Blowfish Cryptography In Practice
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Blowfish Cryptography In Practice
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-06-25
Blowfish Cryptography In Practice written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-25 with Computers categories.
"Blowfish Cryptography in Practice" "Blowfish Cryptography in Practice" offers a thorough and modern exposition of the Blowfish symmetric cipher, guiding readers from foundational cryptographic theory to advanced implementation and migration strategies. The book opens by contextualizing Blowfish against the backdrop of 1990s cryptographic challenges and the limitations of legacy standards such as DES, before dissecting its internal mechanisms—Feistel structure, S-box generation, and key schedule—with meticulous clarity. Readers gain both historical perspective and technical grounding, understanding why Blowfish was developed and how it fits within the evolving cryptographic landscape alongside peers such as 3DES, IDEA, and AES. As the narrative proceeds, the text delves deeply into the mechanics of Blowfish, with dedicated chapters exploring its encryption and decryption processes, resistance to various cryptanalytic attacks, and rigorous analysis of both key schedule vulnerabilities and side-channel threats. Implementation guidance is pragmatic and exacting: best practices for secure memory management, constant-time programming, error handling, and platform-specific nuances equip readers to deploy Blowfish safely in software and hardware contexts. Richly detailed sections address secure API choices, hardware acceleration, and the particular challenges presented by embedded, resource-constrained environments. The book culminates with a forward-looking evaluation of Blowfish’s legacy, including comparative analyses with modern ciphers, deprecation rationale, and clear roadmaps for migrating to more advanced algorithms in the age of post-quantum threats. Comprehensive reference materials, annotated resource lists, and standardized test suites make this volume not only an expert-level technical guide, but also an indispensable reference. Whether for cryptography professionals, systems engineers, or advanced students, "Blowfish Cryptography in Practice" distills complex theory and real-world wisdom into a coherent, actionable handbook for securing data in a changing digital world.
Cryptography And Cybersecurity
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Author : Ramesh Pandharinath Daund, Dr. Adiline Macriga. G, Mr.Mylavarapu Kalyan Ram, Dr. Amit Chauhan
language : en
Publisher: RK Publication
Release Date : 2025-04-26
Cryptography And Cybersecurity written by Ramesh Pandharinath Daund, Dr. Adiline Macriga. G, Mr.Mylavarapu Kalyan Ram, Dr. Amit Chauhan and has been published by RK Publication this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-04-26 with Computers categories.
This book explores the principles of cryptography and its crucial role in cybersecurity. Covering classical and modern encryption methods, it delves into authentication, digital signatures, and network security. Ideal for students and professionals, it combines theory with practical applications to safeguard data in today's increasingly digital and connected world.
The Twofish Encryption Algorithm
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Author : Bruce Schneier
language : en
Publisher: John Wiley & Sons
Release Date : 1999-04-05
The Twofish Encryption Algorithm written by Bruce Schneier and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-04-05 with Computers categories.
The first and only guide to one of today's most important new cryptography algorithms The Twofish Encryption Algorithm A symmetric block cipher that accepts keys of any length, up to 256 bits, Twofish is among the new encryption algorithms being considered by the National Institute of Science and Technology (NIST) as a replacement for the DES algorithm. Highly secure and flexible, Twofish works extremely well with large microprocessors, 8-bit smart card microprocessors, and dedicated hardware. Now from the team who developed Twofish, this book provides you with your first detailed look at: * All aspects of Twofish's design and anatomy * Twofish performance and testing results * Step-by-step instructions on how to use it in your systems * Complete source code, in C, for implementing Twofish On the companion Web site you'll find: * A direct link to Counterpane Systems for updates on Twofish * A link to the National Institute of Science and Technology (NIST) for ongoing information about the competing technologies being considered for the Advanced Encryption Standard (AES) for the next millennium For updates on Twofish and the AES process, visit these sites: * www.wiley.com/compbooks/schneier * www.counterpane.com * www.nist.gov/aes Wiley Computer Publishing Timely.Practical.Reliable Visit our Web site at www.wiley.com/compbooks/ Visit the companion Web site at www.wiley.com/compbooks/schneier
Emerging Trends In Computing And Expert Technology
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Author : D. Jude Hemanth
language : en
Publisher: Springer Nature
Release Date : 2019-11-07
Emerging Trends In Computing And Expert Technology written by D. Jude Hemanth and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-07 with Computers categories.
