This book is aimed provides awareness of methods used for functional encryption in the academic and professional communities. The book covers functional encryption algorithms and its modern applications in developing secure systems, viz. entity authentication, message authentication, software security, cyber security, hardware security, Internet of Thing (IoT), cloud security, smart card technology, CAPTCHA, digital signature and digital watermarking. This book is organized into fifteen chapters, i.e. Foundations of functional encryption, Impact of Group Theory in Cryptosystem, Elliptic Curve Cryptography, Hyper Elliptic Curve Cryptography (HECC), XTR algorithm: Efficient and Compact Subgroup Trace Representation, Pairing based Cryptography, NTRU Algorithm: Nth Degree Truncated Polynomial Ring Units, Cocks IBE scheme, Boneh-Franklin IBE, Boneh-Boyen IBE, Sakai-Kasahara IBE, Hierarchical Identity Based Encryption, Attribute based Encryption, Extensions of IBE and Related Primitives, and Digital Signatures . weiterlesen