Quoting Wikipedia:

Cryptography or cryptology is the practice and study of techniques for secure communication in the presence of third parties called adversaries. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce.

In 2006, I was given the opportunity (through an EGIDE funded mission), to give a serie of lectures (in french) in the context of the “Cours Sécurité DEA Informatique” of the Univ. of Yaounde I (Cameroon). I also participated to several practical sessions on this topic within the Master in Security, Cryptology and Coding of Information systems, a joint program between Université Joseph Fourier (UJF) (now Université Grenoble-Alpes) and Grenoble INP between 2004 and 2007.

This page offers the material I prepared for this lecture.


Title Size Language
  Introduction à la cryptographie 2MB
  Introduction à la cryptographie à clé publique, by: F. Leprévost, S. Varrette and N. Bernard 882 KB
  Fonctions de Hachage et Signatures Electroniques 815K
  Architectures PKI 346K

Note: I have also some support slides on elliptic curves cryptography but haven’t collected the authorization to display them online. If you need them, mail me so I can put you in contact with the primary authors of these slides.

Support Books

Several reference books can be used as support for this lecture: [1] [2] [3].

Otherwise, I strongly encourage you to check my own books related to this topic:

Foundations of Coding
Compression, Encryption, Error-Correction

Théorie des codes
(Compression, Cryptage, Correction) -- 2nd Ed.

To a minor measure, you can also refer to my book chapters in:

Exercises / Projects

Important: I feel obliged to insist: the below material (including appendix layout) are quite old now and would deserve a big refresh. They are proposed for archiving reasons in the hope they might still be useful to students / lecturers.
You will find way more up-to-date exercises in my book.

Title Size Language
  TD: Pré-requis à la cryptographie à clé publique 69KB
  TD: le Chiffrement RSA 38KB
  TD: Collisions & fonctions de hachage 49KB
  TD Analyse de Fréquence - src_TD-analyse_freq.tgz 126KB
  Project (C): Implémentation de l’algorithme D.E.S - src_Project_C_DES.tgz 139KB
  TP (C++): Manipulation du corps F256 79K
  Project (C++): Implémentation de l’algorithme A.E.S - src_Project_C++_AES.tgz 181KB

Through the UJF/INPG Master SCCI, I prepared in collaboration with Prof. Gérard Vinel several exercises over MAPLE proposed below:

Title Size Language
  TP MAPLE: Théorie des Nombres 78KB
  TP MAPLE: Tests de primalité probabilistes 76KB

Past Exams

Below are (old) exams I prepared for lectures related to cryptography (and network security).

Year Level Institute Download
2004-2005 CUT3/L3 UL CUT3   Examen: Cryptographie
2005-2006 DEA I1/M1 Univ. of Yaounde   Examen 1: Cryptographie & Securité Réseau
2005-2006 DEA I1/M1 Univ. of Yaounde   Examen 2: Cryptographie & Securité Réseau


  1. D. R. Stinson, Cryptography: Theory and Practice, 2nd ed. Chapman & Hall/CRC Press, 2002.
  2. B. Schneier, "Cryptographie Appliquée", 2nd ed. NY: Vuibert, Wiley and International Thomson Publishing, 1997.
  3. A. J. Menezes, S. A. Vanstone, and P. C. V. Oorschot, Handbook of Applied Cryptography, 1st ed. CRC Press, Inc., 1996. see [http://www.cacr.math.uwaterloo.ca/hac/](http://www.cacr.math.uwaterloo.ca/hac/)