Services and Security through Cryptography

Jan 19, 2013

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Securing your Server. So, you wanna secure your server? The usual steps apply:Run only what you need nothing extra.Keep it up-to-date.Is your kernel patchable"?Run DNS (BIND) in a jail?Watch permissions

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Services and Security through Cryptography

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Cryptography and Network Security

Cryptography and Network Security. Third Edition by William Stallings Lecture slides by Lawrie Brown. Chapter 20 – Firewalls. The function of a strong position is to make the forces holding it practically unassailable — On War, Carl Von Clausewitz. Introduction.

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Security and Cryptography. Security: all issues which make secure communication (information transmission, two (multiple) party interaction) over insecure channels . Cryptography: the science and art of manipulating messages to make them secure. Classical cryptographic techniques.

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Cryptography and Network Security. Third Edition by William Stallings Lecture slides by Lawrie Brown. Chapter 8 – Introduction to Number Theory. The Devil said to Daniel Webster: "Set me a task I can't carry out, and I'll give you anything in the world you ask for."

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Security and Cryptography

Security and Cryptography. CSE 461 Ben Greenstein Jeremy Elson TA: Ivan Beschastnikh. Administrivia. Project 3, part 2 due December 5 Special extended office hours: Tuesday, December 2, 11:30-1:30 Room 218 No HW this week. Security in Practice. Attackers have the advantage

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Cryptography and Network Security. Fourth Edition by William Stallings Lecture slides by Lawrie Brown (Changed by Somesh Jha). Message Authentication and Hash Functions.

479 views • 34 slides

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Cryptography and Network Security. Chapter 4 – Finite Fields. Third Edition by William Stallings Lecture slides by Lawrie Brown. Introduction. will now introduce finite fields of increasing importance in cryptography AES, Elliptic Curve, IDEA, Public Key concern operations on “numbers”

406 views • 25 slides

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Cryptography and Network Security. Sixth Edition by William Stallings . Chapter 9. Public Key Cryptography and RSA.

1.35k views • 40 slides

Cryptography and Network Security

Cryptography and Network Security. Sixth Edition by William Stallings . Chapter 6. Block Cipher Operation.

1.16k views • 26 slides

Cryptography and Network Security

Cryptography and Network Security. Sixth Edition by William Stallings . Chapter 5. Advanced Encryption Standard. “It seems very simple.” “It is very simple. But if you don’t know what the key is it’s virtually indecipherable.” — Talking to Strange Men, Ruth Rendell.

655 views • 29 slides

Security and Cryptography

Security and Cryptography. Security Threats. Impersonation Pretend to be someone else to gain access to information or services Lack of secrecy Eavesdrop on data over network Corruption Modify data over network Break-ins Take advantage of implementation bugs Denial of Service

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CRYPTOGRAPHY AND INFORMATION SECURITY

CRYPTOGRAPHY AND INFORMATION SECURITY. Lecturer: Dr. Nguyen Nam Hong Tel.: 048781437. Mobi.: 0912312816. Email: nguyennamhong2003@yahoo.com.au Website: www.freewebs.com/namhongthanhloc. COURSE CONTENTS (1/4). 1. Introduction 2. Classical Encryption Techniques 3. Block Cipher

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CRYPTOGRAPHY AND INFORMATION SECURITY

CRYPTOGRAPHY AND INFORMATION SECURITY. Lecturer: Dr. Nguyen Nam Hong Tel.: 048781437. Mob.: 0912312816. Email: nguyennamhong2003@yahoo.com.au Website: www.freewebs.com/namhongthanhloc Chapter 16. Electronic Mail Security. Chapter 16. Electronic Mail Security (1/3).

492 views • 32 slides

Security and Cryptography

Security and Cryptography. Portions stolen from Prof. Sahai (spring 2001). December 4, 2001. Administrivia. Homework assignment 7 due today Homework Assignment 8 due January 7,2002 Homework 9 Part a due next Tuesday Part b due next Thursday Part c due next Friday Lab 8 this week

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Cryptography and Network Security

Cryptography and Network Security. Third Edition by William Stallings Lecture slides by Lawrie Brown. Chapter 9 – Public Key Cryptography and RSA.

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Security: Cryptography

Security: Cryptography. I206 Spring 2012 John Chuang. Some slides adapted from Coulouris, Dollimore and Kindberg; Dave Messerschmidt; Adrian Perrig. Eavesdropping passwords, credit card numbers, etc. Tampering of data Birthday attack Impersonation Replay attack

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Cryptography and Network Security

Cryptography and Network Security. Sixth Edition by William Stallings . Chapter 1. Overview.

888 views • 30 slides

Cryptography and Network Security

Cryptography and Network Security. Third Edition by William Stallings Lecture slides by Lawrie Brown. Chapter 9 – Public Key Cryptography and RSA. Private-Key Cryptography. traditional private/secret/single key cryptography uses one key shared by both sender and receiver

487 views • 20 slides

Cryptography and Network Security

Cryptography and Network Security. Third Edition by William Stallings Lecture slides by Lawrie Brown. Chapter 12 – Hash Algorithms.

421 views • 27 slides

Security and Cryptography

267 views • 24 slides

Cryptography and Network Security

Cryptography and Network Security. Number theory. Topics. Basic Number theory Chinese Remainder theorem Fermat and Euler's theorem Primality test – factoring. The basics – and a few minor details. Modulo arithmetic Addition and additive inverse are easy

307 views • 22 slides

Security and Cryptography

Security and Cryptography. CS-502 Operating Systems Fall 2007 (Slides include materials from Operating System Concepts , 7 th ed., by Silbershatz, Galvin, & Gagne and from Modern Operating Systems , 2 nd ed., by Tanenbaum). Puzzle. Alice wishes to send secret message to Bob

553 views • 54 slides

Fundamentals of Cryptography: Algorithms, and Security Services

Register to the course mailing list: https://lists.ccs.neu.edu/bin/listinfo/csg254. Fundamentals of Cryptography: Algorithms, and Security Services. Professor Guevara Noubir Northeastern University noubir@ccs.neu.edu. Cryptography: Theory and Practice, Douglas Stinson, Chapman & Hall/CRC

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