18-642: Security Pitfalls
|
|
|
- Brenda Powers
- 5 years ago
- Views:
Transcription
![18-642: Security Pitfalls 4/18/2018 "On two occasions I have been asked [by members of Parliament]: 'Pray, Mr.](/docs-images/86/94176540/images/1-0.jpg "Babbage, if you put into the machine wrong figures, will the right answers come out?")
1 18-642: Security Pitfalls 4/18/2018 "On two occasions I have been asked [by members of Parliament]: 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question." Charles Babbage
2 Anti-Patterns: Master password Home-made cryptography Encryption used for integrity Security Pitfalls Unrealistic security assumptions Security via obscurity Security can be counter-intuitive Attacks are easier than you might think You must defend everywhere The attacker need only succeed one time Brian Smithson The Konami Code 2
3 Security Via Obscurity Is A Bad Idea! Leaving a key under your doormat is not secure Attackers are clever & resourceful They know all the tricks They have lots of time to figure things out Networks make systems more accessible 3
4 Use Strong Cryptography & Keys Kerckhoff s Principle (from 1883!) Secrecy should entirely rest on the secret encryption key Assume public encryption algorithm Almost always, home-made crypto is breakable Use only public, vetted cryptography & security protocols Use vetted implementations (not the book versions) Widely shared secrets will be revealed Master passwords will leak out Someone will reverse-engineer a unit Strong, unique secret key for each item No record kept at factory (database theft) This pushes systems toward public key cryptography for initial information exchange Lorenz Cipher Machine: Tunny (Broken without seeing the machine) A Chip Peel 4
5 Obscurity and Weak Passwords Are Bad! DVD Decrypt in C (ASCII Art Version) Only a 40-bit key Reaver Used To Break WPA WiFi Protected Setup PIN 5
6 How You Use Cryptography Matters Use the right mechanism for the job Encryption for secrecy, not for authentication Use secure hash/digital signature for integrity Don t forget about export restrictions Encryption might be weakened by short keys Typically no strength limits on hash/signatures Consider your assumptions Proprietary protocols are obscurity, not security Firewalls are often permeable Customers will leave default configuration Make the system usable People prefer weak passwords (1234, 777) Complex passwords get written on sticky notes 6
7 Security Testing Isn t Enough Security testing typically finds currently known problems Some problems known but not publicly announced More problems will be discovered after you ship Attacks will likely increase over time How will you respond to emergent threats? Use lists of common weaknesses to avoid making mistakes 7
8 Secret system Security Snake Oil (avoid these!) Security claims rest even in part on we won t tell you how we do it or we have a proprietary algorithm Good systems are secure even against the actual system designer Security should be based on the secret key (which means the actual system designer can t know the secret key in all devices) Technobabble Buzzwords don t make you secure We re unbreakable No, they re not. Best you can do is a sufficiently high cost to break Strong claims about weak systems 2008 hard drive used AES for encrypting the key but only XORd the key with the data Are secret keys sent in unencrypted? Does the manufacturer have a back door device key? osed-but-not-encrypted html 8
9 Secure Communications & Firewalls Most embedded networks are not secure No encryption No authentication Non-secure integrity checks (CRC, checksum) Possible approaches Insert a firewall (helps, but has limitations) Add integrity checks in data field Encrypt (but, this might not help with integrity) VEHICLE MANUFACTURER Logistical Support & SW Upgrades Run-Time Support Services GATEWAY Run-Time Vehicle Management (navigation,lighting, air conditioning, etc.) Vehicle Maintenance Trusted 3rd Party Services (FAA, Weather, Traffic Info, Road Tolls) Mission Planning GATEWAY Untrusted Internet Services GATEWAY Infotainment 3rd Party Subsystems Other Vehicles GATEWAY Passenger Electronics (Bluetooth; WiFi) Many pitfalls here tricky area Usually air gap is infeasible due to functionality GATEWAY Safety Critical Real Time Control Functions Avoid permitting general purpose/risky packets through firewall 9
10 Aircraft Flight Controls Seatbacks? A-330 Running Internet Explorer 10
11 Best Practices For Avoiding Security Pitfalls Avoid Common Pitfalls: Security via obscurity Master password Home-made cryptography Encryption used for integrity Unrealistic security assumptions Consult a specialist Security is complex & often counter-intuitive; get some help! 11
18-642: Security Mitigation & Validation
