The Architecture of Cryptographic Hashes
Overview
The Architecture of Cryptographic Hashes: Understanding, Designing, and Building Hash Functions from First Principles is a book written by Ayush Anand. It focuses on cryptographic hash functions, explaining their underlying concepts, design principles, construction, and practical implementation.
The book introduces the fundamental properties of cryptographic hash functions and discusses concepts such as preimage resistance, collision resistance, the avalanche effect, message processing, and compression functions. It also explores how hash functions can be designed from first principles and examines the components and techniques used in their construction.
The book includes a discussion of the development of the Rudra hash function and describes the author's process of designing and implementing a cryptographic hash function. It is intended to provide an accessible introduction to the architecture and development of cryptographic hash functions while also discussing practical considerations involved in implementing them.
The book was published by Notion Press on 8 September 2026.
Background
The book was written with the aim of explaining cryptographic hash functions from their basic principles to their practical construction. The idea developed from the author's interest in cryptography and in understanding how hash functions work internally rather than treating them only as ready-made algorithms.
The book explores the architecture of cryptographic hash functions and the different components involved in their design. It also discusses how concepts from cryptography, mathematics, and computer science can be combined to construct and evaluate hash functions.
The development of the book was accompanied by the author's work on Rudra, a cryptographic hash function developed as a practical exploration of hash-function design. This work provided a basis for discussing the process of designing, implementing, testing, and analyzing a hash function.
Development
The book was developed from the author's work and study of cryptographic hash functions. Its development involved researching existing hash-function designs and exploring the process of designing and implementing a hash function. The development of Rudra also contributed to the material presented in the book.
Publication
The Architecture of Cryptographic Hashes was published by Notion Press on 8 September 2026. The book was released in hardcover/paperback format.
See also
- Cryptographic hash function
- Hash function
- Cryptography
- MD5
- SHA-1
- SHA-2
- SHA-3
- BLAKE (hash function)
- Keccak
Fleinvær is an island group in Gildeskål municipality in Norway, approximately southwest of Bodø. The island group consists of countless low islands, islets, and skerries. It is said that Fleinvær has as many islands as there are days in a year.
Ågerøya is an island in the middle of the Blindleia strait in Lillesand Municipality in Agder county, Norway. The island is located off Kjøpmannsvik, between the islands of Justøya to the east and Furøya to the west. Ågerøya attracts many summer tourists, and the population multiplies during the summer months. The island is car-free. The village of Ågerøyhavn has a harbour for the island.
Kevin Buchanan is an American former district attorney for Washington County and Nowata County, Oklahoma from Bartlesville and an Oklahoma Pardon and Parole Board member appointed by Governor Kevin Stitt on August 3, 2023. His term on the board will expire in January 2027.
He held his role of district attorney for over a decade. Before that, he was a defense attorney.
Oklahoma Pardon and Parole Board
In July 2023, Cathy Stoker resigned from the board saying that her role was not a "good fit" and Kevin Buchanan was appointed by Governor Stitt to replace her.
Buchanan comes to the Pardon and Parole Board when it is "currently the target of a lawsuit brought by death-row inmate Richard Glossip after he was denied a clemency recommendation." Oklahoma State Representative Kevin McDugle said that he would like to see the pardon and parole board "have seven members instead of five and he’s going to work during the next legislative session" toward that goal.
District Attorney
He has criticized the McGirt v. Oklahoma decision.