PPT-1 Lecture3 – Introduction to Cryptography 1

Rice ELEC 528 COMP 538 Farinaz Koushanfar Spring 2009 2 Summary Substitution ciphers Permutations Making good ciphers DES AES Slides are courtesy of Leszek T Lilien from WMich httpwwwcswmichedullilien. 2tei!t=Ae(i!\r 2)t(2)(The2isputinnowtosimplifylateralgebra.)Dierentiatingthisjustbringsdownafactori!\r 2.SosubstitutingEquaion(2)inEquation(1)gives(aftercancelingAe(i!\r 2)t)m(i!\r 2)2+b(i!\r 2) Introduction to cryptography. In 60 minutes ….. 8/20/2015. CIS4930 Introduction to Cryptography. 1. Definitions. Cryptography. : the study of secret (crypto) writing (graph=write). Something cryptographers (security analysts) do … . whichwillalsoserveasmotivationforDenition1.2below.Itmustbenotedthatthisisverydifferentfromtheexpectedmaximumexpansionforthecompletespace,asthatwillbe"$#\n !%'&()+*&(,-%)*,./*whichis CS. . 111. Operating . Systems . Peter Reiher. . Outline. Basic concepts in computer security. Design principles for security. Important security tools for operating systems. Access control. Cryptography and operating systems. Josh Benaloh. Tolga Acar. Fall 2016. October 25, 2016. 2. The wiretap channel. Key (K. 1. ). Key (K. 2. ). Eavesdropper. Plaintext. (P). Noisy insecure. channel. Encrypt. Decrypt. Alice. Bob. Plaintext. Week two!. The Game. 8 groups of 2. 5 rounds. Math 1. Modern history. Math 2. Computer Programming. Analyzing and comparing Cryptosystems. 10 questions per round. Each question is worth 1 point. Math Round 1. CSE3002 – History of Computing. Group A: Daniel . Bownoth. , Michael Feldman, Dalton Miner, Ashley Sanders. Encryption. The process of securing information by transforming it into code.. Encrypted data must be deciphered, or . 1. Part I: Crypto. Chapter 2: Crypto Basics. MXDXBVTZWVMXNSPBQXLIMSCCSGXSCJXBOVQXCJZMOJZCVC. TVWJCZAAXZBCSSCJXBQCJZCOJZCNSPOXBXSBTVWJC. JZDXGXXMOZQMSCSCJXBOVQXCJZMOJZCNSPJZHGXXMOSPLH. JZDXZAAXZBXHCSCJXTCSGXSCJXBOVQX. Symmetric Encryption. Key exchange . Public-Key Cryptography. Key exchange. Certification . Why Cryptography. General Security Goal. - . Confidentiality . (. fortrolig. ). - . End-point Authentication . Introduction . & Overview. Contents from Prof. . . Kwangjo. . Kim and Other Sources. Syllabus Overview. Basic . terms . Quick . overview on information security . Course Detail. Objectives:. . 1. Administrative Note. Professor Blocki is traveling and will be back on Wednesday. . E-mail: . jblocki@purdue.edu. . Thanks to Professor Spafford for covering the first lecture!. 2. https://www.cs.purdue.edu/homes/jblocki/courses/555_Spring17/index.html. to’s. . u. sing . OpenSSL. In this session, we will cover cryptography basics and explore cryptographic functions, performance and examples using . OpenSSL. . . July 2012. LAB: . http://processors.wiki.ti.com/index.php/Sitara_Linux_Training:_Cryptography. Online Cryptography Course Dan Boneh. Welcome. Course objectives:. Learn how crypto primitives work. Learn how to use them correctly and reason about security. My recommendations:. Collecting data. 2. Data . Statistics is a way of thinking—thinking about ways to . gather. and analyze data.. Trust data. 3. 3. Resource of Data. Experiment/ clinical trial. Survey. http://www.nhs.uk/Conditions/Clinical-trials/Pages/Healthresearch.aspx.