Signs Of Secretion Research Articles

Studying the Antioxidant and Antimicrobial Activity of Lipsticks Made with Phycoerythrin Under the Influence of Different Magnetic Fields

Background: Several studies have shown the benefits of magnetic treatment on the productivity of secondary metabolites, growth, and the state of microalgae cultures Objective: This study examined the antioxidant and antimicrobial activity of lipsticks made with phycoerythrin (PE) extracted from the cyanobacterium Nostoc sp. under the influence of different magnetic fields (30 mT and 60 mT). Material and Methods: After cyanobacterial culture under magnetic fields of 30 mT and 60 mT, the PE was extracted and lipsticks were formulated. The primary evaluation methods used in this study are melting point, breaking point, linoleic acid peroxidation assay, force of application, stability, surface abnormalities, skin irritation, thixotropy character, dispersibility test, perfume stability, colorimetric assay, antioxidant, and microbial analysis Results: The 30 mT treatment showed the highest concentration, purity, dry weight, antioxidant activity, and percentage of PE extraction compared to control cultures. No significant differences were found in the melting point, stability, thixotropy character, dispersibility, or perfume stability tests. The breaking point and force of application decreased significantly during 30 days. Peroxidation assay tests revealed lipstick increased oxidation and antioxidant activity after 30 days of 30 and 60 mT treatments compared to non-PE cultures. The study found that the amount of ΔE increased significantly in cultures without PE over time, while this increase was lower in magnetic field-treated cultures. However, no signs of crystal formation, surface wrinkles, liquid secretion, itching, or skin irritation were observed in 30 days of 30 and 60 mT magnetic treatments compared to control cultures with PE. Microbial analyzes over 30 days showed a significantly lower number of bacteria under magnetic fields than control cultures. In addition, the results of counting Escherichia coli and coliform bacteria were negative for thirty days. The antioxidant activity of PE was significantly higher in magnetic field-treated cultures. The number of Staphylococcus aureus decreased significantly in all cultures under magnetic field influence. Conclusions: The overall results of this study showed that magnetic fields had a significant effect in many evaluation tests on the culture of cyanobacteria Nostoc sp. As a result, lipsticks made with extracted PE have more antioxidant and antimicrobial activity

β-Hydroxybutyrate Improves the Redox Status, Cytokine Production and Phagocytic Potency of Glucose-Deprived HMC3 Human Microglia-like Cells.

Brain glucose deprivation is a component of the pathophysiology of ischemia, glucose transporter1 (GLUT1) deficiency, neurological disorders and occurs transiently in diabetes. Microglia, the neuroimmune cells must function effectively to offer immune defence and debris removal in low-energy settings. Brain glucose deprivation may compromise microglial functions further escalating the disease pathology and deteriorating the overall mental health. In the current study, HMC3 human microglia-like cells were culturedin vitro and exposed to glucose deprivation to investigate the effects of glucose deprivation on phenotypic state, redox status, secretion of cytokines and phagocytic capabilities of HMC3 cells. However, HMC3 cells were able to proliferate in the absence of glucose but showed signs of redox imbalance and mitochondrial dysfunction, as demonstrated by decreased MTT reduction and Mito Tracker™ staining of cells, along with a concomitant reduction in NOX2 protein, superoxide, and nitrite levels. Reduced levels of secreted TNF and IL-1β were the signs of compromised cytokine secretion by glucose-deprived HMC3 microglia-like cells. Moreover, glucose-deprived HMC3 cells also showed reduced phagocytic activity as assessed by fluorescently labelled latex beads-based functional phagocytosis assay. β-hydroxybutyrate (BHB) supplementation restored the redox status, mitochondrial health, cytokine secretion, and phagocytic activity of glucose-deprived HMC3 microglia-like cells. Overall, impaired brain glucose metabolism may hinder microglia's capacity to release diffusible immune factors and perform phagocytosis. This could escalate the mental health issues in neurological diseases where brain glucose metabolism is compromised. Moreover, nutritional ketosis or exogenous ketone supplementation such as BHB may be utilized as a potential metabolic therapies for these conditions.

Innovative Digital Signature Paradigm and its Blockchain Applications

Abstract: This paper introduces an innovative digital signature method called the "expander signature" and explores its Blockchain technology applications. The key advantage of this approach is that a signer can create and manage multiple signatures using a powerful computer, storing expander keys securely. When needed, the signer can release specific expander keys for signature verification, even on resource-limited devices. The paper formally defines the syntax and the security of expander signatures, providing generic constructions from different signature schemes. Importantly, security of expander signatures relies on underlying public key signature schemes, ensuring the signer's secret key remains confidential. This innovation is showcased through an application in blockchain technology.