18-642: Security Mitigation & Validation 11/27/2017 Security Migitation & Validation Anti-Patterns for security mitigation & validation Poorly considered password policy Poorly considered privilege management
Uses of Cryptography
Uses of Cryptography What can we use cryptography for? Lots of things Secrecy Authentication Prevention of alteration Page 1 Cryptography and Secrecy Pretty obvious Only those knowing the proper keys can
18-642: Security Vulnerabilities
18-642: Security Vulnerabilities 11/20/2017 Security Vulnerabilities Anti-Patterns for vulnerabilities Ignoring vulnerabilities until attacked Assuming vulnerabilities won t be exploited: Unsecure embedded
9/30/2016. Cryptography Basics. Outline. Encryption/Decryption. Cryptanalysis. Caesar Cipher. Mono-Alphabetic Ciphers
Cryptography Basics IT443 Network Security Administration Slides courtesy of Bo Sheng Basic concepts in cryptography systems Secret cryptography Public cryptography 1 2 Encryption/Decryption Cryptanalysis
Cryptography Basics. IT443 Network Security Administration Slides courtesy of Bo Sheng
Cryptography Basics IT443 Network Security Administration Slides courtesy of Bo Sheng 1 Outline Basic concepts in cryptography systems Secret key cryptography Public key cryptography Hash functions 2 Encryption/Decryption
Security. Communication security. System Security
Security Communication security security of data channel typical assumption: adversary has access to the physical link over which data is transmitted cryptographic separation is necessary System Security
Network Working Group Request for Comments: 1984 Category: Informational August 1996
Network Working Group IAB Request for Comments: 1984 IESG Category: Informational August 1996 IAB and IESG Statement on Cryptographic Technology and the Internet Status of This Memo This memo provides
18-642: Cryptography 11/15/ Philip Koopman
18-642: Cryptography 11/15/2017 Cryptography Overview Anti-Patterns for Cryptography Using a home-made cryptographic algorithm Using private key when public key is required Not considering key distribution
Basic Concepts and Definitions. CSC/ECE 574 Computer and Network Security. Outline
CSC/ECE 574 Computer and Network Security Topic 2. Introduction to Cryptography 1 Outline Basic Crypto Concepts and Definitions Some Early (Breakable) Cryptosystems Key Issues 2 Basic Concepts and Definitions
Introduction to Cryptography CS 136 Computer Security Peter Reiher October 9, 2014
Introduction to Cryptography CS 136 Computer Security Peter Reiher October 9, 2014 Page 1 Outline What is data encryption? Cryptanalysis Basic encryption methods Substitution ciphers Permutation ciphers
CSC 474/574 Information Systems Security
CSC 474/574 Information Systems Security Topic 2.1 Introduction to Cryptography CSC 474/574 By Dr. Peng Ning 1 Cryptography Cryptography Original meaning: The art of secret writing Becoming a science that
Outline Basics of Data Encryption CS 239 Computer Security January 24, 2005
Outline Basics of Data Encryption CS 239 Computer Security January 24, 2005 What is data encryption? Basic encryption mechanisms Stream and block ciphers Characteristics of good ciphers Page 1 Page 2 Data
CSCI 454/554 Computer and Network Security. Topic 2. Introduction to Cryptography
CSCI 454/554 Computer and Network Security Topic 2. Introduction to Cryptography Outline Basic Crypto Concepts and Definitions Some Early (Breakable) Cryptosystems Key Issues 2 Basic Concepts and Definitions
Outline. Cryptography. Encryption/Decryption. Basic Concepts and Definitions. Cryptography vs. Steganography. Cryptography: the art of secret writing
Outline CSCI 454/554 Computer and Network Security Basic Crypto Concepts and Definitions Some Early (Breakable) Cryptosystems Key Issues Topic 2. Introduction to Cryptography 2 Cryptography Basic Concepts
Instructions 1 Elevation of Privilege Instructions
Instructions 1 Elevation of Privilege Instructions Draw a diagram of the system you want to threat model before you deal the cards. Deal the deck to 3-6 players. Play starts with the 3 of Tampering. Play
CSE 127: Computer Security Cryptography. Kirill Levchenko
CSE 127: Computer Security Cryptography Kirill Levchenko October 24, 2017 Motivation Two parties want to communicate securely Secrecy: No one else can read messages Integrity: messages cannot be modified
Firewalls Network Security: Firewalls and Virtual Private Networks CS 239 Computer Software March 3, 2003
Firewalls Network Security: Firewalls and Virtual Private Networks CS 239 Computer Software March 3, 2003 A system or combination of systems that enforces a boundary between two or more networks - NCSA
Instructions 1. Elevation of Privilege Instructions. Draw a diagram of the system you want to threat model before you deal the cards.
