The document discusses using SAT solvers to break proprietary ciphers. SAT solvers use a Boolean logic approach to solve cryptographic problems by converting them into conjunctive normal form (CNF) and then attempting to satisfy all clauses. As an example, a toy cipher is broken by modeling it as a SAT problem and allowing the solver to search for a solution through guessing variable assignments. Commercial ciphers can also be reverse engineered and tested against using CryptoMiniSat, a free software SAT solver designed for cryptanalysis.
The document provides musical notation for the song "Cepa Andaluza" by Paco de Lucia. It includes 3 sections of musical notation written in standard musical notation format across 23 lines. The notation indicates the rhythm, chords, and melodic elements of the song.
O documento discute o conceito de assertividade, definido como falar e agir com sinceridade e sem agressividade, defendendo o espaço vital de forma equilibrada. Apresenta as características de uma pessoa assertiva, como expressar sentimentos com calma e ter uma posição clara, e os princípios da assertividade, como comunicação de qualidade e respeito mútuo. Contrasta com a pessoa não assertiva, que tende a ceder à vontade dos outros para evitar conflitos.
The document outlines the University of Florida's social media strategy and objectives. It includes an audit of their current social media presence on platforms like Instagram, Twitter, and Facebook. It identifies goals like increasing engagement and brand awareness. The strategy outlines roles and responsibilities, as well as policies and procedures for responding to critical incidents on social media.
This document summarizes a presentation on digital library futures given at the 2009 IFLA Congress in Milan. The presentation discussed institutional strategies and the user perspective, including users' frenetic information seeking behaviors. It also addressed issues like usability, content producers, and challenges around duplication of efforts, standardization, and copyright. The presentation proposed both archival and access to knowledge approaches and emphasized the need for libraries to facilitate access, socialization of collections, and international collaboration and exchange of resources.
Catalog Enrichment for RDA - Adding relationship designators (in Koha) [text]Stefano Bargioni
Relationship designators are used to specify the relationship between a resource and a person, family, or corporate body associated with that resource. This presentation shows how they were added to the catalog of the library of the Pontificia Università della Santa Croce, in new and -mostly automatic- to legacy records. The Name Cloud, a way to navigate the catalog through related authors, is also shown.
O documento discute modelagem de negócios criativa focada no usuário. Ele destaca a importância de ouvir os desejos dos usuários, criar soluções viáveis e implementá-las de forma prática, dividindo o processo em níveis estratégico, tático e operacional. O documento também apresenta o framework iDelta para modelagem de negócios.
Slides aula 1 introdução ao empreendedorismo rev.samGirlany Rino
O empreendedorismo vem crescendo no Brasil desde os anos 1990. É definido como a transformação de ideias em oportunidades através do envolvimento de pessoas e processos. Um empreendedor é movido por perceber uma necessidade, criar uma ideia para atendê-la e transformar seu trabalho em dinheiro.
Slides aula 9 plano de marketing rev.samGirlany Rino
O documento discute os 4 P's do marketing mix - Produto, Preço, Praça e Promoção. Ele explica que o plano de marketing é um planejamento do marketing mix de uma organização que orienta o processo decisório de marketing. Ele também lista os principais itens a serem descritos no plano de marketing, incluindo estratégias promocionais, público-alvo, estrutura de comercialização e localização do negócio.
The document provides musical notation for the song "Cepa Andaluza" by Paco de Lucia. It includes 3 sections of musical notation written in standard musical notation format across 23 lines. The notation indicates the rhythm, chords, and melodic elements of the song.
O documento discute o conceito de assertividade, definido como falar e agir com sinceridade e sem agressividade, defendendo o espaço vital de forma equilibrada. Apresenta as características de uma pessoa assertiva, como expressar sentimentos com calma e ter uma posição clara, e os princípios da assertividade, como comunicação de qualidade e respeito mútuo. Contrasta com a pessoa não assertiva, que tende a ceder à vontade dos outros para evitar conflitos.
