PeerJ Author 100 Points Contributions by role Author 100 Contributions by subject area Cryptography Security and Privacy Aisha Ejaz PeerJ Author Summary Algorithms & Analysis of Algorithms Cryptography Quantum Computing Real-Time & Embedded Systems Security & Privacy PeerJ Contributions Articles 1 July 19, 2021 A secure key dependent dynamic substitution method for symmetric cryptosystems Aisha Ejaz, Ijaz Ali Shoukat, Umer Iqbal, Abdul Rauf, Afshan Kanwal https://doi.org/10.7717/peerj-cs.587