Asiacrypt 2017, the 23rd Annual International Conference on the Theory and Applications of Cryptology and Information Security, will take place at Harbour Plaza North Point in Hong Kong, China on December 3-7 2017. Asiacrypt 2017 is organized by the International Association for Cryptologic Research (IACR). Original research papers on all technical aspects of cryptology are solicited for submission. All submissions will be blind-refereed and thus must be anonymous, with no author names, affiliations, acknowledgments, or obvious references. Submissions should begin with a title, a short abstract, and a list of keywords, followed by an introduction, a main body, an appendix (if any), and references, within 30 pages. The introduction should summarize the contributions of the paper at the level understandable for a non-expert reader.