Chronic pharmacologic manipulation of dopamine transmission ameliorates metabolic disturbance in Trappc9-linked brain developmental syndrome.

Loss-of-function mutations of the gene encoding the trafficking protein particle complex subunit 9 (Trappc9) cause autosomal recessive intellectual disability and obesity by unknown mechanisms. Genome-wide analysis links Trappc9 to nonalcoholic fatty liver disease (NAFLD). Trappc9-deficient mice have been shown to appear overweight shortly after weaning. Here, we analyzed serum biochemistry and histology of adipose and liver tissues to determine the incidence of obesity and NAFLD in Trappc9-deficient mice and combined transcriptomic and proteomic analyses, pharmacological studies, and biochemical and histological examinations of postmortem mouse brains to unveil mechanisms involved. We found that Trappc9-deficient mice presented with systemic glucose homeostatic disturbance, obesity, and NAFLD, which were relieved upon chronic treatment combining dopamine receptor D2 (DRD2) agonist quinpirole and DRD1 antagonist SCH23390. Blood glucose homeostasis in Trappc9-deficient mice was restored upon administering quinpirole alone. RNA-sequencing analysis of DRD2-containing neurons and proteomic study of brain synaptosomes revealed signs of impaired neurotransmitter secretion in Trappc9-deficient mice. Biochemical and histological studies of mouse brains showed that Trappc9-deficient mice synthesized dopamine normally, but their dopamine-secreting neurons had a lower abundance of structures for releasing dopamine in the striatum. Our study suggests that Trappc9 loss of function causes obesity and NAFLD by constraining dopamine synapse formation.

QAnon: A False Prophets Conspiracy

Examining the QAnon movement through a Jungian lens, this analysis draws parallels between archetypal defense mechanisms and the Homeric myth of Odysseus, specifically his stay on Ogygia Island. The paper introduces terms like "Dark Religion" and "theocalypse," exploring the phenomenon of mind possession in religious fundamentalism and conspiracy theories. Symbolically, Calypso, as "the concealer," functions as an archetypal protective system, diverting ego-consciousness from reality and constructing a false belief system. "Theocalypse" describes religious inflation by unconscious contents, resulting in specific mytho-poetic ideologies and archetypal images whose function is to protect ego from experiencing painful emotions.
 The manifestation of Dark Religion is evident in QAnon Conspiracy Theory followers who believe in a secret war led by Donald Trump against a satanic child-trafficking cabal. This dark belief system is characterized by traits such as seeking secret signs and clues, absolutism, rejection of modernity, reactivity, aggression, a paranoid worldview, and the assertion of a special ability to see with their hearts—reading between the lines, to name a few.
 Commonalities between conspiratorial and fundamentalist thinking emerge from the dynamics of inferior consciousness and subsequent ego inflation, explaining both the archetypal nature of conspiracism and its resistance to rational correction. Conspiratorialists assert additional qualities, such as being chosen to perceive the truth, promoting a superior truth without relative values or "gray" areas (superiority). Their knowledge is held unwaveringly and treated as infallible faith, often invoking sources like idols and refusing to question their authority. Vehement rejection of opposing theories (defensive selectivity) characterizes their mindset, along with a surrender of will to their leaders (submission to authority). Conspiracists actively pursue the goal of converting others (reactivity) and accept responsibility for the state of affairs only in a fantasy world, avoiding self-reflection (projection).
 Conscious thinking remains free from unconscious influence only when recognizing numinous contents and withdrawing projections from objects. A symbolic perspective, treating conspiracy theories as symbols rather than rational constructs, provides a non-dismissive understanding of strong adherence to such beliefs. Examining QAnon symbolically through the lens of Jungian psychology, while understanding how adherents enact unconscious complexes and cultural complexes, offers more effective ways of understanding their beliefs than what traditional schools provide.
 Breaking away from restrictive beliefs requires embracing living symbols tethered to reality, facilitating genuine feeling-insight, authentic suffering, and thereby fostering a connection with one's psyche.

