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Improved Cryptanalysis of the KMOV Elliptic Curve Cryptosystem
public-key cryptography KMOV
2019/9/19
This paper presents two new improved attacks on the KMOV cryptosystem. KMOV is an encryption algorithm based on elliptic curves over the ring ZNZN where N=pqN=pq is a product of two large primes of eq...
Subterranean 2.0 designed by Daemen, Massolino and Rotella is a Round 1 candidate of the NIST Lightweight Cryptography Standardization process. In the official document of Subterranean 2.0, the design...
Cryptanalysis of Round-Reduced KECCAK using Non-Linear Structures
KECCAK SHA-3 Hash function
2019/8/2
In this paper, we present new preimage attacks on KECCAK-384 and KECCAK-512 for 2, 3 and 4 rounds. The attacks are based on non-linear structures (structures that contain quadratic terms). These struc...
SipHash is a family of ARX-based MAC algorithms optimized for short inputs. Already, a lot of implementations and applications for SipHash have been proposed, whereas the cryptanalysis of SipHash stil...
Cryptanalysis of an Ultra lightweight Authentication Scheme based on Permutation Matrix Encryption for Internet of Vehicles
IoV security analysis matrix encryption
2019/7/23
Internet of Things (IoT) has various applications such as healthcare, supply chain, agriculture, etc. Using the Internet of Vehicles(IoV) to control traffic of the cities is one of the IoT application...
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 com...
Fast Correlation Attacks on Grain-like Small State Stream Ciphers and Cryptanalysis of Plantlet, Fruit-v2 and Fruit-80
Fast correlation attack Stream cipher Grain-like
2019/7/8
The fast correlation attack (FCA) is one of the most important cryptanalytic techniques against LFSR-based stream ciphers. In CRYPTO 2018, Todo et al. found a new property for the FCA and proposed a n...
Plantlet is a lightweight stream cipher designed by Mikhalev, Armknecht and M\"{u}ller in IACR ToSC 2017. It has a Grain-like structure with two state registers of size 40 and 61 bits. In spite of thi...
Distinguishers on round-reduced AES have attracted considerable attention in the recent years. Although the number of rounds covered in key-recovery attacks has not been increased since, subspace, yoy...
Cryptanalysis of Ring Homomorphic Encryption Schemes
homomorphic encryption schemes quantum computing key-recovery attack
2019/6/3
We analyze the structure of finite commutative rings with respect to its idempotent and nilpotent elements. Based on this analysis we provide a quantum-classical IND-CCA^1 attack for ring homomorphic ...
Improved Cryptanalysis of the AJPS Mersenne Based Cryptosystem
public-key cryptography Mersenne numbers LLL
2019/6/3
At Crypto 2018, Aggarwal, Joux, Prakash and Santha (AJPS) described a new public-key encryption scheme based on Mersenne numbers. Shortly after the publication of the cryptosystem, Beunardeau et al. d...
Cryptanalysis of a System Based on Twisted Reed–Solomon Codes
Code-based cryptography McEliece Cryptosystem Subfield Subcodes
2019/4/29
It was recently proved that twisted Reed--Solomon codes represent a family of codes which contain a large amount of MDS codes, non-equivalent to Reed--Solomon codes. As a consequence, they were propos...
Algebraic Cryptanalysis of STARK-Friendly Designs: Application to MARVELlous and MiMC
MARVELlous Jarvis Friday
2019/4/25
The block cipher Jarvis and the hash function Friday, both members of the MARVELlous family of cryptographic primitives, were recently proposed as custom designs aimed at addressing bottlenecks involv...
Cryptanalysis of Curl-P and Other Attacks on the IOTA Cryptocurrency
cryptocurrencies digital signatures hash functions
2019/4/3
We present attacks on the cryptography formerly used in the IOTA blockchain, including under certain conditions the ability to forge signatures. We developed practical attacks on IOTA's cryptographic ...
Yet Another Side Channel Cryptanalysis on SM3 Hash Algorithm
SM3 Side-channel Hash functions
2019/4/3
SM3, the Chinese standard hash algorithm inspired from SHA2, can be attacker by similar means than SHA2 up to an adaptation to its differences. But this kind of attack is based on targeting point of i...