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Author: Friedrich L. Bauer
Publisher: Springer Science & Business Media
ISBN: 3540481214
Category : Computers
Languages : en
Pages : 555
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Book Description
In today's extensively wired world, cryptology is vital for guarding communication channels, databases, and software from intruders. Increased processing and communications speed, rapidly broadening access and multiplying storage capacity tend to make systems less secure over time, and security becomes a race against the relentless creativity of the unscrupulous. The revised and extended third edition of this classic reference work on cryptology offers a wealth of new technical and biographical details. The book presupposes only elementary mathematical knowledge. Spiced with exciting, amusing, and sometimes personal accounts from the history of cryptology, it will interest general a broad readership.
Author: Friedrich L. Bauer
Publisher: Springer Science & Business Media
ISBN: 3540481214
Category : Computers
Languages : en
Pages : 555
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Book Description
In today's extensively wired world, cryptology is vital for guarding communication channels, databases, and software from intruders. Increased processing and communications speed, rapidly broadening access and multiplying storage capacity tend to make systems less secure over time, and security becomes a race against the relentless creativity of the unscrupulous. The revised and extended third edition of this classic reference work on cryptology offers a wealth of new technical and biographical details. The book presupposes only elementary mathematical knowledge. Spiced with exciting, amusing, and sometimes personal accounts from the history of cryptology, it will interest general a broad readership.
Author: Jake Ryan
Publisher: John Wiley & Sons
ISBN: 1394178530
Category : Business & Economics
Languages : en
Pages : 311
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Book Description
Break through your "crypto curiosity" and uncover why blockchain innovation will revolutionize our economy, culture, and the future of investing—as well as how to navigate it safely. Between the booms, crashes, jargon, and flashy memes, blockchain technology and digital assets have not been easy for ordinary investors to understand. Hopeful investors in blockchain, digital assets, and crypto everywhere have a lengthy list of questions—and the list keeps getting longer and more nuanced. But who do they turn to for answers? In Crypto Decrypted, Tradecraft Capital’s Jake Ryan and James Diorio decrypt a new world that is hidden in plain view, accessible currently to folks “in the know.” This book is for anyone who finds themselves lost in the blockchain babble, exploring and explaining not only how to participate, but the often overlooked reasons why this new technology is relevant to every human being. Ryan and Diorio dive in deeply, debunking common myths, clarifying major breakthroughs that are often disregarded, and providing easy-to-understand answers for both crypto newbies and blockchain enthusiasts, so they can move beyond the short-term to explore what great opportunities lie ahead for blockchain technologies while providing approaches to investing more safely and soundly so that you too can profit from this technological revolution. You will learn: The basics of blockchain technology, which will allow you to better navigate this new world. The truth that debunks the six most common myths about crypto and blockchain. What the Byzantine Generals’ Problem is, why it is important, and how it will impact your future. Why blockchain technology is so important and how it is relevant to you—yes, you! The ways in which blockchain innovation will transform our financial systems, our economy, and society itself. How to participate in lower risk approaches in investing in digital assets to diversify your retirement portfolio. Why the Information Age is over and that we’ve already begun a new long-wave economic cycle, the Age of Autonomy® , what the Autonomous Economy will look like in the coming years, and how it will impact us. Just as the internet revolutionized our world decades ago, blockchain technology will impact every person and businesses on the planet– for the better – in the decades to come.
Author: Friedrich Ludwig Bauer
Publisher: Springer Science & Business Media
ISBN: 9783540426745
Category : Computer security
Languages : en
Pages : 512
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Book Description
In today's unsafe and increasingly wired world cryptology plays a vital role in protecting communication channels, databases, and software from unwanted intruders. This revised and extended third edition of the classic reference work on cryptology now contains many new technical and biographical details. The first part treats secret codes and their uses - cryptography. The second part deals with the process of covertly decrypting a secret code - cryptanalysis, where particular advice on assessing methods is given. The book presupposes only elementary mathematical knowledge. Spiced with a wealth of exciting, amusing, and sometimes personal stories from the history of cryptology, it will also interest general readers.
Author: F.L. Bauer
Publisher: Springer Science & Business Media
ISBN: 3662034522
Category : Computers
Languages : en
Pages : 478
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Book Description
Cryptology, for millennia a "secret science", is rapidly gaining in practical importance for the protection of communication channels, databases, and software. Beside its role in computerized information systems, cryptology is finding more and more applications inside computer systems and networks, extending to access rights and source file protection. The first part of this book treats secret codes and their uses - cryptography - before moving on to the process of covertly decrypting a secret code - cryptanalysis. Spiced with a wealth of exciting, amusing, and occasionally personal stories from the history of cryptology, and presupposing only elementary mathematical knowledge, this book will also stimulate general readers.
