Authentication Guarantees Research Articles

A Deniability Analysis of Signal’s Initial Handshake PQXDH

Many use messaging apps such as Signal to exercise their right to private communication. To cope with the advent of quantum computing, Signal employs a new initial handshake protocol called PQXDH for post-quantum confidentiality, yet keeps guarantees of authenticity and deniability classical. Compared to its predecessor X3DH, PQXDH includes a KEM encapsulation and a signature on the ephemeral key. In this work we show that PQXDH does not meet the same deniability guarantees as X3DH due to the signature on the ephemeral key. Our analysis relies on plaintext awareness of the KEM, which Signal's implementation of PQXDH does not provide. As for X3DH, both parties (initiator and responder) obtain different deniability guarantees due to the asymmetry of the protocol. For our analysis of PQXDH, we introduce a new model for deniability of key exchange that allows a more fine-grained analysis. Our deniability model picks up on the ideas of prior work and facilitates new combinations of deniability notions, such as deniability against malicious adversaries in the big brother model, i.e. where the distinguisher knows all secret keys. Our model may be of independent interest.

GANs for Image Security Applications: A Literature Review

Generative Adversarial Networks (GANs) have earned significant attention in various domains due to their generative model’s compelling ability to generate realistic examples probably drawn from sample distribution. Image security indicates the process of protecting digital images from unauthorized access, modification, or distribution. This requires a guarantee of image privacy, integrity, and authenticity to prohibit them from being exploited by malicious attacks. GANs can also be utilized for improving image security by exploiting its generation ability in encryption, steganography, and privacy-preserving tech-niques. This paper reviews GANs-based image security techniques providing a systematic overview of current literature and comparing the role of GANs in image encryption, image steganography, and priva-cy preserving from multiple dimensions. Additionally, it outlines future research directions to further explore the potential of GANs in addressing privacy and image security concerns

Scalable Anonymous Authentication Scheme Based on Zero-Knowledge Set-Membership Proof

In this paper, we propose zero-knowledge named proof, a stateless replay attack prevention strategy that ensures the user’s anonymity against malicious administrators. We begin with adopting the zero-knowledge set-membership proof into an authentication setting in which users would delegate their requests to an agent that obstructs the user’s identity from the administrator. This anonymous agent carries the guarantee of authenticity, which the administrator through the set-membership proof can confirm. Next, we prevent replay attacks from other parties by binding the agent’s identity to the authentication proof verifiable by the administrators. By leveraging these properties, a scalable blockchain-based authentication scheme is then built. We quantitatively evaluate the security and measure the time and monetary cost of our scheme under both ideal and realistic environments. On top of it, we provide a third-party authorization scheme derived from our authentication framework to demonstrate its real-world applicability.

TRANSFORMASI E-GOVERNMENT DALAM PERSETUJUAN BANGUNAN GEDUNG:

The aim of this research is to determine the application of e-government in building approval services through SIMBG at the Kendari City Investment and One-Stop Integrated Services Service. Researchers used descriptive qualitative research methods. There were 9 informants in this study who were determined using purposive sampling techniques. Data collection techniques through in-depth interviews and documentation studies. Building Approval Services through SIMBG at the Kendari City One-Stop Integrated Services and Investment Service can be seen from: 1) Physical evidence of the availability of good and adequate public service locations. 2) The Reliability Dimension (reliability) of the Kendari City one-stop capital investment and service department is still not in accordance with applicable regulations and SOPs. 3) Responsiveness, which is still not good, can be seen from the lack of response by employees to complaints or complaints from the public in services related to the PBG permit application process through SIMBG. 4) The insurance dimension is good, as seen from the existence of several guarantees, namely data and document security guarantees, PBG document authenticity guarantees and service guarantees. 5) Empathy, this can be seen from the lack of professionalism of employees towards applicants regarding PBG services through SIMBG.