Instructions 1 Elevation of Privilege Instructions Draw a diagram of the system you want to threat model before you deal the cards. Deal the deck to 3 6 players. Play starts with the 3 of Tampering. Play
Fall 2005 Joseph/Tygar/Vazirani/Wagner Final
CS 161 Computer Security Fall 2005 Joseph/Tygar/Vazirani/Wagner Final PRINT your name:, (last) SIGN your name: (first) PRINT your Unix account name: PRINT your TA s name: You may consult any books, notes,
Security issues: Encryption algorithms. Threats Methods of attack. Secret-key Public-key Hybrid protocols. CS550: Distributed OS.
Security issues: Threats Methods of attack Encryption algorithms Secret-key Public-key Hybrid protocols Lecture 15 Page 2 1965-75 1975-89 1990-99 Current Platforms Multi-user timesharing computers Distributed
18-642: Cryptography
18-642: Cryptography 4/16/2018 Cryptography [without system integrity] is like investing in an armored car to carry money between a customer living in a cardboard box and a person doing business on a park
Automotive Security An Overview of Standardization in AUTOSAR
Automotive Security An Overview of Standardization in AUTOSAR Dr. Marcel Wille 31. VDI/VW-Gemeinschaftstagung Automotive Security 21. Oktober 2015, Wolfsburg Hackers take over steering from smart car driver
Cryptography. Cryptography is much more than. What is Cryptography, exactly? Why Cryptography? (cont d) Straight encoding and decoding
Copyright 2000-2001, University of Washington Cryptography is much more than Cryptography Cryptography systems allow 2 parties to communicate securely. The intent is to give privacy, integrity and security
Computer Networks & Security 2016/2017
Computer Networks & Security 2016/2017 Network Security Protocols (10) Dr. Tanir Ozcelebi Courtesy: Jerry den Hartog Courtesy: Kurose and Ross TU/e Computer Science Security and Embedded Networked Systems
5 Tips to Fortify your Wireless Network
Article ID: 5035 5 Tips to Fortify your Wireless Network Objective Although Wi-Fi networks are convenient for you and your employees, there may be unwanted clients using up the bandwidth you pay for. In
Symmetric Key Encryption. Symmetric Key Encryption. Advanced Encryption Standard ( AES ) DES DES DES 08/01/2015. DES and 3-DES.
Symmetric Key Encryption Symmetric Key Encryption and 3- Tom Chothia Computer Security: Lecture 2 Padding Block cipher modes Advanced Encryption Standard ( AES ) AES is a state-of-the-art block cipher.
