EMTM 553: E-commerce Systems Lecture 6: Basic Cryptography

Jun 18, 2013

610 likes | 818 Views

4/20/01. EMTM 553. 2. Outline. How cryptography worksSecrete key cryptographyPublic key cryptographyDigital signatureMessage digestDistribution of public keysReal-world systems. 4/20/01. EMTM 553. 3. Cryptography: Basic Terminology. Plaintext (or cleartext)The message.Denoted by M or P.Encryption (encipher)Encoding of message.Denoted by E.CiphertextEncrypted message.Denoted by C.Decryption (decipher)decoding of ciphertextdenoted by D..

Share Presentation

Embed Code

Link

hide

Download Presentation

EMTM 553: E-commerce Systems Lecture 6: Basic Cryptography

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

EMTM 553 Electronic Commerce Systems

EMTM 553 Electronic Commerce Systems. Insup Lee Department of Computer and Information Science University of Pennsylvania lee@cis.upenn.edu www.cis.upenn.edu/~lee. March 9, 2001. Instructor: Insup Lee Office hours: 4:30-5:30 Friday after class

436 views • 6 slides

Introduction to Cryptography

Introduction to Cryptography. --- Foundations of information security --- Lecture 7. Outline. Why study cryptology ? Basic terms, notations and structure of cryptography Private & public key cryptography examples Modern secret key ciphers : usage and methodology

632 views • 31 slides

Public Key Cryptography

Public Key Cryptography. Tom Horton Alfred C. Weaver CS453 Electronic Commerce. References. Chap. 12 of Treese and Stewart textbook Web articles on PGP, GPG, Phil Zimmerman Bruce Schneier, “Applied Cryptography,” John Wiley & Sons Andrew Tanenbaum, “Computer Networks,” Prentice-Hall

978 views • 58 slides

AMA University

AMA University. Course code: ABI 204 Introduction to E-Commerce Chapter 7: Payment Systems for Electronic Commerce. Objectives . In this chapter, you will learn about: The basic functions of payments systems that are used in electronic commerce

766 views • 22 slides

Cryptography and Cryptanalysis

Cryptography and Cryptanalysis. Reference Matt Bishop, Computer Security , Addison Wesley, 2003. Cryptography and Cryptanalysis (p.2). Cryptography The art and science of concealing meaning. The basic component of cryptography is a cryptosystem . Cryptanalysis The breaking of codes.

428 views • 4 slides

lecture 3 : systems and ST this lecture introduces basic systems and systems thinking concepts:

lecture 3 : systems and ST this lecture introduces basic systems and systems thinking concepts: what is the method used in science and should OR/IE use the same method? subject – object duality decision making in complex situations efficacy – effectiveness - efficiency what is a system?

726 views • 41 slides

Lecture 8 Term 2

Lecture 8 Term 2. 28/2/12. Management Information Systems Chapter 10 E-Commerce: Digital Markets, Digital Goods. Electronic Commerce. B2B e-commerce: New efficiencies and relationships Electronic data interchange (EDI)

484 views • 39 slides

CRYPTOGRAPHY & NETWORK SECURITY

CRYPTOGRAPHY & NETWORK SECURITY. Introduction and Basic Concepts Eng. Wafaa Kanakri Computer Engineering Umm Al- Qura University. CRYPTOGRAPHY & NETWORK SECURITY. Textbook: W. Stallings. Cryptography & Network Security, Fifth Edition. Overview of Cryptography & Its Applications.

1.54k views • 13 slides

Cryptography Basics ( ch 2)

Cryptography Basics ( ch 2). IT443 – Network Security Administration Instructor: Bo Sheng. Outline. Basic concepts in cryptography system Secret key cryptography Public key cryptography Hash functions. Encryption/Decryption. Plaintext: a message in its original form

528 views • 29 slides

Security+ Guide to Network Security Fundamentals, Third Edition

Chapter 11 Basic Cryptography. Security+ Guide to Network Security Fundamentals, Third Edition. Defining Cryptography. Objectives. Define cryptography Describe hashing List the basic symmetric cryptographic algorithms Describe how asymmetric cryptography works

691 views • 57 slides

Cryptography

Cryptography. What We Will Learn. Basic cryptographic primitives Attacks on cryptography When to use which cipher If you want to learn more about this topic take CISC 499 with Shanghua Teng in Fall 2013. What Is Cryptography?. Goal: Protect private communication in the public world

988 views • 79 slides

Lecture 24 Cryptography

Lecture 24 Cryptography. CPE 401 / 601 Computer Network Systems. slides are modified from Jim Kurose and Keith Ross and Dave Hollinger. Cryptography. Encryption Scramble data so that only someone with a secret can make sense of the data. Decryption Descrambling encrypted data. K. K.

