Security and Cryptography I + II
Script, Exercises, Exemplary Solutions
Slides for Security and Cryptography I and the first half of Security and Cryptography II
(the topics covered are those of the Lectures "Einfuehrung in die Datensicherheit" and "Kryptographie" I did give until 2004)
Slides for the second half of Security and Cryptography II
(the topics covered are those of the Lecture "Datensicherheit durch verteilte Systeme" I did give until 2004)
If you prefer reading all that in German, get it from here.