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Recently proliferated semantic communications (SC) aim at effectively transmitting the semantics conveyed by the source and accurately interpreting the meaning at the destination. While such a paradigm holds the promise of making wireless…

Cryptography and Security · Computer Science 2023-09-06 Xinghan Liu , Guoshun Nan , Qimei Cui , Zeju Li , Peiyuan Liu , Zebin Xing , Hanqing Mu , Xiaofeng Tao , Tony Q. S. Quek

Security is one of the major concerns of modern communication systems. Users demand a secure communication environment that provides privacy to the people while they are sharing messages to anyone. Privacy is a prime concern nowadays. This…

Cryptography and Security · Computer Science 2019-03-07 Akm. B. Haque , Md. A. Bari , S. S. Arman , FT. Progga

In this work we present the Secure Machine, SeM for short, a CPU architecture extension for secure computing. SeM uses a small amount of in-chip additional hardware that monitors key communication channels inside the CPU chip, and only acts…

Cryptography and Security · Computer Science 2018-03-13 Ofir Shwartz , Yitzhak Birk

Graph encryption schemes play a crucial role in facilitating secure queries on encrypted graphs hosted on untrusted servers. With applications spanning navigation systems, network topology, and social networks, the need to safeguard…

Cryptography and Security · Computer Science 2024-05-30 Seyni Kane , Anis Bkakria

Important document are being kept encrypted in remote servers. In order to retrieve these encrypted data, efficient search methods needed to enable the retrieval of the document without knowing the content of the documents In this paper a…

Cryptography and Security · Computer Science 2009-09-15 Maisa Halloush , Mai Sharif

In encrypted databases, sensitive data is protected from an untrusted server by encrypting columns using partially homomorphic encryption schemes, and storing encryption keys in a trusted client. However, encrypting columns and protecting…

Databases · Computer Science 2016-05-05 Kapil Vaswani , Ravi Ramamurthy , Ramarathnam Venkatesan

Hardware enclaves rely on a disjoint memory model, which maps each physical address to an enclave to achieve strong memory isolation. However, this severely limits the performance and programmability of enclave programs. While some prior…

This paper presents a spatial encryption technique for secured transmission of data in networks. The algorithm is designed to break the ciphered data packets into multiple data which are to be packaged into a spatial template. A secure and…

Cryptography and Security · Computer Science 2010-04-05 Sk. Sarif Hassan , Pabitra Pal Choudhury , Sugata Sanyal

Recent advancements in Large Language Models (LLMs) have transformed communication, yet their role in secure messaging remains underexplored, especially in surveillance-heavy environments. At the same time, many governments all over the…

Cryptography and Security · Computer Science 2025-04-15 Danilo Gligoroski , Mayank Raikwar , Sonu Kumar Jha

In recent years, insider threats and attacks have been increasing in terms of frequency and cost to the corporate business. The utilization of end-to-end encrypted instant messaging applications (WhatsApp, Telegram, VPN) by malicious…

Cryptography and Security · Computer Science 2024-06-14 Janardhan Kalikiri , Gaurav Varshney , Jaswinder Kour , Tarandeep Singh

With wide spread acceptance of virtualization, virtual machines (VMs) find their presence in various applications such as Network Address Translation (NAT) servers, firewall servers and MapReduce applications. Typically, in these…

Operating Systems · Computer Science 2019-09-27 Shesha Sreenivasamurthy , Ethan Miller

Adversaries with physical access to a target platform can perform cold boot or DMA attacks to extract sensitive data from the RAM. In response, several main-memory encryption schemes have been proposed to prevent such attacks. Also hardware…

Cryptography and Security · Computer Science 2016-12-13 Robert Buhren , Shay Gueron , Jan Nordholz , Jean-Pierre Seifert , Julian Vetter

The widening spectrum of applications and services provided by portable and embedded devices bring a new dimension of concerns in security. Most of those embedded systems (pay-TV, PDAs, mobile phones, etc...) make use of external memory. As…

Cryptography and Security · Computer Science 2011-11-09 R. Elbaz , L. Torres , G. Sassatelli , P. Guillemin , C. Anguille , M. Bardouillet , C. Buatois , J. B. Rigaud

In this paper it has been developed an algorithm for cryptography, using the Mellin's transform. Cryptography is very important to protect data to ensure that two people, using an insecure channel, may communicate in a secure way. In the…

Cryptography and Security · Computer Science 2014-01-08 Yeray Cachon Santana

Semantic communication allows the receiver to know the intention instead of the bit information itself, which is an emerging technique to support real-time human-machine and machine-to-machine interactions for future wireless…

Information Theory · Computer Science 2023-01-05 Zhaohui Yang , Mingzhe Chen , Gaolei Li , Yang Yang , Zhaoyang Zhang

This paper identifies an intrusion surveillance framework which provides an analyst with the ability to investigate and monitor cyber-attacks in a covert manner. Where cyber-attacks are perpetrated for the purposes of espionage the ability…

Cryptography and Security · Computer Science 2014-10-17 Chris Chapman , Scott Knight , Tom Dean

We present Shufflecake, a new plausible deniability design to hide the existence of encrypted data on a storage medium making it very difficult for an adversary to prove the existence of such data. Shufflecake can be considered a…

Cryptography and Security · Computer Science 2024-08-26 Elia Anzuoni , Tommaso Gagliardoni

In our current society, the inter-connectivity of devices provides easy access for netizens to utilize cyberspace technology for illegal activities. The deep web platform is a consummative ecosystem shielded by boundaries of trust,…

Cryptography and Security · Computer Science 2022-02-04 Victor Adewopo , Bilal Gonen , Nelly Elsayed , Murat Ozer , Zaghloul Saad Elsayed

As large language models (LLMs) become increasingly integrated into real-world applications such as code generation and chatbot assistance, extensive efforts have been made to align LLM behavior with human values, including safety.…

Cryptography and Security · Computer Science 2024-07-29 Zhangchen Xu , Fengqing Jiang , Luyao Niu , Jinyuan Jia , Bill Yuchen Lin , Radha Poovendran

The monitoring of individuals/objects has become increasingly possible in recent years due to the convenience of integrated cameras in many devices. Due to the important moments or activities of people captured by these devices, it has made…

Cryptography and Security · Computer Science 2022-10-27 Ifeoluwapo Aribilola , Mamoona Naveed Asghar , Brian Lee