This document discusses different types of security mechanisms, including specific and pervasive security mechanisms. It outlines eight specific security mechanisms, including encipherment, digital signatures, and access control. It then describes five types of pervasive security mechanisms: trusted functionality, security labels, event detection, security audit trails, and security recovery. Pervasive security mechanisms are directly related to the required level of security.

1. Topic: Pervasive Security
Mechanism
Salman Memon
2k12/IT/109

2. SECURITY MECHANISM
• Feature designed to detect, prevent, or
recover from a security attack
• There are two categories of security
mechanisms: specific security mechanism
and pervasive security mechanism

3. Specific security mechanisms
• Eight types:
1.Encipherment
2.Digital signature
3.Access control mechanisms
4.Data integrity mechanisms
5.Authentication exchanges
6.Traffic padding
7.Routing control
8. Notarization

4. Pervasive security mechanisms
• They are directly related to the level of
security required.
• There are 5 types of pervasive security
mechanisms.

5. 1- Trusted Functionality
• Any functionality providing or accessing security
mechanisms should be trustworthy

6. 2- Security Label
• Any resource (e.g. stored data, processing
power, communications bandwidth) may have
security label associated with it to indicate
security sensitivity

7. 3- Event Detection
• It is used to detect apparent violations of
security.
• It may be Single bit or Multi bit error

8. 4- Security Audit Trials
• Log of past security-related events
• Permits detection and investigation of past
security breaches

9. 5- Security Recovery
• A process that takes recovery actions on the
basis of requests from mechanisms
• Recover the system as soon as possible

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