The Hash Function Blake

Author: Jean-Philippe Aumasson
Publisher: Springer
ISBN: 3662447576
Size: 34.18 MB
Format: PDF, ePub, Mobi
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The Hash Function Blake. This is a comprehensive description of the cryptographic hash function BLAKE, one of the five final contenders in the NIST SHA3 competition, and of BLAKE2, an improved version popular among developers. It describes how BLAKE was designed and why BLAKE2 was developed, and it offers guidelines on implementing and using BLAKE, with a focus on software implementation. In the first two chapters, the authors offer a short introduction to cryptographic hashing, the SHA3 competition and BLAKE. They review applications of cryptographic hashing, they describe some basic notions such as security definitions and state-of-the-art collision search methods and they present SHA1, SHA2 and the SHA3 finalists. In the chapters that follow, the authors give a complete description of the four instances BLAKE-256, BLAKE-512, BLAKE-224 and BLAKE-384; they describe applications of BLAKE, including simple hashing with or without a salt and HMAC and PBKDF2 constructions; they review implementation techniques, from portable C and Python to AVR assembly and vectorized code using SIMD CPU instructions; they describe BLAKE’s properties with respect to hardware design for implementation in ASICs or FPGAs; they explain BLAKE's design rationale in detail, from NIST’s requirements to the choice of internal parameters; they summarize the known security properties of BLAKE and describe the best attacks on reduced or modified variants; and they present BLAKE2, the successor of BLAKE, starting with motivations and also covering its performance and security aspects. The book concludes with detailed test vectors, a reference portable C implementation of BLAKE, and a list of third-party software implementations of BLAKE and BLAKE2. The book is oriented towards practice – engineering and craftsmanship – rather than theory. It is suitable for developers, engineers and security professionals engaged with BLAKE and cryptographic hashing in general and for applied cryptography researchers and students who need a consolidated reference and a detailed description of the design process, or guidelines on how to design a cryptographic algorithm.

Hash

Author: Torgny Lindgren
Publisher: Bloomsbury Academic
ISBN: 9780715632642
Size: 37.67 MB
Format: PDF, ePub, Docs
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Hash. In a small town where an epidemic of tuberculosis rages, Robert Maser, a travelling garment salesman arrives and persuades the local schoolteacher, Lars, to join him on a bizarre quest to find the world's best Swedish hash. Together they wander the Swedish countryside to sample the variety of humble family recipes.

Hash House Lingo

Author: Jack Smiley
Publisher: Courier Corporation
ISBN: 0486481123
Size: 76.68 MB
Format: PDF, ePub, Mobi
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Hash House Lingo. Originally published in 1941, this pocket-sized volume preserves the language of diners and roadside restaurants during the '30s and '40s. From "all hot" (baked potato) to "dog soup" (water), the long-lost terms are part fascinating, part funny, and often politically incorrect by today's standards. Historic photos from the Library of Congress add nostalgic appeal.

Hash

Author: Quelle: Wikipedia
Publisher: Books LLC, Wiki Series
ISBN: 9781159040598
Size: 44.64 MB
Format: PDF, Kindle
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Hash. Dieser Inhalt ist eine Zusammensetzung von Artikeln aus der frei verf gbaren Wikipedia-Enzyklop die. Seiten: 39. Nicht dargestellt. Kapitel: Message-Digest Algorithm 5, Hashfunktion, Zyklische Redundanzpr fung, Kryptologische Hashfunktion, Hashtabelle, Secure Hash Algorithm, Brent-Hashing, Multiplikative Methode, Verteilte Hashtabelle, Bloomfilter, Hash-Baum, LM-Hash, Kuckucks-Hashing, Preimage-Angriff, Kollisionsangriff, Doppel-Hashing, Perfekte Hash-Funktion, Zufallsorakel, Bcrypt, Divisionsrestmethode, FNV, Mittquadratmethode, UUHash, Message-Digest Algorithm 4, Message-Digest Algorithm 2, RIPEMD-160, SHA-1 Collision Search Graz, HAVAL, Merkles Meta-Verfahren, Skein, Tiger-Tree Hash, Universelle Hash-Funktion, Konsistente Hash-Funktion, SHA-3, Whirlpool, Snefru, Gr stl. Auszug: Die zyklische Redundanzpr fung (engl. cyclic redundancy check, daher meist CRC) ist ein Verfahren zur Bestimmung eines Pr fwerts f r Daten, um Fehler bei der bertragung oder Speicherung erkennen zu k nnen. F r jeden Datenblock wird nach einem bestimmten Verfahren ein sogenannter CRC-Wert berechnet, der dem Datenblock angef gt wird. Zur berpr fung der Daten wird dasselbe Berechnungsverfahren auf den Datenblock einschlie lich des angef gten CRC-Werts angewandt. Ist das Ergebnis dann Null, kann angenommen werden, dass der Datenblock unverf lscht ist. Verschiedene technische Anwendungen weichen allerdings von diesem Schema ab, indem sie beispielsweise die Berechnung mit einem bestimmten Wert initialisieren oder den CRC-Wert vor der bermittlung invertieren. CRC ist so ausgelegt, dass Fehler bei der bertragung der Daten, wie sie beispielsweise durch Rauschen auf der Leitung verursacht werden k nnten, mit hoher Wahrscheinlichkeit entdeckt werden. CRCs von seriellen Daten bertragungen k nnen sehr einfach in Hardware realisiert werden. Zum Beispiel werden Daten bertragungen ber Ethernet, sowie die meisten Festplatten- bertragungen mit CRC-Verfahren gepr ft. Das CRC-Verfahren ist nur f r di...

