// Comparison

Exercices et problèmes de cryptographie vs Understanding Cryptography: Which Should You Read?

Two cybersecurity books on Cryptography, compared honestly: who each is for, what each does best, and which to read first.

Advanced

3/52023

Exercices et problèmes de cryptographie

Damien Vergnaud

A rigorous problem book for learning cryptography — over 150 corrected exercises with course summaries, for L3/master/engineering students — by a French academic cryptographer.

Intermediate

4/52010

Understanding Cryptography

A Textbook for Students and Practitioners

Christof Paar, Jan Pelzl

A genuinely teachable intro to modern cryptography that derives the math instead of hand-waving it, covering symmetric and public-key primitives without drowning you in proofs.

Read this if

Students and self-learners who want to actually practise cryptographic mathematics: corrected exercises on symmetric, public-key and (in recent editions) post-quantum primitives. Preface by Jacques Stern.

Engineers and students who want to actually understand AES, RSA, and ECC rather than just call a library, and who learn better from worked examples than from theorem-proof.

Skip this if

Readers wanting applied, deploy-this guidance or a narrative introduction; this is a university exercise book and assumes real mathematical maturity.

Skip this if you want a security-engineering how-to. It teaches the primitives, not protocol design, key management, or how things break in production.

Key takeaways

A genuine exercise-and-problem book — the corrected problems are the point, not prose.
Covers symmetric, asymmetric and, in recent editions, post-quantum constructions.
Best as a companion to a crypto course; pairs naturally with Avoine et al.

The discrete logarithm problem and integer factorization are the two pillars under most deployed public-key crypto, and the book makes you compute with both.
AES is presented as understandable finite-field arithmetic, not magic, which demystifies the most-used cipher on earth.
Cryptographic security is about quantifying attacker effort, not about secrecy of the algorithm.

How they compare

We rate Understanding Cryptography higher (4/5 against 3/5 for Exercices et problèmes de cryptographie). For most readers, that means Understanding Cryptography is the primary pick and Exercices et problèmes de cryptographie is a useful follow-up.

Exercices et problèmes de cryptographie is pitched at advanced level. Understanding Cryptography is pitched at intermediate level. Read the easier one first if you're not yet comfortable with the topic.

Exercices et problèmes de cryptographie and Understanding Cryptography both cover Cryptography, Foundations, so reading them in sequence reinforces the same material from different angles.

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