Practical Aspects of Modern Cryptography
Practical Aspects of Modern Cryptography Lecture 3: Symmetric s and Hash Functions Josh Benaloh & Brian LaMacchia Meet Alice and Bob Alice Bob Message Modern Symmetric s Setup: Alice wants to send a private
e-commerce Study Guide Test 2. Security Chapter 10
e-commerce Study Guide Test 2. Security Chapter 10 True/False Indicate whether the sentence or statement is true or false. 1. Necessity refers to preventing data delays or denials (removal) within the
SECURITY STORY WE NEVER SEE, TOUCH NOR HOLD YOUR DATA
SECURITY STORY WE NEVER SEE, TOUCH NOR HOLD YOUR DATA CTO Office www.digi.me another Engineering Briefing digi.me keeping your data secure at all times ALL YOUR DATA IN ONE PLACE TO SHARE WITH PEOPLE WHO
Outline Key Management CS 239 Computer Security February 9, 2004
Outline Key Management CS 239 Computer Security February 9, 2004 Properties of keys Key management Key servers Certificates Page 1 Page 2 Introduction Properties of Keys It doesn t matter how strong your
Security Handshake Pitfalls
Hello Challenge R f(k, R f(k, R Problems: 1. Authentication is not mutual only authenticates Anyone can send the challenge R. f(k, R Problems: 1. Authentication is not mutual only authenticates Anyone
Information Security CS526
Information CS 526 Topic 3 Ciphers and Cipher : Stream Ciphers, Block Ciphers, Perfect Secrecy, and IND-CPA 1 Announcements HW1 is out, due on Sept 10 Start early, late policy is 3 total late days for
System Structure. Steven M. Bellovin December 14,
System Structure Steven M. Bellovin December 14, 2015 1 Designing a System We have lots of tools Tools are rarely interesting by themselves Let s design a system... Steven M. Bellovin December 14, 2015
Distributed Systems. Lecture 14: Security. Distributed Systems 1
06-06798 Distributed Systems Lecture 14: Security Distributed Systems 1 What is security? policies and mechanisms threats and attacks Overview Security of electronic transactions secure channels authentication
Lecture 18 Message Integrity. Stephen Checkoway University of Illinois at Chicago CS 487 Fall 2017 Slides from Miller & Bailey s ECE 422
Lecture 18 Message Integrity Stephen Checkoway University of Illinois at Chicago CS 487 Fall 2017 Slides from Miller & Bailey s ECE 422 Cryptography is the study/practice of techniques for secure communication,
Distributed Systems. Lecture 14: Security. 5 March,
06-06798 Distributed Systems Lecture 14: Security 5 March, 2002 1 What is security? policies and mechanisms threats and attacks Overview Security of electronic transactions secure channels authentication
Connecting Securely to the Cloud
Connecting Securely to the Cloud Security Primer Presented by Enrico Gregoratto Andrew Marsh Agenda 2 Presentation Speaker Trusting The Connection Transport Layer Security Connecting to the Cloud Enrico
Garantía y Seguridad en Sistemas y Redes
Garantía y Seguridad en Sistemas y Redes Tema 2. Cryptographic Tools Esteban Stafford Departamento de Ingeniería Informá2ca y Electrónica Este tema se publica bajo Licencia: Crea2ve Commons BY- NC- SA
Stream Ciphers. Stream Ciphers 1
Stream Ciphers Stream Ciphers 1 Stream Ciphers Generate a pseudo-random key stream & xor to the plaintext. Key: The seed of the PRNG Traditional PRNGs (e.g. those used for simulations) are not secure.
Cryptography in Lotus Notes/Domino Pragmatic Introduction for Administrators
Cryptography in Lotus Notes/Domino Pragmatic Introduction for Administrators Belfast, 11-Nov-2010 Innovative Software Solutions. Thomas Bahn - graduated in mathematics, University of Hannover - developing
C1: Define Security Requirements
OWASP Top 10 Proactive Controls IEEE Top 10 Software Security Design Flaws OWASP Top 10 Vulnerabilities Mitigated OWASP Mobile Top 10 Vulnerabilities Mitigated C1: Define Security Requirements A security
Cryptography Introduction to Computer Security. Chapter 8