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309471567
Category : Computers
Languages : en
Pages : 119
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Book Description
Encryption protects information stored on smartphones, laptops, and other devices - in some cases by default. Encrypted communications are provided by widely used computing devices and services - such as smartphones, laptops, and messaging applications - that are used by hundreds of millions of users. Individuals, organizations, and governments rely on encryption to counter threats from a wide range of actors, including unsophisticated and sophisticated criminals, foreign intelligence agencies, and repressive governments. Encryption on its own does not solve the challenge of providing effective security for data and systems, but it is an important tool. At the same time, encryption is relied on by criminals to avoid investigation and prosecution, including criminals who may unknowingly benefit from default settings as well as those who deliberately use encryption. Thus, encryption complicates law enforcement and intelligence investigations. When communications are encrypted "end-to-end," intercepted messages cannot be understood. When a smartphone is locked and encrypted, the contents cannot be read if the phone is seized by investigators. Decrypting the Encryption Debate reviews how encryption is used, including its applications to cybersecurity; its role in protecting privacy and civil liberties; the needs of law enforcement and the intelligence community for information; technical and policy options for accessing plaintext; and the international landscape. This book describes the context in which decisions about providing authorized government agencies access to the plaintext version of encrypted information would be made and identifies and characterizes possible mechanisms and alternative means of obtaining information.
Author: Vivian Siahaan
Publisher: BALIGE PUBLISHING
ISBN:
Category : Computers
Languages : en
Pages : 238
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Book Description
Unlock the secrets of modern cryptography explored in this book, a comprehensive guide that takes you from the fundamentals to advanced applications in encryption, decryption, and digital signatures. Whether you're a beginner or an experienced developer, this book offers hands-on examples, real-world scenarios, and detailed explanations that make complex concepts accessible and engaging. Dive into the world of RSA, as you learn to build secure systems and protect sensitive information with confidence. Perfect for anyone looking to master the art of cryptography, this book is your key to the future of digital security. In chapter one, we implemented RSA key generation within a Tkinter-based GUI application. This example was designed to be user-friendly, allowing users to generate RSA keys with a simple button click. The process involved generating a private key and a corresponding public key, which were then displayed within a text widget for easy copying and saving. This example demonstrated the ease with which RSA keys can be generated programmatically, making cryptography more accessible to users who may not be familiar with command-line interfaces. In chapter two, we embarked on a journey to create a sophisticated RSA encryption and decryption project. We began by constructing a comprehensive Tkinter-based GUI application that allows users to generate RSA key pairs, create and sign transactions, verify signatures, and securely store transactions. The initial focus was on setting up the graphical user interface, with multiple tabs dedicated to different functionalities, ensuring that the application was both user-friendly and feature-rich. The core functionality of the application revolves around RSA key generation, transaction creation, and digital signing. The RSA keys are generated using the cryptography library, and users can generate private and public keys, which are then displayed in the application. This setup forms the foundation for securely signing transactions. The transaction creation process involves entering details like the sender, receiver, amount, and currency, after which the transaction data is signed using the private key, producing a digital signature. This digital signature ensures the authenticity and integrity of the transaction, preventing any tampering or forgery. Once transactions are signed, they can be stored in a secure manner. The application allows users to save these transactions, along with their digital signatures, in a JSON file, providing a permanent and verifiable record. This storage mechanism is crucial for maintaining the integrity of financial transactions or any sensitive data, as it ensures that each transaction is accompanied by a corresponding signature and public key, enabling later verification. The verification process is another key component of the project. The application retrieves stored transactions and verifies the digital signature against the stored public key. This process ensures that the transaction has not been altered since it was signed, confirming its authenticity. The verification feature is critical in real-world applications, where data integrity and authenticity are paramount, such as in financial systems, legal documents, or secure communications. Throughout the chapter, the project was designed with a strong emphasis on real-world applicability, robustness, and security. The example provided not only serves as a practical guide for implementing RSA encryption and decryption with digital signatures but also highlights the importance of secure key management, transaction integrity, and data authenticity in modern cryptographic applications. This project demonstrates the power of RSA in securing sensitive data and transactions in a user-friendly and accessible way, making it an essential tool for developers working with encryption in real-world scenarios. In chapter three, we some projects focused on RSA digital signatures, delving into the creation of synthetic datasets, key generation, data signing, and verification processes. The project’s primary objective is to demonstrate how RSA digital signatures can be applied in a real-world scenario by securely signing and verifying user data. This example uses a synthetic dataset of user information, including user IDs, names, emails, and registration dates, to illustrate the practical implementation of RSA cryptography. The project begins with generating RSA keys using the generate_rsa_keys function. This function creates a pair of keys: a private key used for signing data and a public key for verifying the signature. These keys are essential for the RSA cryptographic process, where the private key ensures that the data remains authentic and unaltered, while the public key is used to verify the authenticity of the signed data. The keys are serialized into PEM format, a widely-used encoding standard that facilitates the secure storage and transmission of cryptographic keys. Next, a synthetic user dataset is generated using the create_synthetic_user_dataset function. This dataset comprises a specified number of user records, each containing a unique user ID, name, email address, and registration date. The purpose of this synthetic data is to simulate a realistic environment where user information needs to be securely signed and verified. By using a synthetic dataset, we ensure that the example remains versatile and adaptable to various scenarios without relying on actual sensitive information. Once the dataset is generated, the sign_data function is employed to sign each user's data using the RSA private key. This process involves creating a digital signature for each record, ensuring that any alteration to the data after signing would invalidate the signature. The digital signature serves as a cryptographic proof of the data’s integrity and authenticity, providing a robust mechanism to detect tampering or unauthorized modifications. The signatures are then stored alongside the user data for subsequent verification. Finally, the project includes a mechanism for storing the signed data and public key in a JSON file, and a function for retrieving and verifying the data. The store_user_data function saves the user data, corresponding signatures, and the public key to a file, allowing for secure storage and later retrieval. The retrieve_and_verify_user_data function reads the stored data, verifies each signature using the public key, and confirms whether the data remains unaltered. This final step completes the demonstration of how RSA digital signatures can be effectively used to secure user data, making it a comprehensive example for those learning about cryptographic techniques in real-world applications.