The document outlines the University of Florida's social media strategy and objectives. It includes an audit of their current social media presence on platforms like Instagram, Twitter, and Facebook. It identifies goals like increasing engagement and brand awareness. The strategy outlines roles and responsibilities, as well as policies and procedures for responding to critical incidents on social media.
This document summarizes a presentation on digital library futures given at the 2009 IFLA Congress in Milan. The presentation discussed institutional strategies and the user perspective, including users' frenetic information seeking behaviors. It also addressed issues like usability, content producers, and challenges around duplication of efforts, standardization, and copyright. The presentation proposed both archival and access to knowledge approaches and emphasized the need for libraries to facilitate access, socialization of collections, and international collaboration and exchange of resources.
Catalog Enrichment for RDA - Adding relationship designators (in Koha) [text]Stefano Bargioni
Relationship designators are used to specify the relationship between a resource and a person, family, or corporate body associated with that resource. This presentation shows how they were added to the catalog of the library of the Pontificia Università della Santa Croce, in new and -mostly automatic- to legacy records. The Name Cloud, a way to navigate the catalog through related authors, is also shown.
O documento discute modelagem de negócios criativa focada no usuário. Ele destaca a importância de ouvir os desejos dos usuários, criar soluções viáveis e implementá-las de forma prática, dividindo o processo em níveis estratégico, tático e operacional. O documento também apresenta o framework iDelta para modelagem de negócios.
Slides aula 1 introdução ao empreendedorismo rev.samGirlany Rino
O empreendedorismo vem crescendo no Brasil desde os anos 1990. É definido como a transformação de ideias em oportunidades através do envolvimento de pessoas e processos. Um empreendedor é movido por perceber uma necessidade, criar uma ideia para atendê-la e transformar seu trabalho em dinheiro.
Slides aula 9 plano de marketing rev.samGirlany Rino
O documento discute os 4 P's do marketing mix - Produto, Preço, Praça e Promoção. Ele explica que o plano de marketing é um planejamento do marketing mix de uma organização que orienta o processo decisório de marketing. Ele também lista os principais itens a serem descritos no plano de marketing, incluindo estratégias promocionais, público-alvo, estrutura de comercialização e localização do negócio.
This document contains C++ code that implements an adaptive Runge-Kutta Fehlberg method (RKFM) for numerically solving ordinary differential equations. It defines classes and functions for initializing the RKFM algorithm, calculating successive approximations, and checking error tolerances to adapt the step size accordingly. The main function initializes an RKFM object and calls its runIt() method to iteratively apply the algorithm up to 200 times or until the integration range is complete.
Algebra and Trigonometry 9th Edition Larson Solutions Manualkejeqadaqo
This document contains a chapter prerequisites section from a college algebra textbook. It covers reviewing real numbers and their properties, exponents and radicals, polynomials and special products, factoring polynomials, and the rectangular coordinate system and graphs. The section includes examples and exercises to help students review these important algebra topics before continuing in the textbook.
The document describes the design of a discrete-time decoupling control system for a two-input, two-output system. Channel 1 uses an output feedback controller with a settling time of 2 seconds and 10% overshoot, while channel 2 uses a state variable feedback controller with a state observer and has a settling time of 4 seconds and 0% overshoot. The controller designs, including transfer function models and filter/controller calculations, are shown. Simulation results demonstrating the decoupled control of each channel are also presented.
This document discusses a technique called "data smashing" for zero-knowledge feature-free anomaly detection in data. Data smashing involves quantizing, inverting, and comparing signals to detect anomalies without extracting or using features from the data. It allows detection of deviations from normal patterns in an unlabeled dataset in a way that preserves privacy and limits assumptions about the data's features or generation process.
Likelihood approximation with parallel hierarchical matrices for large spatia...Alexander Litvinenko
First, we use hierarchical matrices to approximate large Matern covariance matrices and the loglikelihood. Second, we find a maximum of loglikelihood and estimate 3 unknown parameters (covariance length, smoothness and variance).
