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Approximate Trapdoors for Lattices and Smaller Hash-and-Sign Signatures
Digital Signature Lattice
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2019/9/16
We study a relaxed notion of lattice trapdoor called approximate trapdoor, which is defined to be able to invert Ajtai's one-way function approximately instead of exactly. The primary motivation of ou...
New Circuit Minimization Techniques for Smaller and Faster AES SBoxes
AES SBox circuit area circuit depth
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2019/7/15
In this paper we consider various methods and techniques to find the smallest circuit realizing a given linear transformation on nn input signals and mm output signals, with a constraint of a maximum ...
Tweaking the Asymmetry of Asymmetric-Key Cryptography on Lattices: KEMs and Signatures of Smaller Sizes
lattice public-key encryption digital signature
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2019/5/21
Lattice-based cryptosystems are less efficient than their number-theoretic counterparts (based on RSA, discrete logarithm, etc.) in terms of key and ciphertext (signature) sizes. For adequate security...
Compact Multi-Signatures for Smaller Blockchains
ASM Smaller Blockchains
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2018/5/28
We construct new multi-signature schemes that provide new functionality. Our schemes are designed to reduce the size of the Bitcoin blockchain, but are useful in many other settings where multi-signat...
Field lifting for smaller UOV public keys
Post-Quantum Cryptography Multivariate Cryptography Signature Schemes
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2017/8/17
Most Multivariate Quadratic (MQ) signature schemes have a very large public key, which makes them unsuitable for many applications, despite attractive features such as speed and small signature sizes....
On Decomposition of an NFSR into a Cascade Connection of Two Smaller
stream ciphers nonlinear feedback shift registers
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2016/1/8
Nonlinear feedback shift registers (NFSRs) are an important type of sequence
generators used for building stream ciphers. The shift register used in Grain, one
of eSTREAM finalists, is a cascade con...
Smaller Keys for Code-Based Cryptography: QC-MDPC McEliece Implementations on Embedded Devices
MDPC LDPC FPGA
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2015/12/30
In the last years code-based cryptosystems were established as promising alternatives for
asymmetric cryptography since they base their security on well-known NP-hard problems and still
show decent ...
Establishing windbreaks: how rapidly do the smaller tree transplants reach the height of the larger ones?
landscape rehabilitation arable soil
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2015/5/5
The aim of this study is to identify a period of time over which smaller, less costly tree transplants can
reach the height of larger tree transplants and thus offset their performance. The followin...
BLAKE2: simpler, smaller, fast as MD5
hash functions tree hashing
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2014/3/12
We present the hash function BLAKE2, an improved version of the SHA-3 finalist BLAKE optimized for speed in software. Target applications include cloud storage, intrusion detection, or version control...
Schooling has Smaller or Insignificant Effects on Adult Health in the US than Suggested by Cross-Sectional Associations: New Estimates Using Relatively Large Samples of Identical Twins
Schooling, Education, Twins, Adult Health, Cross-Sectional Data, Mid-Atlantic Twin Registry Minnesota Twin Registry NAS-NRC Twin Registry of WWII Military Veterans Health Outcomes Schooling Attainment
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2014/3/31
Adult health outcomes and health behaviors generally are strongly associated with schooling attainment. But such associations do not necessarily imply that schooling has causal effects on health outco...
Fewer Jobs or Smaller Paychecks? Aggregate Crisis Impacts in Selected Middle-Income Countries
middle-income countries labor markets recession
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2012/10/24
This paper reviews evidence from 44 middle income countries on how the recent financial crisis affected jobs and workers' income. In addition to providing a rare assessment of the magnitude of the imp...
Trapdoors for Lattices: Simpler, Tighter, Faster, Smaller
public-key cryptography / lattice cryptography lattice trapdoors
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2012/3/26
We give new methods for generating and using ``strong trapdoors'' in cryptographic lattices, which are simultaneously simple, efficient, easy to implement (even in parallel), and asymptotically optima...
The Great Escape: How Exoplanets and Smaller Bodies Desert Dying Stars
planet-star interactions planets supernovae: general
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2011/9/29
Mounting discoveries of extrasolar planets orbiting post-main sequence stars motivate studies aimed at understanding the fate of these planets. In the traditional "adiabatic" approximation, a secondar...
On Weyl sums for smaller exponents
On Weyl sums smaller exponents
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2010/11/22
We present a hybrid approach to bounding exponential sums over kth powers via Vinogradov's mean value theorem, and derive estimates of utility for exponents k of intermediate size.
Smaller population size at the MRCA time for stationary branching processes
Branching process most recent common ancestor bottleneck genealogy
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2010/11/30
We present an elementary model of random size varying population given by a stationary continuous state branching process. For this model we compute the joint distribution
of: the time to the most re...