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Search Publications by: Rene Peralta (Fed)

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Displaying 26 - 40 of 40

Secure Sealed-Bid Online Auctions Using Discreet Cryptographic Proofs

May 10, 2013
Author(s)
Rene C. Peralta, Jose A. Montenegro, Javier Lopez
This work describes the design and implementation of an auction system using secure multiparty computation techniques. Our aim is to produce a system that is practical under actual eld constraints on computation, mem- ory, and communication. The underlying

Logic Minimization Techniques with Applications to Cryptology

April 1, 2013
Author(s)
Joan Boyar, Philip Matthews, Rene Peralta
A new technique for combinational logic optimization is described. The technique is a two-step process. In the rst step, the non-linearity of a circuit as measured by the number of non-linear gates it contains is reduced. The second step reduces the number

A public randomness service

July 21, 2011
Author(s)
Michael J. Fischer, Michaela Iorga, Rene Peralta
We argue for the deployment of sources of randomness on the Internet for promoting and enhancing electronic commerce. We describe, in rough detail, our planned implementation of such a source.

A depth-16 circuit for the AES S-box

June 17, 2011
Author(s)
Joan Boyar, Rene Peralta
New techniques for reducing the depth of circuits for cryptographic applications are described and applied to the AES S-box. These techniques also keep the number of gates quite small. The result, when applied to the AES S-box, is a circuit with depth 16

Status Report on the Second Round of the SHA-3 Cryptographic Hash Algorithm Competition

February 23, 2011
Author(s)
Meltem Sonmez Turan, Ray A. Perlner, Lawrence E. Bassham, William E. Burr, Dong H. Chang, Shu-jen H. Chang, Morris J. Dworkin, John M. Kelsey, Souradyuti Paul, Rene C. Peralta
The National Institute of Standards and Technology (NIST) opened a public competition on November 2, 2007 to develop a new cryptographic hash algorithm - SHA-3, which will augment the hash algorithms currently specified in the Federal Information

Security Considerations for Remote Electronic UOCAVA Voting

February 21, 2011
Author(s)
Nelson Hastings, Rene Peralta, Stefan Popoveniuc, Andrew Regenscheid
This whitepaper for the Technical Guidelines Development Committee (TGDC) identifies desirable security properties of remote electronic voting systems, potential benefits and threats to these systems, and current and emerging technical approaches for

On the shortest linear straight-line program for computing linear forms

August 29, 2008
Author(s)
Joan Boyar, Philip Matthews, Rene Peralta
We study the complexity of the Shortest Linear Program (SLP) problem, which is to the number of linear operations necessary to compute a set of linear forms. SLP is shown to be NP-hard. Furthermore, a special case of the corresponding decision problem is

Tight Bounds for the Multiplicative Complexity of Symmetric Functions

April 28, 2008
Author(s)
Joan Boyar, Rene Peralta
The multiplicative complexity of a Boolean function f is defined as the minimum number of binary conjunction (AND) gates required to construct a circuit representing f , when only exclusive-or, conjunction and negation gates may be used. This article

Concrete Multiplicative Complexity of Symmetric Functions

August 1, 2006
Author(s)
Joan Boyar, Rene Peralta
The multiplicative complexity of a Boolean function f is defined as the minimum number of binary conjunction (AND) gates required to construct a circuit representing f, when only exclusive-or, conjunction and negation gates may be used. This article

Dark Encounter Computations (And Musings on Biological Networks)

August 1, 2006
Author(s)
Rene C. Peralta
We describe two models of distributed computation in which the agents are anonymous finite-state sensors interacting through a communication network whose dynamics (in case the agents are mobile) and/or topology they do not control or even know about

Cryptographic Primitives Can Be Fragile

January 3, 2006
Author(s)
Rene C. Peralta
We show that a well-known coin-flipping protocol is breakable in the sense that one of the parties can pre-determine the result of the coin-flip. The way in which the protocol fails is illustrative of the fact that there are insecure ways of using secure

The Exact Multiplicative Complexity of the Hamming Weight Function

September 13, 2005
Author(s)
Rene C. Peralta, Joan Boyar
We consider the problem of computing the Hamming weight of an n-bit vector using a circuit with gates for addition and multiplication modulo 2 (alternatively, XOR and conjunction gates) only. The number of multiplications necessary and sufficient to build