Empowering Farmers and Consumers Blockchain Innovations in Agricultural Supply Chains

In recent times, numerous instances have come to light concerning farmer suicides attributed to mounting debts and meager agricultural yields. This poses a significant predicament for countries like India, which are grappling with burgeoning populations and an escalating reliance on land for residential and industrial expansion. The diminishing availability of fertile land for farming necessitates heightened agricultural output to meet the nation's demands. Despite this increasing demand, farmers continue to grapple with formidable challenges. Concurrently, consumers are also grappling with concerns over escalating commodity prices and the quality of produce available in the market. They often find themselves compelled to purchase available goods at prices dictated by sellers. Unscrupulous practices such as black market activities, hoarding, and adulteration, perpetuated by intermediaries, serve to further inflate the costs of agricultural products. Although the desire for organic products is on the rise, the absence of a robust system to trace the various stages of organic cultivation and guarantee authenticity poses a significant hurdle. Perhaps the most glaring issue in the agricultural markets is the palpable disconnect that exists between farmers and consumers. We have introduced an innovative marketplace built upon blockchain technology, designed to foster collaborative farming practices between farmers and consumers. This platform allows farmers to showcase their potential crops and projected yields on a decentralized public ledger. Consumers, in turn, gain access to this information and can assess the credibility of farmers based on their past cultivation and supply records. This pioneering approach establishes a transparent and tamper-proof digital marketplace exclusively for agricultural products. Within this framework, a consensus is established through mutual agreement between farmers and consumers. This consensus enables consumers to financially support individual crops or entire fields, in exchange for a share of the farm's yield or a percentage of the market value profit. A rating system has been implemented to enhance the credibility of both farmers and consumers, drawing from their prior interactions and experiences within the agro-market domain.

Analysis The Effect of Service Quality Supply Chain Management Healthcare Product Towards Hospital and Clinical Laboratories Satisfaction

Supply chain management (SCM) is one of the critical things in healthcare sector because it has a direct effect on the quality of services provided. The aim of this study is to analyse the effect of service quality on supply chain management of healthcare products in hospital and clinical laboratories satisfaction. The study adapted six dimensions of service quality namely assurance, communication, empathy, reliability, responsiveness, and tangibles. Survey data was analysed using Structural Equation Modelling-Partial Least Square (SEM-PLS). A total of 67 hospitals and clinical laboratories were the research sample. The results show that service quality on supply chain management of healthcare product has a positive effect on hospital and clinical laboratories satisfaction. Reliability is the most prominent dimension that determines hospital and clinical laboratory satisfaction. Items that contribute to reliability include complaint handling, product authenticity guarantee, order processing, on time delivery, providing product information updated and routine visitation.

Accuracy and stability enhanced honey authenticity visual tracing method via false positive-eradicating PCR assisted nucleic acid-capturing lateral flow strip

Honey authenticity guarantee is crucial for consumer health and fair-trading commerce. New visual false-positive-free molecular lateral flow strip (LFS), termed 5′-3′ exonuclease activity -directed false positive-eradicating PCR assisted lateral flow strip (FPE-PCR-LFS) was developed. This FPE-PCR-LFS explored the availability of using a signal-probe as the mediator to integrate the efficient amplification module with visual LFS module. With the genomic DNA extracted from target honey, the designed signal probe would be hydrolyzed and exhausted by the 5′-3′ exonuclease activity of Taq DNA polymerase in the amplification process. The hydrolyzed signal probe would not be recognized and capture on the T line with only C line of LFS, reflecting the authenticity of the tested honey. And as low as 0.5% authenticity can be accurately identified in commercial honey samples. Significantly, the false-positive-interference was successfully eradicated for the final visual results judgement, which would greatly widen the application of molecular PCR-LFS in various fields.

An Innovative Strategy Based on Secure Element for Cyber–Physical Authentication in Safety-Critical Manufacturing Supply Chain

The accurate tracking of every production step and related outcome in a supply chain is a stringent requirement in safety-critical sectors such as civil aviation. In such a framework, trusted traceability and accountability can be reliably and securely managed by means of blockchain-based solutions. Unfortunately, blockchain cannot guarantee the provenance and accuracy of the stored information. To overcome such a limitation, this paper proposes a secure solution to strongly rely on the tracking information of the physical assets in the supply chain. The proposed solution exploits Hardware Security Modules (HSMs) to provide required cryptographic primitives through a Near-Field Communication (NFC) connection. In our approach, each transfer of the assets is authenticated, verified, and recorded in the blockchain through the HSM. Transaction entries are signed, thus providing a guarantee of ownership and authenticity. The proposed infrastructure has been subject of an exhaustive security analysis and proved resilient against counterfeiting attempts, stakeholder repudiations, and misleading information.

