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Advanced Encryption Standard (AES) algorithm is considered as a secured algorithm. Still, some security issues lie in the S-Box and the key used. In this paper, we have tried to give focus on the security of the key used. Here, the proposed…

Cryptography and Security · Computer Science 2013-07-12 Chittaranjan Pradhan , Ajay Kumar Bisoi

This work presents a novel technique for joint secured and robust transmission of orthogonal frequency division multiplexing (OFDM) based communication systems. The proposed system is implemented by developing a new OFDM symbol structure…

Information Theory · Computer Science 2016-11-15 Al-Dweik , M. Mirahmadi , A. Shami , Z. Ding , R. Hamila

Recently, two certificateless three-party authenticated key agreement protocols were proposed, and both protocols were claimed they can meet the desirable security properties including forward security, key compromise impersonation…

Cryptography and Security · Computer Science 2013-01-23 Haiyan Sun , Qiaoyan Wen , Hua Zhang , Zhengping Jin , Wenmin Li

Recently a new quantum key distribution protocol using coherent and thermal states was proposed. In this work this kind of two-layer QKD protocol is formalized and its security against the most common attacks, including external control and…

Quantum Physics · Physics 2014-12-22 Rubens Viana Ramos

Secure routing protocols are proposed for the vehicular ad hoc networks. The protocols integrate the security authentication process with the Location-Aided Routing (LAR) protocol to support Wi-Fi Direct communications between the vehicles.…

Cryptography and Security · Computer Science 2020-05-01 Ma'en Saleh , Liang Dong

Internet of Things (IoT) have gained popularity in recent times. With an increase in the number of IoT devices, security and privacy vulnerabilities are also increasing. For sensitive domains like healthcare and industrial sectors, such…

Cryptography and Security · Computer Science 2023-12-27 Sai Sreekar Vankayalapati , Srijanee Mookherji , Vanga Odelu

Ensuring secure and efficient data processing in mobile edge computing (MEC) systems is a critical challenge. While quantum key distribution (QKD) offers unconditionally secure key exchange and homomorphic encryption (HE) enables…

Social and Information Networks · Computer Science 2025-07-09 Liangxin Qian , Yang Li , Jun Zhao

The fabrication of quantum key distribution (QKD) systems typically involves several parties, thus providing Eve with multiple opportunities to meddle with the devices. As a consequence, conventional hardware and/or software hacking attacks…

The issue of detecting deepfakes has garnered significant attention in the research community, with the goal of identifying facial manipulations for abuse prevention. Although recent studies have focused on developing generalized models…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Jiazhi Guan , Tianshu Hu , Hang Zhou , Zhizhi Guo , Lirui Deng , Chengbin Quan , Errui Ding , Youjian Zhao

Key substitution vulnerable signature schemes are signature schemes that permit an intruder, given a public verification key and a signed message, to compute a pair of signature and verification keys such that the message appears to be…

Cryptography and Security · Computer Science 2007-10-31 Yannick Chevalier , Mounira Kourjieh

Quantum Key Distribution (QKD) leverages the principles of quantum mechanics to provide theoretically unconditional security for cryptographic key sharing. However, practical implementations remain vulnerable due to non-ideal devices and…

Quantum Physics · Physics 2025-08-22 Cong Jiang , Xiao-Long Hu , Zong-Wen Yu , Hai Xu , Xiang-Bin Wang

The use of blockchain and smart contracts have not stopped growing in recent years. Like all software that begins to expand its use, it is also beginning to be targeted by hackers who will try to exploit vulnerabilities in both the…

Cryptography and Security · Computer Science 2024-02-07 Antonio López Vivar , Ana Lucila Sandoval Orozco , Luis Javier García Villalba

Multi-Key Homomorphic Encryption (MKHE), proposed by Lopez-Alt et al. (STOC 2012), allows for performing arithmetic computations directly on ciphertexts encrypted under distinct keys. Subsequent works by Chen and Dai et al. (CCS 2019) and…

Cryptography and Security · Computer Science 2025-10-24 Jiahui Wu , Tiecheng Sun , Fucai Luo , Haiyan Wang , Weizhe Zhang

This thesis is concerned with rigorous security analyses of practical Quantum Key Distribution (QKD) protocols, using a variety of modern proof techniques. The main results are as follows. First, we establish a security proof for…

Quantum Physics · Physics 2026-04-24 Devashish Tupkary

A Post-Quantum Key Exchange is needed since the availability of quantum computers that allegedly allow breaking classical algorithms like Diffie-Hellman, El Gamal, RSA and others within a practical amount of time is broadly assumed in…

Cryptography and Security · Computer Science 2018-01-22 G. Brands , C. B. Roellgen , K. U. Vogel

In this paper we present a new primitive for a key exchange protocol based on multivariate non-commutative polynomial rings, analogous to the classic Diffie-Hellman method. Our technique extends the proposed scheme of Boucher et al. from…

Cryptography and Security · Computer Science 2015-05-20 Reinhold Burger , Albert Heinle

Following a sequence of hardware designs for a fully homomorphic crypto-processor - a general purpose processor that natively runs encrypted machine code on encrypted data in registers and memory, resulting in encrypted machine states -…

Cryptography and Security · Computer Science 2018-09-06 Peter Breuer , Jonathan Bowen

Recently, Yang and Tan proposed a certificateless key exchange protocol without pairing, and claimed their scheme satisfies forward secrecy, which means no adversary could derive an already-established session key unless the full user…

Cryptography and Security · Computer Science 2011-12-06 Min Zhang , Jie Zhang , Qiao-Yan Wen , Zheng-Ping Jin , Hua Zhang

Recently, a two-way RFID authentication protocol based on the AM-SUEO-DBLTKM variable matrix encryption algorithm was proposed for low-cost mobile RFID systems. Its design combines adaptive modulus selection, self-updating matrix ordering,…

Cryptography and Security · Computer Science 2026-03-31 Hongjun Wu

Protocol detection is the process of determining the application layer protocol in the context of network security monitoring, which requires a timely and precise decision to enable protocol-specific deep packet inspection. This task has…

Networking and Internet Architecture · Computer Science 2019-12-10 Jan Grashöfer , Christian Titze , Hannes Hartenstein