This book presents high-quality research papers that demonstrate how emerging technologies in the field of intelligent systems can be used to effectively meet global needs. The respective papers highlight a wealth of innovations and experimental results, while also addressing proven IT governance, standards and practices, and new designs and tools that facilitate rapid information flows to the user. The book is divided into five major sections, namely: “Advances in High Performance Computing”, “Advances in Machine and Deep Learning”, “Advances in Networking and Communication”, “Advances in Circuits and Systems in Computing” and “Advances in Control and Soft Computing”.
Applications And Techniques In Information Security
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Author : Srikanth Prabhu
language : en
Publisher: Springer Nature
Release Date : 2023-05-11
Applications And Techniques In Information Security written by Srikanth Prabhu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-05-11 with Computers categories.
This book constitutes the refereed proceedings of the 13th International Conference, on Applications and Techniques in Information Security, ATIS 2022, held in Manipal, India, December 30–31, 2022. The 23 full papers included in this book were carefully reviewed and selected from 121 submissions. They were organized in topical sections as follows: Privacy and Security, Advances in Machine Learning, Cloud, IoT and Computing Technologies.
Scrypt Cryptography
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Author : Fouad Sabry
language : en
Publisher: One Billion Knowledgeable
Release Date : 2025-06-26
Scrypt Cryptography written by Fouad Sabry and has been published by One Billion Knowledgeable this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-26 with Business & Economics categories.
Unlock the secrets behind one of the most influential cryptographic algorithms in the world of cryptocurrencies—Scrypt. As part of the "Litecoin Cryptocurrency" series, this book delves into the critical components that have shaped the cryptographic landscape and empowered the rise of cryptocurrencies. Whether you're a professional, an enthusiast, a graduate student, or just someone curious about cryptography, this book provides essential knowledge to enhance your understanding of Scrypt and its applications. Chapters Brief Overview: 1: Scrypt: The foundation of Litecoin’s proofofwork algorithm, focusing on its memoryhard design. 2: Password cracking: Explores techniques for breaching encrypted passwords and how Scrypt resists them. 3: Key derivation function: Investigates methods for securely generating cryptographic keys from passwords. 4: Rainbow table: Discusses the attack method Scrypt guards against, ensuring password security. 5: Adler32: Introduces the checksum function and its role in data integrity and cryptographic security. 6: Dictionary attack: Explains how attackers use precompiled word lists to break weak passwords. 7: Microsoft Office password protection: Details how Scrypt can strengthen password security against common attacks. 8: HMAC: A method used to verify the integrity and authenticity of a message, strengthening Scrypt's security. 9: Pepper (cryptography): Describes the role of peppering passwords to enhance security in hashing algorithms. 10: Blowfish (cipher): A symmetric encryption algorithm analyzed in relation to Scrypt’s security mechanisms. 11: Salted Challenge Response Authentication Mechanism: Explores how salting adds another layer of security to Scrypt. 12: Master Password (algorithm): A discussion of secure password algorithms that relate to Scrypt’s robustness. 13: Bcrypt: Introduces another hashing algorithm and compares it with Scrypt in terms of security. 14: PBKDF2: An indepth look at a key derivation function and how Scrypt’s memoryhard properties compare. 15: Lyra2: A modern algorithm used in cryptocurrency mining, compared to Scrypt in computational efficiency. 16: Cryptographic hash function: A broad overview of cryptographic hash functions and Scrypt’s contribution to the field. 17: Proof of work: Explains the concept of proof of work, where Scrypt plays a critical role in Litecoin mining. 18: BLAKE (hash function): A newer cryptographic hash function and its application within secure algorithms like Scrypt. 19: Key stretching: A method to increase the computational effort needed to break encryption, central to Scrypt’s function. 20: Crypt (C): A lightweight encryption algorithm and its relationship to memoryhard functions like Scrypt. 21: Argon2: A cuttingedge hashing algorithm and its comparison to Scrypt in resisting attacks. This book is more than just an exploration of Scrypt; it’s a gateway to understanding how cryptographic algorithms drive the security behind cryptocurrencies like Litecoin. With cuttingedge details, it promises to educate and arm readers with the knowledge to thrive in the evolving world of digital currencies. Professionals, students, and enthusiasts will find immense value in this concise yet comprehensive guide.
Symmetric Key Cryptography With Python And Tkinter
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Author : Vivian Siahaan
language : en
Publisher: BALIGE PUBLISHING
Release Date : 2024-08-24
Symmetric Key Cryptography With Python And Tkinter written by Vivian Siahaan and has been published by BALIGE PUBLISHING this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-24 with Computers categories.
