Ten Modern Cryptographic Algorithms is a clear, algorithm-first introduction to the ten landmark cryptographic primitives that underpin modern secure communication. Instead of starting with abstract number theory, each chapter centers on a single algorithm, explaining how it works, where it is used in real systems, what its strengths and weaknesses are, and how it evolved in response to new attacks and requirements. Blending mathematical clarity, historical context, and practical examples, the book shows how these algorithms protect data in the real world-from web traffic and stored credentials to VPNs and messaging systems. Designed for cybersecurity students and working professionals, it offers accessible but meaningful coverage that helps readers understand not just the formulas, but the design decisions and tradeoffs behind modern cryptography.