547 views • 43 slides

E-Commerce

E-Commerce. Chapter 11 – Social Media Information Systems Sections Q1-Q4 Skip Section Q5. Objectives. Define e-commerce and important types of e-commerce. Know the benefits of e-commerce and how e-commerce is different from traditional business transactions.

822 views • 40 slides

Lecture 2.3: Private Key Cryptography III

Lecture 2.3: Private Key Cryptography III. CS 436/636/736 Spring 2012 Nitesh Saxena. Course Administration. TA/Grader: Eric Frees : Email: efrees@uab.edu Office hrs: 2-4pm on Wednesdays, Ugrad lab (CH 154) HW1 heads up To be posted by this weekend Covers lecture 1, 2.1 – 2.3

489 views • 37 slides

COM 5336 Cryptography Lecture 6 Public Key Cryptography & RSA

COM 5336 Cryptography Lecture 6 Public Key Cryptography & RSA. Scott CH Huang. COM 5336 Cryptography Lecture 6. Outline. One-way Trapdoor functions Basic Number Theory for RSA RSA Digital Signatures. One-Way Trapdoor Functions. One-Way Functions.

648 views • 33 slides

Lecture 02 Symmetric Cryptography 1

Lecture 02 Symmetric Cryptography 1. Dr. Supakorn Kungpisdan supakorn@mut.ac.th. Roadmap. Overview of Cryptography Types of Cryptography Symmetric Cryptography Classical Cryptographic Techniques Block Ciphers Modern Cryptographic Techniques. Basic Terminology.

927 views • 70 slides

Cryptography

Cryptography. Lecture 6 Stefan Dziembowski www.dziembowski.net stefan@dziembowski.net. Plan. Number theory in cryptography – a motivation. Basic number-theoretic problems. Introduction to group theory. Chinese Reminder Theorem The RSA group Discrete log. Number theory in cryptography.

823 views • 60 slides

CSC 474 Information Systems Security

CSC 474 Information Systems Security. Topic 2.1 Introduction to Cryptography. Cryptography. Cryptography Original meaning: The art of secret writing Becoming a science that relies on mathematics (number theory, algebra) Process data into unintelligible form, reversible, without data loss

401 views • 26 slides

Cryptography

Cryptography. Chapter 5. Objectives. Identify and describe the three types of cryptography. List and describe current cryptographic algorithms. Explain how cryptography is applied for security. Agenda. Basic Terms and the Encryption/Decryption Process Types of Ciphers

1.23k views • 73 slides

Lecture 5 Quantum Information 1: Quantum Communication & Quantum Cryptography

Lecture 5 Quantum Information 1: Quantum Communication & Quantum Cryptography. Note: HWK2 posted on course web, due next Wed 2/12 in class. Course Outline. Part 1: basic review: Optics+Quantum; Part 2: Basic Light-matter interaction; laser; Part 3: Quantum Optics of photons

865 views • 24 slides

COS 433: Cryptography

COS 433: Cryptography. Princeton University Fall 2005 Boaz Barak. Lecture 3: Computational Hardness. “Impatient Cryptography”. Last Lecture: Simple algorithm (~10 lines of C code) to break every encryption with key-length < message-length.

219 views • 12 slides

Signals and Systems Lecture 3

Signals and Systems Lecture 3. CT and DT Systems Basic Systems Properties. CT and DT Systems (P28). This subject deals with mathematical method used to describe signals and to analyze and synthesize systems. Signals are variables that carry information

715 views • 38 slides

More Related

EMTM 553: E-commerce Systems Lecture 6: Basic Cryptography

EMTM 553: E-commerce Systems Lecture 6: Basic Cryptography

Presentation Transcript

EMTM 553 Electronic Commerce Systems

Introduction to Cryptography

Public Key Cryptography

AMA University

Cryptography and Cryptanalysis

lecture 3 : systems and ST this lecture introduces basic systems and systems thinking concepts:

Lecture 8 Term 2

CRYPTOGRAPHY &amp; NETWORK SECURITY

Cryptography Basics ( ch 2)

Security+ Guide to Network Security Fundamentals, Third Edition

Cryptography

Lecture 24 Cryptography

E-Commerce

Lecture 2.3: Private Key Cryptography III

COM 5336 Cryptography Lecture 6 Public Key Cryptography &amp; RSA

Lecture 02 Symmetric Cryptography 1

Cryptography

CSC 474 Information Systems Security

Cryptography

Lecture 5 Quantum Information 1: Quantum Communication &amp; Quantum Cryptography

COS 433: Cryptography

Signals and Systems Lecture 3

CRYPTOGRAPHY & NETWORK SECURITY

COM 5336 Cryptography Lecture 6 Public Key Cryptography & RSA

Lecture 5 Quantum Information 1: Quantum Communication & Quantum Cryptography