Results 81 to 90 of about 9,083 (227)

Cryptanalysis of Keyword Confidentiality in a Searchable Public‐Key Encryption Scheme Against Malicious Server

IET Information Security, Volume 2025, Issue 1, 2025.
Public‐key authenticated encryption with keyword search (PAEKS) is a novel cryptographic primitive to resist against keyword‐guessing attacks (KGAs) and preserve the privacy of keywords in both ciphertexts and trapdoors. Recently, a designated‐server PAEKS (dPAEKS) scheme was proposed to withstand KGAs.
Nan Zhang, Baodong Qin, Dong Zheng, Xueqin Liang   +3 more
wiley   +1 more source

Yoyo Cryptanalysis Against Reduced‐Round L‐Feistel Structure for Recovering the Secret Components

IET Information Security, Volume 2025, Issue 1, 2025.
L‐Feistel structure is a new iterative block cipher structure and unifies the Feistel structure and the Lai–Massey structure while maintaining the similarity of encryption and decryption. In this study, we present the first yoyo cryptanalysis against the L‐Feistel structure to evaluate the security under structural attack and give the method to recover
Jiyan Zhang, Yuxin Niu, Zhen Shi, Ting Cui, Richard Jiang   +4 more
wiley   +1 more source

Security analysis of an encryption scheme based on nonpositional polynomial notations

Open Engineering, 2016
The aim of the research was to conduct a cryptographic analysis of an encryption scheme developed on the basis of nonpositional polynomial notations to estimate the algorithm strength. Nonpositional polynomial notations (NPNs) are residue number systems (
Kapalova Nursulu, Dyusenbayev Dilmukhanbet   +1 more
doaj   +1 more source

Differential Cryptanalysis of KHF [PDF]

, 1998
Bakhtiari et al recently proposed a fast message authentication primitive called KHF. This paper shows that KHF is highly vulnerable to differential cryptanalysis: it can be broken with about 37 chosen message queries. This suggests that the KHF design should be reconsidered.
openaire   +1 more source

A New Method for Constructing Integral‐Resistance Matrix for 5‐Round AES

IET Information Security, Volume 2025, Issue 1, 2025.
A powerful theory for evaluating block ciphers against integral distinguishers was introduced by Hebborn et al. at ASIACRYPT 2021. To show the integral‐resistance property for a block cipher, their core idea is to construct a full‐rank integral‐resistance matrix. However, their method does not work practically for 5‐round AES due to the large S‐box and
Fanyang Zeng, Tian Tian, Qichun Wang
wiley   +1 more source

Differential cryptanalysis of symmetric primitives

, 2018
We cryptanalyze several symmetric encryption and hashing algorithms. A central factor in the security of symmetric cryptographic algorithms is the resistance of their core building block, the primitive, against cryptanalytic attacks such as differential, linear, and algebraic cryptanalysis.
openaire   +1 more source

Differential Cryptanalysis of Nimbus [PDF]

, 2002
Nimbus is a block cipher submitted as a candidate to the NESSIE project by Alexis Machado. Like many other ciphers Nimbus combines multiplication operations with XOR operations, a common technique to protect against various kinds of cryptanalysis.In this paper we present two new differential properties of multiplication operations with probability ...
openaire   +2 more sources

Cryptanalysis on Two Kinds of Number Theoretic Pseudo‐Random Generators Using Coppersmith Method

IET Information Security, Volume 2025, Issue 1, 2025.
Pseudo‐random number generator (PRNG) is a type of algorithm that generates a sequence of random numbers using a mathematical formula, which is widely used in computer science, such as simulation, modeling applications, data encryption, et cetera. The efficiency and security of PRNG are closely related to its output bits at each iteration.
Ran Zhang, Jingguo Bi, Lixiang Li, Haipeng Peng, Qichun Wang   +4 more
wiley   +1 more source

Impossible 4-Tuple Attack: A New Mixture-Based Cryptanalysis Applied to Reduced-Round AES-128

IEEE Access
Mixture differential cryptanalysis is a powerful technique for evaluating the robustness of Substitution-Permutation Network (SPN)-structured block ciphers, including the Advanced Encryption Standard (AES).
Masroor Hajari, Mahmoud Salmasizadeh, Javad Mohajeri, Siavash Ahmadi, Atiyeh Mirzaie   +4 more
doaj   +1 more source

Best Known Fast Correlation Attack on SNOW 3G Based on a New Insight

IET Information Security, Volume 2025, Issue 1, 2025.
The well‐known SNOW 3G stream cipher serves as the core of 3GPP confidentiality and integrity algorithms UEA 2 and UIA2 for universal mobile telecommunications system (UMTS) and long term evolution (LTE) networks. Recently, Gong and Zhang gave two linear approximations of SNOW 3G with correlation 2−20.48, and then proposed a fast correlation attack on ...
Xinhai Wang, Lin Ding, Jiang Wan, Zhengting Li, Zheng Wu, Jiwei Tian   +5 more
wiley   +1 more source