The goal is to improve parameter estimation for daily moisture field in Mississippi basin. We use maximum likelihood method to estimate unknown parameters of Matern covariance. To speed up computations we apply parallel hierarchical matrices.
This document discusses game theory concepts including payoff matrices, expected value, strategies, and equilibriums. It provides examples of games of chance with dice and network programming decisions between TV stations. Key points covered include finding optimal strategies that maximize minimum payoff or minimize maximum loss, and determining whether games have a pure strategy equilibrium or require mixed strategies based on payoff matrix properties.
This document contains code for various MATLAB plotting and visualization techniques including line plots, bar plots, pie charts, surface plots, mesh plots, contour plots, and more. Functions are defined to calculate distance, velocity, acceleration from time inputs and to convert between degrees and radians in a table. Loops, conditional statements, and input/output are used to prompt for and display results.
This document summarizes methods for performing causality and determinacy tests on time series data using R scripts. It describes:
1. Implementing the Test(S), Test(ABN), Test(CS), Test(D) methods to test for stationarity, abnormalities, causality, and determinacy in money velocity time series data.
2. Using R functions like scan(), log(), diff(), scale2() to transform data and $testCS, $plotTestCS, $testD, $plotTestD to run the tests and visualize results.
3. Applying the tests to money velocity data in Japan from 1955-2001 to analyze causality and determinacy properties over time.
This document appears to be pages from a mathematics textbook. It contains over 80 numbered problems and explanations related to skills like rounding, order of operations, fractions, decimals, percentages and more. The problems range in complexity from basic rounding to multiple step word problems. The document provides worked examples and explanations to help students learn essential math concepts and skills.
To Compute GCD and LCM String Manipulation , Operations on string length, concatenation, reverse, counting, and copy of a string to another, Matrices, Matrix Addition, Subtraction, Multiplication, Transpose of n x m matrices, Inverse of a square matrix, Searching, Binary Search,GCD , LCM String Manipulation , Operations STRING,string length, concatenation, reverse, counting, copy of a string, Matrices, Matrix Addition, Subtraction, Multiplication, Transpose,n x m matrices, Inverse MATRIX,square matrix, Searching, Binary Search,C PROGRAM,C,PROGRAMMING,SIMPLE C, EXAMPLE C,LAB PROGRAMS,LAB, C EXERCISES,thiruvalluvar university,lab manual,c lab manual
Também conhecido como o “Time Lock Puzzle”, o LCS35 é um desafio em forma de criptografia projetado em 1999 pelo pesquisador Ron Rivest, do Instituto de Tecnologia de Massachusetts (MIT). Quando este problema matemático for resolvido, uma cápsula do tempo de chumbo será aberta no MIT.
O puzzle envolve a divisão de um número incrivelmente enorme, por um número que é apenas um pouco menor que o da conta (mas ainda com mais de 600 dígitos).
Ninguém sabe o que está dentro da capsula e, segundo os dados de Rivest, estima-se que levaria cerca de 35 anos para que o enigma seja resolvido. Os interessados ainda terão de esperar para descobrir o que de fato tem na capsula.
論文紹介 Hyperkernel: Push-Button Verification of an OS Kernel (SOSP’17)mmisono
The document summarizes the Hyperkernel paper which presents a method for formally verifying an OS kernel. The key points are:
1) Hyperkernel transforms the kernel implementation into a finite-state model and verifies it is correct with respect to declarative specifications using SMT solvers.
2) It isolates the kernel from user processes using virtualization techniques like VT-x and verifies the kernel implementation is isolated and cannot be affected by user processes.
3) Hyperkernel transforms the xv6 kernel implementation into LLVM IR and links it with a verified hypercall interface to isolate the kernel while retaining most of the original xv6 source code. It successfully verifies isolation and functional correctness of the transformed kernel.
