This volume comprises a collection of papers presented at the Workshop on Information Protection, held in Moscow, Russia in December 1993. The 16 thoroughly refereed papers by internationally known scientists selected for this volume offer an exciting perspective on error control coding, cryptology, and speech compression. In the former Soviet Union, research related to information protection was often shielded from the international scientific community. Therefore, the results presented by Russian researchers and engineers at this first international workshop on this topic are of particular interest; their work defines the cutting edge of research in many areas of error control, cryptology, and speech recognition.