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About 10,000 papers for “round function”

Experimental studies on round window structure: Function and permeability

Marcos V. Goycoolea, David C. Muchow, Patricia A. Schachern · The Laryngoscope · 1988

Current research and an overall review of 12 years of round window membrane studies is presented. The approach, rationale, and concepts that have evolved from the studies are described. An ultrastructural study of the round window membrane of rhesus monkeys disclosed three basic layers: an outer epithelium, a middle core of connective tissue, and an inner epithelium. Morphologic evidence in monkeys, cats, and chinchillas suggests that these layers of the round window participate in absorption and secretion of substances to and from the inner ear, and that the entire membrane could play a role in the defense system of the ear. Cationic ferritin, horseradish peroxidase, 1-micron latex spheres, and neomycin-gold spheres placed in the middle ear of these experimental animals were observed to traverse the round window membrane through pinocytotic vesicles. Three-micron latex spheres and anionic ferritin were not incorporated by the membrane. Cationic ferritin and 1-micron latex spheres placed in perilymph were incorporated by the inner epithelial cells, suggesting absorptive capabilities of the round window membrane. Cationic ferritin was observed within the mesothelial cells underlying the scala tympani side of the basilar membrane, suggesting a role for these cells in the inner-ear defense system. A review of the subject and a general perspective from the author's viewpoint are discussed.

Cited by 150

An invariant of the round function of QARMAv2-64

Beyne, Tim · Lirias (KU Leuven) · 2023

This note shows that there exists a nontrivial invariant for the unkeyed round function of Qarma v2-64.It is invariant under translation by a set of 2 32 constants.The invariant does not extend over all rounds of Qarma v2-64 and probably does not lead to full-round attacks.Nevertheless, it might be of interest as it can be expected to give meaningful weak-key attacks on round-reduced instances when combined with other techniques such as integral cryptanalysis.

Cited by 0Open access

Five Important Attack in Round Function Using SIMECK Algorithm

Sofu Risqi · 2018

Block cipher-based hash function is a hash function that is constructed by applying a block cipher algorithm on a scheme to form a hash algorithm. So that the strength of the block cipher-based hash function depends on the strength of a block cipher algorithm which is used. In this research, fixed point attack is done to determine the application of SIMECK lightweight block cipher scheme PGV-5 hash function in accordance with the characteristics of the five important attack. SIMECK is a new lightweight block cipher design based on the combination of SIMON and SPECK block cipher. While the design allows a smaller and more efficient hardware implementation, its security margins are not well understood. Five important attack is applied to generate all possible 2^32 plaintext with 3 random IV. The result of this research, block cipher-based hash function with PGV-5 scheme using SIMECK algorithm, is not resistant against five important attack where the probabilities to obtain collision is 0.00000000139 in the three IV random samples which are used

Cited by 0

Round about Kudla's Green function for $\textrm{SO}(3,2)$

Rolf Berndt · arXiv (Cornell University) · 2024

Kudla conjectured that certain Eisenstein series contain important arithmetical and geometric information. The following note describes a certain aspect of this general picture in the special case concerning the orthogonal group $\textrm{SO}(3,2).$

Cited by 0Open access

L.: Constant-round private function evaluation with linear complexity

Jonathan Katz, Lior Malka · 2016

Abstract. We consider the problem of private function evaluation (PFE) in the two-party setting. Here, informally, one party holds an input x while the other holds a (circuit describing a) function f; the goal is for one (or both) of the parties to learn f(x) while revealing nothing more to either party. In contrast to the usual setting of secure computation, where the function being computed is known to both parties, PFE is useful in settings where the function (i.e., algorithm) itself must remain secret, e.g., because it is proprietary or classified. It is known that PFE can be reduced to standard secure computa-tion by having the parties evaluate a universal circuit, and this is the approach taken in most prior work. Using a universal circuit, however, introduces additional overhead and results in a more complex imple-mentation. We show here a completely new technique for PFE that avoids universal circuits, and results in constant-round protocols with communication/computational complexity linear in the size of the cir-cuit computing f. This gives the first constant-round protocol for PFE with linear complexity (without using fully homomorphic encryption), even restricted to semi-honest adversaries. 1

Cited by 0

Round window membrane. Structure function and permeability: A review

Marcos V. Goycoolea, Lars Lundman · Microscopy Research and Technique · 1997

The ultrastructure of the round window membrane of humans, monkeys, felines, and rodents discloses three basic layers: an outer epithelium, a middle core of connective tissue, and an inner epithelium. Interspecies variations are mainly in terms of thickness, being thinnest in rodents and thicker in humans. Morphologic evidence suggests that the layers of the round window participate in absorption and secretion of substances to and from the inner ear, and that the entire membrane could play a role in the defense system of the ear. Different substances, including antibiotics, local anesthetics, and tracers such as cationic ferritin, horseradish peroxidase, and 1 mu latex microspheres, are placed in the middle ear side traverse the membrane. Cationic ferritin and 1 micron microspheres placed in perilymph become incorporated by the inner epithelial cells of the membrane. Permeability is selective; factors include size, concentration, liposolubility, electrical charge, and thickness of the membrane. Passage of substances through the round window membrane is by different pathways, the nature of which is seemingly decided at the outer epithelium of the round window membrane.

Cited by 213

AEUR: authenticated encryption algorithm design based on uBlock round function

Yatao YANG, Hui DONG, Jiantao LIU et al. · SHILAP Revista de lepidopterología · 2023

In order to improve the efficiency of the implementation of the authenticated encryption algorithm without compromising the security of the algorithm, a new authenticated encryption algorithm AEUR was designed.Firstly, based on the uBlock round function, with resistance to internal collision attacks as the security objective, a mixed integer linear programming approach was used to search for generic iterative component R(t,s) to meet the security objective.Secondly, the authenticated encryption algorithm AEUR was designed by using this component.AEUR consisted of two parts: authenticated encryption and decrypted verification, both of which performed the same process without the need to design additional operational sessions, reducing the algorithm’s resource consumption.In addition, the correctness of the algorithm was verified by comparing the corresponding round state values, and the security of the algorithm was analyzed using various analysis methods such as linear attacks and sliding attacks.Finally, the algorithm was implemented in C language to prove the AEUR has good performance.The results show that the proposed algorithm has a better overall performance in terms of software runtime, with efficiency improvements of 3% and 46% compared to AEGIS and ALE, and 74% and 92% compared to AES-GCM and ACORN, respectively.

Cited by 1Open access

Round function of [33] for one color of one pixel.

Wang Yao (747677), Faguo Wu (3337191), Xiao Zhang (152326) et al. · Figshare · 2016

<p>Round function of [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0165937#pone.0165937.ref033" target="_blank">33</a>] for one color of one pixel.</p>

Cited by 0Open access