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Ring Signatures: Logarithmic-Size, No Setup --- from Standard Assumptions
ring signatures linkable ring signatures standard model
2019/3/1
Ring signatures allow for creating signatures on behalf of an ad hoc group of signers, hiding the true identity of the signer among the group. A natural goal is to construct a ring signature scheme fo...
Sub-logarithmic Distributed Oblivious RAM with Small Block Size
Oblivious RAM Multi-Server Setting Secure Computation
2019/1/26
Oblivious RAM (ORAM) is a cryptographic primitive that allows a client to securely execute RAM programs over data that is stored in an untrusted server. Distributed Oblivious RAM is a variant of ORAM,...
Poly-Logarithmic Side Channel Rank Estimation via Exponential Sampling
Side Channel Rank Estimation Key Enumeration
2018/11/13
Rank estimation is an important tool for a side-channel evaluations laboratories. It allows estimating the remaining security after an attack has been performed, quantified as the time complexity and ...
Approximating Private Set Union/Intersection Cardinality with Logarithmic Complexity
Private Set Union Cardinality Private Set Intersection Cardinality Privacy Preserving Data Mining
2018/5/28
The computation of private set union/intersection cardinality (PSU-CA/PSI-CA) is one of the most intensively studied problems in Privacy Preserving Data Mining (PPDM). However, existing protocols are ...
PanORAMa: Oblivious RAM with Logarithmic Overhead
Oblivious RAM Oblivious Shuffle Oblivious Hash Table
2018/5/2
the input has a certain level of entropy. We combine these two primitives to improve the shuffle time in our hierarchical ORAM construction by avoiding heavy oblivious shuffles and leveraging entropy ...
The discrete logarithm problem over prime fields: the safe prime case. The Smart attack, non-canonical lifts and logarithmic derivatives
non-canonical lifts logarithmic derivatives
2017/3/6
The discrete logarithm problem over prime fields: the safe prime case. The Smart attack, non-canonical lifts and logarithmic derivatives.
Topology-Hiding Computation Beyond Logarithmic Diameter
topology hiding multi party computation broadcast voting
2017/2/20
A distributed computation in which nodes are connected by a partial communication graph is called \emph{topology-hiding} if it does not reveal information about the graph (beyond what is revealed by t...
Conversion from Arithmetic to Boolean Masking with Logarithmic Complexity
Side-channel attack first-order countermeasure arithmetic to Boolean conversion
2016/1/6
A general method to protect a cryptographic algorithm against side-channel attacks consists in masking all intermediate variables with a random value. For cryptographic algorithms combining Boolean op...
SOME REMARKS ON THE LOGARITHMIC SIGNATURES OF FINITE ABELIAN GROUPS
logarithmic signatures quasi-logarithmic signatures cyclic 2-group
2015/12/22
In the paper about the cryptosystem MST3, Svaba and Trung proposed
a way to build a cryptosystem based on the concept of logarithmic signatures,
and they choose Suzuki’s group, which is not abelian ...
LOGARITHMIC SOBOLEV INEQUALITIES FOR FINITE MARKOV CHAINS
Sobolev inequality MARKOV CHAINS
2015/8/26
This is an expository paper on the use of logarithmic Sobolev inequalities
for bounding rates of convergence of Markov chains on finite state
spaces to their stationary distributions. Logarithmic So...
Let each of n particles starting at the origin in Z2 perform simple random walk until reaching a site with no other particles. Lawler, Bramson, and Griffeath proved that the resulting random set A(n) ...
The logarithmic delay of KPP fronts in a periodic medium
logarithmic delay KPP fronts periodic medium
2015/7/14
We consider solutions of the KPP-type equations with a periodically varying reaction rate, and compactly supported initial data. It has been shown by Bramson [5, 6] in the case of the constant reactio...
A short proof of the logarithmic Bramson correction in Fisher-KPP equations
logarithmic Bramson correction Fisher-KPP equations
2015/7/14
In this paper, we explain in simple PDE terms a famous result of Bramson about the logarithmic delay of the position of the solutions u(t, x) of Fisher-KPP reaction-diffusion equations in R, with resp...
LOGARITHMIC SOBOLEV INEQUALITIES FOR FINITE MARKOV CHAINS
Logarithmic sobolev limited markov chain the inequality
2015/7/14
LOGARITHMIC SOBOLEV INEQUALITIES FOR FINITE MARKOV CHAINS。
稻谷籽粒内部水分扩散的快慢决定了干燥速率。本文基于Logarithmic方程,建立稻谷水分传递动力学模型,并分析热风温度(40、50、60、70℃)和风速(0.3、0.4、0.5 m/s)对稻谷(湿基水分含量23.4%)有效水分扩散系数和扩散活化能的影响。结果表明:随着干燥温度和风速的上升,稻谷干燥速率提高,同时对应的有效水分扩散系数越大,分别为5.123×10-12~2.141×10-11m~2...