PVS-Studio team experience: checking various open source projects, or mistake...Andrey Karpov
To let the world know about our product, we check open-source projects. By the moment we have checked 245 projects. A side effect: we found 9574 errors and notified the authors about them.
Sequential Learning in the Position-Based Modelrecsysfr
This document discusses sequential learning in the position-based model for multi-armed bandit problems. It presents the position-based model and describes how it can be applied to problems like website optimization and online advertising placement. It also introduces the C-KLUCB and BM-KLUCB algorithms for these applications and provides analysis on the regret lower bounds of algorithms in both problems. The key takeaway is that real-world bandit algorithms are becoming more sophisticated but there is still room for improvement, especially in addressing challenges like delays and higher-rank models.
The document contains MATLAB code for signal processing lab experiments. It includes code to:
1. Generate and plot sequences based on the user's roll number.
2. Define custom functions to generate basic sequences like unit sample, unit step, exponential rise and decay.
3. Plot signals together and manipulate signals using operations like convolution.
4. Quantize signals and calculate signal-to-quantization noise ratio (SQNR).
5. Perform operations like filtering using transfer functions and z-transforms.
6. Implement the discrete Fourier transform and inverse discrete Fourier transform using a custom function.
Ernest f. haeussler, richard s. paul y richard j. wood. matemáticas para admi...Jhonatan Minchán
Ernest f. haeussler, richard s. paul y richard j. wood. matemáticas para administración y economía. (12ª edición). año de edición 2012. editorial pearson
Solucionario de matemáticas para administación y economiaLuis Perez Anampa
This document contains the table of contents for a 17 chapter book on introductory mathematical analysis. It lists the chapter numbers and titles. The document also contains two sections of math problems related to topics in algebra such as integers, rational numbers, operations with numbers, and algebraic expressions. The problems are multiple choice or require short solutions showing steps to solve equations or expressions.
This document appears to be the table of contents and problems from Chapter 0 of a mathematics textbook. The table of contents lists 17 chapters and their corresponding page numbers. The problems cover a range of algebra topics including integers, rational numbers, properties of operations, solving equations, and rational expressions. There are over 70 problems presented without solutions for students to work through.
This document contains C++ code that implements an adaptive Runge-Kutta Fehlberg method (RKFM) for numerically solving ordinary differential equations. It defines classes and functions for initializing the RKFM algorithm, calculating successive approximations, and checking error tolerances to adapt the step size accordingly. The main function initializes an RKFM object and calls its runIt() method to iteratively apply the algorithm up to 200 times or until the integration range is complete.
Algebra and Trigonometry 9th Edition Larson Solutions Manualkejeqadaqo
This document contains a chapter prerequisites section from a college algebra textbook. It covers reviewing real numbers and their properties, exponents and radicals, polynomials and special products, factoring polynomials, and the rectangular coordinate system and graphs. The section includes examples and exercises to help students review these important algebra topics before continuing in the textbook.
The document describes the design of a discrete-time decoupling control system for a two-input, two-output system. Channel 1 uses an output feedback controller with a settling time of 2 seconds and 10% overshoot, while channel 2 uses a state variable feedback controller with a state observer and has a settling time of 4 seconds and 0% overshoot. The controller designs, including transfer function models and filter/controller calculations, are shown. Simulation results demonstrating the decoupled control of each channel are also presented.
This document discusses a technique called "data smashing" for zero-knowledge feature-free anomaly detection in data. Data smashing involves quantizing, inverting, and comparing signals to detect anomalies without extracting or using features from the data. It allows detection of deviations from normal patterns in an unlabeled dataset in a way that preserves privacy and limits assumptions about the data's features or generation process.
Likelihood approximation with parallel hierarchical matrices for large spatia...Alexander Litvinenko
First, we use hierarchical matrices to approximate large Matern covariance matrices and the loglikelihood. Second, we find a maximum of loglikelihood and estimate 3 unknown parameters (covariance length, smoothness and variance).
