PPT-Lecture 2 – Block ciphers, PRFs/PRPs,

DES AES TEK4500 01092020 Håkon Jacobsen hakonjacobsenitsuiono Ideal solution secure channels 2 Internet Alice Bob M Adversary Security goals Data privacy adversary should not be able to read message M . Winifreds Virginia Stamford Hill Walter Reid Stanmore Warner Beach Stonebridge Washington Heights Stonebrigde Waterfall Stonehill Waterloo Sunford Watsonia Parents as well as students will be made aware of this help for our students Students will be encouraged to attend to get the extra help they may need Schedule is on School Calendar Whenever possibl e we will schedule Homerooms during one of our Wed Modes of operation:. many time key (CBC). Online Cryptography Course Dan Boneh. Example applications. : . 1. File systems: Same AES key used to encrypt many files.. Dan Fleck. CS 469: Security Engineering. These slides are modified with permission from Bill Young (. Univ. of Texas). Coming up: What is Good Encryption?. 1. 1. 1. What is Good Encryption. ?. The following are suggested as tests of worth for . Demijan. . Klinc. * . Carmit. . Hazay. † . Ashish. . Jagmohan. **. Hugo . Krawczyk. ** . Tal Rabin. **. * . Georgia . Institute of . Technology. ** . IBM T.J. Watson Research . Labs. † . CSE 5351: Introduction to Cryptography. Reading assignment:. Chapter 2. Chapter 3 (sections 3.1-3.4). You may skip proofs, but are encouraged to read some of them.. 2. Computational Difficulty (One-Way Functions). Chapter 3. Fifth Edition. by William Stallings . Lecture slides by . Lawrie. Brown. Content. Block Cipher Principles. The Data Encryption Standard. Simplified-DES. DES Details. DES Design Issues and Attacks. Lecture 9: Cryptography. 2. Topics. Introduction. Definitions and Terminology. Steganography. Transposition Ciphers. Substitution Ciphers. 3. Introduction. Throughout history, people have had the need to send messages to other people . Thm. : . If . G. is a PRG, then the fixed-length stream cipher . (Gen, . Enc. , Dec) . described below has . indistinguishable encryptions in the presence of an eavesdropper. .. 0. Plaintexts. and . Information and Network Security. . Dr. . Hadi. AL . Saadi. The objective of this chapter is to illustrate the principles of . modern symmetric ciphers. .. The . Data Encryption Standard. (. DES. Online Cryptography Course Dan Boneh. Block ciphers: crypto work horse. E, D. CT Block. n. bits. PT Block. n. bits. Key. k . bits. Canonical examples:. 3DES: n= 64 bits, k = 168 bits. Presented by: Andrew F. Conn. Lecture #12: Solving Congruence's and Cryptography. October 10. th. , 2016. Today. ’. s Topics. More on divisibility and remainders.. Modulo Inverse. Chinese Remainder Theorem. Substitution. Classical Ciphers. Transposition. Data Encryption Standard 1977. Modern Cryptography. “New Directions in Cryptography” 1976. Symmetric . key block ciphers. Public key ciphers. Stream ciphers. Slides Original Source:. M. Stamp, “Information Security: Principles and Practice,” John Wiley. C. . Paar. and J. Pelzl, “Understanding Cryptography – A Textbook for Students and Practitioners,” .