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Search Publications by: Daniel Smith-Tone (Fed)

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Displaying 26 - 42 of 42

Key Recovery Attack for ZHFE

June 4, 2017
Author(s)
Daniel Cabarcas, Daniel Smith-Tone, Javier A. Verbel
At PQCRYPTO 2014, Porras, Baena and Ding introduced ZHFE, an interesting new technique for multivariate post-quantum encryption. The scheme is a generalization of HFE in which a single low degree polynomial in the central map is replaced by a pair of high

Key Recovery Attack on Cubic Simple Matrix Encryption

August 11, 2016
Author(s)
Ray Perlner, Dustin Moody, Daniel Smith-Tone
In the last few years multivariate public key cryptography has experienced an infusion of new ideas for encryption. Among these new strategies is the ABC Simple Matrix family of encryption schemes which utilize the structure of a large matrix algebra to

Report on Post-Quantum Cryptography

April 28, 2016
Author(s)
Lidong Chen, Stephen P. Jordan, Yi-Kai Liu, Dustin Moody, Rene C. Peralta, Ray A. Perlner, Daniel C. Smith-Tone
In recent years, there has been a substantial amount of research on quantum computers - machines that exploit quantum mechanical phenomena to solve mathematical problems that are difficult or intractable for conventional computers. If large-scale quantum

On the Differential Security of the HFEv - Signature Primitive

February 4, 2016
Author(s)
Ryann Cartor, Ryan Gipson, Daniel Smith-Tone, Jeremy Vates
Multivariate Public Key Cryptography (MPKC) is one of the most attractive post-quantum options for digital signatures in a wide array of applications. The history of multivariate signature schemes is tumultuous, however, and solid security arguments are

Security Analysis and Key Modification for ZHFE

February 4, 2016
Author(s)
Ray A. Perlner, Daniel C. Smith-Tone
ZHFE, designed by Porras et al., is one of the few promising candidates for a multivariate public-key encryption algorithm. In this article we extend and expound upon the existing security analysis on this scheme. We prove security against differential

The Number of Boolean Functions with Multiplicative Complexity 2

October 27, 2015
Author(s)
Magnus G. Find, Daniel C. Smith-Tone, Meltem Sonmez Turan
Multiplicative complexity is a complexity measure, which is defined as the minimum number of AND gates required to implement a given primitive by a circuit over the basis (AND, XOR, NOT), with an unlimited number of NOT and XOR gates. Implementations of

PFLASH - Secure Asymmetric Signatures on Smart Cards

July 21, 2015
Author(s)
Ming-Shing Chen, Bo-Yin Yang, Daniel Smith-Tone
We present PFLASH, an asymmetric digital signature scheme appropriate for smart card use. We present parameters for several security levels in this low resource environment and bootstrap many technical properties (including side-channel resistance) exposed

Improved Indifferentiability Security Bound for the JH Mode

February 15, 2015
Author(s)
Dustin Moody, Daniel C. Smith-Tone, Souradyuti Paul
Indifferentiability security of a hash mode of operation guarantees the mode's resistance against all generic attacks. It is also useful to establish the security of protocols that use hash functions as random functions. The JH hash function was one of the

Differential Properties of the HFE Cryptosystem

October 1, 2014
Author(s)
Taylor Daniels, Daniel Smith-Tone
Multivariate Public Key Cryptography (MPKC) has been put forth as a possible post-quantum family of cryptographic schemes. These schemes lack provable security in the reduction theoretic sense, and so their security against yet undiscovered attacks remains

The TriTon Transformation

August 27, 2012
Author(s)
Daniel C. Smith-Tone
Many new systems have been proposed which hide an easily invertible multivariate quadratic map in a larger structure by adding more variables and introducing some mixing of a random component to the structured system. While many systems which have been

Improved Indifferentiability Security Bound for the JH Mode

March 22, 2012
Author(s)
Dustin Moody, Souradyuti Paul, Daniel C. Smith-Tone
The JH hash function is one of the five fi nalists of the ongoing NIST SHA3 hash function competition. Despite several earlier attempts, and years of analysis, the indi fferentiability security bound of the JH mode has so far remained remarkably low, only

On the Differential Security of Multivariate Public Key Cryptosystems

November 29, 2011
Author(s)
Daniel C. Smith-Tone
Since the discovery of an algorithm for factoring and computing discrete logarithms in polynomial time on a quantum computer, the cryptographic community has been searching for an alternative for security in the approaching post-quantum world. One

Clean Agent Performance on Fires Exposed to an External Energy Source.

November 2, 1998
Author(s)
Kenneth D. Steckler, William L. Grosshandler, Daniel C. Smith-Tone, P Rivers
Work carried out over the last several years has shown that there can be a significant increase in the amount of agent required to extinguish and to prevent re-ignition of fires that are exposed to a continuous, external, energy source. This has