The goal is to improve parameter estimation for daily moisture field in Mississippi basin. We use maximum likelihood method to estimate unknown parameters of Matern covariance. To speed up computations we apply parallel hierarchical matrices.
This document discusses game theory concepts including payoff matrices, expected value, strategies, and equilibriums. It provides examples of games of chance with dice and network programming decisions between TV stations. Key points covered include finding optimal strategies that maximize minimum payoff or minimize maximum loss, and determining whether games have a pure strategy equilibrium or require mixed strategies based on payoff matrix properties.
This document contains code for various MATLAB plotting and visualization techniques including line plots, bar plots, pie charts, surface plots, mesh plots, contour plots, and more. Functions are defined to calculate distance, velocity, acceleration from time inputs and to convert between degrees and radians in a table. Loops, conditional statements, and input/output are used to prompt for and display results.
This document summarizes methods for performing causality and determinacy tests on time series data using R scripts. It describes:
1. Implementing the Test(S), Test(ABN), Test(CS), Test(D) methods to test for stationarity, abnormalities, causality, and determinacy in money velocity time series data.
2. Using R functions like scan(), log(), diff(), scale2() to transform data and $testCS, $plotTestCS, $testD, $plotTestD to run the tests and visualize results.
3. Applying the tests to money velocity data in Japan from 1955-2001 to analyze causality and determinacy properties over time.
This document appears to be pages from a mathematics textbook. It contains over 80 numbered problems and explanations related to skills like rounding, order of operations, fractions, decimals, percentages and more. The problems range in complexity from basic rounding to multiple step word problems. The document provides worked examples and explanations to help students learn essential math concepts and skills.
To Compute GCD and LCM String Manipulation , Operations on string length, concatenation, reverse, counting, and copy of a string to another, Matrices, Matrix Addition, Subtraction, Multiplication, Transpose of n x m matrices, Inverse of a square matrix, Searching, Binary Search,GCD , LCM String Manipulation , Operations STRING,string length, concatenation, reverse, counting, copy of a string, Matrices, Matrix Addition, Subtraction, Multiplication, Transpose,n x m matrices, Inverse MATRIX,square matrix, Searching, Binary Search,C PROGRAM,C,PROGRAMMING,SIMPLE C, EXAMPLE C,LAB PROGRAMS,LAB, C EXERCISES,thiruvalluvar university,lab manual,c lab manual
Também conhecido como o “Time Lock Puzzle”, o LCS35 é um desafio em forma de criptografia projetado em 1999 pelo pesquisador Ron Rivest, do Instituto de Tecnologia de Massachusetts (MIT). Quando este problema matemático for resolvido, uma cápsula do tempo de chumbo será aberta no MIT.
O puzzle envolve a divisão de um número incrivelmente enorme, por um número que é apenas um pouco menor que o da conta (mas ainda com mais de 600 dígitos).
Ninguém sabe o que está dentro da capsula e, segundo os dados de Rivest, estima-se que levaria cerca de 35 anos para que o enigma seja resolvido. Os interessados ainda terão de esperar para descobrir o que de fato tem na capsula.
論文紹介 Hyperkernel: Push-Button Verification of an OS Kernel (SOSP’17)mmisono
The document summarizes the Hyperkernel paper which presents a method for formally verifying an OS kernel. The key points are:
1) Hyperkernel transforms the kernel implementation into a finite-state model and verifies it is correct with respect to declarative specifications using SMT solvers.
2) It isolates the kernel from user processes using virtualization techniques like VT-x and verifies the kernel implementation is isolated and cannot be affected by user processes.
3) Hyperkernel transforms the xv6 kernel implementation into LLVM IR and links it with a verified hypercall interface to isolate the kernel while retaining most of the original xv6 source code. It successfully verifies isolation and functional correctness of the transformed kernel.
