Chapter 3. Block Ciphers & The Data Encryption Standard. Contents. Block Cipher Principles The Data Encryption Standard The Strength of DES Differential and Linear Cryptananlysis Block Cipher Design Principles. Block Cipher principles. Stream Ciphers and Block Ciphers
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Block Ciphers & The Data Encryption Standard
DES is a Feistel cipher with the exception of IP and IP-1.
two 28-bit halves.
P[i1,i2,...,ia](+)C[j1,j2,...,jb] = K[k1,k2,...,kc]
where ia,jb,kc are bit locations in P,C,K