Original research papers on symmetric cryptology are invited for submission to FSE 2018. The scope of FSE concentrates on fast and secure primitives for symmetric cryptography, including the design and analysis of block ciphers, stream ciphers, encryption schemes, hash functions, message authentication codes, (cryptographic) permutations, authenticated encryption schemes, cryptanalysis and evaluation tools, and security issues and solutions regarding their implementation. Since last year, FSE 2018 also solicits submissions for Systematization of Knowledge (SoK) papers. These papers aim at reviewing and contextualizing the existing literature in a particular area in order to systematize the existing knowledge in that area. To be considered for publication, they must provide an added value beyond prior work, such as novel insights or reasonably questioning previous assumptions.