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Most modern cryptographic systems, such as RSA and the Diffie-Hellman Key Exchange, rely on "trapdoor" mathematical functions that are presumed to be computationally difficult with existing tools. However, quantum computers will be able to…

密码学与安全 · 计算机科学 2025-05-15 Alexander Meyer

Minimum achievable complexity (MAC) for a maximum likelihood (ML) performance-achieving detection algorithm is derived. Using the derived MAC, we prove that the conventional sphere decoding (SD) algorithms suffer from an inherent weakness…

信息论 · 计算机科学 2021-09-21 Mohammad Neinavaie , Mostafa Derakhtian , Sergiy A. Vorobyov

We consider constructing capacity-achieving linear codes with minimum message size for private information retrieval (PIR) from $N$ non-colluding databases, where each message is coded using maximum distance separable (MDS) codes, such that…

信息论 · 计算机科学 2020-01-24 Ruida Zhou , Chao Tian , Hua Sun , Tie Liu

In this paper we provide secrecy metrics applicable to physical-layer coding techniques with finite blocklengths over Gaussian and fading wiretap channel models. Our metrics go beyond some of the known practical secrecy measures, such as…

密码学与安全 · 计算机科学 2015-09-24 Willie K. Harrison , Dinis Sarmento , João P. Vilela , Marco Gomes

The performance of ``typical set (pairs) decoding'' for ensembles of Gallager's linear code is investigated using statistical physics. In this decoding, error happens when the information transmission is corrupted by an untypical noise or…

无序系统与神经网络 · 物理学 2009-11-07 Yoshiyuki Kabashima , Kazutaka Nakamura , Jort van Mourik

Quantum computers can break the RSA and El Gamal public-key cryptosystems, since they can factor integers and extract discrete logarithms. If we believe that quantum computers will someday become a reality, we would like to have…

密码学与安全 · 计算机科学 2010-10-19 Hang Dinh , Cristopher Moore , Alexander Russell

Encoding in a high-dimensional Hilbert space improves noise resilience in quantum information processing. This approach, however, may result in cross-mode coupling and detection complexities, thereby reducing quantum cryptography…

量子物理 · 物理学 2025-10-30 Amit Kam , Kfir Sulimany , Shai Tsesses , Uzi Pereg

This paper provides new and improved Singleton-like bounds for Lee metric codes over integer residue rings. We derive the bounds using various novel definitions of generalized Lee weights based on different notions of a support of a linear…

信息论 · 计算机科学 2023-07-13 Jessica Bariffi , Violetta Weger

In this paper, new index coding problems are studied, where each receiver has erroneous side information. Although side information is a crucial part of index coding, the existence of erroneous side information has not yet been considered.…

信息论 · 计算机科学 2019-09-19 Jae-Won Kim , Jong-Seon No

The capacity of symmetric, neighboring and consecutive side-information single unicast index coding problems (SNC-SUICP) with number of messages equal to the number of receivers was given by Maleki, Cadambe and Jafar. For these index coding…

信息论 · 计算机科学 2017-05-17 Mahesh Babu Vaddi , B. Sundar Rajan

In network communications, information transmission often encounters wiretapping attacks. Secure network coding is introduced to prevent information from being leaked to adversaries. The investigation of performance bounds on the numbers of…

信息论 · 计算机科学 2015-05-07 Xuan Guang , Jiyong Lu , Fang-Wei Fu

We propose a low complexity complex valued Sphere Decoding (CV-SD) algorithm, referred to as Circular Sphere Decoding (CSD) which is applicable to multiple-input multiple-output (MIMO) systems with arbitrary two dimensional (2D)…

信息论 · 计算机科学 2016-11-17 Hwanchol Jang , Saeid Nooshabadi , Kiseon Kim , Heung-No Lee

We give a decoding algorithm for a class of error-correcting codes, which can be used in the DHH-cryptosystem, which is a candidate for post-quantum cryptography, since it is of McEliece type. Furthermore, we implement the encryption and…

密码学与安全 · 计算机科学 2023-03-20 Carolin Hannusch , Giuseppe Filippone

One of the founding results of lattice based cryptography is a quantum reduction from the Short Integer Solution problem to the Learning with Errors problem introduced by Regev. It has recently been pointed out by Chen, Liu and Zhandry that…

量子物理 · 物理学 2023-11-01 André Chailloux , Jean-Pierre Tillich

In the bounded retrieval model, the adversary can leak a certain amount of information from the message sender's computer (e.g., 10 percent of the hard drive). Bellare, Kane and Rogaway give an efficient symmetric encryption scheme in the…

密码学与安全 · 计算机科学 2023-07-18 Ben Morris , Hans Oberschelp , Hamilton Samraj Santhakumar

The existence of quantum uncertainty relations is the essential reason that some classically impossible cryptographic primitives become possible when quantum communication is allowed. One direct operational manifestation of these…

量子物理 · 物理学 2013-12-09 Omar Fawzi , Patrick Hayden , Pranab Sen

Bogdanov and Lee suggested a homomorphic public-key encryption scheme based on error correcting codes. The underlying public code is a modified Reed-Solomon code obtained from inserting a zero submatrix in the Vandermonde generating matrix…

密码学与安全 · 计算机科学 2012-04-02 Valérie Gauthier , Ayoub Otmani , Jean-Pierre Tillich

In this paper, a new image encryption scheme using a secret key of 144-bits is proposed. In the substitution process of the scheme, image is divided into blocks and subsequently into color components. Each color component is modified by…

密码学与安全 · 计算机科学 2012-04-10 Narendra K Pareek

In this paper, we propose a new coded computing technique called "substitute decoding" for general iterative distributed computation tasks. In the first part of the paper, we use PageRank as a simple example to show that substitute decoding…

信息论 · 计算机科学 2018-05-17 Yaoqing Yang , Malhar Chaudhari , Pulkit Grover , Soummya Kar

We decode Reed-Solomon codes using soft information provided at the receiver. The Extended Euclidean Algorithm (EEA) is considered as an initial step to obtain an intermediate result. The final decoding result is obtained by interpolating…

信息论 · 计算机科学 2014-06-04 Mostafa Hosni Mohamed , Johan S. R. Nielsen , Martin Bossert