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Final

31268 Study Guide - Final Guide: Non-Repudiation, Public-Key Cryptography, Public Key Certificate

3 Pages
89 Views
Fall 2017

Department
Information Technology
Course Code
31268
Professor
Chris Wong
Study Guide
Final

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Web Systems Summary 2
Video 03 - Security:
What are the 3 basic security principles?
Confidentiality, Integrity and Availability (C.I.A)
Confidentiality
Integrity
Availability
Keep secrets from
unauthorised users
Authenticate the
user before showing
them information
Keep information
flowing between
authorised users
Safeguarding
information by
cryptography
Allow access to
information to
authorised users
Safeguard accuracy
of information
Keep secrets from
unauthorised users
Safeguarding
information by
cryptography
Don't allow
information to be
altered by
unauthorised users
Keep information
flowing between
authorised users
Information is
allowed to flow to
users when required
Allow access to
information to
authorised users
Security attack + Appropriate security principle:
Availability: Cyber criminal attempts a Denial of Service (DoS) attack on our website
Integrity: A staff member tries to modify the student satisfaction rating on a tutorial
Confidentiality: A student runs a program to listen on the lab’s network to try steal
answers to the online exam.
Confidentiality (Authentical/Access Controls): A student attempts to fool the help
desk into letting him log on to the student admin system by pretending to by the
subject coordinator.
What is a security mechanism? What is a security service?
Security mechanism: designed to detect, prevent or recover from a security attack
Security service: a service that enhances security of data transfers using 1 or more
security mechanisms
List some typical security services:
Authentication, Integrity, Confidentiality, Availability,Non-repudiation,Access
Controls
What is non-repudiation?
Guarantee: assurance and authentication cannot be denied
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Description
Web Systems Summary 2 Video 03 Security: What are the 3 basic security principles? Confidentiality, Integrity and Availability (C.I.A) Confidentiality Integrity Availability Keep secrets from Safeguard accuracy Keep information unauthorised users of information flowing between Authenticate the Keep secrets from authorised users user before showing unauthorised users Information is them information Safeguarding allowed to flow to Keep information information by users when required flowing between cryptography Allow access to authorised users Dont allow information to Safeguarding information to be authorised users information by altered by cryptography unauthorised users Allow access to information to authorised users Security attack + Appropriate security principle: Availability: Cyber criminal attempts a Denial of Service (DoS) attack on our website Integrity: A staff member tries to modify the student satisfaction rating on a tutorial Confidentiality: A student runs a program to listen on the labs network to try steal answers to the online exam. Confidentiality (AuthenticalAccess Controls): A student attempts to fool the help desk into letting him log on to the student admin system by pretending to by the subject coordinator. What is a security mechanism? What is a security service? Security mechanism: designed to detect, prevent or recover from a security attack Security service: a service that enhances security of data transfers using 1 or more security mechanisms List some typical security services: Authentication, Integrity, Confidentiality, Availability,Nonrepudiation,Access Controls What is nonrepudiation? Guarantee: assurance and authentication cannot be denied
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