In the evolving landscape of data security, encryption algorithms play a crucial role in safeguarding sensitive information. This book delves into several prominent encryption algorithms, including AES, DES, 3DES, Blowfish, and CAST. Each algorithm offers unique strengths and is suitable for different use cases. Advanced Encryption Standard (AES) stands out for its robust security and efficiency, making it a preferred choice for many modern applications. Data Encryption Standard (DES), while historically significant, has largely been replaced by Triple DES (3DES), which enhances DES's security by applying it multiple times. Blowfish, a versatile and fast cipher, and CAST, known for its flexibility in key lengths, are also explored for their practical applications in various security scenarios. To provide a hands-on approach, this book includes detailed Python examples and Tkinter-based graphical user interfaces for each encryption algorithm. These practical examples illustrate how to implement these ciphers in real-world applications, from basic encryption and decryption processes to more complex use cases involving secure data handling and user interaction. Through these examples, readers will gain a comprehensive understanding of both the theoretical and practical aspects of encryption, empowering them to implement secure solutions tailored to their specific needs. In chapter two, we discussed the development of a Tkinter-based GUI application for AES encryption and decryption of synthetic data. The application consists of multiple tabs: one for displaying original data, one for showing encrypted data, another for decrypted data, and a fourth for entering and managing passwords. Key functionalities include generating a synthetic dataset with various attributes like UserID, Name, and Email, encrypting and decrypting this data using AES encryption in GCM mode, and displaying the results in a ttk.Treeview. The application also features password management, allowing users to set a password, generate an encryption key from it, and update the displays accordingly. The code includes several methods for data encryption and decryption, key derivation, and DataFrame management. The generate_data_intelligence_dataset method creates synthetic data, while encrypt_data and decrypt_data methods handle AES encryption and decryption. The update_displays method updates the DataFrame with encrypted and decrypted data and saves these to Excel files. The display_dataframe method dynamically displays DataFrames in the Tkinter GUI, with alternating row colors for better readability. This session detailed how each part of the code contributes to creating a rich and interactive application for handling encrypted data. In chapter three, we explored a detailed Tkinter application designed for managing and visualizing Bitcoin transaction data. The application generates synthetic data including wallet addresses, transaction types, dates, Bitcoin amounts, and their USD equivalents. Users enter an 8-byte DES key to encrypt Bitcoin amounts using DES encryption. The encrypted data is displayed in a tab within the Tkinter GUI, and users can view a histogram showing the distribution of Bitcoin amounts, both before and after encryption. The application leverages various Python libraries: tkinter for the GUI, pandas for data manipulation, Crypto.Cipher.DES for encryption, and matplotlib for plotting. Key functions include generating synthetic Bitcoin data, encrypting data with DES, and visualizing data distributions. The GUI is structured with tabs for entering the password, viewing original and encrypted data, and displaying distribution graphs. The session detailed how each function works, from generating Bitcoin addresses and transaction data to encrypting and decrypting data and plotting results. In chapter four, we discussed a Python code that integrates a Tkinter GUI with Triple DES (3DES) encryption and SQLite database management. The code encompasses the setup of an SQLite database, encryption and decryption of transaction data using 3DES, and functions for saving and retrieving encrypted transaction records. Key functions include generating a 3DES key, encrypting and decrypting data with appropriate padding, and handling database operations with retry logic to manage potential locking issues. We explored the database setup with table creation, and transaction management, and incorporated robust error handling to ensure reliable operation. The GUI implementation leverages Tkinter for user interaction and display, including functions to generate 3DES keys, handle encryption/decryption operations, and manage transaction records in an SQLite database. The session covered detailed explanations of how each part of the code operates, from database setup and key generation to data encryption/decryption and transaction storage. This comprehensive approach ensures secure handling of sensitive data and integrates encryption functionalities within a user-friendly interface, demonstrating practical applications of cryptographic techniques in a real-world scenario. In chapter five, we detailed a Python script using Tkinter for a secure cloud storage application leveraging Blowfish encryption. The script includes several core functionalities: user authentication, file upload and download, and cryptographic operations. Key aspects include helper functions for generating and verifying HMACs, as well as Blowfish encryption and decryption. The GUI is organized into tabs for user login/register, file upload, file download, and logs. Functions are defined to handle file selection, encryption, upload, HMAC generation, and downloading, ensuring that data integrity is maintained through HMAC verification and secure file handling. The Tkinter-based GUI is designed to provide a user-friendly interface for interacting with the secure cloud storage system. The SecureCloudStorageApp class initializes and configures the GUI with tabs for different functionalities. It manages user login, registration, file selection, and storage operations. The application supports encryption and decryption of files, storing encrypted data and HMACs, and provides feedback through a log and message boxes. This setup ensures secure data handling and user management, integrating cryptographic functions seamlessly into a functional application interface. In chapter six, we discussed and refined a Python script for managing file encryption and decryption using the CAST cipher, implemented with a Tkinter graphical user interface (GUI). The script includes functions for generating encryption keys, encrypting and decrypting files, and handling file uploads and downloads. It also features user authentication and registration mechanisms, utilizing bcrypt for password hashing and checking. The GUI allows users to perform these actions through a series of buttons and input fields, with status updates and error messages displayed in a scrollable text area. We further improved the script by adding error handling for file operations and ensuring proper file path management. Enhancements included better user feedback through message boxes for errors related to file reading, JSON decoding, and user actions. These improvements aimed to make the application more robust and user-friendly, ensuring reliable file management and secure encryption practices. The final version also addressed exceptions and edge cases to enhance the overall reliability and functionality of the Tkinter-based application.