PVS-Studio team experience: checking various open source projects, or mistake...Andrey Karpov
To let the world know about our product, we check open-source projects. By the moment we have checked 245 projects. A side effect: we found 9574 errors and notified the authors about them.
Sequential Learning in the Position-Based Modelrecsysfr
This document discusses sequential learning in the position-based model for multi-armed bandit problems. It presents the position-based model and describes how it can be applied to problems like website optimization and online advertising placement. It also introduces the C-KLUCB and BM-KLUCB algorithms for these applications and provides analysis on the regret lower bounds of algorithms in both problems. The key takeaway is that real-world bandit algorithms are becoming more sophisticated but there is still room for improvement, especially in addressing challenges like delays and higher-rank models.
The document contains MATLAB code for signal processing lab experiments. It includes code to:
1. Generate and plot sequences based on the user's roll number.
2. Define custom functions to generate basic sequences like unit sample, unit step, exponential rise and decay.
3. Plot signals together and manipulate signals using operations like convolution.
4. Quantize signals and calculate signal-to-quantization noise ratio (SQNR).
5. Perform operations like filtering using transfer functions and z-transforms.
6. Implement the discrete Fourier transform and inverse discrete Fourier transform using a custom function.
Ernest f. haeussler, richard s. paul y richard j. wood. matemáticas para admi...Jhonatan Minchán
Ernest f. haeussler, richard s. paul y richard j. wood. matemáticas para administración y economía. (12ª edición). año de edición 2012. editorial pearson
Solucionario de matemáticas para administación y economiaLuis Perez Anampa
This document contains the table of contents for a 17 chapter book on introductory mathematical analysis. It lists the chapter numbers and titles. The document also contains two sections of math problems related to topics in algebra such as integers, rational numbers, operations with numbers, and algebraic expressions. The problems are multiple choice or require short solutions showing steps to solve equations or expressions.
This document appears to be the table of contents and problems from Chapter 0 of a mathematics textbook. The table of contents lists 17 chapters and their corresponding page numbers. The problems cover a range of algebra topics including integers, rational numbers, properties of operations, solving equations, and rational expressions. There are over 70 problems presented without solutions for students to work through.
2. Story line
1 HiTag2: reverse-engineered proprietary cipher
2 Analytic tools are needed to investigate them
3 CryptoMiniSat: free software tool to test ciphers (and to break them)
2
3. Philips HiTag2 Cipher
For access control: cars, army buildings
Proprietary: reverse-engineered by Karsten Nohl and Sean O’Neil
Feedback linear(!), filter non-linear
3
4. SAT Solvers
Input: CNF, an “and of or-s’
(x1 ∨ ¬x3) ∧ (¬x2 ∨ x3) ∧ (x1 ∨ x2)
Crypto-problem needs conversion
Uses DPLL(ϕ) algorithm
1 If (formula ϕ trivial) return SAT/UNSAT
2 ret ← DPLL(ϕ with v ← true)
3 If (ret = SAT) return SAT
4 ret ← DPLL(ϕ with v ← false)
5 If (ret = SAT) return SAT
6 return UNSAT
4
7. CryptoMiniSat
SAT solver that excels at cryptography
General purpose: won SAT Race’10
0
1000
2000
3000
4000
5000
6000
80 100 120 140 160 180 200 220 240
Time(s)
No. solved instances from SAT Comp’09
MiniSat 2.2
lingeling
PrecoSat465
CryptoMiniSat SAT Comp’11
Collaborative: GPL, mailing list, regular releases
7
8. Demo
1 Generate HiTag2 problem: Grain-of-Salt tool
2 Solve it using CryptoMiniSat
3 Analyse results: ≈ 2 days to break
8
9. Conclusion
SAT solvers are powerful tools to break weak cryptography
CryptoMiniSat, a leading SAT solver, is waiting for your contribution
Weak ciphers like HiTag2 should not be used in high-value applications
9