Cryptanalysis of Number Theoretic Ciphers

"This book contains a nice introduction to modern cryptography, with emphasis laid on the ciphers based on computational number theory. ... The reader learns to deal with large numbers in a computer and to analyze the complexity of the most basic algorithms. ... [T]he reader is not just confronted with a list of algorithms, but he/she is given the clues to assimilate the ideas behind the results ... . The book contains more than 200 interesting exercises that test the reader's understanding of the text."
- Zentralblatt MATH, 1045

"The book provides an excellent text concerning cryptanalysis. ... masterly and carefully written. As the proofs are given with full details ... I can recommend it also to students."
- Monatshefte fur Mathematik