Cryptography Introduction to Computer Security Chapter 8 Introduction Cryptology: science of encryption; combines cryptography and cryptanalysis Cryptography: process of making and using codes to secure
Understanding TETRA Security
Understanding TETRA Security Brian Murgatroyd Tetra Association former chairman Security and Fraud Prevention Group (SFPG) Warren Systems Independent Security Consultant brian@warrensystems.co.uk Agenda
by Peter Deegan Editor-in-Chief Office Watch ISBN: Copyright 2010 Peter Deegan and Office Watch. First Edition March 2010
Privacy & Security in Microsoft Office Protecting your information from prying eyes, theft and deliberate attack by Peter Deegan Editor-in-Chief Office Watch ISBN: 978-0-9806465-1-1 Copyright 2010 Peter
Temporal Key Integrity Protocol: TKIP. Tim Fielder University of Tulsa Tulsa, Oklahoma
Temporal Key Integrity Protocol: TKIP Tim Fielder University of Tulsa Tulsa, Oklahoma History IEEE released the first 802.11 specification back in 1997 The Wired Equivalent Privacy (WEP) authentication/encryption
Designing a System. We have lots of tools Tools are rarely interesting by themselves Let s design a system... Steven M. Bellovin April 10,
Designing a System We have lots of tools Tools are rarely interesting by themselves Let s design a system... Steven M. Bellovin April 10, 2007 1 Some of Our Tools Encryption Authentication mechanisms Access
Green Lights Forever: Analyzing the Security of Traffic Infrastructure
Green Lights Forever: Analyzing the Security of Traffic Infrastructure RAJSHAKHAR PAUL Outline Introduction Anatomy of a Traffic Infrastructure Case Study Threat Model Types of Attack Recommendation Broader
Lecture 6: Symmetric Cryptography. CS 5430 February 21, 2018
Lecture 6: Symmetric Cryptography CS 5430 February 21, 2018 The Big Picture Thus Far Attacks are perpetrated by threats that inflict harm by exploiting vulnerabilities which are controlled by countermeasures.
SEL-3021 Serial Encrypting Transceiver Security Policy Document Version 1.9
SEL-3021 Serial Encrypting Transceiver Security Policy Document Version 1.9 Schweitzer Engineering Laboratories, Inc. May 21, 2007 Copyright 2005-2007 Schweitzer Engineering Laboratories, Inc. May be reproduced
CSC 474/574 Information Systems Security
CSC 474/574 Information Systems Security Topic 3.3: Security Handshake Pitfalls CSC 474/574 Dr. Peng Ning 1 Authentication Handshakes Secure communication almost always includes an initial authentication
Introduction to Cryptography
Introduction to Cryptography 1 2 Definition process data into unintelligible form, reversibly, without data loss typically digitally usually one-to-one in size $ compression analog cryptography: voice
Wireless Security. Comp Sci 3600 Security. Attacks WEP WPA/WPA2. Authentication Encryption Vulnerabilities
Wireless Security Comp Sci 3600 Security Outline 1 2 3 Wired versus wireless Endpoint Access point Figure 24.1 Wireless Networking Components Locations and types of attack Outline 1 2 3 Wired Equivalent
Block Ciphers. Advanced Encryption Standard (AES)
Network Security - ISA 656 Angelos Stavrou September 28, 2008 Codes vs. K = {0, 1} l P = {0, 1} m C = {0, 1} n, C C E : P K C D : C K P p P, k K : D(E(p, k), k) = p It is infeasible to find F : P C K Let
Encryption I. An Introduction
Encryption I An Introduction Reading List ADO and SQL Server Security A Simple Guide to Cryptography Protecting Private Data with the Cryptography Namespaces Using MD5 to Encrypt Passwords in a Database
2/7/2013. CS 472 Network and System Security. Mohammad Almalag Lecture 2 January 22, Introduction To Cryptography
CS 472 Network and System Security Mohammad Almalag malmalag@cs.odu.edu Lecture 2 January 22, 2013 Introduction To Cryptography 1 Definitions Cryptography = the science (art) of encryption Cryptanalysis
David Wetherall, with some slides from Radia Perlman s security lectures.