New Attacks on LowMC Using Partial Sets in the Single-Data Setting

The LowMC family of block ciphers was proposed by Albrecht et al. in Eurocrypt 2015, specifically targeting adoption in FHE and MPC applications due to its low multiplicative complexity. The construction operates a 3-bit quadratic S-box as the sole non-linear transformation in the algorithm. In contrast, both the linear layer and round key generation are achieved through multiplications of full rank matrices over GF(2). The cipher is instantiable using a diverse set of default configurations, some of which have partial non-linear layers i.e., in which the S-boxes are not applied over the entire internal state of the cipher. The significance of cryptanalysing LowMC was elevated by its inclusion into the NIST PQC digital signature scheme PICNIC in which a successful key recovery using a single plaintext/ciphertext pair is akin to retrieving the secret signing key. The current state-of-the-art attack in this setting is due to Dinur at Eurocrypt 2021, in which a novel way of enumerating roots of a Boolean system of equation is morphed into a key-recovery procedure that undercuts an ordinary exhaustive search in terms of time complexity for the variants of the cipher up to five rounds. In this work, we demonstrate that this technique can efficiently be enriched with a specific linearization strategy that reduces the algebraic degree of the non-linear layer as put forward by Banik et al. at IACR ToSC 2020(4). This amalgamation yields new attacks on certain instances of LowMC up to seven rounds.

Shedding of a Thick Layer of Glycocalyx in Cystacanth of the Acanthocephalan <i>Acanthocephalus tenuirostris</i> (Achmerov et Dombrowskaja – Achmerova, 1941)

An electron microscopic study of the teguments of the late acanthella and the cystacanth acanthocephalan Acanthocephalus tenuirostris obtained in the experiment was carried out. The late acanthella is characterized by a bilayer cyst and signs of intense secretion in the surface part of the tegument. A cystacanth is characterized by a cyst and a thick layer of glycocalyx on the surface of the tegument, which are closely adjacent to each other along their entire length. During the preparation of some cystacanths, the cyst received mechanical damage; in these cystacanths, shedding of a thick layer of glycocalyx and associated cyst was observed.

Acute Aflatoxicosis in <i>Catla Catla</i>: An Experimental Study

Aflatoxicosis due to acute toxicity was studied through two experimental trials conducted on Indian major carp, Catla catla using crude as well as pure aflatoxin B. In the first experiment where fishes were fed crude toxin mixed with diet @ 5 mg/kg, no clinical sign as mortality could be observed, whereas in the second experiment where pure aflatoxin B was fed with the diet @ 0.5 mg/kg resulted in 40% mortality with signs of lethargy, listlessness and excess mucus secretion. Histopathological alterations in the liver, kidney, spleen, heart and gastrointestinal tract have been described and discussed.

©2023 by the Authors. This Article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/

Many secret signs and symbols area associated with the Yoruba as we have it amongst many tribes in Nigeria. Some of these signs and symbols have deep meanings and have connotations amongst the tribe. They form the everyday language of the people and a thorough understanding of them is key in their relationship with one another as a people. The objective of this study is to express the cultural connotations of selected symbols in relation to the Yoruba people of Nigeria. The study hinges on the theories of Mimesis, Structural Formalism and Semiotics. This was validated through ethnographic study of symbols such as art, architecture, clothing, body marks and decorations among others to discover deep and hidden information about cultural beliefs and assumptions among the people under study. Pertinent literatures were reviewed, interviews were conducted, information was sourced from the internet and personal experience was explored. The study points out to the fact that a lot of deep and secret meanings are attached to the selected signs and symbols. The paper concludes that meanings expressed are generally accepted by a host of the Yoruba people; however, there could be slight differences in belief system from one locality to another. The paper had contributed to the pool of knowledge by bringing unknown and hidden meanings of selected signs and symbols of the Yoruba people to limelight. The paper recommends that signs and symbols commonly used in communication among the Yoruba people of Nigeria should incorporated into the curricula of schools; especially Yoruba as a subject and taught to preserve the tradition from extinction. It is also recommended that folklores, mythology and oral tradition be encouraged among younger generation so as to preserve cultural values.

