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Cryptography in OpenBSD: An Overview 1 Introduction 2 ...

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Since one of the main foci of the OpenBSD system is. security various cryptographic mechanisms are ... OpenBSD section 3 covers the extensive use of ran ...

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Cryptography in OpenBSD: An Overview 1 Introduction 2 Communications SecurityPage 1Cryptography in OpenBSD: An OverviewTheo de Raadt Niklas Hallqvist Artur Grabowski Angelos D. Keromytis Niels Provosfderaadtniklasartangelosprovosg@open bsd.orgThe OpenBSD ProjectAbstractCryptographic mechanisms are an important security component of an operating system in securing the system itself and its communication paths.Indeed in many situations cryptography is theonly tool that can solve a particular problem e.g.networklevel security. While cryptography by itself does not guarantee security when applied correctly it can signicantly improve overall security.Since one of the main foci of the OpenBSD system issecurity various cryptographic mechanisms are employed in a number of dierent roles.This paper gives an overview of the cryptographyemployed in OpenBSD. We discuss the various components IPsec SSL libraries stronger password encryption Kerberos IV random number generatorsetc. their role in system security and their interactions with the rest of the system and where applicable the network .1 IntroductionAn important aspect of security in a modern operating system is cryptographic services and mechanisms. While not a security panacea cryptographyis sometimes the right tool in solving certain problems. Inparticularcryptographyisextremelyusefuli n solvinga numberofsecurityissuesin thefollowingthree areas:Network security.Secure storage facilities. Pseudo Random number generators.Since one of our goals in the OpenBSD projectis to provide strong security wehave implemented anumber of protocols and services in the base system.An OpenBSD distribution thus has full support forsuch mechanisms as IPsec SSL Kerberosetc beingunaected by export restriction laws.Simply supporting these mechanisms however isnot sucient for widespread use. We are constantlytrying to make their use as easy and where possible transparent to the end user. Thus more workis done in those mechanisms that can be ...

Source: www1.cs.columbia.edu

 

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