David Wetherall, with some slides from Radia Perlman s security lectures. djw@cs.washington.edu Networks are shared: Want to secure communication between legitimate participants from others with (passive
CSCE 813 Internet Security Symmetric Cryptography
CSCE 813 Internet Security Symmetric Cryptography Professor Lisa Luo Fall 2017 Previous Class Essential Internet Security Requirements Confidentiality Integrity Authenticity Availability Accountability
SEEM4540 Open Systems for E-Commerce Lecture 03 Internet Security
SEEM4540 Open Systems for E-Commerce Lecture 03 Internet Security Consider 2. Based on DNS, identified the IP address of www.cuhk.edu.hk is 137.189.11.73. 1. Go to http://www.cuhk.edu.hk 3. Forward the
Network Security - ISA 656 IPsec IPsec Key Management (IKE)
Network Security - ISA 656 IPsec IPsec (IKE) Angelos Stavrou September 28, 2008 What is IPsec, and Why? What is IPsec, and Why? History IPsec Structure Packet Layout Header (AH) AH Layout Encapsulating
WAP Security. Helsinki University of Technology S Security of Communication Protocols
WAP Security Helsinki University of Technology S-38.153 Security of Communication Protocols Mikko.Kerava@iki.fi 15.4.2003 Contents 1. Introduction to WAP 2. Wireless Transport Layer Security 3. Other WAP
0/41. Alice Who? Authentication Protocols. Andreas Zeller/Stephan Neuhaus. Lehrstuhl Softwaretechnik Universität des Saarlandes, Saarbrücken
0/41 Alice Who? Authentication Protocols Andreas Zeller/Stephan Neuhaus Lehrstuhl Softwaretechnik Universität des Saarlandes, Saarbrücken The Menu 1/41 Simple Authentication Protocols The Menu 1/41 Simple
Securing the Connected Car. Eystein Stenberg Product Manager Mender.io
Securing the Connected Car Eystein Stenberg Product Manager Mender.io The software defined car Electronics Telematics Infotainment Connected Assisted driving Autonomous Hardware enabled Software enabled
page 1 Introduction to Cryptography Benny Pinkas Lecture 3 November 18, 2008 Introduction to Cryptography, Benny Pinkas
Introduction to Cryptography Lecture 3 Benny Pinkas page 1 1 Pseudo-random generator Pseudo-random generator seed output s G G(s) (random, s =n) Deterministic function of s, publicly known G(s) = 2n Distinguisher
Computer Security CS 526
Computer Security CS 526 Topic 4 Cryptography: Semantic Security, Block Ciphers and Encryption Modes CS555 Topic 4 1 Readings for This Lecture Required reading from wikipedia Block Cipher Ciphertext Indistinguishability
Encryption and Forensics/Data Hiding
Encryption and Forensics/Data Hiding 1 Cryptography Background See: http://www.cacr.math.uwaterloo.ca/hac/ For more information 2 Security Objectives Confidentiality (Secrecy): Prevent/Detect/Deter improper
Most Common Security Threats (cont.)
Most Common Security Threats (cont.) Denial of service (DoS) attack Distributed denial of service (DDoS) attack Insider attacks. Any examples? Poorly designed software What is a zero-day vulnerability?
Data Security and Privacy : Compliance to Stewardship. Jignesh Patel Solution Consultant,Oracle
Data Security and Privacy : Compliance to Stewardship Jignesh Patel Solution Consultant,Oracle Agenda Connected Government Security Threats and Risks Defense In Depth Approach Summary Connected Government
Crypto-systems all around us ATM machines Remote logins using SSH Web browsers (https invokes Secure Socket Layer (SSL))
Introduction (Mihir Bellare Text/Notes: http://cseweb.ucsd.edu/users/mihir/cse207/) Cryptography provides: Data Privacy Data Integrity and Authenticity Crypto-systems all around us ATM machines Remote
CSCI 454/554 Computer and Network Security. Topic 3.2 Secret Key Cryptography Modes of Operation
CSCI 454/554 Computer and Network Security Topic 3.2 Secret Key Cryptography Modes of Operation Processing with Block Ciphers Most ciphers work on blocks of fixed (small) size How to encrypt long messages?
Today s challenge on Wireless Networking. David Leung, CISM Solution Consultant, Security Datacraft China/Hong Kong Ltd.