A survey of quantum secure group signature schemes: Lattice-based approach

The group signatures allow any member to sign the message on behalf of the group. While anyone who does not need to be a group member can verify the signature, they do not know who the signer is. The first examples are constructed using classical techniques such as the discrete logarithm and the integer factorization problem. The fact that the cryptosystems using classical techniques will be broken in polynomial time with quantum computing power increases the interest in post-quantum cryptography. Lattice-based cryptography is a good alternative for the post-quantum world due to its simple structures, efficient implementations, and worst-case hardness. Therefore, the lattice-based group signature schemes have been proposed for quantum era. In this paper, our aim is to review group signature schemes over lattices. We classify the schemes into four groups according to the fact that they allow adding and revoking members: static, group signature schemes with revocation mechanism, partially dynamic and fully dynamic. Firstly, we define the algorithms needed to construct the schemes. We give the development process and requirements for constructing group signatures before we review all group signature schemes over lattices. In addition, we compare all proposed lattice-based group signature schemes in view of underlying lattice problems, security requirements, the sizes of group public and secret signing key, signature size and security model. The main contribution of this study is that it is the first study examining lattice-based group signature schemes in detail.

FALCON signature vulnerability to special attacks and its protection

It is well known that quantum algorithms offer exponential speedup in solving the integer factorization and discrete logarithm problems that existing public-key systems rely on. Thus, post-quantum cryptography seeks alternative classical algorithms that can withstand quantum cryptanalysis. Growing concern about the quantum threat has prompted the National Institute of Standards and Technology (NIST) to invite and evaluate applications for a post-quantum cryptography standard, an ongoing process scheduled to be completed by 2023.
 Falcon is an electronic signature algorithm based on the mathematics of algebraic lattices. The disadvantage of this algorithm is the small number of studies of resistance against special attacks, as well as attacks through side channels.
 This material examines existing attacks on the implementation, and also analyzes the speed with applying countermeasures that would prevent such attacks. Although the Falcon scheme sampler, as well as certain mathematical transformations, are still vulnerable to attacks (which in turn allow the private key to be obtained), the efficiency of the components and mathematics of this signature algorithm make it competitive with other schemes, even with countermeasures against these attacks.
 The work will also consider the attack by side channels on the Falcon. Such an attack is a known-plaintext attack that uses the device's electromagnetic radiation to derive secret signature keys, which can then be used to forge signatures in arbitrary messages. The obtained results show that Falcon is quite vulnerable to side-channel attacks and does not yet have protection against such attacks in the proposed implementation. Because of this, standardization or implementation should consider the possibility of physical attacks, as well as options for countering such attacks.

Improved chaos‐RSA‐based hybrid cryptosystem for image encryption and authentication

SummaryThis article puts forward a fast chaos‐RSA‐based hybrid cryptosystem to secure and authenticate secret images. The SHA‐512 is used to generate a 512‐bit initial key. The RSA system is used to encrypt the initial secret key and signature generation for both the sender and image authentication. In fact, a powerful block‐cipher algorithm is developed to encrypt and decrypt images with a high level of security. At this stage, a strong PRNG based on four chaotic systems is propounded to generate high‐quality keys. Therefore, an improved architecture is suggested. It performs confusion and diffusion of images with low computational complexity. In the final step, the encrypted secret key, signature, and encrypted image are combined together in order to obtain an encrypted signed image. The block‐cipher algorithm is evaluated in‐depth for several ordinary and medical images with different types, content, and size. The obtained simulation results demonstrate that the system enables high‐level security. The entropy has achieved a value of 7.9998 which is the most important feature of randomness. A comparative study against numerous recent encryption algorithms demonstrates that the proposed algorithm provides good results.

An incidental finding behind adrenal incidentaloma.

SummaryA 61-year-old man went to the Emergency Department with left upper abdominal quadrant pain and low-grade fever, as well as a loss of weight (3 kg in 6 weeks). A solid-cystic lesion in the left adrenal lodge was discovered by abdominal ultrasonography. A slight increase in the serum amylase with normal lipase was observed, but there were no signs or symptoms of pancreatitis. A contrast-enhanced CT revealed a tumor that was suspected of adrenocortical cancer. Therefore, he was referred to the endocrine unit. The hormonal evaluation revealed no signs of excessive or inadequate adrenal secretion. To characterize the mass, an MRI was performed; the lesion showed an inhomogeneous fluid collection with peripheral wall contrast-enhancement, as well as a minor 18-fluorodeoxyglucose uptake at PET/CT images. The risk of primary adrenal cancer was minimal after the multidisciplinary discussion. An acute necrotic collection after focal pancreatitis was suspected, according to the characteristics of imaging. Both CT-guided drainage of the necrotic accumulation and laboratory analysis of the aspirated fluid confirmed the diagnosis.Learning pointsDifferent types of expansive processes can mimic adrenal incidentalomas.Necrotic collection after acute focal pancreatitis could be misdiagnosed as an adrenal mass, since its CT characteristics could be equivocal.MRI has stronger capacities than CT in differentiating complex lesions of the adrenal lodge.A multidisciplinary approach is fundamental in the management of patients with a newly discovered adrenal incidentaloma and equivocal/suspicious imaging features (low lipid content and size >4 cm).

