Cryptography in Java

Cryptography in Java is a practical, hands-on guide for Java developers who want to understand and implement modern cryptography correctly and securely.
This book explains cryptographic concepts in clear, simple language and shows how to apply them using Java's built-in security APIs . You'll learn how encryption, hashing, digital signatures, and secure communication actually work-without heavy mathematics or theory overload.
Designed for beginners to intermediate Java developers , the book focuses on real-world use cases , secure coding practices, and common mistakes developers make when handling sensitive data.
What you'll learn in this book:Core cryptography concepts explained clearlySymmetric encryption using AES with secure modesAsymmetric encryption using RSASecure password storage using hashing, salting, and PBKDF2Digital signatures and message verificationJava Cryptography Architecture (JCA) and JCEKey management using Java KeyStoreCertificates, PKI, and TLS basicsCryptography best practices and common pitfallsPractical examples with complete Java code
All examples are written using modern, secure defaults and are compatible with Java 8 and above .
Whether you're building backend systems, APIs, desktop applications, or Android apps, this book will help you protect data, authenticate users, and design secure Java applications with confidence .

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