels

Sylvain Pasini

Our main motivation is to design more user-friendly security protocols. Indeed, if the use of the protocol is tedious, most users will not behave correctly and, consequently, security issues occur. An example is the actual behavior of a user in front of an ...

EPFL2009

Multi-Stream Hashing on the PlayStation 3

Joppe Willem Bos, Dag Arne Osvik, Nathalie Casati

With process technology providing more and more transistors per chip, still following Moore's \law", processor designers have used a number of techniques to make those transistors useful. Lately they have started placing multiple processor cores on each ch ...

Springer2008

Hash-and-Sign with Weak Hashing Made Secure

Serge Vaudenay, Sylvain Pasini

Digital signatures are often proven to be secure in the random oracle model while hash functions deviate more and more from this idealization. Liskov proposed to model a weak hash function by a random oracle together with another oracle allowing to break s ...

Springer2007

An Optimal Non-Interactive Message Authentication Protocol

Serge Vaudenay, Sylvain Pasini

Vaudenay recently proposed a message authentication protocol which is interactive and based on short authenticated strings (SAS). We study here SAS-based non-interactive message authentication protocols (NIMAP). We start by the analysis of two popular non- ...

Springer2006

VSH, an efficient and provable collision-resistant hash function

Arjen Lenstra

We introduce VSH, very smooth hash, a new S-bit hash function that is provably collision-resistant assuming the hardness of finding nontrivial modular square roots of very smooth numbers modulo an S-bit composite. By very smooth, we mean that the smoothnes ...

Springer Verlag2006

Toward a secure JPEG

Touradj Ebrahimi, Frédéric Dufaux

In this paper, we propose a Secure JPEG, an open and flexible standardized framework to secure JPEG images. Its goal is to allow the efficient integration and use of security tools enabling a variety of security services such as confidentiality, integrity ...

2006

On the possibility of constructing meaningful hash collisions for public keys

Arjen Lenstra

It is sometimes argued that finding meaningful hash collisions might prove difficult. We show that for several common public key systems it is easy to construct pairs of meaningful and secure public key data that either collide or share other characteristi ...

2005

SECTOR: Secure Tracking of Node Encounters in Multi-hop Wireless Networks

Jean-Pierre Hubaux, Levente Buttyan, Srdan Capkun

In this paper we present SECTOR, a set of mechanisms for the secure verification of the time of encounters between nodes in multi-hop wireless networks. This information can be used notably to prevent wormhole attacks (without requiring any clock synchroni ...

2003

Ideal Hash Trees

Hash Trees with nearly ideal characteristics are described. These Hash Trees require no initial root hash table yet are faster and use significantly less space than chained or double hash trees. Insert, search and delete times are small and constant, indep ...

2001