TAILIEUCHUNG - Lecture Operating System: Chapter 09 - University of Technology

Lecture Operating System: Chapter 09 - Security presented The security environment, Basics of cryptography, User authentication, Attacks from inside the system, Attacks from outside the system, Protection mechanisms, Trusted systems. | Security Chapter 9 The security environment Basics of cryptography User authentication Attacks from inside the system Attacks from outside the system Protection mechanisms Trusted systems The Security Environment Threats Security goals and threats Intruders Common Categories Casual prying by nontechnical users Snooping by insiders Determined attempt to make money Commercial or military espionage Accidental Data Loss Common Causes Acts of God fires, floods, wars Hardware or software errors CPU malfunction, bad disk, program bugs Human errors data entry, wrong tape mounted Basics of Cryptography Relationship between the plaintext and the ciphertext Monoalphabetic substitution each letter replaced by different letter Given the encryption key, easy to find decryption key Secret-key crypto called symmetric-key crypto Secret-Key Cryptography Public-Key Cryptography All users pick a public key/private key pair publish the public key private

• Hệ điều hành
• Operating System
• Security environment
• Basics of cryptography
• User authentication
• Attacks from inside the system
• Attacks from outside the system
• Operating system concepts
• Lecture Operating system concepts
• Operating system services
• Operating system structures
• Operating system design
• Operating system structure
• Hệ điều hành
• Computer system organization
• Operating System Debugging
• Operating System Generation
• Types of System Calls
• Lecture Operating system principles
• Computer system
• Modern operating systems
• Evolution of operating systems
• Computer system structures
• File system interface
• File system implementation
• Computer system architecture
• The Linux system