Blockchain Cryptography

BLOCKCHAIN CRYPTOGRAPHY

VOLUME I
Cryptographic Foundations, Java, Bitcoin, Ethereum & DeFi

Blockchain Cryptography explores the cryptographic foundations of modern blockchain systems, from mathematical principles and cryptographic algorithms to their practical implementation in Java and their application in Bitcoin, Ethereum, and decentralized finance.

Combining theoretical rigor with hands-on programming, this volume examines how cryptographic mechanisms work, how they are implemented, and how they contribute to the security of decentralized systems.

The first part establishes the essential foundations: the relationship between cryptography and blockchain, mathematical concepts, hash functions, public-key cryptography, and elliptic curves.

It develops the principles behind the mechanisms that secure digital assets and blockchain transactions, providing the conceptual tools needed to understand the protocols examined throughout the book.

Theory is connected to practice through Java implementations based on the Java Cryptography Architecture (JCA) and Java Cryptography Extension (JCE).

The volume explores hashing, Merkle trees, cryptographic keys, digital signatures, elliptic-curve operations, and crypto wallets. Implementations illustrate how cryptographic primitives are used in software and how their properties translate into practical security mechanisms.

The Bitcoin section examines the architecture of the network, transaction structures, scripts, Proof of Work, consensus security, and the cryptographic mechanisms underlying the protocol.

It explains how hashing, digital signatures, transaction validation, and consensus work together to enable a decentralized system without relying on a central authority.

The Ethereum section explores its architecture, smart contracts, digital signatures, Merkle structures, and Proof of Stake.

It examines the cryptographic mechanisms that support programmable blockchain systems, from transaction authentication to data structures and consensus.

The final part applies these concepts to decentralized finance. It covers automated market makers (AMMs), lending and borrowing, stablecoins, oracles, and MEV and intents.

These chapters examine the mechanisms that enable decentralized financial applications and the technical challenges involved in securing interactions between protocols, assets, and smart contracts.

Throughout the volume, the emphasis is on understanding the mechanisms rather than simply using them. Mathematical foundations, cryptographic principles, Java implementations, and real-world protocol architectures are brought together to explain how blockchain systems operate and where their security comes from.

Written by the author of Crypto Market: Predicting the Unpredictable, this technical reference is intended for software engineers, developers, and technically minded readers who want to build a rigorous understanding of cryptography and its role in Bitcoin, Ethereum, and DeFi.