Today s challenge on Wireless Networking David Leung, CISM Solution Consultant, Security Datacraft China/Hong Kong Ltd. Agenda How Popular is Wireless Network? Threats Associated with Wireless Networking
ALTITUDE DOESN T MAKE YOU SAFE. Satcom Direct s Comprehensive Cyber Security Portfolio for Business Aviation
ALTITUDE DOESN T MAKE YOU SAFE Satcom Direct s Comprehensive Cyber Security Portfolio for Business Aviation CYBER SECURITY IS THE GREATEST THREAT TO EVERY COMPANY IN THE WORLD. IBM CEO GINNI ROMETTY SD
A Look Back at Security Problems in the TCP/IP Protocol Suite Review
A Look Back at Security Problems in the TCP/IP Protocol Suite Review Network Security Instructor:Dr. Shishir Nagaraja Submitted By: Jyoti Leeka October 26, 2011 1 Introduction to the topic and the reason
CS 111. Operating Systems Peter Reiher
Security for Operating Systems: Cryptography, Authentication, and Protecting OS Resources Operating Systems Peter Reiher Page 1 Outline Basic concepts in computer security Design principles for security
COS433/Math 473: Cryptography. Mark Zhandry Princeton University Spring 2017
COS433/Math 473: Cryptography Mark Zhandry Princeton University Spring 2017 Previously on COS 433 Pseudorandom Permutations unctions that look like random permutations Syntax: Key space K (usually {0,1}
Wireless Security Security problems in Wireless Networks
Wireless Security Security problems in Wireless Networks Security of Wireless Networks Wireless networks are everywhere more and more electronic devices are becoming wireless However, ensuring security
Mobile Security Fall 2012
Mobile Security 14-829 Fall 2012 Patrick Tague Class #9 The Internet of Things Partial slide credit to L. Zoia and Y. Zhang Announcements If you haven't signed up for a Survey presentation (two teams,
Test Conditions. Closed book, closed notes, no calculator, no laptop just brains 75 minutes. Steven M. Bellovin October 19,
Test Conditions Closed book, closed notes, no calculator, no laptop just brains 75 minutes Steven M. Bellovin October 19, 2005 1 Form 8 questions I m not asking you to write programs or even pseudo-code
Trust & Privacy: Information Security and Identity Management for Autonomous Vehicles. March 31, failure analysis & prevention
failure analysis & prevention Trust & Privacy: Information Security and Identity Management for Autonomous Vehicles March 31, 2016 A leading engineering & scientific consulting firm dedicated to helping
Lecture 1: Perfect Security
CS 290G (Fall 2014) Introduction to Cryptography Oct 2nd, 2014 Instructor: Rachel Lin 1 Recap Lecture 1: Perfect Security Scribe: John Retterer-Moore Last class, we introduced modern cryptography and gave
1-7 Attacks on Cryptosystems
1-7 Attacks on Cryptosystems In the present era, not only business but almost all the aspects of human life are driven by information. Hence, it has become imperative to protect useful information from
Outline : Wireless Networks Lecture 10: Management. Management and Control Services : Infrastructure Reminder.
Outline 18-759: Wireless Networks Lecture 10: 802.11 Management Peter Steenkiste Departments of Computer Science and Electrical and Computer Engineering Spring Semester 2016 http://www.cs.cmu.edu/~prs/wirelesss16/
IPSec. Slides by Vitaly Shmatikov UT Austin. slide 1
IPSec Slides by Vitaly Shmatikov UT Austin slide 1 TCP/IP Example slide 2 IP Security Issues Eavesdropping Modification of packets in transit Identity spoofing (forged source IP addresses) Denial of service
CIS 6930/4930 Computer and Network Security. Topic 3.2 Secret Key Cryptography Modes of Operation
CIS 6930/4930 Computer and Network Security Topic 3.2 Secret Key Cryptography Modes of Operation 1 Cipher Feedback Mode (CFB) IV Key 64 64 64 64 64 M 1 M 2 M 3 M 4 64 64 64 46 + padding 64 64 64 64 C 1
AIR FORCE ASSOCIATION S CYBERPATRIOT NATIONAL YOUTH CYBER EDUCATION PROGRAM UNIT FIVE. Microsoft Windows Security.