Complicações na técnica de regeneração óssea guiada associada à membrana de PTFE-d: relato de caso

ABSTRACT Guided bone regeneration aims to gain vertical and horizontal bone volume in atrophic ridges, using different regenerative techniques associated with biomaterials, with occasional post-surgical complications. The objective of the case report was to describe the successive approaches to minimize and eliminate the complications presented in the postoperative period of a patient submitted to the guided bone regeneration technique. In the first surgery, the dense expanded polytetrafluoroethylene membrane (d-PTFE), supported by the tent technique and autogenous platelet graft, was used to perform the guided bone regeneration technique. After three months, the membrane was exposed, with the membrane and the retaining screws removed in the seventh month, with the installation of three Internal Hexagon implants in the areas of teeth 13, 14 and 15. The exposed threads were covered with hydroxyapatites resorbable and covered with d-PTFE membrane. A four-month postoperative panoramic radiograph suggested implant osseointegration. The guided bone regeneration technique associated with the d-PTFE membrane enabled bone neoformation, enabling the installation of osseointegrated implants in an aesthetic and functional position. The exposure of the edges of the membrane allowed the penetration of fluids and contamination, suggesting the worsening of the signs of infection and purulent secretion. On the contrary, the exposure of central areas did not cause inflammatory and infectious signs.

MAGICAL REALITY IN A. NURI NOVEL “PASSENGER OF HIS DESTINY”

The subject of analysis in the article is a different, magical reality in the novel by the modern Tatar Russian-speaking writer A. Nuri “Passenger of his destiny”, the ways of its creation and functioning at different levels of the artistic organization of the text. The complexity of external and internal boundaries is shown both in the space of the physical objective world, depicted in the novel, and in the consciousness of the protagonist, who is trying to understand the world and the nature of magical reality. If the world of physical reality is meaningful and logically cognizable, then dreams, hallucinations, secret signs become the methods of cognizing another reality. The author examines the influence of the works of Gabriel García Márquez, Miguel Angel Asturias, Salman Rushdie both at the level of macropoetics (the space-belt component of the novel) and at the level of micropoetics (images, episodes, motifs) on the artistic world of the novel. The article shows connections with oriental narrative discourse and fairy-tale imagery. Conclusions are drawn about the connection between the aesthetics of the novel and the aesthetics of magical realism.

Reactivity of human labial glands in response to cevimeline treatment.

Among the pathologies affecting the salivary glands, the Sjögren's syndrome (SS), an autoimmune disease, causes progressive destruction of the glandular tissue. The effect of SS is particularly evident on the labial glands and the morphological analysis of these minor glands is considered useful for diagnosis. Cevimeline hydrochloride (SNI), a selective muscarinic agonist drug, is one of the elective treatments for the hyposalivation due to SS, acting not only on major salivary glands, but also on labial glands since their secretion is primarily under parasympathetic control. Aim of this study is to describe the morphology of human labial glands treated with SNI by light, transmission, and high-resolution scanning electron microscopy. Moreover, a morphometric analysis was applied to the light and transmission electron microscopy micrographs to obtain data that were then compared with analogous data collected on control and carbachol-treated labial glands. Following SNI administration, the mucous tubules exhibited enlarged lumina, which were filled with a dense mucous secretion. Occasionally, small broken debris of the cells were retrieved into the lumen. In the mucous secretory cells, some mucous droplets fused to form a large vacuole-like structure. Similarly, the seromucous acini showed both dilated lumina and canaliculi. These above reported signs of secretion were confirmed through morphometric analysis and a milder action of SNI than carbachol on labial parenchyma was observed. This study confirmed that SNI also evoked secretion on labial glands and that its effect is more physiologic than that of the pan-muscarinic agonists.

