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A Modified pqsigRM: RM Code-Based Signature Scheme
Code-based cryptography Courtois Finiasz
2019/6/12
We propose a novel signature scheme based on a modified Reed--Muller (RM) code, which reduces the signing complexity and key size compared to existing code-based signature schemes. This cheme is calle...
Evaluation of Code-based Signature Schemes
post-quantum cryptography code-based cryptography signature scheme
2019/5/23
Code-based cryptographic schemes recently raised to prominence as quantum-safe alternatives to the currently employed number-theoretic constructions, which do not resist quantum attacks. In this artic...
New Code-Based Privacy-Preserving Cryptographic Constructions
Code-based cryptography zero-knowledge range arguments
2019/5/21
Code-based cryptography has a long history but did suffer from periods of slow development. The field has recently attracted a lot of attention as one of the major branches of post-quantum cryptograph...
A Post-Quantum UC-Commitment Scheme in the Global Random Oracle Model from Code-Based Assumptions
Commitment Scheme Universal Composability
2019/2/27
In this work, we propose the first post-quantum UC-commitment scheme in the Global Random Oracle Model, where only one non-programmable random oracle is available. The security of our proposal is base...
Cryptanalysis of a New Code-based Signature Scheme with Shorter Public Key in PKC 2019
RQCS digital signatures cryptanalysis
2019/2/27
Song, Huang, Mu, and Wu proposed a new code-based signature scheme, the Rank Quasi-Cyclic Signature (RQCS) scheme (PKC 2019, Cryptology ePrint Archive 2019/053), which is based on an IND-CCA2 KEM sche...
A New Code-based Signature Scheme with Shorter Public Key
Post-Quantum Cryptography Rank Metric Codes Digital Signatures
2019/1/26
Code-based signature has been believed to be a useful authentication tool for post-quantum cryptography. There have been some attempts to construct efficient code-based signatures; however, existing c...
Error Amplification in Code-based Cryptography
post-quantum cryptography MDPC timing attack
2019/1/2
Code-based cryptography is one of the main techniques enabling cryptographic primitives in a post-quantum scenario. In particular, the MDPC scheme is a basic scheme from which many other schemes have ...
Cryptanalysis of a code-based one-time signature
Post-Quantum Cryptography Coding Theory Digital Signature
2018/12/20
In 2012, Lyubashevsky introduced a new framework for building lattice-based signature schemes without resorting to any trapdoor (such as GPV [6] or NTRU [8]). The idea is to sample a set of short latt...
On a Rank-Metric Code-Based Cryptosystem with Small Key Size
code-based cryptography rank-metric codes interleaving
2018/12/19
A repair of the Faure-Loidreau (FL) public-key code-based cryptosystem is proposed.The FL cryptosystem is based on the hardness of list decoding Gabidulin codes which are special rank-metric codes. We...
Code-based Cryptosystem from Quasi-Cyclic Elliptic Codes
code-based cryptography post quantum cryptograp elliptic code
2018/12/6
With the fast development of quantum computation, code based cryptography arises public concern as a candidate of post quantum cryptography. However, the large key-size becomes a main drawback such th...
We present here Wave the first ``hash-and-sign'' code-based signature scheme which strictly follows the GPV strategy [GPV08]. It uses the family of ternary generalized (U,U+V)(U,U+V) codes. We prove t...
A polynomial attack on a NIST proposal: RankSign, a code-based signature in rank metric
public-key cryptography NIST
2018/4/17
RankSign is a code-based signature scheme proposed to the NIST competition for post-quantum cryptography [AGHRZ17]. It is based on the rank metric and enjoys remarkably small key sizes, about 10KBytes...
A toolbox for software optimization of QC-MDPC code-based cryptosystems
Code-based cryptosystems MDPC
2018/1/2
The anticipated emergence of quantum computers in the foreseeable future drives the cryptographic community to start considering cryptosystems, which are based on problems that remain intractable even...
A tight security reduction in the quantum random oracle model for code-based signature schemes
Quantum Random Oracle Quantum-Safe Cryptography Code-Based Cryptography
2017/9/28
Quantum secure signature schemes have a lot of attention recently, in particular because of the NIST call to standardize quantum safe cryptography. However, only few signature schemes can have concret...
Current widely-used key-exchange (KE) mechanisms will be vulnerable to quantum attacks when sufficiently strong quantum computers become available. Therefore, devising quantum-resistant replacements t...