New Frontiers In Cryptography
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Author : Khaled Salah Mohamed
language : en
Publisher: Springer Nature
Release Date : 2020-10-16
New Frontiers In Cryptography written by Khaled Salah Mohamed and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-16 with Technology & Engineering categories.
This book provides comprehensive coverage of various Cryptography topics, while highlighting the most recent trends such as quantum, blockchain, lightweight, Chaotic and DNA cryptography. Moreover, this book covers cryptography primitives and its usage and applications and focuses on the fundamental principles of modern cryptography such as Stream Ciphers, block ciphers, public key algorithms and digital signatures. Readers will gain a solid foundation in cryptography and security. This book presents the fundamental mathematical concepts of cryptography. Moreover, this book presents hiding data techniques such as steganography and watermarking. The author also provides a comparative study of the different cryptographic methods, which can be used to solve security problems.
Applied Cryptography
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Author : Bruce Schneier
language : en
Publisher: John Wiley & Sons
Release Date : 2017-05-25
Applied Cryptography written by Bruce Schneier and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-25 with Computers categories.
From the world's most renowned security technologist, Bruce Schneier, this 20th Anniversary Edition is the most definitive reference on cryptography ever published and is the seminal work on cryptography. Cryptographic techniques have applications far beyond the obvious uses of encoding and decoding information. For developers who need to know about capabilities, such as digital signatures, that depend on cryptographic techniques, there's no better overview than Applied Cryptography, the definitive book on the subject. Bruce Schneier covers general classes of cryptographic protocols and then specific techniques, detailing the inner workings of real-world cryptographic algorithms including the Data Encryption Standard and RSA public-key cryptosystems. The book includes source-code listings and extensive advice on the practical aspects of cryptography implementation, such as the importance of generating truly random numbers and of keeping keys secure. ". . .the best introduction to cryptography I've ever seen. . . .The book the National Security Agency wanted never to be published. . . ." -Wired Magazine ". . .monumental . . . fascinating . . . comprehensive . . . the definitive work on cryptography for computer programmers . . ." -Dr. Dobb's Journal ". . .easily ranks as one of the most authoritative in its field." -PC Magazine The book details how programmers and electronic communications professionals can use cryptography-the technique of enciphering and deciphering messages-to maintain the privacy of computer data. It describes dozens of cryptography algorithms, gives practical advice on how to implement them into cryptographic software, and shows how they can be used to solve security problems. The book shows programmers who design computer applications, networks, and storage systems how they can build security into their software and systems. With a new Introduction by the author, this premium edition will be a keepsake for all those committed to computer and cyber security.
Essential Cybersecurity Science
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Author : Josiah Dykstra
language : en
Publisher: "O'Reilly Media, Inc."
Release Date : 2015-12-08
Essential Cybersecurity Science written by Josiah Dykstra and has been published by "O'Reilly Media, Inc." this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-08 with Computers categories.
If you’re involved in cybersecurity as a software developer, forensic investigator, or network administrator, this practical guide shows you how to apply the scientific method when assessing techniques for protecting your information systems. You’ll learn how to conduct scientific experiments on everyday tools and procedures, whether you’re evaluating corporate security systems, testing your own security product, or looking for bugs in a mobile game. Once author Josiah Dykstra gets you up to speed on the scientific method, he helps you focus on standalone, domain-specific topics, such as cryptography, malware analysis, and system security engineering. The latter chapters include practical case studies that demonstrate how to use available tools to conduct domain-specific scientific experiments. Learn the steps necessary to conduct scientific experiments in cybersecurity Explore fuzzing to test how your software handles various inputs Measure the performance of the Snort intrusion detection system Locate malicious “needles in a haystack” in your network and IT environment Evaluate cryptography design and application in IoT products Conduct an experiment to identify relationships between similar malware binaries Understand system-level security requirements for enterprise networks and web services