RASSLE: Return Address Stack based Side-channel LEakage

Microarchitectural attacks on computing systems often stem from simple artefacts in the underlying architecture. In this paper, we focus on the Return Address Stack (RAS), a small hardware stack present in modern processors to reduce the branch miss penalty by storing the return addresses of each function call. The RAS is useful to handle specifically the branch predictions for the RET instructions which are not accurately predicted by the typical branch prediction units. In particular, we envisage a spy process who crafts an overflow condition in the RAS by filling it with arbitrary return addresses, and wrestles with a concurrent process to establish a timing side channel between them. We call this attack principle, RASSLE 1 (Return Address Stack based Side-channel Leakage), which an adversary can launch on modern processors by first reverse engineering the RAS using a generic methodology exploiting the established timing channel. Subsequently, we show three concrete attack scenarios: i) How a spy can establish a covert channel with another co-residing process? ii) How RASSLE can be utilized to determine the secret key of the P-384 curves in OpenSSL (v1.1.1 library)? iii) How an Elliptic Curve Digital Signature Algorithm (ECDSA) secret key on P-256 curve of OpenSSL can be revealed using Lattice Attack on partially leaked nonces with the aid of RASSLE? In this attack, we show that the OpenSSL implementation of scalar multiplication on this curve has varying number of add-and-sub function calls, which depends on the secret scalar bits. We demonstrate through several experiments that the number of add-and-sub function calls can be used to template the secret bit, which can be picked up by the spy using the principles of RASSLE. Finally, we demonstrate a full end-to-end attack on OpenSSL ECDSA using curve parameters of curve P-256. In this part of our experiments with RASSLE, we abuse the deadline scheduler policy to attain perfect synchronization between the spy and victim, without any aid of induced synchronization from the victim code. This synchronization and timing leakage through RASSLE is sufficient to retrieve the Most Significant Bits (MSB) of the ephemeral nonces used while signature generation, from which we subsequently retrieve the secret signing key of the sender applying the Hidden Number Problem.
 1RASSLE is a non-standard spelling for wrestle.

Forward-Secure Multi-User Aggregate Signatures Based on zk-SNARKs

As a solution to mitigate the key exposure problems in the digital signature, the forward security has been proposed. The forward security guarantees the integrity of the messages generated in the past despite leaks of a current time period secret key by evolving a secret key on each time period. In this paper, we propose a new forward secure aggregate signature scheme utilizing recursive zk-SNARKs (zero knowledge Succinct Non-interactive ARguments of Knowledge). Our proposal has constant complexities in key/signature sizes, signature generation, and verification time. The proposed forward secure signature scheme can aggregate signatures generated by multiple users as well as a single user. The security of the proposed scheme is formally proven under zero-knowledge assumption and random oracle model. The experiment results show that our signature scheme yields 12 s for signing time, 1 ms for verification time, 25 s for aggregation time, with the 1.6 KB secret key size and signature size independent of the number of time periods.

Almost Fully Secured Lattice-Based Group Signatures with Verifier-Local Revocation

An efficient member revocation mechanism is a desirable feature when group signature schemes are applied in practical scenarios. Revocation methods, such as verifier-local revocation (VLR), provide an efficient member revocation in applications of group signatures. However, VLR-group signatures rely on a weaker security notion. On the other hand, group signature schemes for static groups gain stronger security with the full-anonymity security notion. Even though an outsider sees the secret signing keys of all group members in the full-anonymity, the signer is still anonymous. Achieving the full-anonymity for VLR group signature schemes is challenging due to the structure of secret signing keys. The secret signing keys of those schemes consist of tokens, which are used to manage revocation. The reveal of tokens may destroy the anonymity of the signers. We obtain stronger security for the lattice-based VLR group signature schemes by providing a new key generation method, which outputs revocation tokens without deriving from the members’ secret signing keys. We propose a new group signature scheme from lattices with VLR, which achieves stronger security than the previous related works. To avoid signature forgeries, we suggest a new zero-knowledge proof system that requires signers to validate themselves. Moreover, we output an efficient tracing mechanism.

Encoding and decoding secret signs in the stories of Rabbi Joseph Hayyim of Baghdad

This article discusses two stories by R. Joseph Hayyim of Baghdad (1835–1909) recast from tales that were integrated in an oral sermon into written form. The written stories are embedded with clues pointing to the fact that the protagonist is, in fact, the author: R. Joseph Hayyim. It is my assertion that the transformation from oral storytelling to the written version creates a new dialogue with a broader audience that the author sought to reach. Moreover, the transition created a new poetic strategy, which is part of the artistic mimesis that reflects real-life existence. The discourse created by this possibility began with R. Joseph Hayyim’s pupils, and continues to this day among his readers.