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Search Publications by: Daniel Smith-Tone (Fed)

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Displaying 26 - 50 of 86

Status Report on the Second Round of the NIST Post-Quantum Cryptography Standardization Process

July 22, 2020
Author(s)
Dustin Moody, Gorjan Alagic, Daniel C. Apon, David A. Cooper, Quynh H. Dang, John M. Kelsey, Yi-Kai Liu, Carl A. Miller, Rene C. Peralta, Ray A. Perlner, Angela Y. Robinson, Daniel C. Smith-Tone, Jacob Alperin-Sheriff
The National Institute of Standards and Technology is in the process of selecting one or more public-key cryptographic algorithms through a public, competition-like process. The new public-key cryptography standards will specify one or more additional

Rainbow Band Separation is Better than we Thought

June 10, 2020
Author(s)
Daniel Smith-Tone, Ray Perlner
Currently the National Institute of Standards and Technology (NIST) is engaged in a post- quantum standardization effort, analyzing numerous candidate schemes to provide security against the advancing threat of quantum computers. Among the candidates in

Combinatorial Rank Attacks Against the Rectangular Simple Matrix Encryption Scheme

April 10, 2020
Author(s)
Dustin Moody, Ray A. Perlner, Daniel C. Smith-Tone, Daniel C. Apon, Javier Verbel
In 2013, Tao et al. introduced the ABC Simple Matrix Scheme for Encryption, a multivariate public key encryption scheme. The scheme boasts great efficiency in encryption and decryption, though it suffers from very large public keys. It was quickly noted

A Nonlinear Multivariate Cryptosystem Based on a Random Linear Code

November 24, 2019
Author(s)
Daniel C. Smith-Tone, Cristina Tone
We introduce a new technique for building multivariate encryption schemes based on random linear codes. The construction is versatile, naturally admitting multiple modifications. Among these modifications is an interesting embedding modifier -- any

Practical Cryptanalysis of k-ary C*

July 18, 2019
Author(s)
Daniel C. Smith-Tone
Recently, an article by Felke appeared in Cryptography and Communications discussing the security of biquadratic $C^*$ and a further generalization, k-ary $C^*$. The article derives lower bounds for the complexity of an algebraic attack, directly inverting

Extracting Linearization Equations from Noisy Sources

February 15, 2019
Author(s)
Daniel C. Smith-Tone
This note was originally written under the name "On the Security of HMFEv" and was submitted to PQCrypto 2018. The author was informed by the referees of his oversight of an eprint work of the same name by Hashimoto, see eprint article /2017/689/, that

Status Report on the First Round of the NIST Post-Quantum Cryptography Standardization Process

January 31, 2019
Author(s)
Gorjan Alagic, Jacob M. Alperin-Sheriff, Daniel Apon, David Cooper, Quynh H. Dang, Carl Miller, Dustin Moody, Rene Peralta, Ray Perlner, Angela Robinson, Daniel Smith-Tone, Yi-Kai Liu
The National Institute of Standards and Technology is in the process of selecting one or more public-key cryptographic algorithms through a public competition-like process. The new public- key cryptography standards will specify one or more additional

HFERP -- A New Multivariate Encryption Scheme

April 1, 2018
Author(s)
Yashuhiko Ikematsu, Ray Perlner, Daniel Smith-Tone, Tsuyoshi Takagi, Jeremy Vates
In 2016, Yasuda et al.presented a new multivariate encryption technique based on the Square and Rainbow primitives and utilizing the plus modifier that they called SRP. The scheme achieved a smaller blow-up factor between the plaintext space and ciphertext

Improved Cryptanalysis of HFEv- via Projection

April 1, 2018
Author(s)
Jintai Ding, Ray Perlner, Albrecht R. Petzoldt, Daniel Smith-Tone
The HFEv- signature scheme is one of the most studied multivariate schemes and one of the major candidates for the upcoming standardization of post-quantum digital signature schemes. In this paper, we propose three new attack strategies against HFEv-, each

Total Break of the SRP Encryption Scheme

December 23, 2017
Author(s)
Ray A. Perlner, Albrecht R. Petzoldt, Daniel C. Smith-Tone
Multivariate Public Key Cryptography (MPKC) is one of the main candidates for secure communication in a post-quantum era. Recently, Yasuda and Sakurai proposed in [7] a new multivariate encryption scheme called SRP, which combines the Square encryption

An Updated Security Analysis of PFLASH

June 4, 2017
Author(s)
Ryann Cartor, Daniel Smith-Tone
One application in post-quantum cryptography that appears especially difficult is security for low-power or no-power devices. One of the early champions in this arena was SFLASH, which was recommended by NESSIE for implementation in smart cards due to its