Preface to Volume 2026, Issue 1

Transactions on Symmetric Cryptology (ToSC) is a journal covering original results from all areas of symmetric cryptography, including -but not limited to -the design and analysis of blockciphers, stream ciphers, cryptographic hash functions, pseudorandom functions, message authentication codes, cryptographic permutations, encryption schemes, authenticated encryption schemes, accordion cipher modes, and security issues and solutions regarding their implementations.Furthermore, ToSC also covers cryptanalytic techniques and tools.