The 2nd International Conference on Information Security and Cryptology (ICISC)wassponsored bythe KoreaInstituteofInformationSecurityandCr- tology(KIISC). It took place at Korea University, Seoul, Korea, December 9-10, 1999. Jong In Lee of Korea University was responsible for the organization. The call for papers brought 61 papers from 10 countries on four continents. As in the last year the review process was totally blind. The informationabout - thors or their a?liationwas not given to Technical Program Committee (TPC) members. Each TPC member was random-coded and did not even know who wasreviewing which paper. The 23 TPC members ?nallyselected 20 top-quality papers for presentation at ICISC 1999 together with one invited talk. Serge Vaudenay gave an invited talk on “Provable Security for Conventional Crypt- raphy”. Many people contributed to ICISC’99. First of all I would like to thank all the authorswho submitted papers. I amgrateful to the TPC members fortheirhard workreviewing the papers andthe OrganizationCommittee members for all the supporting activities which made ICISC’99 a success. I would like to thank the Ministry of Information and Communication of Korea (MIC) which ?nancially sponsored ICISC’99. Special thanks go to Pil Joong Lee and Heung Youl Youm who helped me during the wholeprocess of preparation for the conference. Last, but notleast, I thank my students, KyuMan Ko, SungkyuChie, andChan Yoon Jung.