Results 31 to 40 of about 1,017,696 (185)

Improved Meet-in-the-Middle Preimage Attacks against AES Hashing Modes

IACR Transactions on Symmetric Cryptology, 2020
Hashing modes are ways to convert a block cipher into a hash function, and those with AES as the underlying block cipher are referred to as AES hashing modes.
Zhenzhen Bao, Lin Ding, Jian Guo, Haoyang Wang, Wenying Zhang   +4 more
doaj   +1 more source

A General Construction of Tweakable Block Ciphers and Different Modes of Operations [PDF]

IEEE Transactions on Information Theory, 2006
This work builds on earlier work by Rogaway at Asiacrypt 2004 on tweakable block cipher (TBC) and modes of operations. Our first contribution is to generalize Rogaway's TBC construction by working over a ring and by the use of a masking sequence of functions. The ring can be instantiated as either GF or as .
Debrup Chakraborty, Palash Sarkar 0001
openaire   +3 more sources

Prophage Activation Triggers Extracellular Synthesis of DNA in Bacterial Biofilms via Rolling Circle Replication

Angewandte Chemie, EarlyView.
Shewanella oneidensis and Bacillus subtilis, both harboring prophages, reveal a novel biosynthetic route to scalable and programmable DNA superstructures in flower‐ and wire‐like shapes, respectively. Activation of prophages is achieved via 3‐hour starvation and monitored using reporter strains.
Gabriel Antonio S. Minero, Line Mørkholt Lund, Lasse Hyldgaard Klausen, Obinna Markraphael Ajunwa, Mingdong Dong, Rikke Louise Meyer, Victoria Birkedal, Kai Thormann   +7 more
wiley   +2 more sources

Adenylation Domain Engineering Enables Biosynthesis of an Improved Polymyxin Antibiotic

Angewandte Chemie, EarlyView.
To enable incorporation of l‐2‐aminodecanoic acid into polymyxin by fermentation, a single Trp‐to‐Ala substitution is rationally introduced into the adenylation‐domain residue of its nonribosomal peptide synthetase (NRPS) and efficiently switches substrate selectivity. The engineered strain produces biologically active Ada‐polymyxin, demonstrating that
Maximilian Müll, Pia Lanvers, Giulia Ravagnan, Kilian Klaus, Olena Nosovska, Ivan Vilotijevic, Jochen Schmid, Hajo Kries   +7 more
wiley   +2 more sources

HCTR+: An Optimally Secure TBC-Based Accordion Mode

IACR Transactions on Symmetric Cryptology
The design of tweakable wide-block ciphers has advanced significantly over the past two decades. This evolution began with the wide-block cipher by Naor and Reingold.
Nilanjan Datta, Avijit Dutta, Shibam Ghosh, Eik List, Hrithik Nandi   +4 more
doaj   +1 more source

Linear Cryptanalysis: Key Schedules and Tweakable Block Ciphers

IACR Transactions on Symmetric Cryptology, 2017
This paper serves as a systematization of knowledge of linear cryptanalysis and provides novel insights in the areas of key schedule design and tweakable block ciphers. We examine in a step by step manner the linear hull theorem in a general and consistent setting.
Thorsten Kranz, Gregor Leander, Friedrich Wiemer   +2 more
openaire   +4 more sources

Clustering Related-Tweak Characteristics: Application to MANTIS-6

IACR Transactions on Symmetric Cryptology, 2018
The TWEAKEY/STK construction is an increasingly popular approach for designing tweakable block ciphers that notably uses a linear tweakey schedule. Several recent attacks have analyzed the implications of this approach for differential cryptanalysis and ...
Maria Eichlseder, Daniel Kales
doaj   +1 more source

Practical Key-Recovery Attack on MANTIS5

IACR Transactions on Symmetric Cryptology, 2017
MANTIS is a lightweight tweakable block cipher published at CRYPTO 2016. In addition to the full 14-round version, MANTIS7, the designers also propose an aggressive 10-round version, MANTIS5.
Christoph Dobraunig, Maria Eichlseder, Daniel Kales, Florian Mendel   +3 more
doaj   +1 more source

Zero-Correlation Attacks on Tweakable Block Ciphers with Linear Tweakey Expansion [PDF]

IACR Transactions on Symmetric Cryptology, 2019
The design and analysis of dedicated tweakable block ciphers is a quite recent and very active research field that provides an ongoing stream of new insights. For instance, results of Kranz, Leander, and Wiemer from FSE 2017 show that the addition of a tweak using a linear tweak schedule does not introduce new linear characteristics.
Ralph Ankele, Christoph Dobraunig, Jian Guo 0001, Eran Lambooij, Gregor Leander, Yosuke Todo   +5 more
openaire   +9 more sources

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

Advanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong, James Trevarthen, Igor Dolbnya, Wadwan Singhapong, Nicholas Pilato, Richard Butler, Jiraphant Srisuriyachot, Alexander J. G. Lunt   +7 more
wiley   +1 more source