Wk1 - Intro to Crypto - Outline CPSC/PMAT 418 Introduction...

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CPSC/PMAT 418 Introduction to Cryptography Introduction, Motivation, and Terminology Renate Scheidler Department of Mathematics & Statistics Department of Computer Science University of Calgary (Original slides from Mike Jacobson, with modifications by Mark Bauer) Week 1 Renate Scheidler (University of Calgary) CPSC/PMAT 418 Week 1 1 / 27 Outline 1 Motivation 2 Technicalities 3 Overview of Cryptography 4 Cryptography and Information Security 5 Encryption and Decryption Symmetric Cryptosystems Renate Scheidler (University of Calgary) CPSC/PMAT 418 Week 1 2 / 27 Motivation Motivation Cryptography (from the Greek) — ‘hidden writing’ What would you like to see in a secure electronic assignment submission system? Want submission: confidential so no one can steal it (confidentiality) protected so no one can alter it (data integrity) authentic so no one can impersonate creator (entity authentication) safe from intrusion on disk (access control) safe from denial by instructor or TA (non-repudiation) This course will work toward solutions for ensuring all of these. Examples of complete systems at end of the course. Renate Scheidler (University of Calgary) CPSC/PMAT 418 Week 1 3 / 27 Technicalities Resources Course web pages: //people.ucalgary.ca/ ~ rscheidl/418 : Course info, assignments, handouts, course schedule, useful links D2L: Assignment submission (all written assignments to be done in L A T E X) Solutions to assignments posted Grade reporting Resources: recommended textbook: Stinson (3rd ed.) other sources on web (see course web page, in particular the “references” page) Renate Scheidler (University of Calgary) CPSC/PMAT 418 Week 1 4 / 27
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Technicalities Evaluation 40%: 4 assignments (3 weeks for each so firm deadlines) Some written problems common to CPSC 418 and PMAT 418 Some for CPSC 418 only (mainly programming problems, can be done by PMAT 418 students for bonus credit) Some for PMAT 418 only (mainly mathematical and proof-oriented problems, can be done by CPSC 418 students for bonus credit) All work must be done individually 20%: midterm exam (Nov. 6, in-class, closed book) 40%: final exam on all course material Renate Scheidler (University of Calgary) CPSC/PMAT 418 Week 1 5 / 27 Technicalities Course Content Rough schedule: 7 weeks: Symmetric Cryptography (what is it, what does it do, techniques, attacks) 5 weeks: Public Key Cryptography (same) 1 week: Cryptography in practice, real-life use examples More about this course under “about” tab on web page CPSC 418 is part of the Computer Science BSc concentration (area of specialization) in Information Security Renate Scheidler (University of Calgary) CPSC/PMAT 418 Week 1 6 / 27 Overview of Cryptography Basic Terminology Historically, cryptography is the art of sending messages in secret, or disguised form. Definition 1 (encrypt, encipher) To render a message unintelligible except to the intended recipient.
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