AIR FORCE ASSOCIATION S CYBERPATRIOT NATIONAL YOUTH CYBER EDUCATION PROGRAM UNIT FIVE Microsoft Windows Security www.uscyberpatriot.org AIR FORCE ASSOCIATION S CYBERPATRIOT NATIONAL YOUTH CYBER EDUCATION
Eoin Woods Secure by Design security design principles for the rest of us
Eoin Woods Endava @eoinwoodz Secure by Design security design principles for the rest of us 1 BACKGROUND Eoin Woods CTO at Endava (technology services, 3300 people) 10 years in product development - Bull,
Quantum Encryption Keys
Quantum Technology PROGRAMME ACTIVITY SHEETS Quantum Encryption Keys SHARING DECRYPTION KEYS AND DECODING MESSAGES Every time you send an email or you pay for something online, or with your debit card,
Processing with Block Ciphers
AIT 682: Network and Systems Security Topic 3.2 Secret Cryptography Modes of Operation Instructor: r. Kun Sun rocessing with Block Ciphers Most ciphers work on blocks of fixed (small) size How to encrypt
CSC/ECE 574 Computer and Network Security. Processing with Block Ciphers. Issues for Block Chaining Modes
CSC/C 574 Computer and Network Security Topic 3.2 Secret Cryptography Modes of Operation CSC/C 574 r. eng Ning 1 rocessing with Block Ciphers Most ciphers work on blocks of fixed (small) size How to encrypt
10/1/2015. Authentication. Outline. Authentication. Authentication Mechanisms. Authentication Mechanisms. Authentication Mechanisms
Authentication IT443 Network Security Administration Instructor: Bo Sheng Authentication Mechanisms Key Distribution Center and Certificate Authorities Session Key 1 2 Authentication Authentication is
Lock Picking and Physical Security. Tyler Nighswander
Lock Picking and Physical Security Tyler Nighswander Lock Picking and Physical Security Tyler Nighswander Introduction Who I am: PPP member (specializes in crypto and hardware interested in everything!)
Google Cloud Platform: Customer Responsibility Matrix. April 2017
Google Cloud Platform: Customer Responsibility Matrix April 2017 Introduction 3 Definitions 4 PCI DSS Responsibility Matrix 5 Requirement 1 : Install and Maintain a Firewall Configuration to Protect Cardholder
Security Awareness. Presented by OSU Institute of Technology
Security Awareness Presented by OSU Institute of Technology Information Technologies Division Security Awareness Topics Social Engineering Phishing Social Networks Displaying Sensitive Information Wireless
Backend IV: Authentication, Authorization and Sanitization. Tuesday, January 13, 15
6.148 Backend IV: Authentication, Authorization and Sanitization The Internet is a scary place Security is a big deal! TODAY What is security? How will we try to break your site? Authentication,
2.1 Basic Cryptography Concepts
ENEE739B Fall 2005 Part 2 Secure Media Communications 2.1 Basic Cryptography Concepts Min Wu Electrical and Computer Engineering University of Maryland, College Park Outline: Basic Security/Crypto Concepts
Lecture 1 Applied Cryptography (Part 1)
Lecture 1 Applied Cryptography (Part 1) Patrick P. C. Lee Tsinghua Summer Course 2010 1-1 Roadmap Introduction to Security Introduction to Cryptography Symmetric key cryptography Hash and message authentication
4. SECURITY ASPECTS IN EMBEDDED SYSTEMS
4. SECURITY ASPECTS IN EMBEDDED SYSTEMS 4.0 Introduction Now a day embedded systems and other wireless devices are increasingly being connected to each other and are very much involved in network communications.
Introduction. Controlling Information Systems. Threats to Computerised Information System. Why System are Vulnerable?
Introduction Controlling Information Systems When computer systems fail to work as required, firms that depend heavily on them experience a serious loss of business function. M7011 Peter Lo 2005 1 M7011
BEST PRACTICES FOR PERSONAL Security
BEST PRACTICES FOR PERSONAL Email Security Sometimes it feels that the world of email and internet communication is fraught with dangers: malware, viruses, cyber attacks and so on. There are some simple
Threat analysis. Tuomas Aura CS-C3130 Information security. Aalto University, autumn 2017
Threat analysis Tuomas Aura CS-C3130 Information security Aalto University, autumn 2017 Outline What is security Threat analysis Threat modeling example Systematic threat modeling 2 WHAT IS SECURITY 3
Applied IT Security. Device Security. Dr. Stephan Spitz 10 Development Security. Applied IT Security, Dr.
Applied IT Security Device Security Dr. Stephan Spitz Stephan.Spitz@gi-de.com Overview & Basics System Security Network Protocols and the Internet Operating Systems and Applications Operating System Security