Sas Hash Object Programming Made Easy

Author: Michele M. Burlew
Publisher: SAS Institute
ISBN: 1612900984
Size: 58.39 MB
Format: PDF, ePub, Mobi
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Sas Hash Object Programming Made Easy. Hash objects, an efficient look-up tool in the SAS DATA step, are object-oriented programming structures that function differently from traditional SAS language statements. Michele Burlew's SAS Hash Object Programming Made Easy shows readers how to use these powerful features, which they can program to quickly look up and manage data and to conserve computing resources. SAS provides various look-up techniques, and hash objects are among the newest, so therefore many users may not have yet used them. Because the examples presented vary in complexity, SAS Hash Object Programming Made Easy is useful to SAS users of all experience levels, from novice programmer to advanced programmer. Novice programmers can adapt some of the simpler hash programming techniques as they develop their SAS programming skills. This book helps more experienced programmers learn how to take advantage of hash object programming by comparing traditional processing techniques to those that use hash objects. Additionally, users from diverse fields with different requirements can adapt the examples in SAS Hash Object Programming Made Easy to fit their unique situations. This book is part of the SAS Press program.

Pattaya Hash

Author: Avram Mednick
Publisher: iUniverse
ISBN: 9781450277532
Size: 72.61 MB
Format: PDF, Kindle
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Pattaya Hash. This book, which takes place in the present, is about a family dealing with the challenges of modern life. Beyond that, however, it is a commentary about different ways, some healthy, some not, that people are choosing to network in the 21st century.

Popular Mobilization And Empowerment In Georgia S Rose Revolution

Author: Kelli Hash-Gonzalez
Publisher: Rowman & Littlefield
ISBN: 0739173545
Size: 63.56 MB
Format: PDF, Mobi
View: 1937

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Popular Mobilization And Empowerment In Georgia S Rose Revolution. While other studies explain the Rose Revolution in terms of the contribution of the “power players,” Popular Mobilization and Empowerment in Georgia's Rose Revolution, by Kelli Hash-Gonzalez, adds to our understanding by examining the revolution from the perspective of ordinary citizens. This in-depth study shows how the movement frames targeted people's emotions, as well as their beliefs and values to more effectively mobilize a critical mass. This achievement was surprising, given the hopelessness, cynicism, and alienation in the region's political culture.

Hash

Author: Wensley Clarkson
Publisher: Hachette UK
ISBN: 1782061983
Size: 13.97 MB
Format: PDF, ePub
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Hash. For millions of people across the world, lighting up a joint is no more controversial than having a cup of tea. But in Hash Wensley Clarkson explores the dark and sinister side of this multi-billion pound business: one fuelled by a brutal underworld network of dealers, drug barons, bent cops and even terrorists. Sex, intimidation, bribery and murder are all employed in a quest for vast profits. Travelling from the lawless Rif mountains in Morocco to darkened warehouses in Spain, protected by heavily armed gangsters, this is a revelatory roller-coaster ride through the secret world of Hash.