Computer Security Flashcards
What is platform virtualization?
- Helps in malware protection
- The hypervisor offers virtual hardware interfaces to the VMs
- Platform virtualization reduces the energy demand
What is the protection ring numbers for the «Type 1 VM architecture»?
Application: 3
Guest OS VM: 0
Hypervisor: -1
List three main TPM-supported devices
- Authenticated/ measured bot
- Sealed storage/ encryption
- Remote attestation
Secure Boot
….?
What is platform virtualization?
1.
Platform virtualization or Hardware virtualization refers to the creation of a virtual machine that acts like a real computer with an operating system. Learn more in: Virtualization Technology and Security Challenges
2.
A virtualization model which creates a logical abstraction of a hardware platform. This logical abstraction is typically denoted as a “virtual machine”, which is capable of simulating the capabilities of the concerned platform. Learn more in: On the Pervasive Adoption of Grid Technologies: A Grid Operating System
What is a Guest OS?
Is the OS software that runs, feks Linux, Ubuntu etc.
What is a hypervisor?
as kernel.
Two types:
Type 1 architecture has access to control hardware and control operating systems. Have some “deep” privileges like root. Runs directly on the hardware, as a process. Native.
Type 2:
Application VM. These runs as other operational applications. Hosted.
Trusted Platform Module (TPM)
…..
Virtual Memory
….?
CPU Access Modes
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TPM Measurement
The primary scope of TPM is to assure the integrity of a platform.
Sits on motherhood, secures boot process from a trusted combination of hardware and software.
?????A measurement is stored by extending a particular PCR:
PCR - is related to memory location
Platform Configuration Registers.
SHA1 can store 20 bytes
Full Hardware Isolation
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Intel Software Guard Extensions
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Confidential Computing
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Controlled Invocation
….Lol Kontrollert anrop
