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In this work, a scalable algorithm for the approximate quantum state preparation problem is proposed, facing a challenge of fundamental importance in many topic areas of quantum computing. The algorithm uses a variational quantum circuit…

Quantum Physics · Physics 2025-03-19 Giacomo Belli , Marco Mordacci , Michele Amoretti

Semantic encoders and decoders for digital semantic communication (SC) often struggle to adapt to variations in unpredictable channel environments and diverse system designs. To address these challenges, this paper proposes a novel…

Signal Processing · Electrical Eng. & Systems 2025-03-20 Yongjeong Oh , Joohyuk Park , Jinho Choi , Jihong Park , Yo-Seb Jeon

In video coding, it is expected that the encoder could adaptively select the encoding parameters (e.g., quantization parameter) to optimize the bit allocation to different sources under the given constraint. However, in hybrid video coding,…

Multimedia · Computer Science 2015-11-17 Chao Wang , Xuanqin Mou , Lei Zhang

It is designed a new quantum cryptography protocol that generates various secret and secure keys of the same size of the transmitted qubits, implying zero information losses between the interlocutors. Besides, generates key swapping between…

Quantum Physics · Physics 2013-11-13 Eduin H Serna

In this paper, we use a linear programming (LP) optimization approach to evaluate the equivocation for a wiretap channel where the main channel is noiseless, and the wiretap channel is a binary symmetric channel (BSC). Using this technique,…

Information Theory · Computer Science 2024-01-17 Ali Nikkhah , Morteza Shoushtari , Bahareh Akhbari , Willie K. Harrison

We introduce NSABC/w -- Nice-Structured Algebraic Block Cipher using w-bit word arithmetic, a 4w-bit analogous of Skipjack [NSA98] with 5w-bit key. The Skipjack's internal 4-round Feistel structure is replaced with a w-bit, 2-round cascade…

Cryptography and Security · Computer Science 2011-05-18 Alice Nguyenova-Stepanikova , Tran Ngoc Duong

Traditional covert transmission (CT) approaches have been hindering CT application while blockchain technology offers new avenue. Current blockchain-based CT approaches require off-chain negotiation of critical information and often…

Cryptography and Security · Computer Science 2024-05-08 Zhenshuai Yue , Haoran Zhu , Xiaolin Chang , Jelena Mišić , Vojislav B. Mišić , Junchao Fan

We consider an Internet of Battlefield Things (IoBT) system consisting of multiple devices that want to securely communicate with each other during a mission in the presence of an adversary with unbounded computational power. The adversary…

Cryptography and Security · Computer Science 2025-08-05 Mohammad Moltafet , Hamid R. Sadjadpour , Zouheir Rezki

While NLP models significantly impact our lives, there are rising concerns about privacy invasion. Although federated learning enhances privacy, attackers may recover private training data by exploiting model parameters and gradients.…

Artificial Intelligence · Computer Science 2024-10-23 Mengjiao Zhang , Jia Xu

Blocking is a crucial step in large-scale entity matching but often requires significant manual engineering from an expert for each new dataset. Recent work has show that deep learning is state-of-the-art and has great potential for…

Databases · Computer Science 2023-12-27 Nils Barlaug

The security of patient information is important during the transfer of medical data. A hybrid spatial domain watermarking algorithm that includes encryption, integrity protection and steganography is proposed to strengthen the information…

Cryptography and Security · Computer Science 2021-10-20 Ahmad Nagm , Mohammed Safy Elwan

The sliding square model is a widely used abstraction for studying self-reconfigurable robotic systems, where modules are square-shaped robots that move by sliding or rotating over one another. In this paper, we propose a novel distributed…

Computational Geometry · Computer Science 2025-09-15 Irina Kostitsyna , David Liedtke , Christian Scheideler

This paper proposes to put forward an innovative algorithm for symmetric key block cipher named as "Triple Prime Symmetric Key Block Cipher with Variable Key-Spaces (TPSKBCVK)" that employs triple prime integers as private key-spaces of…

Cryptography and Security · Computer Science 2012-03-19 Abhijit Chowdhury , Angshu Kumar Sinha , Saurabh Dutta

The control of the cryptography is more than ever a recurrent issue. As the current international regulation does not apply in the signatory countries, the concept of enforcing backdoors in encryption system is reborn with more strength.…

Cryptography and Security · Computer Science 2020-01-03 Eric Filiol

A novel method for access control with a secret key is proposed to protect models from unauthorized access in this paper. We focus on semantic segmentation models with the vision transformer (ViT), called segmentation transformer (SETR).…

Computer Vision and Pattern Recognition · Computer Science 2022-08-30 Teru Nagamori , Ryota Iijima , Hitoshi Kiya

Syllables are compositional units of spoken language that efficiently structure human speech perception and production. However, current neural speech representations lack such structure, resulting in dense token sequences that are costly…

Computation and Language · Computer Science 2025-03-04 Cheol Jun Cho , Nicholas Lee , Akshat Gupta , Dhruv Agarwal , Ethan Chen , Alan W Black , Gopala K. Anumanchipalli

Large-scale embedding-based retrieval (EBR) is the cornerstone of search-related industrial applications. Given a user query, the system of EBR aims to identify relevant information from a large corpus of documents that may be tens or…

Information Retrieval · Computer Science 2023-02-20 Yukang Gan , Yixiao Ge , Chang Zhou , Shupeng Su , Zhouchuan Xu , Xuyuan Xu , Quanchao Hui , Xiang Chen , Yexin Wang , Ying Shan

Text-to-image (T2I) diffusion models are widely adopted for their strong generative capabilities, yet remain vulnerable to backdoor attacks. Existing attacks typically rely on fixed textual triggers and single-entity backdoor targets,…

Cryptography and Security · Computer Science 2026-05-28 Tianxin Chen , Wenbo Jiang , Hongqiao Chen , Zhirun Zheng , Cheng Huang

One Achilles heal of classical cryptographic communication systems is that secret communication can only take place after a key is communicated in secret over a totally secure communication channel. Here comes quantum key distribution which…

Cryptography and Security · Computer Science 2009-09-24 Catalin Anghel

As 6G networks evolve, spectrum assets require flexible, dynamic, and efficient utilization, motivating blockchain based spectrum securitization. Existing approaches based on ERC404 style hybrid token models rely on frequent minting and…

Information Retrieval · Computer Science 2026-01-23 Zhixian Zhou , Bin Chen , Zhe Peng , Zhiming Liang , Ruijun Wu , Chen Sun , Shuo Wang
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