Author: H. X. Mel
Publisher: Addison-Wesley Professional
ISBN:
Category : Computers
Languages : en
Pages : 392
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Book Description
A clear, comprehensible, and practical guide to the essentials of computer cryptography, from Caesar's Cipher through modern-day public key. Cryptographic capabilities like detecting imposters and stopping eavesdropping are thoroughly illustrated with easy-to-understand analogies, visuals, and historical sidebars. The student needs little or no background in cryptography to read Cryptography Decrypted. Nor does it require technical or mathematical expertise. But for those with some understanding of the subject, this book is comprehensive enough to solidify knowledge of computer cryptography and challenge those who wish to explore the high-level math appendix.
Author: Jack Cox
Publisher: John Wiley & Sons
ISBN: 111841716X
Category : Computers
Languages : en
Pages : 362
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Book Description
Learn to develop iPhone and iPad applications for networked enterprise environments The iPhone and iPad have made a powerful impact on the business world. Developers creating iOS apps for the enterprise face unique challenges involving networking, system integration, security, and device management. This Wrox guide provides everything you need to know to write iOS apps that integrate with enterprise network resources, providing options for networking iOS devices to enterprise systems and to each other. Offers a complete compendium of methods and techniques for networked communication between iOS applications and other platforms and devices Includes instruction on incorporating synchronous and asynchronous HTTP requests, security, communication issues, and more Covers payload handling, network security, GameKit and Bonjour communications, and low-level network communications Professional iOS Network Programming focuses on the networking aspects of iOS and its relationship to remote data sources, offering a truly unique approach.
Author: Ricardo Sanín-Restrepo
Publisher: Rowman & Littlefield
ISBN: 1786609282
Category : Philosophy
Languages : en
Pages : 374
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Book Description
Decrypting Power aims to reach a unifying concept that allows the connection of the fundamental theses stemming from critical legal studies, Subaltern studies, decolonization, law and society, global political economy, critical geopolitics and theories of de-coloniality. This volume proposes that this concept is the ‘encryption of power’, a category of analysis that reveals the weakness of political liberalism when it takes the place of the legitimate fundament of democracy, as well as its consummate capacity to conceal new mechanisms of global power. The theory of encryption of power understands that there is only a world where difference exists as the fundamental and sole order, but also that such a possibility is heavily obstructed by the concentration of power in forms of oppression. The world hangs on the thread of this entangled reality, made up of difference and its denial, of democracy and its simulations, of truth and its codifications. The decryption of power is then, above all, a theory of justice essential to radical democracy, which comes fully-equipped to prevail over the conditions that deny the possibility of an egalitarian world.
Author: Rafael Martínez-Guerra
Publisher: Springer Nature
ISBN: 3031206983
Category : Computers
Languages : en
Pages : 252
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Book Description
This book offers an alternative for encrypting and decrypting messages using objects called integer and fractional-order estimators or observers, by means of security codes. The authors first establish the class of observers capable of carrying out this work. Then, the type of observers to treat either the integer or fractional order type and their main characteristics is mentioned. The book also presents an essential property of some systems such as Liouville, which is vital for the encryption and decryption of messages in integer and fractional order nonlinear systems by using the synchronization property of chaotic systems. Finally, it addresses some logistic maps such as Mandelbrot sets including Julia and fractal sets, taking advantage of their characteristics to encrypt or recover messages.