<p>This book constitutes the proceedings of the 8th International Conference on Security and Cryptography, SCN 2012, held in Amalfi, Italy, in September 2012. </p><p>The 31 papers presented in this volume were carefully reviewed and selected from 72 submissions. They are organized in topical sections on cryptography from lattices; signature schemes; encryption schemes; efficient two-party and multi-party computation; security in the UC framework; cryptanalysis; efficient constructions; and protocols and combiners.</p>