| Data-driven Block Ciphers for Fast Telecommunication Systems Subjects: Engineering & Technology; Mathematics & Statistics; Electrical & Electronic Engineering; Advanced Mathematics; Communications & Information Processing; Mathematical Logic; The Most Progressive and Complete Guide to DDO-Based Ciphers Developers have long recognized that ciphers based on Permutation Networks (PNs) and Controlled Substitution-Permutation Networks (CSPNs) allow for the implementation of a variety of Data Driven Operations (DDOs). These DDOs can provide fast encryption without incurring excessive |