9 DES Algorithm Left Data [ lalf Right Data Half 56 bits Expansion Substitution Permutation New Left Data Ilalf New Right Data Halr From Security in Computing, Fifth Edition, by Charles P Pfleeger, et al. (ISBN: 9780134085043) Copyright 2015 by Pearson Education, Inc. All rights reservedDES Algorithm 9 From Security in Computing, Fifth Edition, by Charles P. Pfleeger, et al. (ISBN: 9780134085043). Copyright 2015 by Pearson Education, Inc. All rights reserved