Transaction Agreements Through Internet Media Electronic Systems (E-Commerce) in the Perspective of Civil Law and Islamic Law

E-Commerce or what is known as electronic commerce is a product in the digital era. E-Commerce Agreements have become a new color in the economic world, especially in providing convenience in making an agreement in a transaction . Like an agreement in general, but the difference is that the contract is not in one assembly. It is urgent to get a factual answer related to its validity in the dimensions of civil law and Islamic law. nik. This study is normative research with literature study. The results of this study indicate that: (1) Even though there is one of the legal conditions of the agreement that is not fulfilled, namely the qualification requirements of the parties, the agreement made by the merchant and customer remains valid and binding and becomes a law for merchants and customers because the skill requirements are included in subjective conditions where a condition is not fulfilled in the agreement. does not cause the agreement or contract to be invalid, but the agreement or contract can be requested for cancellation. Meanwhile, according to the Islamic perspective, it is permissible as long as it does not contain elements that can damage it, such as tyranny, fraud, cheating, containing usury, forbidden cases and the like and fulfilling the pillars and conditions of buying and selling. (2) Then, problems in the implementation of E-Commerce can actually be overcome by using technology assistance, including cryptography and digital signatures that are useful for providing guarantees of data authenticity, data confidentiality, and data validity using SSL (Secure Socket Layer) on the browser engine to provide security against eavesdropping. data in the process of electronic transactions. Cooperation between merchants and banks and account and credit card issuers to ensure the accuracy of the data submitted, especially regarding skills. Good faith from the merchant by using software that has been tested to always update the information submitted in order to provide correct information about the existence of the goods.

Microwave-Assisted Extraction Coupled to HPLC-UV Combined with Chemometrics for the Determination of Bioactive Compounds in Pistachio Nuts and the Guarantee of Quality and Authenticity.

Two novel microwave-assisted extraction (MAE) methods were developed for the isolation of phenols and tocopherols from pistachio nuts. The extracts were analyzed by reversed-phase high-pressure liquid chromatography coupled with a UV detector (RP-HPLC-UV). In total, eighteen pistachio samples, originating from Greece and Turkey, were analyzed and thirteen phenolic compounds, as well as α-tocopherol, (β + γ)-tocopherol, and δ-tocopherol, were identified. The analytical methods were validated and presented good linearity (r2 > 0.990) and a high recovery rate over the range of 82.4 to 95.3% for phenols, and 93.1 to 96.4% for tocopherols. Repeatablility was calculated over the range 1.8–5.8%RSD for intra-day experiments, and reproducibility over the range 3.2–9.4%RSD for inter-day experiments, respectively. Principal component analysis (PCA) was employed to analyze the differences between the concentrations of the bioactive compounds with respect to geographical origin, while agglomerative hierarchical clustering (AHC) was used to cluster the samples based on their similarity and according to the geographical origin.

Enablers to Boost Blockchain Adoption in EU

This paper describes a framework to facilitate the adoption of the Blockchain technology and streamline the development of decentralised applications (DAPPs). It describes four enablers, as self-contained core modules, offering specific, key functionality using the Blockchain technology. The enabler functionality includes a) Blockchain-based ID management allowing for authentication and authorization, b) the storage of data in the IPFS distributed filesystem with guarantees of data integrity and authenticity, c) the trustworthy registration of entities, services, and bindings, d) the performance of trustworthy negotiations towards external marketplaces with the support of the Blockchain. The design and interactions of the enablers are described using sequence diagrams. The usage of the functionality provided by the enablers is also being evaluated. In parallel, we present the application of the Blockchain technology, mainly in the context of EU project Block.IS in three economic areas agriculture, finance, and logistics. We provide and discuss a digest of the decentralised applications designed and developed over a period of approximately 3 years (2019-2021). Key areas of interest, processes, workflows, and assets where Blockchain technology has been applied are described. Findings, in terms of Blockchain application, challenges and technical selections as well as third-party tools are also identified and discussed.

Assessing food authenticity through protein and metabolic markers.

