A Classical Introduction to Cryptography: Applications for Communications Security

From the reviews:

"This impressive hardback introduces fundamentals of information and communications security by providing mathematical concepts to prove or break the security of cryptographic schemes. ... The book is designed for upper-level undergraduates and graduate level students in computer science. This comprehensive volume is also suitable for researchers and practitioners in industry." (Cryptologia, Vol. 30, 2006)

"This book presents, using a chronological order, both conventional cryptography and public-key cryptography, as well as the two sides of cryptanalysis: adversary modelling and proof reduction. ... This advanced-level textbook is recommended for those interested in cryptography and its applications: students, researchers, computer scientists, mathematicians, engineers, and practitioners in industry." (Michael M. Dediu, Mathematical Reviews, Issue 2007 b)