This chapter aims to address an issue of ancient origins, but more and more topical in a globalized world in which consumers and stakeholders are increasingly aware: the authenticity of food. Foods are systems that can also be very complex, and verifying the correspondence between what is declared and the actual characteristics of the product is often a challenging issue. The complexity of the question we want to answer (is the food authentic?) means that the answer is equally articulated and makes use of many different analytical techniques. This chapter will consider the chemical analyses of foods aimed at guaranteeing their authenticity and will focus on frontier methods that have been developed in recent years to address the need to respond to ever-increasing guarantees of authenticity. Targeted and non-targeted approaches will be considered for verifying the authenticity of foods, through the study of different classes of constituents (proteins, metabolites, lipids, flavors). The numerous approaches available (proteomics, metabolomics, lipidomics) and the related analytical techniques (LC-MS, GC-MS, NMR) are first described from a more general point of view, after which their specific application for the purposes of authentication of food is addressed.

A Verifiably Secure ECC Based Authentication Scheme for Securing IoD Using FANET

Perfect forward secrecy, cross-verification, and robust mutual authentication guarantee secure communication through unfavorable and unsafe channels. The speedy development in wireless communication and drone-assisted networking technology has miserable significance in many areas, including wildlife monitoring, sidewalk checking, infrastructure inspection, and smart city surveillance. But guaranteeing message integrity, non-repudiation, authenticity, and authorization for information transmission for these areas are still challenging for researchers when using Flying Ad Hoc Networks (FANETs). The FANET’s existence for drone technology is more complicated due to dynamic changes in its topology and easily vulnerable to the adversary for numerous attacks. So far, before exhilarating a drone in the Internet-of-Drones (IoD) environment, controlled layered network architecture is indispensable to allow only legitimate drones to collaborate securely with each other and with the ground control station (GCS) for building the highest trust. A minor lapse creates a severe complication for communication security because an attacker might be trapping data from the open network channel and using it for their unusual deeds. Attentively, identification authentication and message authentication are necessary for such a sensitive environment. Therefore, in this research article, we have designed a verifiably secure Elliptic Curve Cryptographic (ECC)-based authentication scheme for IoD using FANET. The formal security proof of the scheme has been made using a programming verification toolkit ProVerif2.03, Random Oracle Model (ROM), and informally by pragmatic illustration. And the performance evaluation section of the article has been made by considering storage, computation, and communication costs. When comparing the proposed security mechanism with state-of-the-art schemes, it has been shown that the work done in this article is efficient and effective and is suitable for practically implementing in the IoD environment.

La Force du désir de Krysinska comme roman à clef

Krysinska’s La Force du Désir as a roman à clef In Krysinska’s novel, La Force du Désir, which I consider a roman à clef, rich referentiality is a guarantee of authenticity. Spatial and cultural references build a world familiar to the reader who can easily decipher the prototypes of the presented characters. Moreover, Krysinska’s novel contains the philosophy of the mask, both explicitly and implicitly, within the characters’ behavior. This, however, does not exhaust the issue of the mask, because a roman à clef, on the generic level, is a mask of an esoteric novel.

LA TRADITION – VECTEUR IMPORTANT DE PROMOTION ET GAGE DE QUALITÉ. LE CAS DES PRODUITS ROUMAINS DU TERROIR (TRADITION – IMPORTANT PROMOTION AND QUALITY GUARANTEE VECTOR. THE CASE OF TRADITIONAL ROMANIAN PRODUCTS)

This paper illustrates some of the ways in which producers and traders of traditional Romanian products in the agri-food sector manage to promote their products on the international market using digital media. They used to be present at international trade fairs and exhibitions or in the traditional media. In recent years and especially during the Covid pandemic19, promotion has moved online, on enterprise websites, on social networks and on eCommerce platforms. Using the concepts of discourse analysis, we will show that the discourse promoting regional specialties contains references to tradition – as a guarantee of authenticity, originality, and value of the product, to health – being genuine products made with natural ingredients, in small factories or even in peasant households, with respect for quality and manufacturing stages – the most well-known Romanian products already having the status of a brand with a protected geographical indication. It is a discourse about exceptional products. Based on recipes that are about 200 years old, perfecting the manufacturing processes and raising the tradition to the rank of art, the producers manage to offer specialties that give any meal refinement, and even luxury. Foreign tourists taste these products for the first time during the holidays spent in the agrotourism pensions in Romania, and then they look for them in the Romanian stores in their countries or on the eCommerce sites.

Proteomic Advances in Milk and Dairy Products.

Proteomics is a new area of study that in recent decades has provided great advances in the field of medicine. However, its enormous potential for the study of proteomes makes it also applicable to other areas of science. Milk is a highly heterogeneous and complex fluid, where there are numerous genetic variants and isoforms with post-translational modifications (PTMs). Due to the vast number of proteins and peptides existing in its matrix, proteomics is presented as a powerful tool for the characterization of milk samples and their products. The technology developed to date for the separation and characterization of the milk proteome, such as two-dimensional gel electrophoresis (2DE) technology and especially mass spectrometry (MS) have allowed an exhaustive characterization of the proteins and peptides present in milk and dairy products with enormous applications in the industry for the control of fundamental parameters, such as microbiological safety, the guarantee of authenticity, or the control of the transformations carried out, aimed to increase the quality of the final product.

Deep-Learning-Aided RF Fingerprinting for NFC Security

Given the ever increasing use of near field communication (NFC), the security of this system is becoming increasingly important. Recently, radio frequency (RF) fingerprinting, where the physical RF characteristics of a communication device are used as a means to provide guarantees of authenticity and security, has received serious consideration due to the uniqueness of these characteristics, making cloning difficult. In this article, we discuss the feasibility of RF fingerprinting assisted by deep learning for use in identifying NFC tags. To this end, we implement a hardware testbed with an off-the-shelf NFC reader and software defined radio. An RF signal corresponding to one-bit transmission from the NFC tag is used to extract the RF characteristics, which enables rapid identification. Three different types of deep neural network are used, namely fully connected layer-based neural network” convolutional neural network, and recurrent neural network. By exper-iment, we confirm that deep-learning-based algorithms can uniquely distinguish 50 NFC tags with up to 96.16 percent accuracy. We also discuss some of the key technical challenges involved in the use of deep-learning-based RF fingerprinting for NFC.

Performances Combination Schemes AES-Turbo Code Based-on Keys Length

In data communication the process of sending data in the form of information is susceptible to theft, destruction, modification or repetition of the data sent which causes information to be changed / corrupted according to the original data. One way to guarantee authenticity can be done by utilizing security techniques in the process of sending data, one of which is by using a combination of cryptographic and error correction techniques, namely AES and Turbo Code. This study aims to combine the two techniques and apply them to text data by evaluating based on the length of AES encryption keys. Performance results indicate that AES-Turbo cryptographic combination algorithms can work optimally at SNR greater than or equal to 15 dB, for the best test value for avalanche effects is 24.77 % at 256-bit key lengths and the testing data execution time with an average time of 9.19 seconds, the time required for decryption is longer than the time needed for encryption, and the longer the key the longer it takes for encryption and decryption. For selection of keys length of AES more efficiency and effectiveness that is by using 128-bit key.

Blockchain technology using consensus mechanism for IoT-based e-healthcare system

In healthcare systems IoT device has to give sensitive and private information about the patients, it should be maintained extremely confidential and personal. Most of the IoT-healthcare devices based on existing centralized server data management technology don’t give any guarantee of authenticity and security. Blockchain is a public tamperproof ledger that is decentralized network system in which transaction of data is distributed among the nodes. Blockchain with its consensus algorithm can solve problems by providing decentralized computation for IoT data. The combination of IoT and blockchain technologies with consensus algorithm can become a best choice of designing the secured distributed e-healthcare systems. This paper reviews the blockchain technology and the basic principle and characteristics of a consensus algorithm for IoT- based e- healthcare system.

Exploring the Case: Utah Farm-Chef-Fork: Linking Rural Growers with Urban Chefs

Introduction A principal aim of the locavore movement is to reduce food-miles while giving consumers access to food that is of the region. Locally grown and locally raised food is of interest to tourists as it is a guarantee of authenticity, reflecting the landscapes and traditions of a place – in particular if it locally prepared at a food stand, in a restaurant or at a bed-and-breakfast.